Revert "Sync docs from master to gh-pages"
This reverts commit f5f2b4c4f7.
This commit is contained in:
Marcin Grzejszczak
@@ -1,35 +0,0 @@
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/*
|
||||
code highlight CSS resemblign the Eclipse IDE default color schema
|
||||
@author Costin Leau
|
||||
*/
|
||||
|
||||
.hl-keyword {
|
||||
color: #7F0055;
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.hl-comment {
|
||||
color: #3F5F5F;
|
||||
font-style: italic;
|
||||
}
|
||||
|
||||
.hl-multiline-comment {
|
||||
color: #3F5FBF;
|
||||
font-style: italic;
|
||||
}
|
||||
|
||||
.hl-tag {
|
||||
color: #3F7F7F;
|
||||
}
|
||||
|
||||
.hl-attribute {
|
||||
color: #7F007F;
|
||||
}
|
||||
|
||||
.hl-value {
|
||||
color: #2A00FF;
|
||||
}
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||||
|
||||
.hl-string {
|
||||
color: #2A00FF;
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||||
}
|
||||
@@ -1,9 +0,0 @@
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||||
@IMPORT url("manual.css");
|
||||
|
||||
body.firstpage {
|
||||
background: url("../images/background.png") no-repeat center top;
|
||||
}
|
||||
|
||||
div.part h1 {
|
||||
border-top: none;
|
||||
}
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||||
@@ -1,6 +0,0 @@
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||||
@IMPORT url("manual.css");
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||||
|
||||
body {
|
||||
background: url("../images/background.png") no-repeat center top;
|
||||
}
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||||
|
||||
344
css/manual.css
344
css/manual.css
@@ -1,344 +0,0 @@
|
||||
@IMPORT url("highlight.css");
|
||||
|
||||
html {
|
||||
padding: 0pt;
|
||||
margin: 0pt;
|
||||
}
|
||||
|
||||
body {
|
||||
color: #333333;
|
||||
margin: 15px 30px;
|
||||
font-family: Helvetica, Arial, Freesans, Clean, Sans-serif;
|
||||
line-height: 1.6;
|
||||
-webkit-font-smoothing: antialiased;
|
||||
}
|
||||
|
||||
code {
|
||||
font-size: 16px;
|
||||
font-family: Consolas, "Liberation Mono", Courier, monospace;
|
||||
}
|
||||
|
||||
:not(a)>code {
|
||||
color: #6D180B;
|
||||
}
|
||||
|
||||
:not(pre)>code {
|
||||
background-color: #F2F2F2;
|
||||
border: 1px solid #CCCCCC;
|
||||
border-radius: 4px;
|
||||
padding: 1px 3px 0;
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||||
text-shadow: none;
|
||||
white-space: nowrap;
|
||||
}
|
||||
|
||||
body>*:first-child {
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||||
margin-top: 0 !important;
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||||
}
|
||||
|
||||
div {
|
||||
margin: 0pt;
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||||
}
|
||||
|
||||
hr {
|
||||
border: 1px solid #CCCCCC;
|
||||
background: #CCCCCC;
|
||||
}
|
||||
|
||||
h1,h2,h3,h4,h5,h6 {
|
||||
color: #000000;
|
||||
cursor: text;
|
||||
font-weight: bold;
|
||||
margin: 30px 0 10px;
|
||||
padding: 0;
|
||||
}
|
||||
|
||||
h1,h2,h3 {
|
||||
margin: 40px 0 10px;
|
||||
}
|
||||
|
||||
h1 {
|
||||
margin: 70px 0 30px;
|
||||
padding-top: 20px;
|
||||
}
|
||||
|
||||
div.part h1 {
|
||||
border-top: 1px dotted #CCCCCC;
|
||||
}
|
||||
|
||||
h1,h1 code {
|
||||
font-size: 32px;
|
||||
}
|
||||
|
||||
h2,h2 code {
|
||||
font-size: 24px;
|
||||
}
|
||||
|
||||
h3,h3 code {
|
||||
font-size: 20px;
|
||||
}
|
||||
|
||||
h4,h1 code,h5,h5 code,h6,h6 code {
|
||||
font-size: 18px;
|
||||
}
|
||||
|
||||
div.book,div.chapter,div.appendix,div.part,div.preface {
|
||||
min-width: 300px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
p.releaseinfo {
|
||||
font-weight: bold;
|
||||
margin-bottom: 40px;
|
||||
margin-top: 40px;
|
||||
}
|
||||
|
||||
div.authorgroup {
|
||||
line-height: 1;
|
||||
}
|
||||
|
||||
p.copyright {
|
||||
line-height: 1;
|
||||
margin-bottom: -5px;
|
||||
}
|
||||
|
||||
.legalnotice p {
|
||||
font-style: italic;
|
||||
font-size: 14px;
|
||||
line-height: 1;
|
||||
}
|
||||
|
||||
div.titlepage+p,div.titlepage+p {
|
||||
margin-top: 0;
|
||||
}
|
||||
|
||||
pre {
|
||||
line-height: 1.0;
|
||||
color: black;
|
||||
}
|
||||
|
||||
a {
|
||||
color: #4183C4;
|
||||
text-decoration: none;
|
||||
}
|
||||
|
||||
p {
|
||||
margin: 15px 0;
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||||
text-align: left;
|
||||
}
|
||||
|
||||
ul,ol {
|
||||
padding-left: 30px;
|
||||
}
|
||||
|
||||
li p {
|
||||
margin: 0;
|
||||
}
|
||||
|
||||
div.table {
|
||||
margin: 1em;
|
||||
padding: 0.5em;
|
||||
text-align: center;
|
||||
}
|
||||
|
||||
div.table table,div.informaltable table {
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||||
display: table;
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||||
width: 100%;
|
||||
}
|
||||
|
||||
div.table td {
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||||
padding-left: 7px;
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||||
padding-right: 7px;
|
||||
}
|
||||
|
||||
.sidebar {
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||||
line-height: 1.4;
|
||||
padding: 0 20px;
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||||
background-color: #F8F8F8;
|
||||
border: 1px solid #CCCCCC;
|
||||
border-radius: 3px 3px 3px 3px;
|
||||
}
|
||||
|
||||
.sidebar p.title {
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||||
color: #6D180B;
|
||||
}
|
||||
|
||||
pre.programlisting,pre.screen {
|
||||
font-size: 15px;
|
||||
padding: 6px 10px;
|
||||
background-color: #F8F8F8;
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||||
border: 1px solid #CCCCCC;
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||||
border-radius: 3px 3px 3px 3px;
|
||||
clear: both;
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||||
overflow: auto;
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||||
line-height: 1.4;
|
||||
font-family: Consolas, "Liberation Mono", Courier, monospace;
|
||||
}
|
||||
|
||||
table {
|
||||
border-collapse: collapse;
|
||||
border-spacing: 0;
|
||||
border: 1px solid #DDDDDD !important;
|
||||
border-radius: 4px !important;
|
||||
border-collapse: separate !important;
|
||||
line-height: 1.6;
|
||||
}
|
||||
|
||||
table thead {
|
||||
background: #F5F5F5;
|
||||
}
|
||||
|
||||
table tr {
|
||||
border: none;
|
||||
border-bottom: none;
|
||||
}
|
||||
|
||||
table th {
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
table th,table td {
|
||||
border: none !important;
|
||||
padding: 6px 13px;
|
||||
}
|
||||
|
||||
table tr:nth-child(2n) {
|
||||
background-color: #F8F8F8;
|
||||
}
|
||||
|
||||
td p {
|
||||
margin: 0 0 15px 0;
|
||||
}
|
||||
|
||||
div.table-contents td p {
|
||||
margin: 0;
|
||||
}
|
||||
|
||||
div.important *,div.note *,div.tip *,div.warning *,div.navheader *,div.navfooter *,div.calloutlist *
|
||||
{
|
||||
border: none !important;
|
||||
background: none !important;
|
||||
margin: 0;
|
||||
}
|
||||
|
||||
div.important p,div.note p,div.tip p,div.warning p {
|
||||
color: #6F6F6F;
|
||||
line-height: 1.6;
|
||||
}
|
||||
|
||||
div.important code,div.note code,div.tip code,div.warning code {
|
||||
background-color: #F2F2F2 !important;
|
||||
border: 1px solid #CCCCCC !important;
|
||||
border-radius: 4px !important;
|
||||
padding: 1px 3px 0 !important;
|
||||
text-shadow: none !important;
|
||||
white-space: nowrap !important;
|
||||
}
|
||||
|
||||
.note th,.tip th,.warning th {
|
||||
display: none;
|
||||
}
|
||||
|
||||
.note tr:first-child td,.tip tr:first-child td,.warning tr:first-child td
|
||||
{
|
||||
border-right: 1px solid #CCCCCC !important;
|
||||
padding-top: 10px;
|
||||
}
|
||||
|
||||
div.calloutlist p,div.calloutlist td {
|
||||
padding: 0;
|
||||
margin: 0;
|
||||
}
|
||||
|
||||
div.calloutlist>table>tbody>tr>td:first-child {
|
||||
padding-left: 10px;
|
||||
width: 30px !important;
|
||||
}
|
||||
|
||||
div.important,div.note,div.tip,div.warning {
|
||||
margin-left: 0px !important;
|
||||
margin-right: 20px !important;
|
||||
margin-top: 20px;
|
||||
margin-bottom: 20px;
|
||||
padding-top: 10px;
|
||||
padding-bottom: 10px;
|
||||
}
|
||||
|
||||
div.toc {
|
||||
line-height: 1.2;
|
||||
}
|
||||
|
||||
dl,dt {
|
||||
margin-top: 1px;
|
||||
margin-bottom: 0;
|
||||
}
|
||||
|
||||
div.toc>dl>dt {
|
||||
font-size: 32px;
|
||||
font-weight: bold;
|
||||
margin: 30px 0 10px 0;
|
||||
display: block;
|
||||
}
|
||||
|
||||
div.toc>dl>dd>dl>dt {
|
||||
font-size: 24px;
|
||||
font-weight: bold;
|
||||
margin: 20px 0 10px 0;
|
||||
display: block;
|
||||
}
|
||||
|
||||
div.toc>dl>dd>dl>dd>dl>dt {
|
||||
font-weight: bold;
|
||||
font-size: 20px;
|
||||
margin: 10px 0 0 0;
|
||||
}
|
||||
|
||||
tbody.footnotes * {
|
||||
border: none !important;
|
||||
}
|
||||
|
||||
div.footnote p {
|
||||
margin: 0;
|
||||
line-height: 1;
|
||||
}
|
||||
|
||||
div.footnote p sup {
|
||||
margin-right: 6px;
|
||||
vertical-align: middle;
|
||||
}
|
||||
|
||||
div.navheader {
|
||||
border-bottom: 1px solid #CCCCCC;
|
||||
}
|
||||
|
||||
div.navfooter {
|
||||
border-top: 1px solid #CCCCCC;
|
||||
}
|
||||
|
||||
.title {
|
||||
margin-left: -1em;
|
||||
padding-left: 1em;
|
||||
}
|
||||
|
||||
.title>a {
|
||||
position: absolute;
|
||||
visibility: hidden;
|
||||
display: block;
|
||||
font-size: 0.85em;
|
||||
margin-top: 0.05em;
|
||||
margin-left: -1em;
|
||||
vertical-align: text-top;
|
||||
color: black;
|
||||
}
|
||||
|
||||
.title>a:before {
|
||||
content: "\00A7";
|
||||
}
|
||||
|
||||
.title:hover>a,.title>a:hover,.title:hover>a:hover {
|
||||
visibility: visible;
|
||||
}
|
||||
|
||||
.title:focus>a,.title>a:focus,.title:focus>a:focus {
|
||||
outline: 0;
|
||||
}
|
||||
@@ -1,12 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
|
||||
<component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
|
||||
<output url="file://$MODULE_DIR$/target/classes" />
|
||||
<output-test url="file://$MODULE_DIR$/target/test-classes" />
|
||||
<content url="file://$MODULE_DIR$">
|
||||
<excludeFolder url="file://$MODULE_DIR$/target" />
|
||||
</content>
|
||||
<orderEntry type="inheritedJdk" />
|
||||
<orderEntry type="sourceFolder" forTests="false" />
|
||||
</component>
|
||||
</module>
|
||||
@@ -1,35 +0,0 @@
|
||||
/*
|
||||
code highlight CSS resemblign the Eclipse IDE default color schema
|
||||
@author Costin Leau
|
||||
*/
|
||||
|
||||
.hl-keyword {
|
||||
color: #7F0055;
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.hl-comment {
|
||||
color: #3F5F5F;
|
||||
font-style: italic;
|
||||
}
|
||||
|
||||
.hl-multiline-comment {
|
||||
color: #3F5FBF;
|
||||
font-style: italic;
|
||||
}
|
||||
|
||||
.hl-tag {
|
||||
color: #3F7F7F;
|
||||
}
|
||||
|
||||
.hl-attribute {
|
||||
color: #7F007F;
|
||||
}
|
||||
|
||||
.hl-value {
|
||||
color: #2A00FF;
|
||||
}
|
||||
|
||||
.hl-string {
|
||||
color: #2A00FF;
|
||||
}
|
||||
@@ -1,9 +0,0 @@
|
||||
@IMPORT url("manual.css");
|
||||
|
||||
body.firstpage {
|
||||
background: url("../images/background.png") no-repeat center top;
|
||||
}
|
||||
|
||||
div.part h1 {
|
||||
border-top: none;
|
||||
}
|
||||
@@ -1,6 +0,0 @@
|
||||
@IMPORT url("manual.css");
|
||||
|
||||
body {
|
||||
background: url("../images/background.png") no-repeat center top;
|
||||
}
|
||||
|
||||
@@ -1,344 +0,0 @@
|
||||
@IMPORT url("highlight.css");
|
||||
|
||||
html {
|
||||
padding: 0pt;
|
||||
margin: 0pt;
|
||||
}
|
||||
|
||||
body {
|
||||
color: #333333;
|
||||
margin: 15px 30px;
|
||||
font-family: Helvetica, Arial, Freesans, Clean, Sans-serif;
|
||||
line-height: 1.6;
|
||||
-webkit-font-smoothing: antialiased;
|
||||
}
|
||||
|
||||
code {
|
||||
font-size: 16px;
|
||||
font-family: Consolas, "Liberation Mono", Courier, monospace;
|
||||
}
|
||||
|
||||
:not(a)>code {
|
||||
color: #6D180B;
|
||||
}
|
||||
|
||||
:not(pre)>code {
|
||||
background-color: #F2F2F2;
|
||||
border: 1px solid #CCCCCC;
|
||||
border-radius: 4px;
|
||||
padding: 1px 3px 0;
|
||||
text-shadow: none;
|
||||
white-space: nowrap;
|
||||
}
|
||||
|
||||
body>*:first-child {
|
||||
margin-top: 0 !important;
|
||||
}
|
||||
|
||||
div {
|
||||
margin: 0pt;
|
||||
}
|
||||
|
||||
hr {
|
||||
border: 1px solid #CCCCCC;
|
||||
background: #CCCCCC;
|
||||
}
|
||||
|
||||
h1,h2,h3,h4,h5,h6 {
|
||||
color: #000000;
|
||||
cursor: text;
|
||||
font-weight: bold;
|
||||
margin: 30px 0 10px;
|
||||
padding: 0;
|
||||
}
|
||||
|
||||
h1,h2,h3 {
|
||||
margin: 40px 0 10px;
|
||||
}
|
||||
|
||||
h1 {
|
||||
margin: 70px 0 30px;
|
||||
padding-top: 20px;
|
||||
}
|
||||
|
||||
div.part h1 {
|
||||
border-top: 1px dotted #CCCCCC;
|
||||
}
|
||||
|
||||
h1,h1 code {
|
||||
font-size: 32px;
|
||||
}
|
||||
|
||||
h2,h2 code {
|
||||
font-size: 24px;
|
||||
}
|
||||
|
||||
h3,h3 code {
|
||||
font-size: 20px;
|
||||
}
|
||||
|
||||
h4,h1 code,h5,h5 code,h6,h6 code {
|
||||
font-size: 18px;
|
||||
}
|
||||
|
||||
div.book,div.chapter,div.appendix,div.part,div.preface {
|
||||
min-width: 300px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
p.releaseinfo {
|
||||
font-weight: bold;
|
||||
margin-bottom: 40px;
|
||||
margin-top: 40px;
|
||||
}
|
||||
|
||||
div.authorgroup {
|
||||
line-height: 1;
|
||||
}
|
||||
|
||||
p.copyright {
|
||||
line-height: 1;
|
||||
margin-bottom: -5px;
|
||||
}
|
||||
|
||||
.legalnotice p {
|
||||
font-style: italic;
|
||||
font-size: 14px;
|
||||
line-height: 1;
|
||||
}
|
||||
|
||||
div.titlepage+p,div.titlepage+p {
|
||||
margin-top: 0;
|
||||
}
|
||||
|
||||
pre {
|
||||
line-height: 1.0;
|
||||
color: black;
|
||||
}
|
||||
|
||||
a {
|
||||
color: #4183C4;
|
||||
text-decoration: none;
|
||||
}
|
||||
|
||||
p {
|
||||
margin: 15px 0;
|
||||
text-align: left;
|
||||
}
|
||||
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|
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|
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|
||||
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|
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|
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|
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|
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|
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|
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|
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||||
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|
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|
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|
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|
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|
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|
||||
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|
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|
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>2. Building a Gateway Using Spring MVC</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_gateway-starter.html" title="1. How to Include Spring Cloud Gateway"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">2. Building a Gateway Using Spring MVC</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_gateway-starter.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> </td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_building_a_gateway_using_spring_mvc" href="#_building_a_gateway_using_spring_mvc"></a>2. Building a Gateway Using Spring MVC</h1></div></div></div><p>Spring Cloud Gateway provides a utility object called <code class="literal">ProxyExchange</code> which you can use inside a regular Spring MVC handler as a method parameter. It supports basic downstream HTTP exchanges via methods that mirror the HTTP verbs, or forwarding to a local handler via the <code class="literal">forward()</code> method.</p><p>Example (proxying a request to "/test" downstream to a remote server):</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@RestController</span></em>
|
||||
<em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> GatewaySampleApplication {
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@Value("${remote.home}")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">private</span> URI home;
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@GetMapping("/test")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxy(ProxyExchange<Object> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/image/png"</span>).get();
|
||||
}
|
||||
|
||||
}</pre><p>There are convenience methods on the <code class="literal">ProxyExchange</code> to enable the handler method to discover and enhance the URI path of the incoming request. For example you might want to extract the trailing elements of a path to pass them downstream:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@GetMapping("/proxy/path/**")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxyPath(ProxyExchange<?> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
String path = proxy.path(<span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/proxy/path/"</span>);
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/foos/"</span> + path).get();
|
||||
}</pre><p>All the features of Spring MVC are available to Gateway handler methods. So you can inject request headers and query parameters, for instance, and you can constrain the incoming requests with declarations in the mapping annotation. See the documentation for <code class="literal">@RequestMapping</code> in Spring MVC for more details of those features.</p><p>Headers can be added to the downstream response using the <code class="literal">header()</code> methods on <code class="literal">ProxyExchange</code>.</p><p>You can also manipulate response headers (and anything else you like in the response) by adding a mapper to the <code class="literal">get()</code> etc. method. The mapper is a <code class="literal">Function</code> that takes the incoming <code class="literal">ResponseEntity</code> and converts it to an outgoing one.</p><p>First class support is provided for "sensitive" headers ("cookie" and "authorization" by default) which are not passed downstream, and for "proxy" headers (<code class="literal">x-forwarded-*</code>).</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_gateway-starter.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top">1. How to Include Spring Cloud Gateway </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
@@ -1,3 +0,0 @@
|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>1. How to Include Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_pr01.html" title=""><link rel="next" href="multi__building_a_gateway_using_spring_mvc.html" title="2. Building a Gateway Using Spring MVC"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">1. How to Include Spring Cloud Gateway</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_pr01.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi__building_a_gateway_using_spring_mvc.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="gateway-starter" href="#gateway-starter"></a>1. How to Include Spring Cloud Gateway</h1></div></div></div><p>To include Spring Cloud Gateway in your project add a dependency with group <code class="literal">org.springframework.cloud</code> and artifact id <code class="literal">spring-cloud-gateway-mvc</code>. See the <a class="link" href="http://projects.spring.io/spring-cloud/" target="_top">Spring Cloud Project page</a> for details on setting up your build system with the current Spring Cloud Release Train.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_pr01.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi__building_a_gateway_using_spring_mvc.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> 2. Building a Gateway Using Spring MVC</td></tr></table></div></body></html>
|
||||
@@ -1,3 +0,0 @@
|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title></title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="next" href="multi_gateway-starter.html" title="1. How to Include Spring Cloud Gateway"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_spring-cloud-gateway.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi_gateway-starter.html">Next</a></td></tr></table><hr></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="d0e9" href="#d0e9"></a></h1></div></div></div><p><span class="strong"><strong>1.0.0.BUILD-SNAPSHOT</strong></span></p><p>This project provides a library for building an API Gateway on top of Spring MVC. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_spring-cloud-gateway.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi_gateway-starter.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Spring Cloud Gateway </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> 1. How to Include Spring Cloud Gateway</td></tr></table></div></body></html>
|
||||
@@ -1,3 +0,0 @@
|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="next" href="multi_pr01.html" title=""></head><body class="firstpage" bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Spring Cloud Gateway</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi_pr01.html">Next</a></td></tr></table><hr></div><div lang="en" class="book"><div class="titlepage"><div><div><h1 class="title"><a name="d0e3"></a>Spring Cloud Gateway</h1></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="preface"><a href="multi_pr01.html"></a></span></dt><dt><span class="chapter"><a href="multi_gateway-starter.html">1. How to Include Spring Cloud Gateway</a></span></dt><dt><span class="chapter"><a href="multi__building_a_gateway_using_spring_mvc.html">2. Building a Gateway Using Spring MVC</a></span></dt></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi_pr01.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"> </td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
@@ -1,35 +0,0 @@
|
||||
/*
|
||||
code highlight CSS resemblign the Eclipse IDE default color schema
|
||||
@author Costin Leau
|
||||
*/
|
||||
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||||
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|
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|
||||
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|
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|
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|
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|
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|
||||
color: #3F5FBF;
|
||||
font-style: italic;
|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
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color: #7F007F;
|
||||
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|
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|
||||
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|
||||
color: #2A00FF;
|
||||
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|
||||
|
||||
.hl-string {
|
||||
color: #2A00FF;
|
||||
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|
||||
@@ -1,9 +0,0 @@
|
||||
@IMPORT url("manual.css");
|
||||
|
||||
body.firstpage {
|
||||
background: url("../images/background.png") no-repeat center top;
|
||||
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|
||||
|
||||
div.part h1 {
|
||||
border-top: none;
|
||||
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|
||||
@@ -1,6 +0,0 @@
|
||||
@IMPORT url("manual.css");
|
||||
|
||||
body {
|
||||
background: url("../images/background.png") no-repeat center top;
|
||||
}
|
||||
|
||||
@@ -1,344 +0,0 @@
|
||||
@IMPORT url("highlight.css");
|
||||
|
||||
html {
|
||||
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|
||||
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|
||||
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|
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|
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|
||||
margin: 15px 30px;
|
||||
font-family: Helvetica, Arial, Freesans, Clean, Sans-serif;
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||||
line-height: 1.6;
|
||||
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|
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|
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|
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|
||||
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|
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|
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|
||||
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|
||||
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|
||||
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|
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|
||||
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|
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|
||||
border: 1px solid #CCCCCC;
|
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|
||||
padding: 1px 3px 0;
|
||||
text-shadow: none;
|
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white-space: nowrap;
|
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|
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|
||||
body>*:first-child {
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|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-singlepage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div lang="en" class="book"><div class="titlepage"><div><div><h1 class="title"><a name="d0e3"></a>Spring Cloud Gateway</h1></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="preface"><a href="#d0e9"></a></span></dt><dt><span class="chapter"><a href="#gateway-starter">1. How to Include Spring Cloud Gateway</a></span></dt><dt><span class="chapter"><a href="#_building_a_gateway_using_spring_mvc">2. Building a Gateway Using Spring MVC</a></span></dt></dl></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="d0e9" href="#d0e9"></a></h1></div></div></div><p><span class="strong"><strong>1.0.0.BUILD-SNAPSHOT</strong></span></p><p>This project provides a library for building an API Gateway on top of Spring MVC. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.</p></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="gateway-starter" href="#gateway-starter"></a>1. How to Include Spring Cloud Gateway</h1></div></div></div><p>To include Spring Cloud Gateway in your project add a dependency with group <code class="literal">org.springframework.cloud</code> and artifact id <code class="literal">spring-cloud-gateway-mvc</code>. See the <a class="link" href="http://projects.spring.io/spring-cloud/" target="_top">Spring Cloud Project page</a> for details on setting up your build system with the current Spring Cloud Release Train.</p></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_building_a_gateway_using_spring_mvc" href="#_building_a_gateway_using_spring_mvc"></a>2. Building a Gateway Using Spring MVC</h1></div></div></div><p>Spring Cloud Gateway provides a utility object called <code class="literal">ProxyExchange</code> which you can use inside a regular Spring MVC handler as a method parameter. It supports basic downstream HTTP exchanges via methods that mirror the HTTP verbs, or forwarding to a local handler via the <code class="literal">forward()</code> method.</p><p>Example (proxying a request to "/test" downstream to a remote server):</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@RestController</span></em>
|
||||
<em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> GatewaySampleApplication {
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@Value("${remote.home}")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">private</span> URI home;
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@GetMapping("/test")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxy(ProxyExchange<Object> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/image/png"</span>).get();
|
||||
}
|
||||
|
||||
}</pre><p>There are convenience methods on the <code class="literal">ProxyExchange</code> to enable the handler method to discover and enhance the URI path of the incoming request. For example you might want to extract the trailing elements of a path to pass them downstream:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@GetMapping("/proxy/path/**")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxyPath(ProxyExchange<?> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
String path = proxy.path(<span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/proxy/path/"</span>);
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/foos/"</span> + path).get();
|
||||
}</pre><p>All the features of Spring MVC are available to Gateway handler methods. So you can inject request headers and query parameters, for instance, and you can constrain the incoming requests with declarations in the mapping annotation. See the documentation for <code class="literal">@RequestMapping</code> in Spring MVC for more details of those features.</p><p>Headers can be added to the downstream response using the <code class="literal">header()</code> methods on <code class="literal">ProxyExchange</code>.</p><p>You can also manipulate response headers (and anything else you like in the response) by adding a mapper to the <code class="literal">get()</code> etc. method. The mapper is a <code class="literal">Function</code> that takes the incoming <code class="literal">ResponseEntity</code> and converts it to an outgoing one.</p><p>First class support is provided for "sensitive" headers ("cookie" and "authorization" by default) which are not passed downstream, and for "proxy" headers (<code class="literal">x-forwarded-*</code>).</p></div></div></body></html>
|
||||
@@ -1,19 +0,0 @@
|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>2. Building a Gateway Using Spring MVC</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_gateway-starter.html" title="1. How to Include Spring Cloud Gateway"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">2. Building a Gateway Using Spring MVC</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_gateway-starter.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> </td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_building_a_gateway_using_spring_mvc" href="#_building_a_gateway_using_spring_mvc"></a>2. Building a Gateway Using Spring MVC</h1></div></div></div><p>Spring Cloud Gateway provides a utility object called <code class="literal">ProxyExchange</code> which you can use inside a regular Spring MVC handler as a method parameter. It supports basic downstream HTTP exchanges via methods that mirror the HTTP verbs, or forwarding to a local handler via the <code class="literal">forward()</code> method.</p><p>Example (proxying a request to "/test" downstream to a remote server):</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@RestController</span></em>
|
||||
<em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> GatewaySampleApplication {
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@Value("${remote.home}")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">private</span> URI home;
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@GetMapping("/test")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxy(ProxyExchange<Object> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/image/png"</span>).get();
|
||||
}
|
||||
|
||||
}</pre><p>There are convenience methods on the <code class="literal">ProxyExchange</code> to enable the handler method to discover and enhance the URI path of the incoming request. For example you might want to extract the trailing elements of a path to pass them downstream:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@GetMapping("/proxy/path/**")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxyPath(ProxyExchange<?> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
String path = proxy.path(<span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/proxy/path/"</span>);
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/foos/"</span> + path).get();
|
||||
}</pre><p>All the features of Spring MVC are available to Gateway handler methods. So you can inject request headers and query parameters, for instance, and you can constrain the incoming requests with declarations in the mapping annotation. See the documentation for <code class="literal">@RequestMapping</code> in Spring MVC for more details of those features.</p><p>Headers can be added to the downstream response using the <code class="literal">header()</code> methods on <code class="literal">ProxyExchange</code>.</p><p>You can also manipulate response headers (and anything else you like in the response) by adding a mapper to the <code class="literal">get()</code> etc. method. The mapper is a <code class="literal">Function</code> that takes the incoming <code class="literal">ResponseEntity</code> and converts it to an outgoing one.</p><p>First class support is provided for "sensitive" headers ("cookie" and "authorization" by default) which are not passed downstream, and for "proxy" headers (<code class="literal">x-forwarded-*</code>).</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_gateway-starter.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top">1. How to Include Spring Cloud Gateway </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
|
||||
@@ -1,3 +0,0 @@
|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>1. How to Include Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_pr01.html" title=""><link rel="next" href="multi__building_a_gateway_using_spring_mvc.html" title="2. Building a Gateway Using Spring MVC"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">1. How to Include Spring Cloud Gateway</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_pr01.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi__building_a_gateway_using_spring_mvc.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="gateway-starter" href="#gateway-starter"></a>1. How to Include Spring Cloud Gateway</h1></div></div></div><p>To include Spring Cloud Gateway in your project add a dependency with group <code class="literal">org.springframework.cloud</code> and artifact id <code class="literal">spring-cloud-gateway-mvc</code>. See the <a class="link" href="http://projects.spring.io/spring-cloud/" target="_top">Spring Cloud Project page</a> for details on setting up your build system with the current Spring Cloud Release Train.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_pr01.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi__building_a_gateway_using_spring_mvc.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> 2. Building a Gateway Using Spring MVC</td></tr></table></div></body></html>
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||||
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|
||||
<html><head>
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||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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||||
<title></title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="next" href="multi_gateway-starter.html" title="1. How to Include Spring Cloud Gateway"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_spring-cloud-gateway.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi_gateway-starter.html">Next</a></td></tr></table><hr></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="d0e9" href="#d0e9"></a></h1></div></div></div><p><span class="strong"><strong>1.0.0.BUILD-SNAPSHOT</strong></span></p><p>This project provides a library for building an API Gateway on top of Spring MVC. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_spring-cloud-gateway.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi_gateway-starter.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Spring Cloud Gateway </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> 1. How to Include Spring Cloud Gateway</td></tr></table></div></body></html>
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||||
<html><head>
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||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="next" href="multi_pr01.html" title=""></head><body class="firstpage" bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Spring Cloud Gateway</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi_pr01.html">Next</a></td></tr></table><hr></div><div lang="en" class="book"><div class="titlepage"><div><div><h1 class="title"><a name="d0e3"></a>Spring Cloud Gateway</h1></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="preface"><a href="multi_pr01.html"></a></span></dt><dt><span class="chapter"><a href="multi_gateway-starter.html">1. How to Include Spring Cloud Gateway</a></span></dt><dt><span class="chapter"><a href="multi__building_a_gateway_using_spring_mvc.html">2. Building a Gateway Using Spring MVC</a></span></dt></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi_pr01.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"> </td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
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<html><head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-singlepage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div lang="en" class="book"><div class="titlepage"><div><div><h1 class="title"><a name="d0e3"></a>Spring Cloud Gateway</h1></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="preface"><a href="#d0e9"></a></span></dt><dt><span class="chapter"><a href="#gateway-starter">1. How to Include Spring Cloud Gateway</a></span></dt><dt><span class="chapter"><a href="#_building_a_gateway_using_spring_mvc">2. Building a Gateway Using Spring MVC</a></span></dt></dl></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="d0e9" href="#d0e9"></a></h1></div></div></div><p><span class="strong"><strong>1.0.0.BUILD-SNAPSHOT</strong></span></p><p>This project provides a library for building an API Gateway on top of Spring MVC. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.</p></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="gateway-starter" href="#gateway-starter"></a>1. How to Include Spring Cloud Gateway</h1></div></div></div><p>To include Spring Cloud Gateway in your project add a dependency with group <code class="literal">org.springframework.cloud</code> and artifact id <code class="literal">spring-cloud-gateway-mvc</code>. See the <a class="link" href="http://projects.spring.io/spring-cloud/" target="_top">Spring Cloud Project page</a> for details on setting up your build system with the current Spring Cloud Release Train.</p></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_building_a_gateway_using_spring_mvc" href="#_building_a_gateway_using_spring_mvc"></a>2. Building a Gateway Using Spring MVC</h1></div></div></div><p>Spring Cloud Gateway provides a utility object called <code class="literal">ProxyExchange</code> which you can use inside a regular Spring MVC handler as a method parameter. It supports basic downstream HTTP exchanges via methods that mirror the HTTP verbs, or forwarding to a local handler via the <code class="literal">forward()</code> method.</p><p>Example (proxying a request to "/test" downstream to a remote server):</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@RestController</span></em>
|
||||
<em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
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||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> GatewaySampleApplication {
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||||
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||||
<em><span class="hl-annotation" style="color: gray">@Value("${remote.home}")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">private</span> URI home;
|
||||
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||||
<em><span class="hl-annotation" style="color: gray">@GetMapping("/test")</span></em>
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||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxy(ProxyExchange<Object> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/image/png"</span>).get();
|
||||
}
|
||||
|
||||
}</pre><p>There are convenience methods on the <code class="literal">ProxyExchange</code> to enable the handler method to discover and enhance the URI path of the incoming request. For example you might want to extract the trailing elements of a path to pass them downstream:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@GetMapping("/proxy/path/**")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxyPath(ProxyExchange<?> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
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||||
String path = proxy.path(<span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/proxy/path/"</span>);
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/foos/"</span> + path).get();
|
||||
}</pre><p>All the features of Spring MVC are available to Gateway handler methods. So you can inject request headers and query parameters, for instance, and you can constrain the incoming requests with declarations in the mapping annotation. See the documentation for <code class="literal">@RequestMapping</code> in Spring MVC for more details of those features.</p><p>Headers can be added to the downstream response using the <code class="literal">header()</code> methods on <code class="literal">ProxyExchange</code>.</p><p>You can also manipulate response headers (and anything else you like in the response) by adding a mapper to the <code class="literal">get()</code> etc. method. The mapper is a <code class="literal">Function</code> that takes the incoming <code class="literal">ResponseEntity</code> and converts it to an outgoing one.</p><p>First class support is provided for "sensitive" headers ("cookie" and "authorization" by default) which are not passed downstream, and for "proxy" headers (<code class="literal">x-forwarded-*</code>).</p></div></div></body></html>
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|
||||
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|
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|
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|
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|
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
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|
||||
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|
||||
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|
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|
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
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|
||||
|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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@@ -1,19 +0,0 @@
|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||||
<title>2. Building a Gateway Using Spring MVC</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_gateway-starter.html" title="1. How to Include Spring Cloud Gateway"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">2. Building a Gateway Using Spring MVC</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_gateway-starter.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> </td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_building_a_gateway_using_spring_mvc" href="#_building_a_gateway_using_spring_mvc"></a>2. Building a Gateway Using Spring MVC</h1></div></div></div><p>Spring Cloud Gateway provides a utility object called <code class="literal">ProxyExchange</code> which you can use inside a regular Spring MVC handler as a method parameter. It supports basic downstream HTTP exchanges via methods that mirror the HTTP verbs, or forwarding to a local handler via the <code class="literal">forward()</code> method.</p><p>Example (proxying a request to "/test" downstream to a remote server):</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@RestController</span></em>
|
||||
<em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> GatewaySampleApplication {
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@Value("${remote.home}")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">private</span> URI home;
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@GetMapping("/test")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxy(ProxyExchange<Object> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/image/png"</span>).get();
|
||||
}
|
||||
|
||||
}</pre><p>There are convenience methods on the <code class="literal">ProxyExchange</code> to enable the handler method to discover and enhance the URI path of the incoming request. For example you might want to extract the trailing elements of a path to pass them downstream:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@GetMapping("/proxy/path/**")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxyPath(ProxyExchange<?> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
String path = proxy.path(<span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/proxy/path/"</span>);
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/foos/"</span> + path).get();
|
||||
}</pre><p>All the features of Spring MVC are available to Gateway handler methods. So you can inject request headers and query parameters, for instance, and you can constrain the incoming requests with declarations in the mapping annotation. See the documentation for <code class="literal">@RequestMapping</code> in Spring MVC for more details of those features.</p><p>Headers can be added to the downstream response using the <code class="literal">header()</code> methods on <code class="literal">ProxyExchange</code>.</p><p>You can also manipulate response headers (and anything else you like in the response) by adding a mapper to the <code class="literal">get()</code> etc. method. The mapper is a <code class="literal">Function</code> that takes the incoming <code class="literal">ResponseEntity</code> and converts it to an outgoing one.</p><p>First class support is provided for "sensitive" headers ("cookie" and "authorization" by default) which are not passed downstream, and for "proxy" headers (<code class="literal">x-forwarded-*</code>).</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_gateway-starter.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top">1. How to Include Spring Cloud Gateway </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
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||||
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|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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||||
<title>1. How to Include Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_pr01.html" title=""><link rel="next" href="multi__building_a_gateway_using_spring_mvc.html" title="2. Building a Gateway Using Spring MVC"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">1. How to Include Spring Cloud Gateway</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_pr01.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi__building_a_gateway_using_spring_mvc.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="gateway-starter" href="#gateway-starter"></a>1. How to Include Spring Cloud Gateway</h1></div></div></div><p>To include Spring Cloud Gateway in your project add a dependency with group <code class="literal">org.springframework.cloud</code> and artifact id <code class="literal">spring-cloud-gateway-mvc</code>. See the <a class="link" href="http://projects.spring.io/spring-cloud/" target="_top">Spring Cloud Project page</a> for details on setting up your build system with the current Spring Cloud Release Train.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_pr01.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi__building_a_gateway_using_spring_mvc.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> 2. Building a Gateway Using Spring MVC</td></tr></table></div></body></html>
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||||
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|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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||||
<title></title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="up" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="prev" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="next" href="multi_gateway-starter.html" title="1. How to Include Spring Cloud Gateway"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_spring-cloud-gateway.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi_gateway-starter.html">Next</a></td></tr></table><hr></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="d0e9" href="#d0e9"></a></h1></div></div></div><p><span class="strong"><strong>1.0.0.BUILD-SNAPSHOT</strong></span></p><p>This project provides a library for building an API Gateway on top of Spring MVC. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="multi_spring-cloud-gateway.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi_gateway-starter.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Spring Cloud Gateway </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-gateway.html">Home</a></td><td width="40%" align="right" valign="top"> 1. How to Include Spring Cloud Gateway</td></tr></table></div></body></html>
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||||
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|
||||
<html><head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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||||
<title>Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="multi_spring-cloud-gateway.html" title="Spring Cloud Gateway"><link rel="next" href="multi_pr01.html" title=""></head><body class="firstpage" bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Spring Cloud Gateway</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="multi_pr01.html">Next</a></td></tr></table><hr></div><div lang="en" class="book"><div class="titlepage"><div><div><h1 class="title"><a name="d0e3"></a>Spring Cloud Gateway</h1></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="preface"><a href="multi_pr01.html"></a></span></dt><dt><span class="chapter"><a href="multi_gateway-starter.html">1. How to Include Spring Cloud Gateway</a></span></dt><dt><span class="chapter"><a href="multi__building_a_gateway_using_spring_mvc.html">2. Building a Gateway Using Spring MVC</a></span></dt></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="multi_pr01.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"> </td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
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<title>Spring Cloud Gateway</title><link rel="stylesheet" type="text/css" href="css/manual-singlepage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div lang="en" class="book"><div class="titlepage"><div><div><h1 class="title"><a name="d0e3"></a>Spring Cloud Gateway</h1></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="preface"><a href="#d0e9"></a></span></dt><dt><span class="chapter"><a href="#gateway-starter">1. How to Include Spring Cloud Gateway</a></span></dt><dt><span class="chapter"><a href="#_building_a_gateway_using_spring_mvc">2. Building a Gateway Using Spring MVC</a></span></dt></dl></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a name="d0e9" href="#d0e9"></a></h1></div></div></div><p><span class="strong"><strong>1.0.0.BUILD-SNAPSHOT</strong></span></p><p>This project provides a library for building an API Gateway on top of Spring MVC. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.</p></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="gateway-starter" href="#gateway-starter"></a>1. How to Include Spring Cloud Gateway</h1></div></div></div><p>To include Spring Cloud Gateway in your project add a dependency with group <code class="literal">org.springframework.cloud</code> and artifact id <code class="literal">spring-cloud-gateway-mvc</code>. See the <a class="link" href="http://projects.spring.io/spring-cloud/" target="_top">Spring Cloud Project page</a> for details on setting up your build system with the current Spring Cloud Release Train.</p></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="_building_a_gateway_using_spring_mvc" href="#_building_a_gateway_using_spring_mvc"></a>2. Building a Gateway Using Spring MVC</h1></div></div></div><p>Spring Cloud Gateway provides a utility object called <code class="literal">ProxyExchange</code> which you can use inside a regular Spring MVC handler as a method parameter. It supports basic downstream HTTP exchanges via methods that mirror the HTTP verbs, or forwarding to a local handler via the <code class="literal">forward()</code> method.</p><p>Example (proxying a request to "/test" downstream to a remote server):</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@RestController</span></em>
|
||||
<em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span> GatewaySampleApplication {
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@Value("${remote.home}")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">private</span> URI home;
|
||||
|
||||
<em><span class="hl-annotation" style="color: gray">@GetMapping("/test")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxy(ProxyExchange<Object> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/image/png"</span>).get();
|
||||
}
|
||||
|
||||
}</pre><p>There are convenience methods on the <code class="literal">ProxyExchange</code> to enable the handler method to discover and enhance the URI path of the incoming request. For example you might want to extract the trailing elements of a path to pass them downstream:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@GetMapping("/proxy/path/**")</span></em>
|
||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> ResponseEntity<?> proxyPath(ProxyExchange<?> proxy) <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">throws</span> Exception {
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||||
String path = proxy.path(<span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/proxy/path/"</span>);
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||||
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> proxy.uri(home.toString() + <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"/foos/"</span> + path).get();
|
||||
}</pre><p>All the features of Spring MVC are available to Gateway handler methods. So you can inject request headers and query parameters, for instance, and you can constrain the incoming requests with declarations in the mapping annotation. See the documentation for <code class="literal">@RequestMapping</code> in Spring MVC for more details of those features.</p><p>Headers can be added to the downstream response using the <code class="literal">header()</code> methods on <code class="literal">ProxyExchange</code>.</p><p>You can also manipulate response headers (and anything else you like in the response) by adding a mapper to the <code class="literal">get()</code> etc. method. The mapper is a <code class="literal">Function</code> that takes the incoming <code class="literal">ResponseEntity</code> and converts it to an outgoing one.</p><p>First class support is provided for "sensitive" headers ("cookie" and "authorization" by default) which are not passed downstream, and for "proxy" headers (<code class="literal">x-forwarded-*</code>).</p></div></div></body></html>
|
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|
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<info>
|
||||
<title>Spring Cloud Gateway</title>
|
||||
<date>2017-08-29</date>
|
||||
</info>
|
||||
<preface>
|
||||
<title></title>
|
||||
<simpara><emphasis role="strong">1.0.0.BUILD-SNAPSHOT</emphasis></simpara>
|
||||
<simpara>This project provides a library for building an API Gateway on top of Spring MVC. Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.</simpara>
|
||||
</preface>
|
||||
<chapter xml:id="gateway-starter">
|
||||
<title>How to Include Spring Cloud Gateway</title>
|
||||
<simpara>To include Spring Cloud Gateway in your project add a dependency with group <literal>org.springframework.cloud</literal> and artifact id <literal>spring-cloud-gateway-mvc</literal>. See the <link xl:href="http://projects.spring.io/spring-cloud/">Spring Cloud Project page</link> for details on setting up your build system with the current Spring Cloud Release Train.</simpara>
|
||||
</chapter>
|
||||
<chapter xml:id="_building_a_gateway_using_spring_mvc">
|
||||
<title>Building a Gateway Using Spring MVC</title>
|
||||
<simpara>Spring Cloud Gateway provides a utility object called <literal>ProxyExchange</literal> which you can use inside a regular Spring MVC handler as a method parameter. It supports basic downstream HTTP exchanges via methods that mirror the HTTP verbs, or forwarding to a local handler via the <literal>forward()</literal> method.</simpara>
|
||||
<simpara>Example (proxying a request to "/test" downstream to a remote server):</simpara>
|
||||
<programlisting language="java" linenumbering="unnumbered">@RestController
|
||||
@SpringBootApplication
|
||||
public class GatewaySampleApplication {
|
||||
|
||||
@Value("${remote.home}")
|
||||
private URI home;
|
||||
|
||||
@GetMapping("/test")
|
||||
public ResponseEntity<?> proxy(ProxyExchange<Object> proxy) throws Exception {
|
||||
return proxy.uri(home.toString() + "/image/png").get();
|
||||
}
|
||||
|
||||
}</programlisting>
|
||||
<simpara>There are convenience methods on the <literal>ProxyExchange</literal> to enable the handler method to discover and enhance the URI path of the incoming request. For example you might want to extract the trailing elements of a path to pass them downstream:</simpara>
|
||||
<programlisting language="java" linenumbering="unnumbered">@GetMapping("/proxy/path/**")
|
||||
public ResponseEntity<?> proxyPath(ProxyExchange<?> proxy) throws Exception {
|
||||
String path = proxy.path("/proxy/path/");
|
||||
return proxy.uri(home.toString() + "/foos/" + path).get();
|
||||
}</programlisting>
|
||||
<simpara>All the features of Spring MVC are available to Gateway handler methods. So you can inject request headers and query parameters, for instance, and you can constrain the incoming requests with declarations in the mapping annotation. See the documentation for <literal>@RequestMapping</literal> in Spring MVC for more details of those features.</simpara>
|
||||
<simpara>Headers can be added to the downstream response using the <literal>header()</literal> methods on <literal>ProxyExchange</literal>.</simpara>
|
||||
<simpara>You can also manipulate response headers (and anything else you like in the response) by adding a mapper to the <literal>get()</literal> etc. method. The mapper is a <literal>Function</literal> that takes the incoming <literal>ResponseEntity</literal> and converts it to an outgoing one.</simpara>
|
||||
<simpara>First class support is provided for "sensitive" headers ("cookie" and "authorization" by default) which are not passed downstream, and for "proxy" headers (<literal>x-forwarded-*</literal>).</simpara>
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</chapter>
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</book>
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||||
|
||||
div.footnote p {
|
||||
margin: 0;
|
||||
line-height: 1;
|
||||
}
|
||||
|
||||
div.footnote p sup {
|
||||
margin-right: 6px;
|
||||
vertical-align: middle;
|
||||
}
|
||||
|
||||
div.navheader {
|
||||
border-bottom: 1px solid #CCCCCC;
|
||||
}
|
||||
|
||||
div.navfooter {
|
||||
border-top: 1px solid #CCCCCC;
|
||||
}
|
||||
|
||||
.title {
|
||||
margin-left: -1em;
|
||||
padding-left: 1em;
|
||||
}
|
||||
|
||||
.title>a {
|
||||
position: absolute;
|
||||
visibility: hidden;
|
||||
display: block;
|
||||
font-size: 0.85em;
|
||||
margin-top: 0.05em;
|
||||
margin-left: -1em;
|
||||
vertical-align: text-top;
|
||||
color: black;
|
||||
}
|
||||
|
||||
.title>a:before {
|
||||
content: "\00A7";
|
||||
}
|
||||
|
||||
.title:hover>a,.title>a:hover,.title:hover>a:hover {
|
||||
visibility: visible;
|
||||
}
|
||||
|
||||
.title:focus>a,.title>a:focus,.title:focus>a:focus {
|
||||
outline: 0;
|
||||
}
|
||||
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Before Width: | Height: | Size: 18 KiB |
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Reference in New Issue
Block a user