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@@ -216,4 +216,6 @@ is used to annotate a POJO or Map parameter as a query parameter map.</p><p>For
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<xslthl:annotation xmlns:xslthl="http://xslthl.sourceforge.net/">@GetMapping(path = "/demo")</xslthl:annotation>
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String demoEndpoint(<xslthl:annotation xmlns:xslthl="http://xslthl.sourceforge.net/">@SpringQueryMap</xslthl:annotation> Params params);
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}</pre></div></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"> </td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-openfeign.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
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}</pre></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_troubleshooting" href="#_troubleshooting"></a>1.11 Troubleshooting</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_early_initialization_errors" href="#_early_initialization_errors"></a>1.11.1 Early Initialization Errors</h3></div></div></div><p>Depending on how you are using your Feign clients you may see initialization errors when starting your application.
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To work around this problem you can use an <code class="literal">ObjectProvider</code> when autowiring your client.</p><pre class="programlisting"><xslthl:annotation xmlns:xslthl="http://xslthl.sourceforge.net/">@Autowired</xslthl:annotation>
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ObjectProvider<TestFeginClient> testFeginClient;</pre></div></div></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"> </td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="multi_spring-cloud-openfeign.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
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@@ -1,3 +1,3 @@
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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 OpenFeign</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="multi_spring-cloud-openfeign.html" title="Spring Cloud OpenFeign"><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 OpenFeign</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 OpenFeign</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_spring-cloud-feign.html">1. Declarative REST Client: Feign</a></span></dt><dd><dl><dt><span class="section"><a href="multi_spring-cloud-feign.html#netflix-feign-starter">1.1. How to Include Feign</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#spring-cloud-feign-overriding-defaults">1.2. Overriding Feign Defaults</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_creating_feign_clients_manually">1.3. Creating Feign Clients Manually</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#spring-cloud-feign-hystrix">1.4. Feign Hystrix Support</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#spring-cloud-feign-hystrix-fallback">1.5. Feign Hystrix Fallbacks</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_feign_and_primary">1.6. Feign and <code class="literal">@Primary</code></a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#spring-cloud-feign-inheritance">1.7. Feign Inheritance Support</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_feign_requestresponse_compression">1.8. Feign request/response compression</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_feign_logging">1.9. Feign logging</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_feign_querymap_support">1.10. Feign @QueryMap support</a></span></dt></dl></dd></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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<title>Spring Cloud OpenFeign</title><link rel="stylesheet" type="text/css" href="css/manual-multipage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="multi_spring-cloud-openfeign.html" title="Spring Cloud OpenFeign"><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 OpenFeign</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 OpenFeign</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_spring-cloud-feign.html">1. Declarative REST Client: Feign</a></span></dt><dd><dl><dt><span class="section"><a href="multi_spring-cloud-feign.html#netflix-feign-starter">1.1. How to Include Feign</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#spring-cloud-feign-overriding-defaults">1.2. Overriding Feign Defaults</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_creating_feign_clients_manually">1.3. Creating Feign Clients Manually</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#spring-cloud-feign-hystrix">1.4. Feign Hystrix Support</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#spring-cloud-feign-hystrix-fallback">1.5. Feign Hystrix Fallbacks</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_feign_and_primary">1.6. Feign and <code class="literal">@Primary</code></a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#spring-cloud-feign-inheritance">1.7. Feign Inheritance Support</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_feign_requestresponse_compression">1.8. Feign request/response compression</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_feign_logging">1.9. Feign logging</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_feign_querymap_support">1.10. Feign @QueryMap support</a></span></dt><dt><span class="section"><a href="multi_spring-cloud-feign.html#_troubleshooting">1.11. Troubleshooting</a></span></dt><dd><dl><dt><span class="section"><a href="multi_spring-cloud-feign.html#_early_initialization_errors">1.11.1. Early Initialization Errors</a></span></dt></dl></dd></dl></dd></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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@@ -1,6 +1,6 @@
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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 OpenFeign</title><link rel="stylesheet" type="text/css" href="css/manual-singlepage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"></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 OpenFeign</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="#spring-cloud-feign">1. Declarative REST Client: Feign</a></span></dt><dd><dl><dt><span class="section"><a href="#netflix-feign-starter">1.1. How to Include Feign</a></span></dt><dt><span class="section"><a href="#spring-cloud-feign-overriding-defaults">1.2. Overriding Feign Defaults</a></span></dt><dt><span class="section"><a href="#_creating_feign_clients_manually">1.3. Creating Feign Clients Manually</a></span></dt><dt><span class="section"><a href="#spring-cloud-feign-hystrix">1.4. Feign Hystrix Support</a></span></dt><dt><span class="section"><a href="#spring-cloud-feign-hystrix-fallback">1.5. Feign Hystrix Fallbacks</a></span></dt><dt><span class="section"><a href="#_feign_and_primary">1.6. Feign and <code class="literal">@Primary</code></a></span></dt><dt><span class="section"><a href="#spring-cloud-feign-inheritance">1.7. Feign Inheritance Support</a></span></dt><dt><span class="section"><a href="#_feign_requestresponse_compression">1.8. Feign request/response compression</a></span></dt><dt><span class="section"><a href="#_feign_logging">1.9. Feign logging</a></span></dt><dt><span class="section"><a href="#_feign_querymap_support">1.10. Feign @QueryMap support</a></span></dt></dl></dd></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>2.1.5.BUILD-SNAPSHOT</strong></span></p><p>This project provides OpenFeign integrations for Spring Boot apps through autoconfiguration
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<title>Spring Cloud OpenFeign</title><link rel="stylesheet" type="text/css" href="css/manual-singlepage.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"></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 OpenFeign</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="#spring-cloud-feign">1. Declarative REST Client: Feign</a></span></dt><dd><dl><dt><span class="section"><a href="#netflix-feign-starter">1.1. How to Include Feign</a></span></dt><dt><span class="section"><a href="#spring-cloud-feign-overriding-defaults">1.2. Overriding Feign Defaults</a></span></dt><dt><span class="section"><a href="#_creating_feign_clients_manually">1.3. Creating Feign Clients Manually</a></span></dt><dt><span class="section"><a href="#spring-cloud-feign-hystrix">1.4. Feign Hystrix Support</a></span></dt><dt><span class="section"><a href="#spring-cloud-feign-hystrix-fallback">1.5. Feign Hystrix Fallbacks</a></span></dt><dt><span class="section"><a href="#_feign_and_primary">1.6. Feign and <code class="literal">@Primary</code></a></span></dt><dt><span class="section"><a href="#spring-cloud-feign-inheritance">1.7. Feign Inheritance Support</a></span></dt><dt><span class="section"><a href="#_feign_requestresponse_compression">1.8. Feign request/response compression</a></span></dt><dt><span class="section"><a href="#_feign_logging">1.9. Feign logging</a></span></dt><dt><span class="section"><a href="#_feign_querymap_support">1.10. Feign @QueryMap support</a></span></dt><dt><span class="section"><a href="#_troubleshooting">1.11. Troubleshooting</a></span></dt><dd><dl><dt><span class="section"><a href="#_early_initialization_errors">1.11.1. Early Initialization Errors</a></span></dt></dl></dd></dl></dd></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>2.1.5.BUILD-SNAPSHOT</strong></span></p><p>This project provides OpenFeign integrations for Spring Boot apps through autoconfiguration
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and binding to the Spring Environment and other Spring programming model idioms.</p></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="spring-cloud-feign" href="#spring-cloud-feign"></a>1. Declarative REST Client: Feign</h1></div></div></div><p><a class="link" href="https://github.com/Netflix/feign" target="_top">Feign</a> is a declarative web service client. It makes writing web service clients easier. To use Feign create an interface and annotate it. It has pluggable annotation support including Feign annotations and JAX-RS annotations. Feign also supports pluggable encoders and decoders. Spring Cloud adds support for Spring MVC annotations and for using the same <code class="literal">HttpMessageConverters</code> used by default in Spring Web. Spring Cloud integrates Ribbon and Eureka to provide a load balanced http client when using Feign.</p><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="netflix-feign-starter" href="#netflix-feign-starter"></a>1.1 How to Include Feign</h2></div></div></div><p>To include Feign in your project use the starter with group <code class="literal">org.springframework.cloud</code>
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and artifact id <code class="literal">spring-cloud-starter-openfeign</code>. See the <a class="link" href="https://projects.spring.io/spring-cloud/" target="_top">Spring Cloud Project page</a>
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for details on setting up your build system with the current Spring Cloud Release Train.</p><p>Example spring boot app</p><pre class="programlisting"><xslthl:annotation xmlns:xslthl="http://xslthl.sourceforge.net/">@SpringBootApplication</xslthl:annotation>
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@@ -217,4 +217,6 @@ is used to annotate a POJO or Map parameter as a query parameter map.</p><p>For
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<xslthl:annotation xmlns:xslthl="http://xslthl.sourceforge.net/">@GetMapping(path = "/demo")</xslthl:annotation>
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String demoEndpoint(<xslthl:annotation xmlns:xslthl="http://xslthl.sourceforge.net/">@SpringQueryMap</xslthl:annotation> Params params);
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}</pre></div></div></div></body></html>
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}</pre></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_troubleshooting" href="#_troubleshooting"></a>1.11 Troubleshooting</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_early_initialization_errors" href="#_early_initialization_errors"></a>1.11.1 Early Initialization Errors</h3></div></div></div><p>Depending on how you are using your Feign clients you may see initialization errors when starting your application.
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To work around this problem you can use an <code class="literal">ObjectProvider</code> when autowiring your client.</p><pre class="programlisting"><xslthl:annotation xmlns:xslthl="http://xslthl.sourceforge.net/">@Autowired</xslthl:annotation>
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ObjectProvider<TestFeginClient> testFeginClient;</pre></div></div></div></div></body></html>
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@@ -425,5 +425,15 @@ public class DemoTemplate {
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String demoEndpoint(@SpringQueryMap Params params);
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}</programlisting>
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</section>
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<section xml:id="_troubleshooting">
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<title>Troubleshooting</title>
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<section xml:id="_early_initialization_errors">
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<title>Early Initialization Errors</title>
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<simpara>Depending on how you are using your Feign clients you may see initialization errors when starting your application.
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To work around this problem you can use an <literal>ObjectProvider</literal> when autowiring your client.</simpara>
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<programlisting language="java" linenumbering="unnumbered">@Autowired
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ObjectProvider<TestFeginClient> testFeginClient;</programlisting>
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</section>
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</section>
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</chapter>
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</book>
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