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Spring Operator 35d3596555 URL Cleanup (#224) 
This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).

# HTTP URLs that Could Not Be Fixed
These URLs were unable to be fixed. Please review them to see if they can be manually resolved.

* [ ] http://erik.eae.net/archives/2007/07/27/18.54.15/ (200) with 1 occurrences could not be migrated:
   ([https](https://erik.eae.net/archives/2007/07/27/18.54.15/) result SSLHandshakeException).
* [ ] http://javascript.nwbox.com/IEContentLoaded/ (200) with 1 occurrences could not be migrated:
   ([https](https://javascript.nwbox.com/IEContentLoaded/) result SSLHandshakeException).
* [ ] http://blindsignals.com/index.php/2009/07/jquery-delay/ (301) with 1 occurrences could not be migrated:
   ([https](https://blindsignals.com/index.php/2009/07/jquery-delay/) result SSLHandshakeException).

# Fixed URLs

## Fixed But Review Recommended
These URLs were fixed, but the https status was not OK. However, the https status was the same as the http request or http redirected to an https URL, so they were migrated. Your review is recommended.

* [ ] http://fontawesome.io (301) with 4 occurrences migrated to:
  https://fontawesome.com?from=io ([https](https://fontawesome.io) result AnnotatedConnectException).
* [ ] http://jsperf.com/getall-vs-sizzle/2 (301) with 1 occurrences migrated to:
  https://jsperf.com/getall-vs-sizzle/2 ([https](https://jsperf.com/getall-vs-sizzle/2) result ReadTimeoutException).
* [ ] http://zenorocha.mit-license.org (301) with 1 occurrences migrated to:
  https://zenorocha.mit-license.org/ ([https](https://zenorocha.mit-license.org) result NullPointerException).
* [ ] http://wiki.ecmascript.org/doku.php?id=harmony:egal (ConnectTimeoutException) with 1 occurrences migrated to:
  https://wiki.ecmascript.org/doku.php?id=harmony:egal ([https](https://wiki.ecmascript.org/doku.php?id=harmony:egal) result ConnectTimeoutException).
* [ ] http://www.w3.org/TR/html4/loose.dtd (ReadTimeoutException) with 1 occurrences migrated to:
  https://www.w3.org/TR/html4/loose.dtd ([https](https://www.w3.org/TR/html4/loose.dtd) result ReadTimeoutException).
* [ ] http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ (301) with 1 occurrences migrated to:
  https://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ ([https](https://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/) result 404).
* [ ] http://github.com/sprinframework (301) with 4 occurrences migrated to:
  https://github.com/sprinframework ([https](https://github.com/sprinframework) result 404).
* [ ] http://github.com/spring_hadoop (301) with 4 occurrences migrated to:
  https://github.com/spring_hadoop ([https](https://github.com/spring_hadoop) result 404).
* [ ] http://json.org/json2.js (404) with 1 occurrences migrated to:
  https://json.org/json2.js ([https](https://json.org/json2.js) result 404).
* [ ] http://pivotal.github.com/jasmine (404) with 1 occurrences migrated to:
  https://pivotal.github.com/jasmine ([https](https://pivotal.github.com/jasmine) result 404).

## Fixed Success
These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.

* [ ] http://asciidoctor.org with 1 occurrences migrated to:
  https://asciidoctor.org ([https](https://asciidoctor.org) result 200).
* [ ] http://backbonejs.org with 1 occurrences migrated to:
  https://backbonejs.org ([https](https://backbonejs.org) result 200).
* [ ] http://bugs.jquery.com/ticket/12282 with 1 occurrences migrated to:
  https://bugs.jquery.com/ticket/12282 ([https](https://bugs.jquery.com/ticket/12282) result 200).
* [ ] http://bugs.jquery.com/ticket/12359 with 1 occurrences migrated to:
  https://bugs.jquery.com/ticket/12359 ([https](https://bugs.jquery.com/ticket/12359) result 200).
* [ ] http://bugs.jquery.com/ticket/13378 with 1 occurrences migrated to:
  https://bugs.jquery.com/ticket/13378 ([https](https://bugs.jquery.com/ticket/13378) result 200).
* [ ] http://cdnjs.cloudflare.com/ajax/libs/zepto/1.2.0/zepto.min.js with 4 occurrences migrated to:
  https://cdnjs.cloudflare.com/ajax/libs/zepto/1.2.0/zepto.min.js ([https](https://cdnjs.cloudflare.com/ajax/libs/zepto/1.2.0/zepto.min.js) result 200).
* [ ] http://creativecommons.org/licenses/by/3.0/ with 2 occurrences migrated to:
  https://creativecommons.org/licenses/by/3.0/ ([https](https://creativecommons.org/licenses/by/3.0/) result 200).
* [ ] http://curator.apache.org with 9 occurrences migrated to:
  https://curator.apache.org ([https](https://curator.apache.org) result 200).
* [ ] http://curator.apache.org/curator-x-discovery/ with 9 occurrences migrated to:
  https://curator.apache.org/curator-x-discovery/ ([https](https://curator.apache.org/curator-x-discovery/) result 200).
* [ ] http://diveintohtml5.info/history.html with 1 occurrences migrated to:
  https://diveintohtml5.info/history.html ([https](https://diveintohtml5.info/history.html) result 200).
* [ ] http://docs.spring.io/spring-data/jpa/docs/1.3.4.RELEASE/api/ with 1 occurrences migrated to:
  https://docs.spring.io/spring-data/jpa/docs/1.3.4.RELEASE/api/ ([https](https://docs.spring.io/spring-data/jpa/docs/1.3.4.RELEASE/api/) result 200).
* [ ] http://docs.spring.io/spring-data/jpa/docs/1.3.4.RELEASE/reference/html/ with 1 occurrences migrated to:
  https://docs.spring.io/spring-data/jpa/docs/1.3.4.RELEASE/reference/html/ ([https](https://docs.spring.io/spring-data/jpa/docs/1.3.4.RELEASE/reference/html/) result 200).
* [ ] http://docs.spring.io/spring-data/jpa/docs/1.4.0.RC1/api/ with 1 occurrences migrated to:
  https://docs.spring.io/spring-data/jpa/docs/1.4.0.RC1/api/ ([https](https://docs.spring.io/spring-data/jpa/docs/1.4.0.RC1/api/) result 200).
* [ ] http://docs.spring.io/spring-data/jpa/docs/1.4.0.RC1/reference/html/ with 1 occurrences migrated to:
  https://docs.spring.io/spring-data/jpa/docs/1.4.0.RC1/reference/html/ ([https](https://docs.spring.io/spring-data/jpa/docs/1.4.0.RC1/reference/html/) result 200).
* [ ] http://github.com/spring-cloud/spring-cloud-zookeeper with 1 occurrences migrated to:
  https://github.com/spring-cloud/spring-cloud-zookeeper ([https](https://github.com/spring-cloud/spring-cloud-zookeeper) result 200).
* [ ] http://github.com/spring-projects/gh-pages with 1 occurrences migrated to:
  https://github.com/spring-projects/gh-pages ([https](https://github.com/spring-projects/gh-pages) result 200).
* [ ] http://grigio.org with 1 occurrences migrated to:
  https://grigio.org ([https](https://grigio.org) result 200).
* [ ] http://imgs.mi9.com/uploads/landscape/2101/beautiful-leaf-wallpapers_1280x960_28083.jpg with 1 occurrences migrated to:
  https://imgs.mi9.com/uploads/landscape/2101/beautiful-leaf-wallpapers_1280x960_28083.jpg ([https](https://imgs.mi9.com/uploads/landscape/2101/beautiful-leaf-wallpapers_1280x960_28083.jpg) result 200).
* [ ] http://jekyllrb.com with 1 occurrences migrated to:
  https://jekyllrb.com ([https](https://jekyllrb.com) result 200).
* [ ] http://jquery.com/ with 1 occurrences migrated to:
  https://jquery.com/ ([https](https://jquery.com/) result 200).
* [ ] http://nn.mit-license.org/ with 1 occurrences migrated to:
  https://nn.mit-license.org/ ([https](https://nn.mit-license.org/) result 200).
* [ ] http://opensource.org/licenses/mit-license.html with 2 occurrences migrated to:
  https://opensource.org/licenses/mit-license.html ([https](https://opensource.org/licenses/mit-license.html) result 200).
* [ ] http://pages.github.com/ with 1 occurrences migrated to:
  https://pages.github.com/ ([https](https://pages.github.com/) result 200).
* [ ] http://rubygems.org with 1 occurrences migrated to:
  https://rubygems.org ([https](https://rubygems.org) result 200).
* [ ] http://rubygems.org/ with 1 occurrences migrated to:
  https://rubygems.org/ ([https](https://rubygems.org/) result 200).
* [ ] http://silviomoreto.github.io/bootstrap-select/ with 2 occurrences migrated to:
  https://silviomoreto.github.io/bootstrap-select/ ([https](https://silviomoreto.github.io/bootstrap-select/) result 200).
* [ ] http://sizzlejs.com/ with 2 occurrences migrated to:
  https://sizzlejs.com/ ([https](https://sizzlejs.com/) result 200).
* [ ] http://spring.io/guides/gs/gradle/ with 1 occurrences migrated to:
  https://spring.io/guides/gs/gradle/ ([https](https://spring.io/guides/gs/gradle/) result 200).
* [ ] http://spring.io/guides/gs/maven/ with 1 occurrences migrated to:
  https://spring.io/guides/gs/maven/ ([https](https://spring.io/guides/gs/maven/) result 200).
* [ ] http://spring.io/projects/spring-cloud-zookeeper with 4 occurrences migrated to:
  https://spring.io/projects/spring-cloud-zookeeper ([https](https://spring.io/projects/spring-cloud-zookeeper) result 200).
* [ ] http://stackoverflow.com/questions/tagged/spring-cloud with 1 occurrences migrated to:
  https://stackoverflow.com/questions/tagged/spring-cloud ([https](https://stackoverflow.com/questions/tagged/spring-cloud) result 200).
* [ ] http://stackoverflow.com/questions/tagged/spring-data-jpa with 1 occurrences migrated to:
  https://stackoverflow.com/questions/tagged/spring-data-jpa ([https](https://stackoverflow.com/questions/tagged/spring-data-jpa) result 200).
* [ ] http://twitter.com/byscuits with 2 occurrences migrated to:
  https://twitter.com/byscuits ([https](https://twitter.com/byscuits) result 200).
* [ ] http://twitter.com/fontawesome with 2 occurrences migrated to:
  https://twitter.com/fontawesome ([https](https://twitter.com/fontawesome) result 200).
* [ ] http://underscorejs.org with 1 occurrences migrated to:
  https://underscorejs.org ([https](https://underscorejs.org) result 200).
* [ ] http://kyruus.com (301) with 2 occurrences migrated to:
  https://www.kyruus.com/ ([https](https://kyruus.com) result 200).
* [ ] http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html with 1 occurrences migrated to:
  https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html ([https](https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html) result 200).
* [ ] http://www.w3.org/TR/2011/REC-css3-selectors-20110929/ with 2 occurrences migrated to:
  https://www.w3.org/TR/2011/REC-css3-selectors-20110929/ ([https](https://www.w3.org/TR/2011/REC-css3-selectors-20110929/) result 200).
* [ ] http://www.w3.org/TR/CSS21/syndata.html with 2 occurrences migrated to:
  https://www.w3.org/TR/CSS21/syndata.html ([https](https://www.w3.org/TR/CSS21/syndata.html) result 200).
* [ ] http://www.w3.org/TR/selectors/ with 4 occurrences migrated to:
  https://www.w3.org/TR/selectors/ ([https](https://www.w3.org/TR/selectors/) result 200).
* [ ] http://zookeeper.apache.org/doc/current/zookeeperOver.html with 9 occurrences migrated to:
  https://zookeeper.apache.org/doc/current/zookeeperOver.html ([https](https://zookeeper.apache.org/doc/current/zookeeperOver.html) result 200).
* [ ] http://zookeeper.apache.org/doc/current/zookeeperStarted.html with 9 occurrences migrated to:
  https://zookeeper.apache.org/doc/current/zookeeperStarted.html ([https](https://zookeeper.apache.org/doc/current/zookeeperStarted.html) result 200).
* [ ] http://dev.w3.org/csswg/cssom/ with 1 occurrences migrated to:
  https://dev.w3.org/csswg/cssom/ ([https](https://dev.w3.org/csswg/cssom/) result 301).
* [ ] http://docs.python.org/library/functions.html with 1 occurrences migrated to:
  https://docs.python.org/library/functions.html ([https](https://docs.python.org/library/functions.html) result 301).
* [ ] http://forum.spring.io/forum/spring-projects/data with 1 occurrences migrated to:
  https://forum.spring.io/forum/spring-projects/data ([https](https://forum.spring.io/forum/spring-projects/data) result 301).
* [ ] http://github.com/SpringSource/spring-data-jpa with 1 occurrences migrated to:
  https://github.com/SpringSource/spring-data-jpa ([https](https://github.com/SpringSource/spring-data-jpa) result 301).
* [ ] http://github.com/pivotal/jasmine-ajax with 1 occurrences migrated to:
  https://github.com/pivotal/jasmine-ajax ([https](https://github.com/pivotal/jasmine-ajax) result 301).
* [ ] http://helpful.knobs-dials.com/index.php/Component_returned_failure_code:_0x80040111_ with 1 occurrences migrated to:
  https://helpful.knobs-dials.com/index.php/Component_returned_failure_code:_0x80040111_ ([https](https://helpful.knobs-dials.com/index.php/Component_returned_failure_code:_0x80040111_) result 301).
* [ ] http://jira.springsource.org/browse/DATAJPA with 1 occurrences migrated to:
  https://jira.springsource.org/browse/DATAJPA ([https](https://jira.springsource.org/browse/DATAJPA) result 301).
* [ ] http://jquery.org/license with 2 occurrences migrated to:
  https://jquery.org/license ([https](https://jquery.org/license) result 301).
* [ ] http://projects.spring.io/spring-data-jpa with 1 occurrences migrated to:
  https://projects.spring.io/spring-data-jpa ([https](https://projects.spring.io/spring-data-jpa) result 301).
* [ ] http://spring-projects.github.io/ with 1 occurrences migrated to:
  https://spring-projects.github.io/ ([https](https://spring-projects.github.io/) result 301).
* [ ] http://twitter.github.com/bootstrap/javascript.html with 13 occurrences migrated to:
  https://twitter.github.com/bootstrap/javascript.html ([https](https://twitter.github.com/bootstrap/javascript.html) result 301).
* [ ] http://www.modernizr.com/ with 1 occurrences migrated to:
  https://www.modernizr.com/ ([https](https://www.modernizr.com/) result 301).
* [ ] http://www.spring.io with 8 occurrences migrated to:
  https://www.spring.io ([https](https://www.spring.io) result 301).
* [ ] http://www.w3.org/TR/css3-selectors/ with 2 occurrences migrated to:
  https://www.w3.org/TR/css3-selectors/ ([https](https://www.w3.org/TR/css3-selectors/) result 301).
* [ ] http://www.w3.org/TR/css3-syntax/ with 1 occurrences migrated to:
  https://www.w3.org/TR/css3-syntax/ ([https](https://www.w3.org/TR/css3-syntax/) result 301).
* [ ] http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx with 2 occurrences migrated to:
  https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx ([https](https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx) result 302).
* [ ] http://repo.spring.io/milestone with 4 occurrences migrated to:
  https://repo.spring.io/milestone ([https](https://repo.spring.io/milestone) result 302).
* [ ] http://scripts.sil.org/OFL with 2 occurrences migrated to:
  https://scripts.sil.org/OFL ([https](https://scripts.sil.org/OFL) result 302).
* [ ] http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context with 1 occurrences migrated to:
  https://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context ([https](https://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context) result 302).

# Ignored
These URLs were intentionally ignored.

* http://docbook.org/ns/docbook with 350 occurrences
* http://localhost:4000/spring-xyz/ with 1 occurrences
* http://localhost:8081/service-registry with 3 occurrences
* http://localhost:8081/service-registry/instance-status with 6 occurrences
* http://www with 1 occurrences
* http://www.w3.org/1999/xhtml with 2 occurrences
* http://www.w3.org/1999/xlink with 1 occurrences
* http://www.w3.org/2000/svg with 1 occurrences
2019-03-27 19:21:37 -04:00

53 lines
9.5 KiB
HTML
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<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>2.&nbsp;Service Discovery with Zookeeper</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-zookeeper.html" title="Spring Cloud Zookeeper"><link rel="up" href="multi_spring-cloud-zookeeper.html" title="Spring Cloud Zookeeper"><link rel="prev" href="multi_spring-cloud-zookeeper-install.html" title="1.&nbsp;Install Zookeeper"><link rel="next" href="multi_spring-cloud-zookeeper-netflix.html" title="3.&nbsp;Using Spring Cloud Zookeeper with Spring Cloud Netflix Components"></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.&nbsp;Service Discovery with Zookeeper</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="multi_spring-cloud-zookeeper-install.html">Prev</a>&nbsp;</td><th width="60%" align="center">&nbsp;</th><td width="20%" align="right">&nbsp;<a accesskey="n" href="multi_spring-cloud-zookeeper-netflix.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="spring-cloud-zookeeper-discovery" href="#spring-cloud-zookeeper-discovery"></a>2.&nbsp;Service Discovery with Zookeeper</h1></div></div></div><p>Service Discovery is one of the key tenets of a microservice based architecture. Trying to
hand-configure each client or some form of convention can be difficult to do and can be
brittle. <a class="link" href="https://curator.apache.org" target="_top">Curator</a>(A Java library for Zookeeper) provides Service
Discovery through a <a class="link" href="https://curator.apache.org/curator-x-discovery/" target="_top">Service Discovery
Extension</a>. Spring Cloud Zookeeper uses this extension for service registration and
discovery.</p><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_activating" href="#_activating"></a>2.1&nbsp;Activating</h2></div></div></div><p>Including a dependency on
<code class="literal">org.springframework.cloud:spring-cloud-starter-zookeeper-discovery</code> enables
autoconfiguration that sets up Spring Cloud Zookeeper Discovery.</p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Note"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="images/note.png"></td><th align="left">Note</th></tr><tr><td align="left" valign="top"><p>For web functionality, you still need to include
<code class="literal">org.springframework.boot:spring-boot-starter-web</code>.</p></td></tr></table></div><div class="caution" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Caution"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Caution]" src="images/caution.png"></td><th align="left">Caution</th></tr><tr><td align="left" valign="top"><p>When working with version 3.4 of Zookeeper you need to change
the way you include the dependency as described <a class="link" href="multi_spring-cloud-zookeeper-install.html" title="1.&nbsp;Install Zookeeper">here</a>.</p></td></tr></table></div></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_registering_with_zookeeper" href="#_registering_with_zookeeper"></a>2.2&nbsp;Registering with Zookeeper</h2></div></div></div><p>When a client registers with Zookeeper, it provides metadata (such as host and port, ID,
and name) about itself.</p><p>The following example shows a Zookeeper client:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@SpringBootApplication</span></em>
<em><span class="hl-annotation" style="color: gray">@RestController</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> Application {
<em><span class="hl-annotation" style="color: gray">@RequestMapping("/")</span></em>
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> String home() {
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"Hello world"</span>;
}
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">static</span> <span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">void</span> main(String[] args) {
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">new</span> SpringApplicationBuilder(Application.<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">class</span>).web(true).run(args);
}
}</pre><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Note"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="images/note.png"></td><th align="left">Note</th></tr><tr><td align="left" valign="top"><p>The preceding example is a normal Spring Boot application.</p></td></tr></table></div><p>If Zookeeper is located somewhere other than <code class="literal">localhost:2181</code>, the configuration must
provide the location of the server, as shown in the following example:</p><p><b>application.yml.&nbsp;</b>
</p><pre class="programlisting">spring:
cloud:
zookeeper:
connect-string: localhost:2181</pre><p>
</p><div class="caution" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Caution"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Caution]" src="images/caution.png"></td><th align="left">Caution</th></tr><tr><td align="left" valign="top"><p>If you use <a class="link" href="multi_spring-cloud-zookeeper-config.html" title="7.&nbsp;Distributed Configuration with Zookeeper">Spring Cloud Zookeeper Config</a>, the
values shown in the preceding example need to be in <code class="literal">bootstrap.yml</code> instead of
<code class="literal">application.yml</code>.</p></td></tr></table></div><p>The default service name, instance ID, and port (taken from the <code class="literal">Environment</code>) are
<code class="literal">${spring.application.name}</code>, the Spring Context ID, and <code class="literal">${server.port}</code>, respectively.</p><p>Having <code class="literal">spring-cloud-starter-zookeeper-discovery</code> on the classpath makes the app into both
a Zookeeper <span class="quote">&#8220;<span class="quote">service</span>&#8221;</span> (that is, it registers itself) and a <span class="quote">&#8220;<span class="quote">client</span>&#8221;</span> (that is, it can
query Zookeeper to locate other services).</p><p>If you would like to disable the Zookeeper Discovery Client, you can set
<code class="literal">spring.cloud.zookeeper.discovery.enabled</code> to <code class="literal">false</code>.</p></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="_using_the_discoveryclient" href="#_using_the_discoveryclient"></a>2.3&nbsp;Using the DiscoveryClient</h2></div></div></div><p>Spring Cloud has support for
<a class="link" href="https://github.com/spring-cloud/spring-cloud-netflix/blob/master/docs/src/main/asciidoc/spring-cloud-netflix.adoc#spring-cloud-feign" target="_top">Feign</a>
(a REST client builder) and
<a class="link" href="https://github.com/spring-cloud/spring-cloud-netflix/blob/master/docs/src/main/asciidoc/spring-cloud-netflix.adoc#spring-cloud-ribbon" target="_top">Spring
<code class="literal">RestTemplate</code></a>, using logical service names instead of physical URLs.</p><p>You can also use the <code class="literal">org.springframework.cloud.client.discovery.DiscoveryClient</code>, which
provides a simple API for discovery clients that is not specific to Netflix, as shown in
the following example:</p><pre class="programlisting"><em><span class="hl-annotation" style="color: gray">@Autowired</span></em>
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">private</span> DiscoveryClient discoveryClient;
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">public</span> String serviceUrl() {
List&lt;ServiceInstance&gt; list = discoveryClient.getInstances(<span xmlns:d="http://docbook.org/ns/docbook" class="hl-string">"STORES"</span>);
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">if</span> (list != null &amp;&amp; list.size() &gt; <span class="hl-number">0</span> ) {
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> list.get(<span class="hl-number">0</span>).getUri().toString();
}
<span xmlns:d="http://docbook.org/ns/docbook" class="hl-keyword">return</span> null;
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