{"id":1502,"date":"2023-03-25T13:52:58","date_gmt":"2023-03-25T05:52:58","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1502"},"modified":"2023-04-28T20:24:19","modified_gmt":"2023-04-28T12:24:19","slug":"spring-cloud-gets-local-service-instance-method-getlocalserviceinstance-outdated","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/25\/spring-cloud-gets-local-service-instance-method-getlocalserviceinstance-outdated\/","title":{"rendered":"Spring Cloud\u83b7\u53d6\u672c\u5730\u670d\u52a1\u5b9e\u4f8b\u65b9\u6cd5getLocalServiceInstance()\u8fc7\u65f6"},"content":{"rendered":"<p>\u5728\u4f7f\u7528<code>discoveryClient.getLocalServiceInstance()<\/code>\u65f6\uff0c\u53d1\u73b0\u8be5\u65b9\u6cd5\u5df2\u7ecf\u8fc7\u65f6\u3002\u6e90\u7801\u63d0\u793a\u4f7f\u7528<code>org.springframework.cloud.client.serviceregistry.Registration<\/code>\uff0c\u8be5\u7c7b\u53ef\u4ee5\u6839\u636e\u670d\u52a1\u540d\uff0c\u83b7\u53d6\u6ce8\u518c\u4e86\u8be5\u670d\u52a1\u540d\u7684\u6240\u6709\u5b9e\u4f8b\u3002\u5177\u4f53\u4f7f\u7528\u5982\u4e0b\u7684<code>testBalance()<\/code>\u548c<code>serviceInstance()<\/code>\u65b9\u6cd5\u3002<\/p>\n<p><!-- more --><\/p>\n<pre><code class=\"language-java\">import java.util.List;\n\nimport org.apache.log4j.Logger;\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.cloud.client.ServiceInstance;\nimport org.springframework.cloud.client.discovery.DiscoveryClient;\nimport org.springframework.cloud.client.serviceregistry.Registration;\nimport org.springframework.cloud.netflix.eureka.EurekaDiscoveryClient;\nimport org.springframework.web.bind.annotation.RequestMapping;\nimport org.springframework.web.bind.annotation.RequestMethod;\nimport org.springframework.web.bind.annotation.RequestParam;\nimport org.springframework.web.bind.annotation.RestController;\n\n@RestController\npublic class AController {\n\n    private final Logger logger = Logger.getLogger(getClass());\n\n    @Autowired\n    private Registration registration;  \/\/ \u670d\u52a1\u6ce8\u518c\n\n    @Autowired\n    private DiscoveryClient client;  \/\/ \u670d\u52a1\u53d1\u73b0\u5ba2\u6237\u7aef\n\n    @Value(&quot;${server.port}&quot;)\n    private int port;\n\n    @RequestMapping(value = &quot;\/test&quot;, method = RequestMethod.GET)\n    public String test(@RequestParam String param) {\n        ServiceInstance instance = client.getLocalServiceInstance();\n        logger.info(&quot;\/test, host:&quot; + instance.getHost() + &quot;, service_id:&quot; + instance.getServiceId() + &quot;, result:&quot; + param);\n        return &quot;From Service-A, Param is &quot; + param;\n    }\n\n    @RequestMapping(value = &quot;\/testBalance&quot;, method = RequestMethod.GET)\n    public String testBalance(@RequestParam String param) {\n        ServiceInstance instance = serviceInstance();\n        String result = &quot;\/testBalance, host:port=&quot; + instance.getUri()  + &quot;, &quot;\n                + &quot;service_id:&quot; + instance.getServiceId();\n        logger.info(result);\n        return &quot;From Service-A , &quot; + result;\n    }\n\n    public ServiceInstance serviceInstance() {\n        List&lt;ServiceInstance&gt; list = client.getInstances(registration.getServiceId());\n        if (list != null &amp;&amp; list.size() &gt; 0) {\n            for (ServiceInstance instance : list) {\n                if (instance.getPort() == port)\n                    return instance;\n            }   \n        }\n        return null;\n    }\n}<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\u6ce8\u5165\u4e86<code>Registration<\/code>\u548c<code>DiscoveryClient<\/code>\u4e24\u4e2a\u5bf9\u8c61\uff1a<\/p>\n<p>\uff081\uff09<code>Registration<\/code>\u670d\u52a1\u6ce8\u518c\u63a5\u53e3\uff0c\u5305\u542b\u4e86\u83b7\u53d6\u670d\u52a1 ID \u7684\u65b9\u6cd5\u3002<br \/>\n\uff082\uff09<code>DiscoveryClient<\/code>\u670d\u52a1\u53d1\u73b0\u5ba2\u6237\u7aef\uff0c\u5177\u6709\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><code>String description();<\/code> \u83b7\u53d6\u63cf\u8ff0<\/li>\n<li><code>ServiceInstance getLocalServiceInstance(); @Deprecated<\/code> \u83b7\u53d6\u672c\u5730\u670d\u52a1\u5b9e\u4f8b\uff0c\u65b9\u6cd5\u88ab\u5220\u9664\uff0c\u63a8\u8350\u4e0d\u8981\u4f7f\u7528<\/li>\n<li><code>List getInstances(String serviceId);<\/code> \u901a\u8fc7\u670d\u52a1 ID\uff0c\u83b7\u53d6\u5f53\u524d\u670d\u52a1\u7684\u670d\u52a1\u5b9e\u4f8b<\/li>\n<li><code>List getServices();<\/code> \u83b7\u53d6\u6240\u6709\u670d\u52a1 ID \u5217\u8868<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u4f7f\u7528discoveryClient.getLocalServiceInstance()\u65f6\uff0c\u53d1\u73b0\u8be5\u65b9\u6cd5\u5df2\u7ecf\u8fc7\u65f6 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[],"class_list":["post-1502","post","type-post","status-publish","format-standard","hentry","category-spring-cloud"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1502","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1502"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1502\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}