{"id":352,"date":"2022-04-17T10:42:16","date_gmt":"2022-04-17T02:42:16","guid":{"rendered":"https:\/\/blog.lijiajia.top\/?p=352"},"modified":"2026-06-19T21:32:39","modified_gmt":"2026-06-19T13:32:39","slug":"springcloud%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%9a%e5%be%ae%e6%9c%8d%e5%8a%a1-%e4%ba%94","status":"publish","type":"post","link":"https:\/\/blog.ttwow.top\/?p=352","title":{"rendered":"SpringCloud\u5b66\u4e60\u7b14\u8bb0\uff1aFeign\u8d1f\u8f7d\u5747\u8861(\u516d)"},"content":{"rendered":"<h2>\u6982\u8ff0<\/h2>\n<p>Feign\uff1a  \u7f8e[fe\u026an]\u82f1[fe\u026an]<\/p>\n<p>\u5b98\u7f51\u89e3\u91ca\uff1a<br \/>\n<a href=\"http:\/\/projects.spring.io\/spring-cloud\/spring-cloud.html#spring-cloud-feign\">http:\/\/projects.spring.io\/spring-cloud\/spring-cloud.html#spring-cloud-feign<\/a><\/p>\n<p>Feign\u662f\u4e00\u4e2a\u58f0\u660e\u5f0fWebService\u5ba2\u6237\u7aef\u3002\u4f7f\u7528Feign\u80fd\u8ba9\u7f16\u5199Web Service\u5ba2\u6237\u7aef\u66f4\u52a0\u7b80\u5355, \u5b83\u7684\u4f7f\u7528\u65b9\u6cd5\u662f\u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3\uff0c\u7136\u540e\u5728\u4e0a\u9762\u6dfb\u52a0\u6ce8\u89e3\uff0c\u540c\u65f6\u4e5f\u652f\u6301JAX-RS\u6807\u51c6\u7684\u6ce8\u89e3\u3002Feign\u4e5f\u652f\u6301\u53ef\u62d4\u63d2\u5f0f\u7684\u7f16\u7801\u5668\u548c\u89e3\u7801\u5668\u3002Spring Cloud\u5bf9Feign\u8fdb\u884c\u4e86\u5c01\u88c5\uff0c\u4f7f\u5176\u652f\u6301\u4e86Spring MVC\u6807\u51c6\u6ce8\u89e3\u548cHttpMessageConverters\u3002Feign\u53ef\u4ee5\u4e0eEureka\u548cRibbon\u7ec4\u5408\u4f7f\u7528\u4ee5\u652f\u6301\u8d1f\u8f7d\u5747\u8861\u3002<br \/>\n\u0018\uff1b<\/p>\n<p>Feign\u662f\u4e00\u4e2a\u58f0\u660e\u5f0f\u7684Web\u670d\u52a1\u5ba2\u6237\u7aef\uff0c\u4f7f\u5f97\u7f16\u5199Web\u670d\u52a1\u5ba2\u6237\u7aef\u53d8\u5f97\u975e\u5e38\u5bb9\u6613\uff0c<br \/>\n\u53ea\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u63a5\u53e3\uff0c\u7136\u540e\u5728\u4e0a\u9762\u6dfb\u52a0\u6ce8\u89e3\u5373\u53ef\u3002<br \/>\n\u53c2\u8003\u5b98\u7f51\uff1a<a href=\"https:\/\/github.com\/OpenFeign\/feign\">https:\/\/github.com\/OpenFeign\/feign<\/a> <\/p>\n<p>Feign\u80fd\u5e72\u4ec0\u4e48<br \/>\nFeign\u65e8\u5728\u4f7f\u7f16\u5199Java Http\u5ba2\u6237\u7aef\u53d8\u5f97\u66f4\u5bb9\u6613\u3002<br \/>\n\u524d\u9762\u5728\u4f7f\u7528Ribbon+RestTemplate\u65f6\uff0c\u5229\u7528RestTemplate\u5bf9http\u8bf7\u6c42\u7684\u5c01\u88c5\u5904\u7406\uff0c\u5f62\u6210\u4e86\u4e00\u5957\u6a21\u7248\u5316\u7684\u8c03\u7528\u65b9\u6cd5\u3002\u4f46\u662f\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u7531\u4e8e\u5bf9\u670d\u52a1\u4f9d\u8d56\u7684\u8c03\u7528\u53ef\u80fd\u4e0d\u6b62\u4e00\u5904\uff0c\u5f80\u5f80\u4e00\u4e2a\u63a5\u53e3\u4f1a\u88ab\u591a\u5904\u8c03\u7528\uff0c\u6240\u4ee5\u901a\u5e38\u90fd\u4f1a\u9488\u5bf9\u6bcf\u4e2a\u5fae\u670d\u52a1\u81ea\u884c\u5c01\u88c5\u4e00\u4e9b\u5ba2\u6237\u7aef\u7c7b\u6765\u5305\u88c5\u8fd9\u4e9b\u4f9d\u8d56\u670d\u52a1\u7684\u8c03\u7528\u3002\u6240\u4ee5\uff0cFeign\u5728\u6b64\u57fa\u7840\u4e0a\u505a\u4e86\u8fdb\u4e00\u6b65\u5c01\u88c5\uff0c\u7531\u4ed6\u6765\u5e2e\u52a9\u6211\u4eec\u5b9a\u4e49\u548c\u5b9e\u73b0\u4f9d\u8d56\u670d\u52a1\u63a5\u53e3\u7684\u5b9a\u4e49\u3002\u5728Feign\u7684\u5b9e\u73b0\u4e0b\uff0c\u6211\u4eec\u53ea\u9700\u521b\u5efa\u4e00\u4e2a\u63a5\u53e3\u5e76\u4f7f\u7528\u6ce8\u89e3\u7684\u65b9\u5f0f\u6765\u914d\u7f6e\u5b83(\u4ee5\u524d\u662fDao\u63a5\u53e3\u4e0a\u9762\u6807\u6ce8Mapper\u6ce8\u89e3,\u73b0\u5728\u662f\u4e00\u4e2a\u5fae\u670d\u52a1\u63a5\u53e3\u4e0a\u9762\u6807\u6ce8\u4e00\u4e2aFeign\u6ce8\u89e3\u5373\u53ef)\uff0c\u5373\u53ef\u5b8c\u6210\u5bf9\u670d\u52a1\u63d0\u4f9b\u65b9\u7684\u63a5\u53e3\u7ed1\u5b9a\uff0c\u7b80\u5316\u4e86\u4f7f\u7528Spring cloud Ribbon\u65f6\uff0c\u81ea\u52a8\u5c01\u88c5\u670d\u52a1\u8c03\u7528\u5ba2\u6237\u7aef\u7684\u5f00\u53d1\u91cf\u3002<\/p>\n<p>Feign\u96c6\u6210\u4e86Ribbon<br \/>\n\u5229\u7528Ribbon\u7ef4\u62a4\u4e86MicroServiceCloud-Dept\u7684\u670d\u52a1\u5217\u8868\u4fe1\u606f\uff0c\u5e76\u4e14\u901a\u8fc7\u8f6e\u8be2\u5b9e\u73b0\u4e86\u5ba2\u6237\u7aef\u7684\u8d1f\u8f7d\u5747\u8861\u3002\u800c\u4e0eRibbon\u4e0d\u540c\u7684\u662f\uff0c\u901a\u8fc7feign\u53ea\u9700\u8981\u5b9a\u4e49\u670d\u52a1\u7ed1\u5b9a\u63a5\u53e3\u4e14\u4ee5\u58f0\u660e\u5f0f\u7684\u65b9\u6cd5\uff0c\u4f18\u96c5\u800c\u7b80\u5355\u7684\u5b9e\u73b0\u4e86\u670d\u52a1\u8c03\u7528<\/p>\n<h2>Feign\u4f7f\u7528\u6b65\u9aa4<\/h2>\n<h3>\u53c2\u8003microservicecloud-consumer-dept-80<\/h3>\n<h3>\u65b0\u5efamicroservicecloud-consumer-dept-feign<\/h3>\n<p>\u4fee\u6539\u4e3b\u542f\u52a8\u7c7b\u540d\u5b57\uff1aDeptConsumer80_Feign_App<\/p>\n<h3>microservicecloud-consumer-dept-feign\u5de5\u7a0bpom.xml\u4fee\u6539\uff0c\u4e3b\u8981\u6dfb\u52a0\u5bf9feign\u7684\u652f\u6301<\/h3>\n<pre><code class=\"language-xml\">&lt;dependency&gt;\n    &lt;groupId&gt;org.springframework.cloud&lt;\/groupId&gt;\n    &lt;artifactId&gt;spring-cloud-starter-feign&lt;\/artifactId&gt;\n&lt;\/dependency&gt;<\/code><\/pre>\n<h3>\u4fee\u6539microservicecloud-api\u5de5\u7a0b<\/h3>\n<p>POM<\/p>\n<pre><code class=\"language-xml\">&lt;dependency&gt;\n    &lt;groupId&gt;org.springframework.cloud&lt;\/groupId&gt;\n    &lt;artifactId&gt;spring-cloud-starter-feign&lt;\/artifactId&gt;\n&lt;\/dependency&gt;<\/code><\/pre>\n<p>\u65b0\u5efaDeptClientService\u63a5\u53e3\u5e76\u65b0\u589e\u6ce8\u89e3@FeignClient<\/p>\n<pre><code class=\"language-java\">@FeignClient(value = &quot;MICROSERVICECLOUD-DEPT&quot;)\npublic interface DeptClientService\n{\n    @RequestMapping(value = &quot;\/dept\/get\/{id}&quot;,method = RequestMethod.GET)\n    public Dept get(@PathVariable(&quot;id&quot;) long id);\n\n    @RequestMapping(value = &quot;\/dept\/list&quot;,method = RequestMethod.GET)\n    public List&lt;Dept&gt; list();\n\n    @RequestMapping(value = &quot;\/dept\/add&quot;,method = RequestMethod.POST)\n    public boolean add(Dept dept);\n}<\/code><\/pre>\n<p>mvn clean<\/p>\n<p>mvn install<\/p>\n<p>microservicecloud-consumer-dept-feign\u5de5\u7a0b\u4fee\u6539Controller\uff0c\u6dfb\u52a0\u4e0a\u4e00\u6b65\u65b0\u5efa\u7684DeptClientService\u63a5\u53e3<\/p>\n<pre><code class=\"language-java\">@RestController\npublic class DeptController_Feign\n{\n    @Autowired\n    private DeptClientService service = null;\n\n    @RequestMapping(value = &quot;\/consumer\/dept\/get\/{id}&quot;)\n    public Dept get(@PathVariable(&quot;id&quot;) Long id)\n    {\n        return this.service.get(id);\n    }\n\n    @RequestMapping(value = &quot;\/consumer\/dept\/list&quot;)\n    public List&lt;Dept&gt; list()\n    {\n        return this.service.list();\n    }\n\n    @RequestMapping(value = &quot;\/consumer\/dept\/add&quot;)\n    public Object add(Dept dept)\n    {\n        return this.service.add(dept);\n    }\n}<\/code><\/pre>\n<p>microservicecloud-consumer-dept-feign\u5de5\u7a0b\u4fee\u6539\u4e3b\u542f\u52a8\u7c7b<\/p>\n<pre><code class=\"language-java\">@SpringBootApplication\n@EnableEurekaClient\n\/\/@RibbonClient(name=&quot;MICROSERVICECLOUD-DEPT&quot;,configuration= MySelfRule.class)\n@EnableFeignClients(basePackages= {&quot;com&quot;})\n@ComponentScan(&quot;com&quot;)\npublic class DeptConsumer80_Feign_App {\n\n    public static void main(String[] args) {\n\n        SpringApplication.run(DeptConsumer80_Feign_App.class,args);\n    }\n}<\/code><\/pre>\n<p>@EnableFeignClients\u548c@FeignClient\u5bf9\u5e94\u5f00\u542f\u548c\u4f7f\u7528<\/p>\n<p>\u6d4b\u8bd5:<\/p>\n<p>\u542f\u52a83\u4e2aeureka\u96c6\u7fa4<\/p>\n<p>\u542f\u52a83\u4e2a\u90e8\u95e8\u5fae\u670d\u52a18001\/8002\/8003<\/p>\n<p>\u542f\u52a8Feign\u81ea\u5df1\u542f\u52a8<\/p>\n<p><a href=\"http:\/\/localhost\/consumer\/dept\/list\">http:\/\/localhost\/consumer\/dept\/list<\/a><\/p>\n<p>Feign\u81ea\u5e26\u8d1f\u8f7d\u5747\u8861\u914d\u7f6e\u9879<\/p>\n<p>\u5c0f\u603b\u7ed3\uff1a<\/p>\n<p>Feign\u901a\u8fc7\u63a5\u53e3\u7684\u65b9\u6cd5\u8c03\u7528Rest\u670d\u52a1\uff08\u4e4b\u524d\u662fRibbon+RestTemplate\uff09\uff0c<br \/>\n\u8be5\u8bf7\u6c42\u53d1\u9001\u7ed9Eureka\u670d\u52a1\u5668\uff08<a href=\"http:\/\/MICROSERVICECLOUD-DEPT\/dept\/list\">http:\/\/MICROSERVICECLOUD-DEPT\/dept\/list<\/a>\uff09,<br \/>\n\u901a\u8fc7Feign\u76f4\u63a5\u627e\u5230\u670d\u52a1\u63a5\u53e3\uff0c\u7531\u4e8e\u5728\u8fdb\u884c\u670d\u52a1\u8c03\u7528\u7684\u65f6\u5019\u878d\u5408\u4e86Ribbon\u6280\u672f\uff0c\u6240\u4ee5\u4e5f\u652f\u6301\u8d1f\u8f7d\u5747\u8861\u4f5c\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8ff0 Feign\uff1a \u7f8e[fe\u026an]\u82f1[fe\u026an] \u5b98\u7f51\u89e3\u91ca\uff1a http:\/\/projects.spring.i [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[126],"tags":[70],"class_list":["post-352","post","type-post","status-publish","format-standard","hentry","category-java-microservices","tag-springcloud"],"_links":{"self":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=352"}],"version-history":[{"count":1,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/352\/revisions"}],"predecessor-version":[{"id":2109,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/352\/revisions\/2109"}],"wp:attachment":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}