{"id":409,"date":"2022-04-24T22:29:57","date_gmt":"2022-04-24T14:29:57","guid":{"rendered":"https:\/\/blog.lijiajia.top\/?p=409"},"modified":"2026-06-19T21:34:05","modified_gmt":"2026-06-19T13:34:05","slug":"springcloud%e7%ac%ac%e4%ba%8c%e5%ad%a3%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%9a%e4%b8%89%e4%b8%aa%e6%b3%a8%e5%86%8c%e4%b8%ad%e5%bf%83%e5%bc%82%e5%90%8c%e7%82%b9%e4%b9%9d","status":"publish","type":"post","link":"https:\/\/blog.ttwow.top\/?p=409","title":{"rendered":"SpringCloud\u7b2c\u4e8c\u5b63\u5b66\u4e60\u7b14\u8bb0\uff1aRibbon\u8d1f\u8f7d\u5747\u8861\u670d\u52a1\u8c03\u7528(\u516b)"},"content":{"rendered":"

\u6982\u8ff0<\/h2>\n

\u662f\u4ec0\u4e48<\/h3>\n

Spring Cloud Ribbon\u662f\u57fa\u4e8eNetflix Ribbon\u5b9e\u73b0\u7684\u4e00\u5957\u5ba2\u6237\u7aef \u8d1f\u8f7d\u5747\u8861\u7684\u5de5\u5177\u3002<\/p>\n

\u7b80\u5355\u7684\u8bf4\uff0cRibbon\u662fNetflix\u53d1\u5e03\u7684\u5f00\u6e90\u9879\u76ee\uff0c\u4e3b\u8981\u529f\u80fd\u662f\u63d0\u4f9b\u5ba2\u6237\u7aef\u7684\u8f6f\u4ef6\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5\u548c\u670d\u52a1\u8c03\u7528\u3002Ribbon\u5ba2\u6237\u7aef\u7ec4\u4ef6\u63d0\u4f9b\u4e00\u7cfb\u5217\u5b8c\u5584\u7684\u914d\u7f6e\u9879\u5982\u8fde\u63a5\u8d85\u65f6\uff0c\u91cd\u8bd5\u7b49\u3002\u7b80\u5355\u7684\u8bf4\uff0c\u5c31\u662f\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u5217\u51faLoad Balancer\uff08\u7b80\u79f0LB\uff09\u540e\u9762\u6240\u6709\u7684\u673a\u5668\uff0cRibbon\u4f1a\u81ea\u52a8\u7684\u5e2e\u52a9\u4f60\u57fa\u4e8e\u67d0\u79cd\u89c4\u5219\uff08\u5982\u7b80\u5355\u8f6e\u8be2\uff0c\u968f\u673a\u8fde\u63a5\u7b49\uff09\u53bb\u8fde\u63a5\u8fd9\u4e9b\u673a\u5668\u3002\u6211\u4eec\u5f88\u5bb9\u6613\u4f7f\u7528Ribbon\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5\u3002<\/p>\n

\u5b98\u7f51\u8d44\u6599<\/h3>\n

https:\/\/github.com\/Netflix\/ribbon\/wiki\/Getting-Started<\/a><\/p>\n

Ribbon\u76ee\u524d\u4e5f\u8fdb\u5165\u7ef4\u62a4\u6a21\u5f0f<\/p>\n

Project Status: On Maintenance<\/code><\/p>\n

Recognizing these realities and deficiencies, we are placing Ribbon in maintenance mode<\/code><\/p>\n

\u672a\u6765\u66ff\u6362\u65b9\u6848<\/p>\n

SpringCloud LoadBalancer<\/p>\n

\u80fd\u5e72\u5417<\/h3>\n

LB\uff08\u8d1f\u8f7d\u5747\u8861\uff09<\/p>\n

\u200b \u96c6\u4e2d\u5f0fLB<\/p>\n

\u5373\u5728\u670d\u52a1\u7684\u6d88\u8d39\u65b9\u548c\u63d0\u4f9b\u65b9\u4e4b\u95f4\u4f7f\u7528\u72ec\u7acb\u7684LB\u8bbe\u65bd(\u53ef\u4ee5\u662f\u786c\u4ef6\uff0c\u5982F5, \u4e5f\u53ef\u4ee5\u662f\u8f6f\u4ef6\uff0c\u5982nginx), \u7531\u8be5\u8bbe\u65bd\u8d1f\u8d23\u628a\u8bbf\u95ee\u8bf7\u6c42\u901a\u8fc7\u67d0\u79cd\u7b56\u7565\u8f6c\u53d1\u81f3\u670d\u52a1\u7684\u63d0\u4f9b\u65b9\uff1b<\/p>\n

\u200b \u8fdb\u7a0b\u5185LB<\/p>\n

\u5c06LB\u903b\u8f91\u96c6\u6210\u5230\u6d88\u8d39\u65b9\uff0c\u6d88\u8d39\u65b9\u4ece\u670d\u52a1\u6ce8\u518c\u4e2d\u5fc3\u83b7\u77e5\u6709\u54ea\u4e9b\u5730\u5740\u53ef\u7528\uff0c\u7136\u540e\u81ea\u5df1\u518d\u4ece\u8fd9\u4e9b\u5730\u5740\u4e2d\u9009\u62e9\u51fa\u4e00\u4e2a\u5408\u9002\u7684\u670d\u52a1\u5668\u3002<\/p>\n

Ribbon\u5c31\u5c5e\u4e8e\u8fdb\u7a0b\u5185LB\uff0c\u5b83\u53ea\u662f\u4e00\u4e2a\u7c7b\u5e93\uff0c\u96c6\u6210\u4e8e\u6d88\u8d39\u65b9\u8fdb\u7a0b\uff0c\u6d88\u8d39\u65b9\u901a\u8fc7\u5b83\u6765\u83b7\u53d6\u5230\u670d\u52a1\u63d0\u4f9b\u65b9\u7684\u5730\u5740\u3002<\/p>\n

LB\u8d1f\u8f7d\u5747\u8861(Load Balance)\u662f\u4ec0\u4e48<\/h3>\n

\u7b80\u5355\u7684\u8bf4\u5c31\u662f\u5c06\u7528\u6237\u7684\u8bf7\u6c42\u5e73\u644a\u7684\u5206\u914d\u5230\u591a\u4e2a\u670d\u52a1\u4e0a\uff0c\u4ece\u800c\u8fbe\u5230\u7cfb\u7edf\u7684HA\uff08\u9ad8\u53ef\u7528\uff09\u3002
\n\u5e38\u89c1\u7684\u8d1f\u8f7d\u5747\u8861\u6709\u8f6f\u4ef6Nginx\uff0cLVS\uff0c\u786c\u4ef6 F5\u7b49\u3002<\/p>\n

Ribbon\u672c\u5730\u8d1f\u8f7d\u5747\u8861\u5ba2\u6237\u7aef VS Nginx\u670d\u52a1\u7aef\u8d1f\u8f7d\u5747\u8861\u533a\u522b
\nNginx\u662f\u670d\u52a1\u5668\u8d1f\u8f7d\u5747\u8861\uff0c\u5ba2\u6237\u7aef\u6240\u6709\u8bf7\u6c42\u90fd\u4f1a\u4ea4\u7ed9nginx\uff0c\u7136\u540e\u7531nginx\u5b9e\u73b0\u8f6c\u53d1\u8bf7\u6c42\u3002\u5373\u8d1f\u8f7d\u5747\u8861\u662f\u7531\u670d\u52a1\u7aef\u5b9e\u73b0\u7684\u3002<\/p>\n

Ribbon\u672c\u5730\u8d1f\u8f7d\u5747\u8861\uff0c\u5728\u8c03\u7528\u5fae\u670d\u52a1\u63a5\u53e3\u65f6\u5019\uff0c\u4f1a\u5728\u6ce8\u518c\u4e2d\u5fc3\u4e0a\u83b7\u53d6\u6ce8\u518c\u4fe1\u606f\u670d\u52a1\u5217\u8868\u4e4b\u540e\u7f13\u5b58\u5230JVM\u672c\u5730\uff0c\u4ece\u800c\u5728\u672c\u5730\u5b9e\u73b0RPC\u8fdc\u7a0b\u670d\u52a1\u8c03\u7528\u6280\u672f\u3002<\/p>\n

\u524d\u9762\u6211\u4eec\u8bb2\u89e3\u8fc7\u4e8680\u901a\u8fc7\u8f6e\u8be2\u8d1f\u8f7d\u8bbf\u95ee8001\/8002<\/p>\n

\u4e00\u53e5\u8bdd:<\/p>\n

\u8d1f\u8f7d\u5747\u8861+RestTemplate\u8c03\u7528<\/p>\n

Ribbon\u8d1f\u8f7d\u5747\u8861\u6f14\u793a<\/h2>\n

\u67b6\u6784\u8bf4\u660e<\/p>\n

\"file\"<\/div><\/p>\n

Ribbon\u5728\u5de5\u4f5c\u65f6\u5206\u6210\u4e24\u6b65
\n\u7b2c\u4e00\u6b65\u5148\u9009\u62e9 EurekaServer ,\u5b83\u4f18\u5148\u9009\u62e9\u5728\u540c\u4e00\u4e2a\u533a\u57df\u5185\u8d1f\u8f7d\u8f83\u5c11\u7684server.
\n\u7b2c\u4e8c\u6b65\u518d\u6839\u636e\u7528\u6237\u6307\u5b9a\u7684\u7b56\u7565\uff0c\u5728\u4eceserver\u53d6\u5230\u7684\u670d\u52a1\u6ce8\u518c\u5217\u8868\u4e2d\u9009\u62e9\u4e00\u4e2a\u5730\u5740\u3002
\n\u5176\u4e2dRibbon\u63d0\u4f9b\u4e86\u591a\u79cd\u7b56\u7565\uff1a\u6bd4\u5982\u8f6e\u8be2\u3001\u968f\u673a\u548c\u6839\u636e\u54cd\u5e94\u65f6\u95f4\u52a0\u6743\u3002<\/p>\n

\u603b\u7ed3\uff1aRibbon\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u8f6f\u8d1f\u8f7d\u5747\u8861\u7684\u5ba2\u6237\u7aef\u7ec4\u4ef6\uff0c
\n\u4ed6\u53ef\u4ee5\u548c\u5176\u4ed6\u6240\u9700\u8bf7\u6c42\u7684\u5ba2\u6237\u7aef\u7ed3\u5408\u4f7f\u7528\uff0c\u548ceureka\u7ed3\u5408\u53ea\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u5b9e\u4f8b\u3002<\/p>\n

POM<\/p>\n

\u4e4b\u524d\u5199\u6837\u4f8b\u65f6\u5019\u6ca1\u6709\u5f15\u5165spring-cloud-starter-ribbon\u4e5f\u53ef\u4ee5\u4f7f\u7528ribbon,<\/p>\n

<dependency>\n    <groupId>org.springframework.cloud<\/groupId>\n    <artifactId>spring-cloud-starter-netflix-ribbon<\/artifactId>\n<\/dependency><\/code><\/pre>\n
\u731c\u6d4bspring-cloud-starter-netflix-eureka-client\u81ea\u5e26\u4e86spring-cloud-starter-ribbon\u5f15\u7528\uff0c
\n\u8bc1\u660e\u5982\u4e0b\uff1a \u53ef\u4ee5\u770b\u5230spring-cloud-starter-netflix-eureka-client \u786e\u5b9e\u5f15\u5165\u4e86Ribbon<\/p>\n
\u4e8c\u8bf4RestTemplate\u7684\u4f7f\u7528<\/h2>\n
\u5b98\u7f51<\/p>\n
https:\/\/docs.spring.io\/spring-framework\/docs\/5.2.2.RELEASE\/javadoc-api\/org\/springframework\/web\/client\/RestTemplate.html<\/a><\/p>\n
getForObject\u65b9\u6cd5\/getForEntity\u65b9\u6cd5<\/p>\n
\u8fd4\u56de\u5bf9\u8c61\u4e3a\u54cd\u5e94\u4f53\u4e2d\u6570\u636e\u8f6c\u5316\u6210\u7684\u5bf9\u8c61\uff0c\u57fa\u672c\u4e0a\u53ef\u4ee5\u7406\u89e3\u4e3aJson<\/p>\n
restTemplate.getForObject(PaymentSrv_URL + "\/payment\/get\/"+id, CommonResult.class, id);<\/code><\/pre>\n
\u8fd4\u56de\u5bf9\u8c61\u4e3aResponseEntity\u5bf9\u8c61\uff0c\u5305\u542b\u4e86\u54cd\u5e94\u4e2d\u7684\u4e00\u4e9b\u91cd\u8981\u4fe1\u606f\uff0c\u6bd4\u5982\u54cd\u5e94\u5934\u3001\u54cd\u5e94\u72b6\u6001\u7801\u3001\u54cd\u5e94\u4f53\u7b49<\/p>\n
   @GetMapping("\/consumer\/payment\/getForEntity\/{id}")\n    public CommonResult getForEntity(@PathVariable Long id)\n    {\n        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PaymentSrv_URL + "\/payment\/get\/" + id, CommonResult.class);\n        if(entity.getStatusCode().is2xxSuccessful()){\n            return entity.getBody();\n        }else{\n            return new CommonResult(444,"\u64cd\u4f5c\u5931\u8d25\uff01");\n        }\n    }<\/code><\/pre>\n
postForObject\/postForEntity<\/p>\n
    @GetMapping("\/consumer\/payment\/create") \/\/\u5ba2\u6237\u7aef\u7528\u6d4f\u89c8\u5668\u662fget\u8bf7\u6c42\uff0c\u4f46\u662f\u5e95\u5c42\u5b9e\u8d28\u53d1\u9001post\u8c03\u7528\u670d\u52a1\u7aef8001\n    public CommonResult create(Payment payment)\n    {\n        return restTemplate.postForEntity(PaymentSrv_URL + "\/payment\/create",payment,CommonResult.class).getBody();\n\n\/\/        return restTemplate.postForObject(PaymentSrv_URL + "\/payment\/create",payment,CommonResult.class);\n    }<\/code><\/pre>\n
GET\u8bf7\u6c42\u65b9\u6cd5<\/p>\n
\n<T> T getForObject(String url, Class<T> responseType, Object... uriVariables);\n\n<T> T getForObject(String url, Class<T> responseType, Map<String, ?> uriVariables);\n\n<T> T getForObject(URI url, Class<T> responseType);\n\n<T> ResponseEntity<T> getForEntity(String url, Class<T> responseType, Object... uriVariables);\n\n<T> ResponseEntity<T> getForEntity(String url, Class<T> responseType, Map<String, ?> uriVariables);\n\n<T> ResponseEntity<T> getForEntity(URI var1, Class<T> responseType);\n<\/code><\/pre>\n
POST\u8bf7\u6c42\u65b9\u6cd5<\/p>\n
\n<T> T postForObject(String url, @Nullable Object request, Class<T> responseType, Object... uriVariables);\n\n<T> T postForObject(String url, @Nullable Object request, Class<T> responseType, Map<String, ?> uriVariables);\n\n<T> T postForObject(URI url, @Nullable Object request, Class<T> responseType);\n\n<T> ResponseEntity<T> postForEntity(String url, @Nullable Object request, Class<T> responseType, Object... uriVariables);\n\n<T> ResponseEntity<T> postForEntity(String url, @Nullable Object request, Class<T> responseType, Map<String, ?> uriVariables);\n\n<T> ResponseEntity<T> postForEntity(URI url, @Nullable Object request, Class<T> responseType);<\/code><\/pre>\n
Ribbon\u6838\u5fc3\u7ec4\u4ef6IRule<\/h2>\n
IRule\uff1a\u6839\u636e\u7279\u5b9a\u7b97\u6cd5\u4e2d\u4ece\u670d\u52a1\u5217\u8868\u4e2d\u9009\u53d6\u4e00\u4e2a\u8981\u8bbf\u95ee\u7684\u670d\u52a1<\/h3>\n
\"file\"<\/div><\/p>\n
com.netflix.loadbalancer.RoundRobinRule \u8f6e\u8be2<\/p>\n
com.netflix.loadbalancer.RandomRule \u968f\u673a<\/p>\n
com.netflix.loadbalancer.RetryRule  \u5148\u6309\u7167RoundRobinRule\u7684\u7b56\u7565\u83b7\u53d6\u670d\u52a1\uff0c\u5982\u679c\u83b7\u53d6\u670d\u52a1\u5931\u8d25\u5219\u5728\u6307\u5b9a\u65f6\u95f4\u5185\u4f1a\u8fdb\u884c\u91cd\u8bd5\uff0c\u83b7\u53d6\u53ef\u7528\u7684\u670d\u52a1<\/p>\n
WeightedResponseTimeRule \u5bf9RoundRobinRule\u7684\u6269\u5c55\uff0c\u54cd\u5e94\u901f\u5ea6\u8d8a\u5feb\u7684\u5b9e\u4f8b\u9009\u62e9\u6743\u91cd\u8d8a\u5927\uff0c\u8d8a\u5bb9\u6613\u88ab\u9009\u62e9<\/p>\n
BestAvailableRule \u4f1a\u5148\u8fc7\u6ee4\u6389\u7531\u4e8e\u591a\u6b21\u8bbf\u95ee\u6545\u969c\u800c\u5904\u4e8e\u65ad\u8def\u5668\u8df3\u95f8\u72b6\u6001\u7684\u670d\u52a1\uff0c\u7136\u540e\u9009\u62e9\u4e00\u4e2a\u5e76\u53d1\u91cf\u6700\u5c0f\u7684\u670d\u52a1<\/p>\n
AvailabilityFilteringRule \u5148\u8fc7\u6ee4\u6389\u6545\u969c\u5b9e\u4f8b\uff0c\u518d\u9009\u62e9\u5e76\u53d1\u8f83\u5c0f\u7684\u5b9e\u4f8b<\/p>\n
ZoneAvoidanceRule \u9ed8\u8ba4\u89c4\u5219,\u590d\u5408\u5224\u65adserver\u6240\u5728\u533a\u57df\u7684\u6027\u80fd\u548cserver\u7684\u53ef\u7528\u6027\u9009\u62e9\u670d\u52a1\u5668<\/p>\n
\u5982\u4f55\u66ff\u6362<\/h3>\n
\u4fee\u6539cloud-consumer-order80<\/p>\n
\u6ce8\u610f\u914d\u7f6e\u7ec6\u8282:<\/p>\n
\u5b98\u65b9\u6587\u6863\u660e\u786e\u7ed9\u51fa\u4e86\u8b66\u544a\uff1a
\n\u8fd9\u4e2a\u81ea\u5b9a\u4e49\u914d\u7f6e\u7c7b\u4e0d\u80fd\u653e\u5728@ComponentScan\u6240\u626b\u63cf\u7684\u5f53\u524d\u5305\u4e0b\u4ee5\u53ca\u5b50\u5305\u4e0b\uff0c
\n\u5426\u5219\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u8fd9\u4e2a\u914d\u7f6e\u7c7b\u5c31\u4f1a\u88ab\u6240\u6709\u7684Ribbon\u5ba2\u6237\u7aef\u6240\u5171\u4eab\uff0c\u8fbe\u4e0d\u5230\u7279\u6b8a\u5316\u5b9a\u5236\u7684\u76ee\u7684\u4e86\u3002<\/p>\n
\u65b0\u5efapackage <\/p>\n
com.myrule<\/code><\/p>\n
\u4e0a\u9762\u5305\u4e0b\u65b0\u5efaMySelfRule\u89c4\u5219\u7c7b<\/p>\n
@Configuration\npublic class MySelfRule\n{\n    @Bean\n    public IRule myRule()\n    {\n        return new RandomRule();\/\/\u5b9a\u4e49\u4e3a\u968f\u673a\n    }\n}<\/code><\/pre>\n
\u4e3b\u542f\u52a8\u7c7b\u6dfb\u52a0@RibbonClient<\/p>\n
@SpringBootApplication\n@EnableEurekaClient\n@RibbonClient(name = "CLOUD-PAYMENT-SERVICE",configuration=MySelfRule.class)\npublic class OrderMain80\n{\n    public static void main(String[] args)\n    {\n        SpringApplication.run(OrderMain80.class,args);\n    }\n}<\/code><\/pre>\n
\u6d4b\u8bd5<\/p>\n
\u542f\u52a8eureka\u96c6\u7fa47001 7002<\/p>\n
\u670d\u52a1\u63d0\u4f9b\u8005 8001 8002<\/p>\n
\u6d88\u8d39\u8005 80<\/p>\n
\u5982\u679ceureka\u5355\u673a \u5219\u4e0d\u751f\u6548<\/del>\u91cd\u65b0\u6d4b\u8bd5\u4e0d\u5f00\u96c6\u7fa4\u4e5f\u53ef\u4ee5\uff0c\u5e94\u8be5\u662f\u4e4b\u524d\u914d\u7f6e\u6709\u95ee\u9898<\/p>\n
http:\/\/localhost\/consumer\/payment\/get\/1<\/a><\/p>\n
\u751f\u6548\u4e86\uff0c\u968f\u673a\u8c03\u75288001 8002\uff0c<\/p>\n
Ribbon\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5<\/h2>\n
\u539f\u7406<\/p>\n
\n\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5\uff1arest\u63a5\u53e3\u7b2c\u51e0\u6b21\u8bf7\u6c42\u6570 % \u670d\u52a1\u5668\u96c6\u7fa4\u603b\u6570\u91cf = \u5b9e\u9645\u8c03\u7528\u670d\u52a1\u5668\u4f4d\u7f6e\u4e0b\u6807  \uff0c\u6bcf\u6b21\u670d\u52a1\u91cd\u542f\u52a8\u540erest\u63a5\u53e3\u8ba1\u6570\u4ece1\u5f00\u59cb\u3002\n\nList<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");\n\n\u5982\uff1a   List [0] instances = 127.0.0.1:8002\n\u3000\u3000\u3000List [1] instances = 127.0.0.1:8001\n\n8001+ 8002 \u7ec4\u5408\u6210\u4e3a\u96c6\u7fa4\uff0c\u5b83\u4eec\u5171\u8ba12\u53f0\u673a\u5668\uff0c\u96c6\u7fa4\u603b\u6570\u4e3a2\uff0c \u6309\u7167\u8f6e\u8be2\u7b97\u6cd5\u539f\u7406\uff1a\n\n\u5f53\u603b\u8bf7\u6c42\u6570\u4e3a1\u65f6\uff1a 1 % 2 =1 \u5bf9\u5e94\u4e0b\u6807\u4f4d\u7f6e\u4e3a1 \uff0c\u5219\u83b7\u5f97\u670d\u52a1\u5730\u5740\u4e3a127.0.0.1:8001\n\u5f53\u603b\u8bf7\u6c42\u6570\u4f4d2\u65f6\uff1a 2 % 2 =0 \u5bf9\u5e94\u4e0b\u6807\u4f4d\u7f6e\u4e3a0 \uff0c\u5219\u83b7\u5f97\u670d\u52a1\u5730\u5740\u4e3a127.0.0.1:8002\n\u5f53\u603b\u8bf7\u6c42\u6570\u4f4d3\u65f6\uff1a 3 % 2 =1 \u5bf9\u5e94\u4e0b\u6807\u4f4d\u7f6e\u4e3a1 \uff0c\u5219\u83b7\u5f97\u670d\u52a1\u5730\u5740\u4e3a127.0.0.1:8001\n\u5f53\u603b\u8bf7\u6c42\u6570\u4f4d4\u65f6\uff1a 4 % 2 =0 \u5bf9\u5e94\u4e0b\u6807\u4f4d\u7f6e\u4e3a0 \uff0c\u5219\u83b7\u5f97\u670d\u52a1\u5730\u5740\u4e3a127.0.0.1:8002\n\u5982\u6b64\u7c7b\u63a8......<\/code><\/pre>\n
RoundRobinRule\u6e90\u7801<\/p>\n
\u81ea\u5df1\u8bd5\u7740\u5199\u4e00\u4e2a\u672c\u5730\u8d1f\u8f7d\u5747\u8861\u5668\u8bd5\u8bd5<\/p>\n
7001\/7002\u96c6\u7fa4\u542f\u52a8<\/h3>\n
8001\/8002\u5fae\u670d\u52a1\u6539\u9020<\/h3>\n
controller<\/p>\n
@GetMapping(value = "\/payment\/lb")\npublic String getPaymentLB()\n{\n    return serverPort;\n}<\/code><\/pre>\n
80\u8ba2\u5355\u5fae\u670d\u52a1\u6539\u9020<\/h3>\n
ApplicationContextBean\u53bb\u6389\u6ce8\u89e3@LoadBalanced<\/p>\n
@Bean\n\/\/@LoadBalanced\npublic RestTemplate getRestTemplate()\n{\n    return new RestTemplate();\n}<\/code><\/pre>\n
LoadBalancer\u63a5\u53e3<\/p>\n
public interface LoadBalancer\n{\n    ServiceInstance instances(List<ServiceInstance> serviceInstances);\n}<\/code><\/pre>\n
MyLB<\/p>\n
@Component\npublic class MyLB implements LoadBalancer\n{\n    private AtomicInteger atomicInteger = new AtomicInteger(0);\n\n    public final int getAndIncrement()\n    {\n        int current;\n        int next;\n        do\n        {\n            current = this.atomicInteger.get();\n            next = current >= 2147483647 ? 0 : current + 1;\n        } while(!this.atomicInteger.compareAndSet(current, next));\n        System.out.println("*****next: "+next);\n        return next;\n    }\n\n    @Override\n    public ServiceInstance instances(List<ServiceInstance> serviceInstances)\n    {\n        int index = getAndIncrement() % serviceInstances.size();\n        return serviceInstances.get(index);\n    }\n}<\/code><\/pre>\n
OrderController<\/p>\n
@Resource\nprivate DiscoveryClient discoveryClient;\n@Resource\nprivate LoadBalancer loadBalancer;\n\n@GetMapping("\/consumer\/payment\/lb")\npublic String getPaymentLB()\n{\n    List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");\n\n    if(instances == null || instances.size()<=0) {\n        return null;\n    }\n    ServiceInstance serviceInstance = loadBalancer.instances(instances);\n    URI uri = serviceInstance.getUri();\n\n    return restTemplate.getForObject(uri+"\/payment\/lb",String.class);\n}<\/code><\/pre>\n
\u6d4b\u8bd5<\/p>\n
http:\/\/localhost\/consumer\/payment\/lb<\/a><\/p>\n
8001 8002\u4ea4\u66ff\u51fa\u73b0\uff0c\u8f6e\u8be2\u7b97\u6cd5\u6210\u529f<\/p>\n
\u6ce8\u610f @LoadBalanced \u6ce8\u89e3\u4e0d\u53bb\u9664\u4f1a\u62a5\u9519<\/p>\n
No instances available for 172.28.105.245<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6982\u8ff0 \u662f\u4ec0\u4e48 Spring Cloud Ribbon\u662f\u57fa\u4e8eNetflix Ribbon\u5b9e\u73b0\u7684\u4e00\u5957\u5ba2\u6237\u7aef \u8d1f\u8f7d\u5747 […]<\/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-409","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\/409","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=409"}],"version-history":[{"count":1,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/409\/revisions"}],"predecessor-version":[{"id":2122,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/409\/revisions\/2122"}],"wp:attachment":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=409"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=409"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}