我在 Spring Boot 应用程序中使用 eureka 进行服务发现，使用功能区进行负载平衡。当我在修复端口上运行在 eureka 注册的微服务时，它工作正常，但是当我在随机端口上运行它们时，尽管我可以看到在 eureka 仪表板上注册的服务，但它无法找到端口号。当我尝试访问该服务时，出现以下错误。
2018-11-27 07:55:15.853 INFO 7240 --- [nio-8079-exec-1] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client MYAPP initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:name=MYAPP,current list of Servers=[nawnit:0, nawnit:0],Load balancer stats=Zone stats: {defaultzone=[Zone:defaultzone; Instance count:2; Active connections count: 0; Circuit breaker tripped count: 0; Active connections per server: 0.0;]
},Server stats: [[Server:nawnit:0; Zone:defaultZone; Total Requests:0; Successive connection failure:0; Total blackout seconds:0; Last connection made:Thu Jan 01 05:30:00 IST 1970; First connection made: Thu Jan 01 05:30:00 IST 1970; Active Connections:0; total failure count in last (1000) msecs:0; average resp time:0.0; 90 percentile resp time:0.0; 95 percentile resp time:0.0; min resp time:0.0; max resp time:0.0; stddev resp time:0.0]
]}ServerList:org.springframework.cloud.netflix.ribbon.eureka.DomainExtractingServerList@563d5f30
2018-11-27 07:55:15.907 ERROR 7240 --- [nio-8079-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://MYAPP/validation/1": connect: Address is invalid on local machine, or port is not valid on remote machine; nested exception is java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote machine] with root cause
java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote machine
at java.net.DualStackPlainSocketImpl.connect0(Native Method) ~[na:1.8.0_181]
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_181]
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_181]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_181]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_181]
at java.net.Socket.connect(Socket.java:538) ~[na:1.8.0_181]
at sun.net.NetworkClient.doConnect(NetworkClient.java:180) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.<init>(HttpClient.java:242) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.New(HttpClient.java:339) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.New(HttpClient.java:357) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984) ~[na:1.8.0_181]
at org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal(SimpleBufferingClientHttpRequest.java:76) ~[spring-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at org.spr
这是我的控制器类，我从中调用另一个服务。
public ResponseEntity<BaseResponse> verifyEmail(@RequestBody CustomerIdentity identity,
@PathVariable Integer simID) throws HttpClientErrorException {
System.out.println(this.discoveryClient.getInstances("MYAPP").get(0).getUri().toString());
return restTemplate.postForEntity("http://MYAPP"+ "/validation/" + simID, identity, BaseResponse.class);
}
这是我添加的属性
eureka.client.service-url.defaultZone=http://localhost:8761/eureka
我的服务已使用名称在尤里卡注册MYAPP.我也尝试过打印网址，如您所见，它给出了http://nawnit:8080当在固定端口上运行但在随机端口上运行时我得到http://nawnit:0 （nawnit 是我的电脑名）
这是我的尤里卡服务器的配置属性。
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
logging.level.com.netflix.eureka=OFF
logging.level.com.netflix.discovery=OFF
eureka客户端的pom.xml：
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.M3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-ribbon</artifactId>
<version>1.4.6.RELEASE</version>
</dependency>
注意：我正在使用的restTemplate 配置为负载平衡。
