**转发错误：**
当我通过angularjs + Zuul + hystrix调用我的POST微服务时，它显示转发异常。但是，如果我通过客户端 REST API 或 POSTMAN 进行调用，它会提供成功消息作为200 OK状态。
2017-04-24 19：09：50.315 警告 6196 --- [NIO-9090-exec-6] o.s.c.n.z.filters.post.SendErrorFilter ： 过滤期间出错
com.netflix.zuul.exception.ZuulException： 转发错误 at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.handleException(RibbonRoutingFilter.java：157) ~[spring-cloud-netflix-core-1.1.0.RELEASE.jar：1.1.0.RELEASE] at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.forward(RibbonRoutingFilter.java：132) ~[spring-cloud-netflix-core-1.1.0.RELEASE.jar：1.1.0.RELEASE] at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.run(RibbonRoutingFilter.java：78) ~[spring-cloud-netflix-core-1.1.0.RELEASE.jar：1.1.0.RELEASE] at com.netflix.zuul.ZuulFilter.runFilter(ZuulFilter.java：112) ~[zuul-core-1.1.0.jar：1.1.0] at com.netflix.zuul.FilterProcessor.processZuulFilter(FilterProcessor.java：197) ~[zuul-core-1.1.0.jar：1.1.0] at com.netflix.zuul.FilterProcessor.runFilters(FilterProcessor.java：161) ~[zuul-core-1.1.0.jar：1.1.0] at com.netflix.zuul.FilterProcessor.route(FilterProcessor.java：120) ~[zuul-core-1.1.0.jar：1.1.0] at com.netflix.zuul.ZuulRunner.route(ZuulRunner.java：96) ~[zuul-core-1.1.0.jar：1.1.0] at com.netflix.zuul.http.ZuulServlet.route(ZuulServlet.java：116) ~[zuul-core-1.1.0.jar：1.1.0] at com.netflix.zuul.http.ZuulServlet.service(ZuulServlet.java：81) ~[zuul-core-1.1.0.jar：1.1.0] at org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java：158) [spring-webmvc-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.cloud.netflix.zuul.web.ZuulController.handleRequestInternal(ZuulController.java：43) [spring-cloud-netflix-core-1.1.0.RELEASE.jar：1.1.0.RELEASE] at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java：147) [spring-webmvc-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java：50) [spring-webmvc-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java：961) [spring-webmvc-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java：895) [spring-webmvc-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java：967) [spring-webmvc-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java：869) [spring-webmvc-4.2.6.RELEASE.jar：4.2.6.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java：648) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java：843) [spring-webmvc-4.2.6.RELEASE.jar：4.2.6.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java：729) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：292) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java：52) [tomcat-embed-websocket-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java：261) [spring-boot-actuator-1.3.5.RELEASE.jar：1.3.5.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java：107) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java：92) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java：107) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE]at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java：115) [spring-boot-actuator-1.3.5.RELEASE.jar：1.3.5.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java：107) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java：99) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java：107) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java：87) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java：107) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java：77) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java：107) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java：121) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java：107) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java：103) [spring-boot-actuator-1.3.5.RELEASE.jar：1.3.5.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java：107) [spring-web-4.2.6.RELEASE.jar：4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java：240) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java：207) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java：212) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java：106) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java：502) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java：141) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java：79) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java：88) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java：522) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java：1095) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java：672) [tomcat-embed-core-8.0.33.jar：8.0.33] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java：1502) [tomcat-embed-core-8.0.33.jar：8.0.33]at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java：1458) [tomcat-embed-core-8.0.33.jar：8.0.33] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java：1142) [na：1.8.0_91] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java：617) [na：1.8.0_91] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java：61) [tomcat-embed-core-8.0.33.jar：8.0.33] at java.lang.Thread.run(Thread.java：745) [na：1.8.0_91] 原因：com.netflix.hystrix.exception.HystrixRuntimeException：crudoperations超时，没有可用的回退。 at com.netflix.hystrix.AbstractCommand$16.call(AbstractCommand.java：805) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.AbstractCommand$16.call(AbstractCommand.java：789) ~[hystrix-core-1.5.2.jar：1.5.2] at rx.internal.operator.OperatorOnErrorResumeNextViaFunction$4.onError(OperatorOnErrorResumeNextViaFunction.java：139) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OperatorDoOnEach$1.onError(OperatorDoOnEach.java：71) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OperatorDoOnEach$1.onError(OperatorDoOnEach.java：71) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OperatorDoOnEach$1.onError(OperatorDoOnEach.java：71) ~[rxjava-1.1.5.jar：1.1.5] at com.netflix.hystrix.AbstractCommand$DeprecatedOnFallbackHookApplication$1.onError(AbstractCommand.java：1494) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.AbstractCommand$FallbackHookApplication$1.onError(AbstractCommand.java：1384) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java：313) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java：305) ~[hystrix-core-1.5.2.jar：1.5.2] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：50) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OnSubscribeLift.call(OnSubscribeLift.java：30) ~[rxjava-1.1.5.jar：1.1.5] 在RX。Observable.unsafeSubscribe(Observable.java：8460) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OperatorOnErrorResumeNextViaFunction$4.onError(OperatorOnErrorResumeNextViaFunction.java：141) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OperatorDoOnEach$1.onError(OperatorDoOnEach.java：71) ~[rxjava-1.1.5.jar：1.1.5] at rx.internal.operator.OperatorDoOnEach$1.onError(OperatorDoOnEach.java：71) ~[rxjava-1.1.5.jar：1.1.5] at com.netflix.hystrix.AbstractCommand$HystrixObservableTimeoutOperator$1.run(AbstractCommand.java：953) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.strategy.concurrency.HystrixContextRunnable$1.call(HystrixContextRunnable.java：41) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.strategy.concurrency.HystrixContextRunnable$1.call(HystrixContextRunnable.java：37) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.strategy.concurrency.HystrixContextRunnable.run(HystrixContextRunnable.java：57) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.AbstractCommand$HystrixObservableTimeoutOperator$2.tick(AbstractCommand.java：970) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.util.HystrixTimer$1.run(HystrixTimer.java：99) ~[hystrix-core-1.5.2.jar：1.5.2]at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java：511) ~[na：1.8.0_91] at java.util.concurrent.FutureTask.runAndReset(FutureTask.java：308) ~[na：1.8.0_91] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java：180) ~[na：1.8.0_91] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java：294) ~[na：1.8.0_91] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java：1142) [na：1.8.0_91] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java：617) [na：1.8.0_91] ...省略 1 个常见帧 由以下原因引起：java.util.concurrent.TimeoutException： null at com.netflix.hystrix.AbstractCommand$9.call(AbstractCommand.java：600) ~[hystrix-core-1.5.2.jar：1.5.2] at com.netflix.hystrix.AbstractCommand$9.call(AbstractCommand.java：580) ~[hystrix-core-1.5.2.jar：1.5.2] at rx.internal.operator.OperatorOnErrorResumeNextViaFunction$4.onError(OperatorOnErrorResumeNextViaFunction.java：139) ~[rxjava-1.1.5.jar：1.1.5] ...省略 15 个常见帧
我记得，默认的hystrix命令超时是1000ms，这对于REST API来说非常短，尤其是在测试时。在您的应用程序 YML 中尝试此配置：
hystrix:
command:
default:
execution:
isolation:
strategy: THREAD
thread:
timeoutInMilliseconds: 60000
我遇到了同样的问题，我已经通过在微服务配置中使用首选 id 地址来解决。
PS：Zuul无法解析操作系统生成的DNS。
eureka:
instance:
prefer-ip-address: true
将默认值更改为已注册的应用名称
我认为您必须启用CrossOrigin.
您可以将其用作注释，如下所示：
@CrossOrigin("*")
public class YourApplicationName{
....
}
或者使用如下所示的 bean 定义：
@Bean
public CorsFilter corsFilter() {
final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
final CorsConfiguration config = new CorsConfiguration();
config.setAllowCredentials(true);
config.setAllowedOrigins(Collections.singletonList("*"));
config.setAllowedHeaders(Collections.singletonList("*"));
config.setAllowedMethods(Collections.singletonList("*"));
source.registerCorsConfiguration("/**", config);
return new CorsFilter(source);
}