feign接口调用失败怎么排查（Feign远程调用接口报错）

采用Feign远程调用接口，报错Invalid mime type "{Content-Type}": does not contain '/'，我来为大家讲解一下关于feign接口调用失败怎么排查?跟着小编一起来看一看吧!

feign接口调用失败怎么排查

采用Feign远程调用接口，报错Invalid mime type "{Content-Type}": does not contain '/'

具体的错误日志如下：有些地方脱敏处理了下

com.netflix.hystrix.exception.HystrixRuntimeException: TaskInfoapi#updateTaskInfo(TaskInfo,String,String,Long,String,String) failed and no fallback available. at com.netflix.hystrix.AbstractCommand$22.call(AbstractCommand.java:822) at com.netflix.hystrix.AbstractCommand$22.call(AbstractCommand.java:807) at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$4.onError(OperatorOnErrorResumeNextViaFunction.java:140) at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87) at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87) at com.netflix.hystrix.AbstractCommand$DeprecatedOnFallbackHookApplication$1.onError(AbstractCommand.java:1472) at com.netflix.hystrix.AbstractCommand$FallbackHookApplication$1.onError(AbstractCommand.java:1397) at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87) at rx.observers.Subscribers$5.onError(Subscribers.java:230) at rx.internal.operators.OnSubscribeThrow.call(OnSubscribeThrow.java:44) at rx.internal.operators.OnSubscribeThrow.call(OnSubscribeThrow.java:28) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51) at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$4.onError(OperatorOnErrorResumeNextViaFunction.java:142) at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87) at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87) at com.netflix.hystrix.AbstractCommand$HystrixObservableTimeoutOperator$3.onError(AbstractCommand.java:1194) at rx.internal.operators.OperatorSubscribeOn$SubscribeOnSubscriber.onError(OperatorSubscribeOn.java:80) at rx.observers.Subscribers$5.onError(Subscribers.java:230) at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87) at rx.observers.Subscribers$5.onError(Subscribers.java:230) at com.netflix.hystrix.AbstractCommand$DeprecatedOnRunHookApplication$1.onError(AbstractCommand.java:1431) at com.netflix.hystrix.AbstractCommand$ExecutionHookApplication$1.onError(AbstractCommand.java:1362) at rx.observers.Subscribers$5.onError(Subscribers.java:230) at rx.observers.Subscribers$5.onError(Subscribers.java:230) at rx.internal.operators.OnSubscribeThrow.call(OnSubscribeThrow.java:44) at rx.internal.operators.OnSubscribeThrow.call(OnSubscribeThrow.java:28) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51) at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51) at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41) at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) at rx.Observable.unsafeSubscribe(Observable.java:10327) at rx.internal.operators.OperatorSubscribeOn$SubscribeOnSubscriber.call(OperatorSubscribeOn.java:100) at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction$1.call(HystrixContexSchedulerAction.java:56) at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction$1.call(HystrixContexSchedulerAction.java:47) at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction.call(HystrixContexSchedulerAction.java:69) at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) at java.util.concurrent.FutureTask.run(FutureTask.java) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: feign.codec.EncodeException: Invalid mime type "{Content-Type}": does not contain '/' at feign.ReflectiveFeign$BuildEncodedTemplateFromArgs.resolve(ReflectiveFeign.java:376) at feign.ReflectiveFeign$BuildTemplateByResolvingArgs.create(ReflectiveFeign.java:224) at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:74) at feign.hystrix.HystrixInvocationHandler$1.run(HystrixInvocationHandler.java:109) at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:302) at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:298) at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:46) ... 27 common frames omitted Caused by: org.springframework.http.InvalidMediaTypeException: Invalid mime type "{Content-Type}": does not contain '/' at org.springframework.http.MediaType.parseMediaType(MediaType.java:535) at org.springframework.http.MediaType.valueOf(MediaType.java:520) at org.springframework.cloud.openfeign.support.SpringEncoder.encode(SpringEncoder.java:76) at feign.ReflectiveFeign$BuildEncodedTemplateFromArgs.resolve(ReflectiveFeign.java:372) ... 33 common frames omitted Caused by: org.springframework.util.InvalidMimeTypeException: Invalid mime type "{Content-Type}": does not contain '/' at org.springframework.util.MimeTypeUtils.parseMimeType(MimeTypeUtils.java:198) at org.springframework.http.MediaType.parseMediaType(MediaType.java:532) ... 36 common frames omitted

由于采用的是openFeign进行处理远程调用接口，feign的配置如下：

@Api(tags = {"升级任务同步接口"}) @Component @FeignClient(url = "${emall.url}", name = "emall_api") public interface TaskInfoApi { /** * feign调用的接口 * * @param TaskInfo * @param requestId:ID消息流水号，32位UUID字符串，防重放 * @param timeStamp:请求发起时间戳，请求发起时间到受理时间不超过30s，时间差超过30s请求自动失效 * @return */ @PostMapping(value = "/api/task/add") public String updateTaskInfo(@RequestBody TaskInfo TaskInfo, @Requestheader(value = "requestId") String requestId, @RequestHeader(value = "timeStamp") Long timeStamp, @RequestHeader(value = "Content-Type") String contentType); }

问题就出在 @RequestHeader(value = "Content-Type") String contentType 向header设置属性。

由于需要向请求头中设置Content-Type为application/json，但是使用注解一直不行。

需要修改为如下：

@Api(tags = {"升级任务同步接口"}) @Component @FeignClient(url = "${emall.url}", name = "emall_api") public interface TaskInfoApi { /** * feign调用的接口 * * @param TaskInfo * @param requestId:ID消息流水号，32位UUID字符串，防重放 * @param timeStamp:请求发起时间戳，请求发起时间到受理时间不超过30s，时间差超过30s请求自动失效 * @return */ @RequestMapping(value = "/api/task/add", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE) public String updateTaskInfo(@RequestBody TaskInfo TaskInfo, @RequestHeader(value = "requestId") String requestId, @RequestHeader(value = "timeStamp") Long timeStamp); }

即：删除掉注解向header设置Content-Type 将PostMapping改为

@RequestMapping(value = "/api/task/add", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)

则可以正常请求返回：

返回结果集:{"resultCode":00,"messageCode":"200","message":"任务更新成功","data":null}