spring .cloud ------------java.lang.RuntimeException: com.netflix.client.ClientException，Caused by: java.lang.IllegalArgumentException: MIME type may not contain reserved characters

1.问题的发生

Feign在默认情况下使用的是JDK原生的URLConnection发送HTTP请求，没有连接池，但是对每个地址会保持一个长连接，即利用HTTP的persistence connection 。我们可以用Apache的HTTP Client替换Feign原始的http client, 从而获取连接池、超时时间等与性能息息相关的控制能力。Spring Cloud从Brixtion.SR5版本开始支持这种替换，首先在项目中声明Apache HTTP Client和feign-httpclient依赖：

<!-- 使用Apache HttpClient替换Feign原生httpclient -->

    <dependency>

            <groupId>org.apache.httpcomponents</groupId>

            <artifactId>httpclient</artifactId>

        </dependency>

        <dependency>

            <groupId>com.netflix.feign</groupId>

            <artifactId>feign-httpclient</artifactId>

            <version>8.17.0</version>

        </dependency>

然后在application.yml中添加如下：

feign:

  httpclient:

    enabled: true

接下来服务调用时异常

java.lang.RuntimeException: com.netflix.client.ClientException

    at org.springframework.cloud.openfeign.ribbon.LoadBalancerFeignClient.execute(LoadBalancerFeignClient.java:71) ~[spring-cloud-openfeign-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at org.springframework.cloud.sleuth.instrument.web.client.feign.TraceLoadBalancerFeignClient.execute(TraceLoadBalancerFeignClient.java:67) ~[spring-cloud-sleuth-core-2.0.1.RELEASE.jar!/:2.0.

1.RELEASE]

    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:97) ~[feign-core-9.5.1.jar!/:na]

    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:76) ~[feign-core-9.5.1.jar!/:na]

    at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:103) ~[feign-core-9.5.1.jar!/:na]

    at com.sun.proxy.$Proxy177.getByName(Unknown Source) ~[na:na]

    at com.zzgele.qmkx.task.job.InfomationRssJob.getInfoRssJob(InfomationRssJob.java:82) ~[classes!/:0.0.1-SNAPSHOT]

    at com.zzgele.qmkx.task.schedule.InfomationScheduledTask.getInfomation(InfomationScheduledTask.java:38) ~[classes!/:0.0.1-SNAPSHOT]

    at com.zzgele.qmkx.task.schedule.InfomationScheduledTask$$FastClassBySpringCGLIB$$c87066d3.invoke(<generated>) ~[classes!/:0.0.1-SNAPSHOT]

    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:746) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:88) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.cloud.sleuth.instrument.async.TraceAsyncAspect.traceBackgroundThread(TraceAsyncAspect.java:65) ~[spring-cloud-sleuth-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at sun.reflect.GeneratedMethodAccessor141.invoke(Unknown Source) ~[na:na]

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_172]

    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_172]

    at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:644) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:633) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:88) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.cloud.sleuth.instrument.scheduling.TraceSchedulingAspect.traceBackgroundThread(TraceSchedulingAspect.java:68) ~[spring-cloud-sleuth-core-2.0.1.RELEASE.jar!/:2.0.1.RELE

ASE]

    at sun.reflect.GeneratedMethodAccessor140.invoke(Unknown Source) ~[na:na]

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_172]

    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_172]

    at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:644) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:633) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at org.springframework.aop.interceptor.AsyncExecutionInterceptor.lambda$invoke$0(AsyncExecutionInterceptor.java:115) ~[spring-aop-5.0.7.RELEASE.jar!/:5.0.7.RELEASE]

    at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_172]

    at org.springframework.cloud.sleuth.instrument.async.TraceRunnable.run(TraceRunnable.java:62) ~[spring-cloud-sleuth-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_172]

Caused by: com.netflix.client.ClientException: null

    at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:118) ~[ribbon-loadbalancer-2.2.5.jar!/:2.2.5]

    at org.springframework.cloud.openfeign.ribbon.LoadBalancerFeignClient.execute(LoadBalancerFeignClient.java:63) ~[spring-cloud-openfeign-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    ... 35 common frames omitted

Caused by: java.lang.IllegalArgumentException: MIME type may not contain reserved characters

    at org.apache.http.util.Args.check(Args.java:36) ~[httpcore-4.4.9.jar!/:4.4.9]

    at org.apache.http.entity.ContentType.create(ContentType.java:227) ~[httpcore-4.4.9.jar!/:4.4.9]

    at feign.httpclient.ApacheHttpClient.getContentType(ApacheHttpClient.java:159) ~[feign-httpclient-8.17.0.jar!/:8.17.0]

    at feign.httpclient.ApacheHttpClient.toHttpUriRequest(ApacheHttpClient.java:140) ~[feign-httpclient-8.17.0.jar!/:8.17.0]

    at feign.httpclient.ApacheHttpClient.execute(ApacheHttpClient.java:83) ~[feign-httpclient-8.17.0.jar!/:8.17.0]

    at org.springframework.cloud.sleuth.instrument.web.client.feign.TracingFeignClient.execute(TracingFeignClient.java:91) ~[spring-cloud-sleuth-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at org.springframework.cloud.sleuth.instrument.web.client.feign.LazyTracingFeignClient.execute(LazyTracingFeignClient.java:55) ~[spring-cloud-sleuth-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at org.springframework.cloud.openfeign.ribbon.RetryableFeignLoadBalancer$1.doWithRetry(RetryableFeignLoadBalancer.java:103) ~[spring-cloud-openfeign-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at org.springframework.cloud.openfeign.ribbon.RetryableFeignLoadBalancer$1.doWithRetry(RetryableFeignLoadBalancer.java:88) ~[spring-cloud-openfeign-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:287) ~[spring-retry-1.2.2.RELEASE.jar!/:na]

    at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:180) ~[spring-retry-1.2.2.RELEASE.jar!/:na]

    at org.springframework.cloud.openfeign.ribbon.RetryableFeignLoadBalancer.execute(RetryableFeignLoadBalancer.java:88) ~[spring-cloud-openfeign-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at org.springframework.cloud.openfeign.ribbon.RetryableFeignLoadBalancer.execute(RetryableFeignLoadBalancer.java:54) ~[spring-cloud-openfeign-core-2.0.1.RELEASE.jar!/:2.0.1.RELEASE]

    at com.netflix.client.AbstractLoadBalancerAwareClient$1.call(AbstractLoadBalancerAwareClient.java:104) ~[ribbon-loadbalancer-2.2.5.jar!/:2.2.5]

    at com.netflix.loadbalancer.reactive.LoadBalancerCommand$3$1.call(LoadBalancerCommand.java:303) ~[ribbon-loadbalancer-2.2.5.jar!/:2.2.5]

    at com.netflix.loadbalancer.reactive.LoadBalancerCommand$3$1.call(LoadBalancerCommand.java:287) ~[ribbon-loadbalancer-2.2.5.jar!/:2.2.5]

    at rx.internal.util.ScalarSynchronousObservable$3.call(ScalarSynchronousObservable.java:231) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.util.ScalarSynchronousObservable$3.call(ScalarSynchronousObservable.java:228) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.Observable.unsafeSubscribe(Observable.java:10327) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeConcatMap$ConcatMapSubscriber.drain(OnSubscribeConcatMap.java:286) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeConcatMap$ConcatMapSubscriber.onNext(OnSubscribeConcatMap.java:144) ~[rxjava-1.3.8.jar!/:1.3.8]

    at com.netflix.loadbalancer.reactive.LoadBalancerCommand$1.call(LoadBalancerCommand.java:185) ~[ribbon-loadbalancer-2.2.5.jar!/:2.2.5]

    at com.netflix.loadbalancer.reactive.LoadBalancerCommand$1.call(LoadBalancerCommand.java:180) ~[ribbon-loadbalancer-2.2.5.jar!/:2.2.5]

    at rx.Observable.unsafeSubscribe(Observable.java:10327) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:94) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:42) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.Observable.unsafeSubscribe(Observable.java:10327) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber$1.call(OperatorRetryWithPredicate.java:127) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.schedulers.TrampolineScheduler$InnerCurrentThreadScheduler.enqueue(TrampolineScheduler.java:73) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.schedulers.TrampolineScheduler$InnerCurrentThreadScheduler.schedule(TrampolineScheduler.java:52) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber.onNext(OperatorRetryWithPredicate.java:79) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber.onNext(OperatorRetryWithPredicate.java:45) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.util.ScalarSynchronousObservable$WeakSingleProducer.request(ScalarSynchronousObservable.java:276) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.Subscriber.setProducer(Subscriber.java:209) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.util.ScalarSynchronousObservable$JustOnSubscribe.call(ScalarSynchronousObservable.java:138) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.util.ScalarSynchronousObservable$JustOnSubscribe.call(ScalarSynchronousObservable.java:129) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.Observable.subscribe(Observable.java:10423) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.Observable.subscribe(Observable.java:10390) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:443) ~[rxjava-1.3.8.jar!/:1.3.8]

    at rx.observables.BlockingObservable.single(BlockingObservable.java:340) ~[rxjava-1.3.8.jar!/:1.3.8]

    at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:112) ~[ribbon-loadbalancer-2.2.5.jar!/:2.2.5]

    ... 36 common frames omitted

2.解决办法

在这里有兴趣的朋友可以去研究下源码

ApacheHttpClient.class

private ContentType getContentType(Request request) {

ContentType contentType = ContentType.DEFAULT_TEXT;

for (Map.Entry<String, Collection<String>> entry : request.headers().entrySet())

// 这里会判断 如果没有指定 Content-Type 属性 就使用上面默认的 text/plain; charset=ISO-8859-1

// 问题出在默认的 contentType ： 格式 text/plain; charset=ISO-8859-1

// 转到 ContentType.create(entry.getValue().iterator().next(), request.charset()); 方法中看

if (entry.getKey().equalsIgnoreCase("Content-Type")) {

Collection values = entry.getValue();

if (values != null && !values.isEmpty()) {

contentType = ContentType.create(entry.getValue().iterator().next(), request.charset());

break;

}

}

return contentType;

}

ContentType.class

public static ContentType create(final String mimeType, final Charset charset) {

final String normalizedMimeType = Args.notBlank(mimeType, "MIME type").toLowerCase(Locale.ROOT);

// 问题在这 check 中 valid f方法中

Args.check(valid(normalizedMimeType), "MIME type may not contain reserved characters");

return new ContentType(normalizedMimeType, charset);

}

private static boolean valid(final String s) {

for (int i = 0; i < s.length(); i++) {

final char ch = s.charAt(i);

// 这里 在上面 text/plain;charset=UTF-8 中出现了 分号 导致检验没有通过

if (ch == '"' || ch == ',' || ch == ';') {

return false;

}

}

return true;

}

解决办法：

@RequestMapping(value = "/generate/password", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)

转载自------https://xujin.org/sc/sc-fegin01/

--------------------- 作者：奔跑中的程序员来源：CSDN 原文：https://blog.csdn.net/u010131277/article/details/76033794

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