Jersey ContainerRequestFilter导致MarshallingException

我创建了一个新的ContainerRequestFilter，用于打印输入的所有新请求有效内容，但前提是HTTP服务器以DEBUG_MODE参数启动。当我发送一个请求到我的REST资源，而不是在DEBUG_MODE，一切工作正常。当这种滤波器来执行：Jersey ContainerRequestFilter导致MarshallingException

@Provider 
@Priority(Priorities.USER) 
public class InboundDebugFilter implements ContainerRequestFilter { 

    @Override 
    public void filter(ContainerRequestContext requestContext) throws IOException { 
    if (AuthorizationMain.DEBUG_MODE) { 
     System.out.println("New request at: " + requestContext.getUriInfo().getRequestUri().toString()); 
     BufferedReader br = new BufferedReader(new InputStreamReader(requestContext.getEntityStream(), "utf-8")); 
     StringBuilder sb = new StringBuilder(); 
     String line; 
     while ((line = br.readLine()) != null) { 
     sb.append(line).append("\n"); 
     } 
     br.close(); 
     System.out.println(sb.toString()); 
    } 
    } 
}

我碰到下面的长堆栈跟踪后 2条打印线在此过滤器执行得很好（但在此之前的代码获取到我的资源类）：

javax.ws.rs.WebApplicationException: HTTP 400 Bad Request 
    at org.eclipse.persistence.jaxb.rs.MOXyJsonProvider.readFrom(MOXyJsonProvider.java:708) 
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.invokeReadFrom(ReaderInterceptorExecutor.java:256) 
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:235) 
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:155) 
    at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundReadFrom(MappableExceptionWrapperInterceptor.java:74) 
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:155) 
    at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1085) 
    at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:874) 
    at org.glassfish.jersey.server.ContainerRequest.readEntity(ContainerRequest.java:271) 
    at org.glassfish.jersey.server.internal.inject.EntityParamValueFactoryProvider$EntityValueFactory.provide(EntityParamValueFactoryProvider.java:96) 
    at org.glassfish.jersey.server.spi.internal.ParamValueFactoryWithSource.provide(ParamValueFactoryWithSource.java:71) 
    at org.glassfish.jersey.server.spi.internal.ParameterValueHelper.getParameterValues(ParameterValueHelper.java:94) 
    at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$AbstractMethodParamInvoker.getParamValues(JavaResourceMethodDispatcherProvider.java:127) 
    at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160) 
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) 
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389) 
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347) 
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) 
    at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326) 
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) 
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) 
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315) 
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297) 
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267) 
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) 
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) 
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) 
    at org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:384) 
    at org.glassfish.grizzly.http.server.HttpHandler$1.run(HttpHandler.java:224) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: javax.xml.bind.UnmarshalException 
- with linked exception: 
[Exception [EclipseLink-25004] (Eclipse Persistence Services - 2.6.0.v20150309-bf26070): org.eclipse.persistence.exceptions.XMLMarshalException 
Exception Description: An error occurred unmarshalling the document 
Internal Exception: javax.json.JsonException: I/O error while parsing JSON] 
    at org.eclipse.persistence.jaxb.JAXBUnmarshaller.handleXMLMarshalException(JAXBUnmarshaller.java:1072) 
    at org.eclipse.persistence.jaxb.JAXBUnmarshaller.unmarshal(JAXBUnmarshaller.java:341) 
    at org.eclipse.persistence.jaxb.rs.MOXyJsonProvider.readFrom(MOXyJsonProvider.java:660) 
    ... 31 more 
Caused by: Exception [EclipseLink-25004] (Eclipse Persistence Services - 2.6.0.v20150309-bf26070): org.eclipse.persistence.exceptions.XMLMarshalException 
Exception Description: An error occurred unmarshalling the document 
Internal Exception: javax.json.JsonException: I/O error while parsing JSON 
    at org.eclipse.persistence.exceptions.XMLMarshalException.unmarshalException(XMLMarshalException.java:120) 
    at org.eclipse.persistence.internal.oxm.record.json.JsonStructureReader.parse(JsonStructureReader.java:147) 
    at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:978) 
    at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:425) 
    at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:375) 
    at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:708) 
    at org.eclipse.persistence.internal.oxm.XMLUnmarshaller.unmarshal(XMLUnmarshaller.java:643) 
    at org.eclipse.persistence.jaxb.JAXBUnmarshaller.unmarshal(JAXBUnmarshaller.java:339) 
    ... 32 more 
Caused by: javax.json.JsonException: I/O error while parsing JSON 
    at org.glassfish.json.JsonTokenizer.read(JsonTokenizer.java:444) 
    at org.glassfish.json.JsonTokenizer.nextToken(JsonTokenizer.java:354) 
    at org.glassfish.json.JsonParserImpl$NoneContext.getNextEvent(JsonParserImpl.java:222) 
    at org.glassfish.json.JsonParserImpl$StateIterator.next(JsonParserImpl.java:172) 
    at org.glassfish.json.JsonParserImpl.next(JsonParserImpl.java:149) 
    at org.glassfish.json.JsonReaderImpl.read(JsonReaderImpl.java:84) 
    at org.eclipse.persistence.internal.oxm.record.json.JsonStructureReader.parse(JsonStructureReader.java:139) 
    ... 38 more 
Caused by: java.io.IOException 
    at org.glassfish.grizzly.http.io.InputBuffer.read(InputBuffer.java:341) 
    at org.glassfish.grizzly.http.server.NIOInputStreamImpl.read(NIOInputStreamImpl.java:83) 
    at org.glassfish.jersey.message.internal.EntityInputStream.read(EntityInputStream.java:102) 
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$UnCloseableInputStream.read(ReaderInterceptorExecutor.java:296) 
    at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284) 
    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326) 
    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178) 
    at java.io.InputStreamReader.read(InputStreamReader.java:184) 
    at org.glassfish.json.JsonTokenizer.fillBuf(JsonTokenizer.java:473) 
    at org.glassfish.json.JsonTokenizer.read(JsonTokenizer.java:434) 
    ... 44 more

我不确定是什么原因导致这里的问题，有什么提示？

来源

2017-11-18 Zoltán Umlauf

流只能读取一次。如果您在过滤器中读取它，那么MessageBodyReader没有任何可读的内容。这可能会导致异常。如果您要在过滤器中读取流，则应使用requestContext.setEntityStream重置它。 –

谢谢，这是问题所在。想将它作为答案发布，以便我可以接受它？ –

流只能读取一次。如果您在过滤器中读取它，则MessageBodyReader没有任何可读的内容。这可能会导致异常。如果您要读取过滤器中的流，则应使用requestContext.setEntityStream进行重置。

来源

2017-11-19 17:26:49

Jersey ContainerRequestFilter导致MarshallingException

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