Jersey ContainerRequestFilter 导致 MarshallingException

Question

我创建了一个新的 ContainerRequestFilter 来打印出任何传入的新请求有效负载，但前提是 HTTP 服务器是使用 DEBUG_MODE 参数启动的。当我不在 DEBUG_MODE 中向我的 REST 资源发送请求时，一切正常。当此过滤器执行时：

@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());
    }
  }
}

我得到以下长堆栈跟踪 AFTER 2 条打印行在此过滤器中执行得很好（但在代码到达我的资源之前 class）：

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$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
    at org.glassfish.jersey.server.ServerRuntime.run(ServerRuntime.java:326)
    at org.glassfish.jersey.internal.Errors.call(Errors.java:271)
    at org.glassfish.jersey.internal.Errors.call(Errors.java:267)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
    at org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:384)
    at org.glassfish.grizzly.http.server.HttpHandler.run(HttpHandler.java:224)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$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

我不确定是什么导致了这里的问题，有什么提示吗？

Answer 1

一个流只能被读取一次。如果你在过滤器中读取它，那么 MessageBodyReader 就没有什么可读的了。这可能是导致异常的原因。如果你要读取过滤器中的流，那么你应该用 requestContext.setEntityStream.

重置它

Jersey ContainerRequestFilter 导致 MarshallingException

Jersey ContainerRequestFilter causes MarshallingException

jersey

java-io

moxy

jersey-2.0