無法獲取使用JAX-RS新澤西2.3.1和Tomcat ChunkedOutput工作7

我不能讓ChunkedOutput使用JAX-RS新澤西2.3.1和Tomcat 7.我想按照教程從Jersey Tutorial - Chapter 10. Asynchronous Services and Clients 無法獲取使用JAX-RS新澤西2.3.1和Tomcat ChunkedOutput工作7

工作

我的代碼如下所示

@GET 
@Path("/asynchronous") 
public ChunkedOutput<String> getAsyncResponse() { 

    final ChunkedOutput<String> output = new ChunkedOutput<String>(String.class); 

    new Thread() { 
     public void run() { 
      try { 
       String text; 
       for (int i = 0; i < 20; i++) { 
        text = String.valueOf(i); 
        output.write(text); 
        Thread.sleep(1000); 
       } 
      } catch (Throwable th) { 
       th.printStackTrace(); 
      } finally { 
       try { 
        output.close(); 
       } catch (IOException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 
      } 
     } 
    }.start(); 

    return output; 
}

當我嘗試調用它是否通過捲曲或我的Java客戶端，我上了Web服務端以下異常。

org.glassfish.jersey.server.internal.process.MappableException: java.lang.NullPointerException 
    at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:96) 
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:149) 
    at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1139) 
    at org.glassfish.jersey.server.ChunkedOutput$1.call(ChunkedOutput.java:148) 
    at org.glassfish.jersey.server.ChunkedOutput$1.call(ChunkedOutput.java:121) 
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315) 
    at org.glassfish.jersey.internal.Errors.process(Errors.java:242) 
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:345) 
    at org.glassfish.jersey.server.ChunkedOutput.flushQueue(ChunkedOutput.java:121) 
    at org.glassfish.jersey.server.ChunkedOutput.write(ChunkedOutput.java:111) 
    at jaxrs.prototype.tomcat7.AsyncPrototype$1.run(AsyncPrototype.java:82) 
Caused by: java.lang.NullPointerException 
    at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:215) 
    at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:480) 
...

任何想法出了什麼問題？最初我在Tomcat 6上部署它，然後我意識到異步功能在Servlet 3.0 API中可用，並且Tomcat 6不支持該功能，因此我切換到了Tomcat 7.

來源

2013-10-09 beyonddc

在web.xml中添加異步支持欺騙我。之後我不再看到異常。

雖然每次發生寫入時，我的客戶端仍然沒有收到分塊輸出的問題。相反，它最終會一次接收所有分塊輸出。

<servlet> 
    <servlet-name>Jersey REST Service</servlet-name> 
    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class> 
    <init-param> 
     <param-name>jersey.config.server.provider.packages</param-name> 
     <param-value>jaxrs.prototype;org.codehaus.jackson.jaxrs</param-value> 
    </init-param> 
    <load-on-startup>1</load-on-startup> 
    <async-supported>true</async-supported> 
    </servlet>

來源

2013-10-09 05:17:40 beyonddc

即使在web.xml中添加異步支持，在Tomcat 7和JRE 1.7組合中仍面臨同樣的問題。 – Nagesh

無法獲取使用JAX-RS新澤西2.3.1和Tomcat ChunkedOutput工作7

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