java - Apache cxf 服务器异步请求处理

Question

嗨，我需要在 apache cxf 服务器中实现异步处理请求。到目前为止，我认为我需要将 AsyncResponse 添加到请求中。但它不起作用。

@GET
@Path("/test")
@Produces(MediaType.APPLICATION_XML)
@Consumes(MediaType.APPLICATION_XML)
void sample(@Suspended AsyncResponse asyncResponse);

@Override
    public void sample(AsyncResponse asyncResponse) {
        asyncResponse.setTimeout(3, TimeUnit.MINUTES);
        asyncResponse.setTimeoutHandler(new TimeoutHandler() {
            @Override
            public void handleTimeout(AsyncResponse asyncResponse) {
                asyncResponse.resume("Sample");
            }
        });

    }

当我向端点发送请求时，它会抛出异常。

WebApplicationExceptionMapper - WebApplicationException has been caught, status: 415 
javax.ws.rs.WebApplicationException 
    at org.apache.cxf.jaxrs.utils.JAXRSUtils.readFromMessageBody(JAXRSUtils.java:1054) 
    at org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameter(JAXRSUtils.java:614) 
    at org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameters(JAXRSUtils.java:578) 
    at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest(JAXRSInInterceptor.java:238) 
    at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage(JAXRSInInterceptor.java:89) 
    at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:262) 
    at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:122) 
    at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.serviceRequest(JettyHTTPDestination.java:344) 
    at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:310) 
    at org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:72) 
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:943) 
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:879) 
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) 
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250) 
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) 
    at org.eclipse.jetty.server.Server.handle(Server.java:345) 
    at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441) 
    at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:919) 
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:582) 
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218) 
    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51) 
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586) 
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44) 
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598) 
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)

我想知道我异步实现的方式是否正确，如果是这样，我的实现有什么问题。

Answer 1

不确定您是否仍在寻找答案。您的实现看起来很好，通过查看堆栈跟踪，服务器似乎无法正确理解请求。请检查 web.xml 中是否有您正在使用的过滤器。过滤器应该具有此属性( true )以支持异步调用。

你的过滤器应该是这样的..

<filter>
    <filter-name>XXXXXX</filter-name>
    <filter-class>xxx.xxx.xxx.XXXXXX</filter-class>
  <async-supported>true</async-supported>
</filter>