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使用Glassfish 3.1.2和Spring实施Grizzly Websockets

[英]Implementing Grizzly Websockets with Glassfish 3.1.2 and Spring

 原文  2017-11-24 13:16:57  8   1    java/ spring/ websocket/ glassfish-3/ grizzly

问题描述

我正在尝试向在Glassfish 3.1.2和Spring 4.1.5-RELEASE上运行的旧应用程序添加网络套接字通知。 实施Spring的websocket无法正常工作，因为它需要GlassFish 4.1+，并且我们无法升级应用程序服务器。 我使用的是Grizzly网络套接字1.9.x，我创建了一个非常基本的@Component扩展了WebSocketApplication类并实现了与bean事件相关的接口。 这是对象 

@Component
public class CCMarshaller extends WebSocketApplication implements InitializingBean, DisposableBean   {

    private static final String TOPIC = "/realtime-channel";

    @Override
    public WebSocket createWebSocket(ProtocolHandler protocolHandler, WebSocketListener... listeners) {
        return new DefaultWebSocket(protocolHandler, listeners);
    }

    @Override
    public boolean isApplicationRequest(Request request) {
        final String uri = request.requestURI().toString();
        return uri.endsWith(TOPIC);
    }

    /* Test */
    @Override
    public void onMessage(WebSocket socket, String text) {
        EventDto e = new EventDto();
        e.setId(45);
        broadcast(e);
    }

    private void broadcast(EventDto evt) {
        for (WebSocket webSocket : getWebSockets()) {
            if (!webSocket.isConnected()) {
               continue;
            }
            try {
                ObjectMapper mapper = new ObjectMapper();
                webSocket.send(mapper.writeValueAsString(evt));
            } catch (WebSocketException e) {
                e.printStackTrace();
                webSocket.close();
            } catch (JsonProcessingException e) {
                e.printStackTrace();
                webSocket.close();
            }
        }
    }


    @Override
    public void afterPropertiesSet() throws Exception {
        WebSocketEngine.getEngine().register(this);
    }


    @Override
    public void destroy() throws Exception {
        WebSocketEngine.getEngine().unregister(this);
    }

}

我对Spring世界还很陌生，但是我对这个bean的生命周期的理解是：（大约）：( 1）在启动时创建单例，（2）然后框架调用afterPropertiesSet，（3）注册WebSocketApplication对象（此） （4）对/ realtime-channel的每个请求将由WebSocketApplication调用OnMessage回调处理。 broadcast功能是用于将对象广播到所有连接的套接字（对象转换为json）的助手。

它可以工作一段时间...）

当应用程序启动时，我可以登录并导航第一行，其中使用几行代码即可完成javascript连接： 

var WSManager = {
        url: 'ws://' + window.location.host + '/realtime-channel',
        init: function() {
            websocket = new WebSocket(WSManager.url);
            websocket.onmessage = function (evt) {
                // process message with jquery
            };
        }
    };
WSManager.init();

客户端通过websocket连接后，应用程序可以发送消息并接收（广播）对象，因此它运行良好。 即使我与其他websocket测试工具连接也无法正常工作。 当我尝试导航到其他页面（纯Spring导航）时，就会出现问题。 应用程序挂起，server.log显示以下消息： 

[#|2017-11-24T13:36:32.350+0100|WARNING|glassfish3.1.2|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=139;_ThreadName=Thread-2;|StandardWrapperValve[mvc-dispatcher]: PWC1406: Servlet.service() for servlet mvc-dispatcher threw exception
java.lang.NullPointerException
    at org.apache.catalina.connector.Request.setAttribute(Request.java:1688)
    at org.apache.catalina.connector.RequestFacade.setAttribute(RequestFacade.java:570)
    at org.springframework.web.context.request.async.WebAsyncUtils.getAsyncManager(WebAsyncUtils.java:49)
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1023)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
    at com.sun.grizzly.arp.DefaultAsyncExecutor.execute(DefaultAsyncExecutor.java:159)
    at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:145)
    at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:102)
    at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193)
    at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175)
    at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145)
    at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:210)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:745)
|#]

[#|2017-11-24T13:36:32.351+0100|SEVERE|glassfish3.1.2|org.apache.catalina.connector.CoyoteAdapter|_ThreadID=139;_ThreadName=Thread-2;|PWC3989: An exception or error occurred in the container during the request processing
java.lang.NullPointerException
    at org.apache.catalina.connector.Request.setAttribute(Request.java:1688)
    at org.apache.catalina.connector.RequestFacade.setAttribute(RequestFacade.java:570)
    at org.apache.catalina.core.StandardWrapperValve.exception(StandardWrapperValve.java:465)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:335)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
    at com.sun.grizzly.arp.DefaultAsyncExecutor.execute(DefaultAsyncExecutor.java:159)
    at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:145)
    at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:102)
    at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193)
    at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175)
    at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145)
    at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:210)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:745)
|#]

[#|2017-11-24T13:36:32.354+0100|SEVERE|glassfish3.1.2|com.sun.grizzly.config.GrizzlyServiceListener|_ThreadID=139;_ThreadName=Thread-2;|java.lang.NullPointerException
    at com.sun.grizzly.arp.AsyncProcessorTask.obtainAndSetThreadAttachment(AsyncProcessorTask.java:230)
    at com.sun.grizzly.arp.AsyncProcessorTask.enableTimeout(AsyncProcessorTask.java:223)
    at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:127)
    at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193)
    at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175)
    at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145)
    at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:210)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:745)
|#]

[#|2017-11-24T13:36:32.354+0100|INFO|glassfish3.1.2|com.sun.grizzly.config.GrizzlyServiceListener|_ThreadID=139;_ThreadName=Thread-2;|Processor exception
java.lang.RuntimeException: java.lang.NullPointerException
    at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:140)
    at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193)
    at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175)
    at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145)
    at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:210)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
    at com.sun.grizzly.arp.AsyncProcessorTask.obtainAndSetThreadAttachment(AsyncProcessorTask.java:230)
    at com.sun.grizzly.arp.AsyncProcessorTask.enableTimeout(AsyncProcessorTask.java:223)
    at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:127)
    ... 14 more
|#]

我已经在玻璃鱼上启动了此命令： 

asadmin set configs.config.server-config.network-config.protocols.protocol.http-listener-1.http.websockets-support-enabled=true

似乎某个地方Spring失去了REQUEST对象，那似乎是空的。 也许我必须在与URL / realtime-channel相关的web.xml文件中进行某种配置？

如果我删除了websocket注册WebSocketEngine.getEngine().register(this); 一切正常，但websocket当然不再起作用。

其他例外

有时，应用程序还会引发其他异常： 

[#|2017-11-24T14:47:11.655+0100|SEVERE|glassfish3.1.2|com.sun.grizzly.config.GrizzlyServiceListener|_ThreadID=123;_ThreadName=Thread-2;|java.lang.NullPointerException
    at com.sun.grizzly.arp.AsyncProcessorTask.obtainAndSetThreadAttachment(AsyncProcessorTask.java:230)
    at com.sun.grizzly.arp.AsyncProcessorTask.enableTimeout(AsyncProcessorTask.java:223)
    at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:127)
    at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193)
    at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175)
    at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145)
    at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:210)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:745)
|#]

[#|2017-11-24T14:47:11.657+0100|INFO|glassfish3.1.2|com.sun.grizzly.config.GrizzlyServiceListener|_ThreadID=123;_ThreadName=Thread-2;|Processor exception
java.lang.RuntimeException: java.lang.NullPointerException
    at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:140)
    at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193)
    at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175)
    at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145)
    at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:210)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
    at com.sun.grizzly.arp.AsyncProcessorTask.obtainAndSetThreadAttachment(AsyncProcessorTask.java:230)
    at com.sun.grizzly.arp.AsyncProcessorTask.enableTimeout(AsyncProcessorTask.java:223)
    at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:127)
    ... 14 more
|#]

更新

如果我定义HandlerInterceptor所有网址，并添加断点，我可以看到异常的执行后提高preHandle钩和执行后postHandle钩（在两个函数HttpServletRequest对象是有效的）。

1 个解决方案

解决方案1
 0  2017-12-13 15:43:12

几天后，我设法解决了使用Grizzly Framework 1.9.50升级到Glassfish Server 3.1.2.2的问题，因为Grizzly Framework 1.9.46似乎不适用于Web套接字。

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