关于java：在jetty中部署webapps和websockets

Deploy webapps and websockets in jetty

我已将 Jetty 嵌入到我的应用程序中。我有一个 webapp，并且我成功地在 Jetty 中部署了该 webapp。现在我对 Websockets 有了另一个要求。我按照此链接在 Jetty 中部署 websockets。将 Websocket 部署到我的服务器后，第一个 web 应用程序无法正常工作(主页未打开)。这是图像

enter

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List<Handler> handlersList = new ArrayList<Handler>();
WebAppContext webAppContext = new WebAppContext();
webAppContext.setResourceBase(webApp.appDir);
webAppContext.setDescriptor(webApp.appDir +"/WEB-INF/web.xml");
webAppContext.setContextPath(webApp.contextPath);
webAppContext.setParentLoaderPriority(true);
// webAppContext.setWar(webApp.appDir);
webAppContext.setVirtualHosts(webApp.hostName);
handlersList.add(webAppContext);
argNewServer.setHandler(handlersList);

WebSocket 部署：

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ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setContextPath("/echo");
argServer.setHandler(context);

// Initialize javax.websocket layer
ServerContainer wscontainer;
try {
wscontainer = WebSocketServerContainerInitializer.configureContext(context);
// Add WebSocket endpoint to javax.websocket layer
wscontainer.addEndpoint(WebSocketServer.class);
} catch (ServletException | DeploymentException e) {
throw new RuntimeException("Exception while adding websocket endpoint:", e);
}

WebSocketServer.java:

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package com.tdg.chat;

import java.io.IOException;

import javax.websocket.CloseReason;
import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;

@ServerEndpoint(value ="/events/")
public class WebSocketServer {
@OnOpen
public void onWebSocketConnect(Session sess) {
System.out.println("Socket Connected:" + sess);
}

@OnMessage
public void onWebSocketText(Session argSession, String argMessage) throws IOException {
System.out.println("Received TEXT message:" + argMessage);
argSession.getBasicRemote().sendText("From Server:");
}

@OnClose
public void onWebSocketClose(CloseReason reason) {
System.out.println("Socket Closed:" + reason);
}

@OnError
public void onWebSocketError(Throwable cause) {
cause.printStackTrace(System.err);
}
}

如果我包含上述 websocket 代码，则实际的 webapp 无法正常工作，但 websocket 代码正在运行。

那么如何在一个 Jetty 服务器上部署 webapp 和 websocket 呢？

更新：

我尝试将 Websockets 包含在当前 webapp 本身中，但出现以下异常。

java.lang.NullPointerException: null
at org.eclipse.jetty.websocket.jsr356.server.deploy.WebSocketServerContainerInitializer.configureContext(WebSocketServerContainerInitializer.java:65) ~[javax-websocket-server-impl-9.3.6.v20151106.jar:9.3.6.v20151106]
at com.tdg.daemon.server.RiseServer.getWebappHandlers(RiseServer.java:122) ~[classes/:na]
at com.tdg.daemon.server.RiseServer.addWebApps(RiseServer.java:77) ~[classes/:na]
at com.tdg.daemon.server.RiseServer.init(RiseServer.java:59) ~[classes/:na]
at com.tdg.daemon.server.RiseServerConfiguration.build(RiseServerConfiguration.java:475) ~[classes/:na]
at com.tdg.daemon.server.launcher.DefaultTdgServerLauncher.start(DefaultTdgServerLauncher.java:78) [classes/:na]
at com.tdg.daemon.server.launcher.DefaultTdgServerLauncher.main(DefaultTdgServerLauncher.java:140) [classes/:na]
java.lang.NullPointerException
at org.eclipse.jetty.websocket.jsr356.server.deploy.WebSocketServerContainerInitializer.configureContext(WebSocketServerContainerInitializer.java:65)
at com.tdg.daemon.server.RiseServer.getWebappHandlers(RiseServer.java:122)
at com.tdg.daemon.server.RiseServer.addWebApps(RiseServer.java:77)
at com.tdg.daemon.server.RiseServer.init(RiseServer.java:59)
at com.tdg.daemon.server.RiseServerConfiguration.build(RiseServerConfiguration.java:475)
at com.tdg.daemon.server.launcher.DefaultTdgServerLauncher.start(DefaultTdgServerLauncher.java:78)
at com.tdg.daemon.server.launcher.DefaultTdgServerLauncher.main(DefaultTdgServerLauncher.java:140)
[] 12/02/2015 17:50:06.985 [main - ] INFO c.t.d.s.l.DefaultTdgServerLauncher - RiseServer started on port 80 and 443.