jetty9.2.4 websocket error

[weisijun918612]

java.lang.NullPointerException
at org.eclipse.jetty.websocket.server.WebSocketServerFactory.upgrade(WebSocketServerFactory.java:514)
at org.eclipse.jetty.websocket.server.WebSocketServerFactory.acceptWebSocket(WebSocketServerFactory.java:185)
at org.eclipse.jetty.websocket.server.WebSocketServerFactory.acceptWebSocket(WebSocketServerFactory.java:152)
at org.eclipse.jetty.websocket.servlet.WebSocketServlet.service(WebSocketServlet.java:151)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:594)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:351)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:890)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:944)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:634)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
at java.lang.Thread.run(Thread.java:744)

[weisijun918612]

package examples; import java.util.concurrent.CountDownLatch; import java.util.concurrent.Future; import java.util.concurrent.TimeUnit; import org.eclipse.jetty.websocket.api.Session; import org.eclipse.jetty.websocket.api.StatusCode; import org.eclipse.jetty.websocket.api.annotations.OnWebSocketClose; import org.eclipse.jetty.websocket.api.annotations.OnWebSocketConnect; import org.eclipse.jetty.websocket.api.annotations.OnWebSocketError; import org.eclipse.jetty.websocket.api.annotations.OnWebSocketMessage; import org.eclipse.jetty.websocket.api.annotations.WebSocket; /** * Basic Echo Client Socket */ @WebSocket(maxTextMessageSize = 64 * 1024) public class SimpleEchoSocket { private final CountDownLatch closeLatch; @SuppressWarnings("unused") private Session session; public SimpleEchoSocket() { this.closeLatch = new CountDownLatch(1); } public boolean awaitClose(int duration, TimeUnit unit) throws InterruptedException { return this.closeLatch.await(duration, unit); } @OnWebSocketClose public void onClose(int statusCode, String reason) { System.out.printf("Connection closed: %d - %s%n", statusCode, reason); this.session = null; this.closeLatch.countDown(); } @OnWebSocketConnect public void onConnect(Session session) { System.out.printf("Got connect: %s%n", session); this.session = session; try { Future<Void> fut; fut = session.getRemote().sendStringByFuture("Hello"); fut.get(2, TimeUnit.SECONDS); fut = session.getRemote().sendStringByFuture("Thanks for the conversation."); fut.get(2, TimeUnit.SECONDS); session.close(StatusCode.NORMAL, "I'm done"); } catch (Throwable t) { t.printStackTrace(); } } @OnWebSocketError public void onError(Throwable cause) { cause.getStackTrace(); } @OnWebSocketMessage public void onMessage(String msg) { // session.getUpgradeResponse().get System.out.printf("Got msg: %s%n", msg); } //@OnWebSocketMessage //public void onMessage(byte buf[], int offset, int length) { // System.out.printf("Got msg: %s%n", "12"); //} }

[weisijun918612]

package examples; import javax.servlet.annotation.WebServlet; import org.eclipse.jetty.websocket.servlet.WebSocketServlet; import org.eclipse.jetty.websocket.servlet.WebSocketServletFactory; @WebServlet(name = "MyEcho WebSocket Servlet", urlPatterns = { "/hello" }) public class SimpleEchoServlet extends WebSocketServlet { /** * @Fields serialVersionUID : TODO(用一句话描述这个变量表示什么) */ private static final long serialVersionUID = 5837369488442566390L; @Override public void configure(WebSocketServletFactory factory) { factory.getPolicy().setIdleTimeout(10000); //ClientUpgradeRequest request = new ClientUpgradeRequest(); //ClientUpgradeResponse response = new ClientUpgradeResponse(); //factory.acceptWebSocket(request, response); factory.register(SimpleEchoSocket.class); // factory.acceptWebSocket(arg0, arg1); } }