问题描述
- websocket jsp端出现404
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tomcat 8 jdk 1.7 eclipse中Build id: 20140925-1800
在java后台写的websocket前端jsp中始终出现404的错误，网上查了下有说差jar包的有说tomcat 7以上的，我这都满足了要求为什么还要报错呢？请各位帮我看看嘛
@ServerEndpoint(value = "/websocket/chat")
public class ChatAnnotation {
private static final Log log = LogFactory.getLog(ChatAnnotation.class); private static final String GUEST_PREFIX = "Guest"; private static final AtomicInteger connectionIds = new AtomicInteger(0); private static final Map<String,Object> connections = new HashMap<String,Object>(); private final String nickname; private Session session; public ChatAnnotation() { nickname = GUEST_PREFIX + connectionIds.getAndIncrement(); } @OnOpen public void start(Session session) { this.session = session; connections.put(nickname, this); String message = String.format("* %s %s", nickname, "has joined."); broadcast(message); } @OnClose public void end() { connections.remove(this); String message = String.format("* %s %s", nickname, "has disconnected."); broadcast(message); } /** * 消息发送触发方法 * @param message */ @OnMessage public void incoming(String message) { // Never trust the client String filteredMessage = String.format("%s: %s", nickname, HTMLFilter.filter(message.toString())); broadcast(filteredMessage); } @OnError public void onError(Throwable t) throws Throwable { log.error("Chat Error: " + t.toString(), t); } /** * 消息发送方法 * @param msg */ private static void broadcast(String msg) { if(msg.indexOf("Guest0")!=-1){ sendUser(msg); } else{ sendAll(msg); } } /** * 向所有用户发送 * @param msg */ public static void sendAll(String msg){ for (String key : connections.keySet()) { ChatAnnotation client = null ; try { client = (ChatAnnotation) connections.get(key); synchronized (client) { client.session.getBasicRemote().sendText(msg); } } catch (IOException e) { log.debug("Chat Error: Failed to send message to client", e); connections.remove(client); try { client.session.close(); } catch (IOException e1) { // Ignore } String message = String.format("* %s %s", client.nickname, "has been disconnected."); broadcast(message); } } } /** * 向指定用户发送消息 * @param msg */ public static void sendUser(String msg){ ChatAnnotation c = (ChatAnnotation)connections.get("Guest0"); try { c.session.getBasicRemote().sendText(msg); } catch (IOException e) { log.debug("Chat Error: Failed to send message to client", e); connections.remove(c); try { c.session.close(); } catch (IOException e1) { // Ignore } String message = String.format("* %s %s", c.nickname, "has been disconnected."); broadcast(message); } }}
<!DOCTYPE HTML><script type="text/javascript"> function WebSocketTest() { if ("WebSocket" in window) { alert("WebSocket is supported by your Browser!"); // Let us open a web socket var ws = new WebSocket("ws://192.168.2.158:8080/WebRTC/websocket/chat"); ws.onopen = function() { // Web Socket is connected, send data using send() ws.send("Message to send"); alert("Message is sent..."); }; ws.onmessage = function (evt) { var received_msg = evt.data; alert("Message is received..."); }; ws.onclose = function() { // websocket is closed. alert("Connection is closed..."); }; } else { // The browser doesn't support WebSocket alert("WebSocket NOT supported by your Browser!"); } } </script><div id="sse"> <a href="javascript:WebSocketTest()">Run WebSocket</a> </div>
时间： 2024-11-01 05:31:50