在Java中用WebSockets實現一個聊天室示例：java-chatroom

java-chatroom是一個在Java中使用WebSockets實現的簡單聊天室示例應用。運行方法：

java -jar dist/JavaWebSockets.jar -p [some free port number]

服務器端代碼：

ContextHandler contextHandler = new ContextHandler();
contextHandler.setContextPath("/chat");
contextHandler.setHandler(new WebSocketHandler() {
  @Override
  public void configure(WebSocketServletFactory factory) {
    factory.setCreator(new WebSocketCreator() {
      @Override
      public Object createWebSocket(UpgradeRequest req, UpgradeResponse resp) {
        String query = req.getRequestURI().toString();
        if ((query == null) || (query.length() <= 0)) {
          try {
            resp.sendForbidden("Unspecified query");
          } catch (IOException e) {

          }
          return null;
        }
        return new ChatroomSocket();
      }
    });
  }
});

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