javaWebSocket的实现以及SpringWebSocket示例代码

public static void f1() {
    try {
      WebSocketContainer cOntainer= ContainerProvider.getWebSocketContainer(); // 获取WebSocket连接器，其中具体实现可以参照websocket-api.jar的源码,Class.forName("org.apache.tomcat.websocket.WsWebSocketContainer");
      String uri = "ws://localhost:8081/log/log";
      Session session = container.connectToServer(Client.class, new URI(uri)); // 连接会话
      session.getBasicRemote().sendText("123132132131"); // 发送文本消息
      session.getBasicRemote().sendText("4564546");
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

@ClientEndpoint
public class Client {

  @OnOpen
  public void onOpen(Session session) {
    System.out.println("Connected to endpoint: " + session.getBasicRemote());
  }

  @OnMessage
  public void onMessage(String message) {
    System.out.println(message);
  }

  @OnError
  public void onError(Throwable t) {
    t.printStackTrace();
  }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Lazy;
import org.springframework.messaging.simp.SimpMessagingTemplate;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;

import com.gionee.log.client.LogWebSocketHandler;

/**
 * 注册普通WebScoket
 * @author PengBin
 * @date 2016年6月21日 下午5:29:00
 */
@Configuration
@EnableWebMvc
@EnableWebSocket
public class WebSocketConfig extends WebMvcConfigurerAdapter implements WebSocketConfigurer {

  @Autowired
  @Lazy
  private SimpMessagingTemplate template;

  /** {@inheritDoc} */
  @Override
  public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
    registry.addHandler(logWebSocketHandler(), "/log"); // 此处与客户端的 URL 相对应
  }

  @Bean
  public WebSocketHandler logWebSocketHandler() {
    return new LogWebSocketHandler(template);
  }

}

import org.springframework.messaging.simp.SimpMessagingTemplate;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.handler.TextWebSocketHandler;

/**
 * 
 * @author PengBin
 * @date 2016年6月24日 下午6:04:39
 */
public class LogWebSocketHandler extends TextWebSocketHandler {

  private SimpMessagingTemplate template;

  public LogWebSocketHandler(SimpMessagingTemplate template) {
    this.template = template;
    System.out.println("初始化 handler");
  }

  @Override
  protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
    String text = message.getPayload(); // 获取提交过来的消息
    System.out.println("handMessage:" + text);
    // template.convertAndSend("/topic/getLog", text); // 这里用于广播
    session.sendMessage(message);
  }
}

public static void main(String[] args) {
    try {
      WebSocketContainer cOntainer= ContainerProvider.getWebSocketContainer();
      String uri = "ws://localhost:8081/log/hello/hello/websocket";
      Session session = container.connectToServer(Client.class, new URI(uri));
      char lf = 10; // 这个是换行
      char nl = 0; // 这个是消息结尾的标记，一定要
      StringBuilder sb = new StringBuilder();
      sb.append("SEND").append(lf); // 请求的命令策略
      sb.append("destination:/app/hello").append(lf); // 请求的资源
      sb.append("content-length:14").append(lf).append(lf); // 消息体的长度
      sb.append("{\"name\":\"123\"}").append(nl); // 消息体

      session.getBasicRemote().sendText(sb.toString()); // 发送消息
      Thread.sleep(50000); // 等待一小会
      session.close(); // 关闭连接

    } catch (Exception e) {
      e.printStackTrace();
    }
  }

/**
 * 启用STOMP协议WebSocket配置
 * @author PengBin
 * @date 2016年6月24日 下午5:59:42
 */
@Configuration
@EnableWebMvc
@EnableWebSocketMessageBroker
public class WebSocketBrokerConfig extends AbstractWebSocketMessageBrokerConfigurer {

  /** {@inheritDoc} */
  @Override
  public void registerStompEndpoints(StompEndpointRegistry registry) {
    System.out.println("注册");
    registry.addEndpoint("/hello").withSockJS(); // 注册端点，和普通服务端的/log一样的
    // withSockJS()表示支持socktJS访问，在浏览器中使用
  }

  /** {@inheritDoc} */
  @Override
  public void configureMessageBroker(MessageBrokerRegistry config) {
    System.out.println("启动");
    config.enableSimpleBroker("/topic"); // 
    config.setApplicationDestinationPrefixes("/app"); // 格式前缀
  }

}

Controller

@Controller
public class LogController {

  private SimpMessagingTemplate template;

  @Autowired
  public LogController(SimpMessagingTemplate template) {
    System.out.println("init");
    this.template = template;
  }

  @MessageMapping("/hello") 
  @SendTo("/topic/greetings") // 订阅
  public Greeting greeting(HelloMessage message) throws Exception {
    System.out.println(message.getName());
    Thread.sleep(3000); // simulated delay
    return new Greeting("Hello, " + message.getName() + "!");
  }

}

 function connect() {
   var socket = new SockJS('/log/hello/hello');
   stompClient = Stomp.over(socket);
   stompClient.connect({}, function(frame) {
     setConnected(true);
     console.log('Connected: ' + frame);
     stompClient.subscribe('/topic/greetings', function(greeting) {
       showGreeting(JSON.parse(greeting.body).content);
     });
   });
 }

 function disconnect() {
   if (stompClient != null) {
     stompClient.disconnect();
   }
   setConnected(false);
   console.log("Disconnected");
 }

 function sendName() {
   var name = document.getElementById('name').value;
   stompClient.send("/app/hello", {}, JSON.stringify({
     'name' : name
   }));
 }