spring websocket做客户端服务器

浅浅的花香味﹌ 2022-05-15 08:47 239阅读 0赞

<dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-websocket</artifactId>
        <version>5.0.8.RELEASE</version>
    </dependency>

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.http.server.ServerHttpRequest;
    import org.springframework.http.server.ServerHttpResponse;
    import org.springframework.http.server.ServletServerHttpRequest;
    import org.springframework.stereotype.Component;
    import org.springframework.web.socket.TextMessage;
    import org.springframework.web.socket.WebSocketHandler;
    import org.springframework.web.socket.WebSocketSession;
    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 org.springframework.web.socket.handler.TextWebSocketHandler;
    import org.springframework.web.socket.server.HandshakeInterceptor;
    
    import java.util.Map;
    
    @SpringBootApplication
    public class MyWebSocketServer {
      public static void main(String[] args) {
        SpringApplication.run(MyWebSocketServer.class, args);
      }
    
      @Component
      @EnableWebSocket
      private static class Config implements WebSocketConfigurer {
        @Override
        public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
          registry.addHandler(new MyHandler(), "/ws").setAllowedOrigins("*")
              .addInterceptors(new MyHandshakeInterceptor());
        }
      }
    
      private static class MyHandler extends TextWebSocketHandler {
        @Override
        public void afterConnectionEstablished(WebSocketSession session) throws Exception {
          System.out.println(session.getAttributes().get("collector"));
          super.afterConnectionEstablished(session);
        }
    
        @Override
        protected void handleTextMessage(WebSocketSession session, TextMessage message)
            throws Exception {
          System.out.println(message.getPayload());
          session.sendMessage(new TextMessage("reply.................." + message.getPayload()));
          super.handleTextMessage(session, message);
        }
      }
    
      private static class MyHandshakeInterceptor implements HandshakeInterceptor {
        @Override
        public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response,
                                       WebSocketHandler wsHandler, Map<String, Object> attributes)
            throws Exception {
    
          String collector = ((ServletServerHttpRequest) request).getServletRequest().getParameter("collector");
          if (Strings.isNullOrEmpty(collector)) {
            return false;
          } else {
            attributes.put("collector", collector);
            return true;
          }
        }
    
        @Override
        public void afterHandshake(ServerHttpRequest request, ServerHttpResponse response,
                                   WebSocketHandler wsHandler, Exception exception) {
    
        }
      }
    }

客户端：

import org.springframework.web.socket.TextMessage;
    import org.springframework.web.socket.WebSocketSession;
    import org.springframework.web.socket.client.WebSocketConnectionManager;
    import org.springframework.web.socket.client.standard.StandardWebSocketClient;
    import org.springframework.web.socket.handler.TextWebSocketHandler;
    
    import java.io.IOException;
    
    public class MyWebSocketClient {
      private static final String WS_URI = "ws://localhost:8080/ws?collector=123";
    
      public static void main(String[] args) throws IOException, InterruptedException {
        StandardWebSocketClient client = new StandardWebSocketClient();
        WebSocketConnectionManager manager = new WebSocketConnectionManager(client, new MyHandler(), WS_URI);
    
        manager.start();
    
        Thread.sleep(10000);
      }
    
      private static class MyHandler extends TextWebSocketHandler {
        @Override
        public void afterConnectionEstablished(WebSocketSession session) throws Exception {
          System.out.println("connected...........");
          session.sendMessage(new TextMessage("hello, web socket"));
          super.afterConnectionEstablished(session);
        }
    
        @Override
        protected void handleTextMessage(WebSocketSession session, TextMessage message)
            throws Exception {
          System.out.println("receive: " + message.getPayload());
          super.handleTextMessage(session, message);
        }
      }
    }