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Java의 websocket 메시지 푸시

高洛峰원래의: 2017-02-27 15:38:141965검색

1. 서비스 계층

package com.demo.websocket;
import java.io.IOException;
import java.util.Iterator;
import java.util.concurrent.ConcurrentLinkedQueue;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
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;
@Configuration
@EnableWebSocket
public class websocketListener implements WebSocketConfigurer, ServletContextListener{
  private ConcurrentLinkedQueue<WebSocketSession> sessions = new ConcurrentLinkedQueue<WebSocketSession>();
  private WebSocketHandlerTest handler;
  @Override
  public void contextDestroyed(ServletContextEvent arg0) {
    // TODO Auto-generated method stub
  }
  @Override
  public void contextInitialized(ServletContextEvent arg0) {
    // TODO Auto-generated method stub
  }
  @Override
  public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
    handler = new WebSocketHandlerTest();
    registry.addHandler(handler, "/ws/notifymessage.ws");
    registry.addHandler(handler, "/ws/sockjs/notifymessage.ws").withSockJS();
    new Thread(handler).start();
  }
  class WebSocketHandlerTest extends TextWebSocketHandler implements Runnable{
    @Override
    public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
      sessions.remove(session);
    }
    @Override
    public void afterConnectionEstablished(WebSocketSession session) throws Exception {
      sessions.add(session);
    }
    @Override
    protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
      super.handleTextMessage(session, message);
    }
    @Override
    public void run() {
      System.out.println("等待推送....");
      try {
        int i = 0;
        for (;;) {
          synchronized (this) {
            try {
              Thread.sleep(3000);
            } catch (InterruptedException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
            }
          }
          if(i%10==0){
            nofity("消息推送测试......");
            System.out.println("推送消息了....");
          }else{
            System.out.println("本次不推送消息了....");
          }
          i++;
        }
      } catch (IOException e) {
        e.printStackTrace();
        System.out.println("失败....");
      }
    }
    private void nofity(String message) throws IOException {
      Iterator<WebSocketSession> iterator = sessions.iterator();
      while (iterator.hasNext()) {
        WebSocketSession session = iterator.next();
        synchronized(session){
          if(session.isOpen()){
            session.sendMessage(new TextMessage(message));
          }else{
            iterator.remove();
          }
        }
      }
    }
  }
}

프론트엔드 인터페이스 모니터링

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
websocket测试界面
</body>
<script type="text/javascript">
var websocketPath = "localhost:8080/demo-web";
if (&#39;WebSocket&#39; in window) {
  websocket = new WebSocket("ws://"+websocketPath+"/ws/notifymessage.ws");
} else if (&#39;MozWebSocket&#39; in window) {
  websocket = new MozWebSocket("ws://"+websocketPath+"/ws/notifymessage.ws");
} else {
  websocket = new SockJS("ws://"+websocketPath+"/ws/notifymessage.ws");
}
websocket.onopen = function (evnt) {
};
websocket.onmessage = function (evnt) {
  console.log(evnt);
};
websocket.onerror = function (evnt) {
};
websocket.onclose = function (evnt) {
}
</script>
</html>

DispatcherServlet 컨트롤러는 web.xml

spring-servlet.xml 빈 파일

에 구성되어 있습니다.

<servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/spring-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>*.ws</url-pattern>
  </servlet-mapping>

위는 편집자가 소개한 Java의 websocket 메시지 푸시 구현 코드입니다. 궁금한 점이 있으면 남겨주세요. 나에게 메시지를 보내주세요. 편집자는 모든 사람에게 즉시 답변을 드릴 것입니다. 또한 PHP 중국어 웹사이트를 지원해 주신 모든 분들께 감사드립니다!

Java의 웹소켓 메시지 푸시와 관련된 더 많은 기사를 보려면 PHP 중국어 웹사이트를 주목하세요!

성명：

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