WebSocket Session为null

引入HttpSessionWSHelper类

/** * @program: * @description: 获取session * @author: Xzj * @create: 2021-01-20 15:05 **/
package com.pm.common.socket;

import javax.servlet.http.HttpSession;
import javax.websocket.HandshakeResponse;
import javax.websocket.server.HandshakeRequest;
import javax.websocket.server.ServerEndpointConfig;

public class HttpSessionWSHelper extends ServerEndpointConfig.Configurator {
    
    @Override
    public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response) {
    
        System.out.println("调用modifyHandshake方法...");
        HttpSession session = (HttpSession) request.getHttpSession();//session有可能为空
        if (session!=null){
    
            System.out.println("获取到session id:"+session.getId());
            sec.getUserProperties().put(HttpSession.class.getName(),session);
        }else{
    
            System.out.println("modifyHandshake 获取到null session");
        }
    }
}

WebSocket服务类中使用

在@ServerEndpoint(value = “/websocket/{name}”）中加入configurator = HttpSessionWSHelper.class

@Slf4j
@Component
@ServerEndpoint(value = "/websocket/{name}",configurator = HttpSessionWSHelper.class)
public class WebSocket {
    
}

SpringBoot_WebSocket_Java后台推送消息

SpringBoot_WebSocket_Java后台推送消息