单点登录踢下线

virtual-patient-web/src/main/java/com/supervision/controller/UserController.java

@@ -56,5 +56,11 @@ public class UserController {
         redisTemplate.expire(UserTokenConstant.TOKEN_CACHE + user.getId(), 1000 * 5L, TimeUnit.MILLISECONDS);
     }
 
+    @ApiOperation("踢用户下线")
+    @GetMapping("kickUser")
+    public void kickUser(String userId) {
+        redisTemplate.convertAndSend(UserTokenConstant.KICK_CHANNEL, userId);
+    }
+
 
 }

virtual-patient-web/src/main/java/com/supervision/controller/WebSocketServer.java

@@ -1,16 +1,15 @@
 package com.supervision.controller;
 
+import cn.hutool.core.util.ObjectUtil;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
-import javax.websocket.OnClose;
+import javax.websocket.*;
-import javax.websocket.OnError;
-import javax.websocket.OnOpen;
-import javax.websocket.Session;
 import javax.websocket.server.PathParam;
 import javax.websocket.server.ServerEndpoint;
 import java.io.IOException;
-import java.util.concurrent.CopyOnWriteArraySet;
+import java.security.Principal;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicInteger;
 
 @Component
@@ -22,14 +21,14 @@ public class WebSocketServer {
     private static final AtomicInteger onlineNum = new AtomicInteger(0);
 
     //concurrent包的线程安全Set，用来存放每个客户端对应的WebSocketServer对象。
-    private static final CopyOnWriteArraySet<Session> SESSION_POOL = new CopyOnWriteArraySet<Session>();
+    private static final ConcurrentHashMap<String, Session> SESSION_POOL = new ConcurrentHashMap<>();
 
     /**
      * 有客户端连接成功
      */
     @OnOpen
     public void onOpen(Session session, @PathParam(value = "uid") String uid) {
-        SESSION_POOL.add(session);
+        SESSION_POOL.put(uid, session);
         onlineNum.incrementAndGet();
         log.info(uid + "加入webSocket！当前人数为" + onlineNum);
     }
@@ -38,8 +37,8 @@ public class WebSocketServer {
      * 连接关闭调用的方法
      */
     @OnClose
-    public void onClose(Session session) {
+    public void onClose(Session session, @PathParam(value = "uid") String uid) {
-        SESSION_POOL.remove(session);
+        SESSION_POOL.remove(uid);
         int cnt = onlineNum.decrementAndGet();
         log.info("有连接关闭，当前连接数为：{}", cnt);
     }
@@ -59,7 +58,7 @@ public class WebSocketServer {
      * 群发消息
      */
     public void broadCastInfo(String message) throws IOException {
-        for (Session session : SESSION_POOL) {
+        for (Session session : SESSION_POOL.values()) {
             if (session.isOpen()) {
                 sendMessage(session, message);
             }
@@ -76,7 +75,11 @@ public class WebSocketServer {
     }
 
     // 实现一个方法用于踢下线用户
-    public void kickUser(String userId) {
+    public void kickUser(String userId) throws IOException {
-        SESSION_POOL.removeIf(session -> session.getUserPrincipal().getName().equals(userId));
+        log.info("踢用户{}下线", userId);
+        Session session = SESSION_POOL.get(userId);
+        if (ObjectUtil.isNotEmpty(session)) {
+            session.close(new CloseReason(CloseReason.CloseCodes.NORMAL_CLOSURE, "用户被踢下线"));
+        }
     }
 }

virtual-patient-web/src/main/java/com/supervision/usermanage/KickUserListener.java

@@ -8,6 +8,8 @@ import org.springframework.data.redis.connection.Message;
 import org.springframework.data.redis.connection.MessageListener;
 import org.springframework.stereotype.Component;
 
+import java.io.IOException;
+
 
 @Slf4j
 @Component
@@ -20,6 +22,10 @@ public class KickUserListener implements MessageListener {
     public void onMessage(Message message, byte[] pattern) {
         String userId = message.toString();
         log.info("Redis的Channel:{}收到踢用户下线消息:{}", UserTokenConstant.KICK_CHANNEL, userId);
-        webSocketServer.kickUser(userId);
+        try {
+            webSocketServer.kickUser(userId);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
     }
 }