勉强解决

static/imservice.js

@@ -833,7 +833,16 @@ IMService.prototype.sendMessages = function (roomId, content) {
 
 //退出聊天室
 IMService.prototype.quitRoom = function (roomId) {
-    this.im.disconnect()
+    // this.im.subscribeGroup([0])
+    //     .then(result => {
+    //         console.log('消息订阅成功')
+    //     }).catch(e => {
+    //     console.log(e,'失败')
+    // })
+    // this.subscribePresence(0);
+    this.disconnect()
+    this.connectIM()
+
 };