diff --git a/src/renderer/src/api/classManage/index.js b/src/renderer/src/api/classManage/index.js
index 923c722..dc58160 100644
--- a/src/renderer/src/api/classManage/index.js
+++ b/src/renderer/src/api/classManage/index.js
@@ -173,3 +173,15 @@ export function endClass(id) {
     params: {id}
   })
 }
+/**
+ * @description 获取课堂信息
+ * @param {*} id 
+ * @returns 
+ */
+export function getClassInfo(id) {
+  return request({
+    url: '/smarttalk/classReserv/selectById',
+    method: 'get',
+    params: {id}
+  })
+}
diff --git a/src/renderer/src/plugins/imChat/index.js b/src/renderer/src/plugins/imChat/index.js
index 58a7841..4257f69 100644
--- a/src/renderer/src/plugins/imChat/index.js
+++ b/src/renderer/src/plugins/imChat/index.js
@@ -37,7 +37,7 @@ export class ImChat {
     // this.userSig = sig
     this.userID = userID
     window.test = this
-    this.timGroupId = '@TGS#3CYWMK2ON' // 测试使用
+    // this.timGroupId = '@TGS#3CYWMK2ON' // 测试使用
     if (isInit) return this.init()
   }
   // 设置配置
@@ -131,7 +131,6 @@ export class ImChat {
       } else {
         if (status == 1) { // 已登录
           console.log('已登录')
-          this.setGroupMsgReceive()
           resolve({status, msg:'已登录'})
         } else if (status == 2) { // 登录中
           console.log('登录中')
@@ -188,10 +187,10 @@ export class ImChat {
     return this.timChat.TIMGroupCreate(option).then(res => {
       if (res && res.code == 0) {
         const timGroupId = res?.json_param?.create_group_result_groupid
-        if (!!timGroupId){
+        if (!!timGroupId && timGroupId != 'undefined'){
           this.setConsole('%c创建群组成功', timGroupId)
           this.timGroupId = timGroupId
-          this.setGroupMsgReceive()
+          // this.setGroupMsgReceive()
         } 
       }
       return res
@@ -206,10 +205,12 @@ export class ImChat {
     })
   }
   // 设置群消息接收
-  setGroupMsgReceive() {
+  setGroupMsgReceive(timGroupId) {
+    if (!this.timGroupId) this.timGroupId = timGroupId || ''
+    if (!this.timGroupId) return console.log('timGroupId为空')
     return this.timChat.TIMMsgSetGroupReceiveMessageOpt({
       groupId: this.timGroupId,
-      opt: TYPES.TIMReceiveMessageOpt.kTIMRecvMsgOpt_Not_Notify,
+      opt: TYPES.TIMReceiveMessageOpt.kTIMRecvMsgOpt_Receive,
       data: '', // 用户自定义数据
     })
   }
@@ -225,6 +226,8 @@ export class ImChat {
   }
   // 发送消息
   sendMsg(conv_id, msg) {
+    if (!conv_id) return console.log('conv_id为空')
+    if (typeof msg == 'object') msg = JSON.stringify(msg)
     const option = {
       conv_id,
       conv_type: TYPES.TIMConvType.kTIMConv_Group,
@@ -240,12 +243,12 @@ export class ImChat {
       user_data: '', // 用户自定义数据
       // callback: (data) => {}
     }
+    console.log('发送消息', option)
     return this.timChat.TIMMsgSendMessageV2(option)
   }
   // 发送关闭(下课)消息
   sendMsgClosed(){
     const msg = this.getMsgObj(MsgEnum.HEADS.MSG_closed, '下课', MsgEnum.TYPES.TEACHER)
-    console.log('发送关闭消息', msg)
     return this.sendMsg(this.timGroupId, msg)
   }
   // 获取消息对象
diff --git a/src/renderer/src/views/tool/components/imChat.vue b/src/renderer/src/views/tool/components/imChat.vue
index 8e9ee59..12b098d 100644
--- a/src/renderer/src/views/tool/components/imChat.vue
+++ b/src/renderer/src/views/tool/components/imChat.vue
@@ -58,7 +58,6 @@ const initImChat = async () => {
 const createGroup = async (groupName) => {
   if (!imChatObj.imChat) return
   await imChatObj.imChat.createGroup(groupName)
-  // emits('change', {type:'createGroup', data: imChat.timGroupId})
   emits('change', 'createGroup', imChatObj.imChat.timGroupId)
 }
 // 退出
diff --git a/src/renderer/src/views/tool/sphere.vue b/src/renderer/src/views/tool/sphere.vue
index 6d0c637..7b018d9 100644
--- a/src/renderer/src/views/tool/sphere.vue
+++ b/src/renderer/src/views/tool/sphere.vue
@@ -39,7 +39,7 @@
 // 功能说明：electron 悬浮球
 import { onMounted, ref, reactive, watchEffect } from 'vue'
 import { useRoute } from 'vue-router';
-import { ElMessageBox, ElMessage } from 'element-plus'
+import { ElMessageBox, ElMessage, ElLoading } from 'element-plus'
 import * as classManageApi from '@/api/classManage'
 import logo from '@root/resources/icon.png'     // logo
 import boardVue from './components/board.vue'   // 画板-子组件
@@ -78,13 +78,26 @@ const btnList = [ // 工具栏按钮列表
 // === 页面加载完毕 ===
 onMounted(async() => {
   setTimeout(() => {
+    getClassInfo() // 获取课堂详情 ex3
     resetStatus() // 开启重置状态-监听
   }, 200);
 })
 
-
 // ==== 方法 ===
-// const test = (e) => { console.log('test', e) }
+// 获取课堂信息
+const getClassInfo = async () => {
+  const { data } = await classManageApi.getClassInfo(classObj.id)
+  classObj.data = data
+  if(!data.ex3 || data.ex3 == 'undefined') { // 无群直接创建
+    await imChatRef.value.imChatObj.imChat.createGroup(data.className)
+    const timGroupId = imChatRef.value.imChatObj.imChat.timGroupId
+    classManageApi.startClass(classObj.id, timGroupId) // 开始上课
+  } else { // 已创建群
+    // console.log('已创建群: ', data.ex3)
+    imChatRef.value.imChatObj.imChat.timGroupId = data.ex3
+    // imChatRef.value.imChatObj.imChat.setGroupMsgReceive(data.ex3)
+  }
+}
 // 切换tab-change
 const tabChange = (val) => {
   const bool = !toolStore.isPdfWin && !toolStore.showBoardAll
@@ -108,7 +121,8 @@ const mouseChange = (bool) => {
 // im-chat: 聊天事件 {type, data}
 const chatChange = (type, data) => {
   if (type == 'createGroup') {  // 创建群-监听
-    classManageApi.startClass(classObj.id, data)
+    console.log('创建群:', data)
+    !!data && classManageApi.startClass(classObj.id, data)
   } else if (type == 'msg') {   // im-chat 消息监听
     if (!data) return // 没有msg数据
     const { msgKey:head, msgcontent:msg, senduserid:sendId, msgType } = data
@@ -167,18 +181,19 @@ const sideChange = async o => {
       }).then(async() => {
         await imChatRef.value?.imChatObj?.imChat?.sendMsgClosed() // 发送下课消息
         // const elMsg = ElMessage.warning({duration:0,message:'正在下课...'})
-        // // 延迟2秒后关闭窗口，如果马上解散群，会导致群组不存在
-        // setTimeout(async() => {
-        //   elMsg.close()
-        //   toolStore.isToolWin = false
-        //   await classManageApi.endClass(route.query.reservId)
-        //   await imChatRef.value?.deleteGroup()  // 解散群
-        //   await imChatRef.value?.logout()       // 退出im
-        //   ipcMsgSend('tool-sphere:close')       // 关闭窗口
-        // }, 2000);
+        const elMsg = ElLoading.service({lock: true, text: '正在下课...', background: 'rgba(0, 0, 0, 0.7)'})
+        // 延迟2秒后关闭窗口，如果马上解散群，会导致群组不存在
+        setTimeout(async() => {
+          elMsg.close()
+          toolStore.isToolWin = false
+          await classManageApi.endClass(route.query.reservId)
+          await imChatRef.value?.deleteGroup()  // 解散群
+          await imChatRef.value?.logout()       // 退出im
+          ipcMsgSend('tool-sphere:close')       // 关闭窗口
+        }, 2000);
 
-        isOver.value = false
-        setIgnore(true) // 开启窗口鼠标-穿透
+        // isOver.value = false
+        // setIgnore(true) // 开启窗口鼠标-穿透
       }).catch(() => {
         isOver.value = false
         setIgnore(true) // 开启窗口鼠标-穿透