修改mqtt连接方式

src/utils/tableStore.ts

@@ -4,7 +4,7 @@ import { requestPayload } from '@/utils/request'
 import { Method } from 'axios'
 import { mainHeight } from '@/utils/layout'
 import { filtration } from './tableMethod'
-
+import { ElMessage } from 'element-plus'
 interface TableStoreParams {
     url: string // 请求地址
     pk?: string
@@ -183,6 +183,11 @@ export default class TableStore {
                 'export',
                 () => {
                     // this.index()
+                    ElMessage({
+                        message: '正在导出,请稍等...',
+                        type: 'info',
+                        duration: 1000
+                    })
                     let params = { ...this.table.params, pageNum: 1, pageSize: this.table.total }
                     createAxios(
                         Object.assign(