fix: 修复账号切换后无提示的bug

src/App.vue

@@ -9,7 +9,9 @@ import request from './service/request.js';
 export default {
   name: 'App',
   data () {
-    return {};
+    return {
+      userId: '',
+    };
   },
   created () {
     this.getUserId();
@@ -20,8 +22,7 @@ export default {
     getUserId () {
       request.get('/api-auth/get-login-user-info').then(res => {
         if (res.data.errorCode === 0) {
-          const useId = res.data.result.userId;
-          localStorage.setItem('useId', useId);
+          this.useId = res.data.result.userId;
         } else {
           this.$message.error(res.data.message);
         }
@@ -34,8 +35,8 @@ export default {
           request.get('/api-auth/get-login-user-info').then(res => {
             if (res.data.errorCode === 0) {
               const useId = res.data.result && res.data.result.userId;
-              if (localStorage.getItem('useId') !== useId) {
-                localStorage.setItem('useId', useId);
+              if (this.userId !== useId) {
+                this.userId = useId;
                 // 串号
                 this.$confirm('当前登录账号已经发生变化，如果您在其他页面已经登录另一个账号，请重新登录！', '登录账号变更提示', {
                   confirmButtonText: '重新登录',