修复 退出登录失效问题

src/layout/default/index.vue

     }
   },
   created () {
-    // 默认进入欢迎语页面
-    this.$router.push({ name: 'indexWelcome' })
     // if (this.$route.path.indexOf('exception') === -1) {
     //   this.$store.dispatch('getUser').then(() => {
     //     this.menuArray = pageArray

src/store/system.js

   },
   mutations: {
     updateUser(state, user) {
-      state.user = {
-        ...state.user,
-        ...user,
-      }
+      // state.user = {
+      //   ...state.user,
+      //   ...user,
+      // }
+      state.user = user
     },
     syncState(state, payload = {}) {
       Object.keys(payload).forEach(k => state[k] = payload[k])

src/views/Login.vue

     submit() {
       this.login({ username: this.formdata.username, password: md5(this.formdata.password) }).then(() => {
         this.$router.push({ name: this.fromRoute })
+        // 默认进入欢迎语页面
+        this.$router.push({ name: 'indexWelcome' })
       }).catch((err) => {
         this.$message({
           showClose: true,