Vue全局前置守卫验证登录状态

全局前置守卫验证登录状态

在login页

 methods: {
    login() {
      this.$axios
        .post("/api", {
          user: this.user,
          password: this.pass
        })
        .then(res => {
          if (res.data == 1) {
            this.$message({
              message: "登录成功",
              type: "success"
            });
//数据发到后台验证成功后，后台返回1存入本地localStorage,

            localStorage.setItem('token',res.data)//存入token,进行登录判断
            
            // console.log()
              this.$store.commit("initstoreLogin",{
                user: this.user,
                password: this.pass
              })
            
            this.$router.push("/");
            
          } else {
            this.$message({
              showClose: true,
              message: "用户名或密码错误",
              type: "error"
            });
          }
        });
    }
  }

在main.js下

/ 全局前置守卫
  router.beforeEach((to,from,next)=>{
    let token = localStorage.getItem("token")//验证登录状态
    if(token){//判断是否登录
      next()
    }
  
    else{
      if(to.path!=='/login'){
        alert("请先登录")
        next({path:'/login'})
      }
      else{
        next()
      }
    }
  })