本文实例讲述了vue路由守卫+登录态管理。分享给大家供大家参考，具体如下：
在路由文件需要守卫的path后面加上meta
{path: '/home',component: home,meta:{requireAuth:true}}
在main.js里面加上
//路由守卫
router.beforeEach((to, from, next) => {
console.log(to);
console.log(from);
if (to.meta.requireAuth) { // 判断该路由是否需要登录权限
if(JSON.parse(localStorage.getItem('islogin'))){ //判断本地是否存在access_token
next();
}else {
next({
path:'/login'
})
}
}
else {
next();
}
/*如果本地 存在 token 则 不允许直接跳转到 登录页面*/
if(to.fullPath == "/login"){
if(JSON.parse(localStorage.getItem('islogin'))){
next({
path:from.fullPath
});
}else {
next();
}
}
});
其中islogin是登录态，就是true or false，true表示登录，false表示未登录，存放在localStorage里面，因为localStorage里面只能存字符串，所以存进去的时候需要localStorage.setItem(‘islogin',JSON.stringify(islogin));将islogin变为String类型，取出来的时候需要将islogin转化为Boolean类型，就比如JSON.parse(localStorage.getItem(‘islogin'))这样。
那么还有一个问题，就是islogin登录态的管理，vue不能实时监测localStorage的变化，需要实时监测islogin的变化来在页面显示登录还是已经登录，我用的是vuex+localStorage来管理islogin。展示部分代码
//store.js中
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
export default new Vuex.Store({
state:{
//是否登录判断
islogin:''
},
mutations:{
login:(state,n) => {
//传入登录状态islogin
let islogin = JSON.parse(n);
localStorage.setItem('islogin',JSON.stringify(islogin));
console.log(islogin);
state.islogin = islogin;
}
}
}
在需要改变登录态的页面只要触发上面这个login方法就可以了
//这里是登录
login() {
let flag = true；
this.$store.commit('login',flag);
this.$router.push("/home");
console.log("登录成功");
}
//这里是退出登录
exit() {
let flag = false；
this.$store.commit('login',flag);
this.$router.push("/login");
console.log("退出登录");
}
登录注册部分样式参考的element-ui
登录注册
<template>
<div class="logReg">
<!-- 登录 -->
<div class="login" v-show="flag">
<div class="login-title">登录</div>
<el-form :model="ruleForm2" status-icon :rules="rules2" ref="ruleForm2" label-width="100px" class="login-ruleForm">
<el-form-item label="账号" prop="count2">
<el-input type="string" v-model="ruleForm2.count2" placeholder="请输入您的账号"></el-input>
</el-form-item>
<el-form-item label="密码" prop="pass2">
<el-input type="password" v-model="ruleForm2.pass2" autocomplete="off" placeholder="请输入您的密码"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="submitForm2('ruleForm2')">提交</el-button>
<el-button @click="resetForm2('ruleForm2')">重置</el-button>
</el-form-item>
</el-form>
<div @click="register()" class="toregister" >没有账号？<span>立即注册</span></div>
</div>
<!-- 注册 -->
<div class="register" v-show="!flag">
<div class="register-title">注册</div>
<el-form :model="ruleForm1" status-icon :rules="rules1" ref="ruleForm1" label-width="100px" class="register-ruleForm">
<el-form-item label="账号" prop="count1">
<el-input type="string" v-model="ruleForm1.count1" placeholder="请输入您的账号"></el-input>
</el-form-item>
<el-form-item label="密码" prop="pass1">
<el-input type="password" v-model="ruleForm1.pass1" autocomplete="off" placeholder="请输入您的密码"></el-input>
</el-form-item>
<el-form-item label="确认密码" prop="checkPass">
<el-input type="password" v-model="ruleForm1.checkPass" autocomplete="off" placeholder="请确认您的密码"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="submitForm1('ruleForm1')">提交</el-button>
<el-button @click="resetForm1('ruleForm1')">重置</el-button>
</el-form-item>
</el-form>
<div @click="register()" class="toregister" >已有账号？<span>立即登录</span></div>
</div>
</div>
</template>
<script>
export default{
name:'logReg',
data() {
//登录账号验证
var validateCount2 = (rule, value, callback) => {
if (value === '') {
callback(new Error('请输入账号'));
} else {
if (value != "admin") {
callback(new Error('账号不存在'));
}
//向后台请求验证账号是否存在
callback();
}
};
//登录密码验证
var validatePass2 = (rule, value, callback) => {
if (value === '') {
callback(new Error('请输入密码'));
} else {
if (value != "admin") {
callback(new Error('密码不正确'));
}
//向后台验证，也可以不处理
callback();
}
};
//注册账号验证
var validateCount1 = (rule, value, callback) => {
if (value === '') {
callback(new Error('请输入账号'));
} else {
//向后台请求验证账号是否重复
callback();
}
};
//注册密码验证
var validatePass1 = (rule, value, callback) => {
if (value === '') {
callback(new Error('请输入密码'));
} else {
if (this.ruleForm1.checkPass !== '') {
this.$refs.ruleForm1.validateField('checkPass');
}
callback();
}
};
//注册密码确认
var validatePassCheck = (rule, value, callback) => {
if (value === '') {
callback(new Error('请再次输入密码'));
} else if (value !== this.ruleForm1.pass1) {
callback(new Error('两次输入密码不一致!'));
} else {
callback();
}
};
return {
flag:true,//登录注册切换
//登录账号密码
ruleForm2: {
pass2: '',
count2:''
},
//登录验证
rules2: {
count2: [
{ validator: validateCount2, trigger: 'blur' }
],
pass2:[
{ validator: validatePass2, trigger: 'blur' }
]
},
ruleForm1: {
count1: '',
pass1: '',
checkPass: ''
},
rules1: {
count1: [
{ validator: validateCount1, trigger: 'blur' }
],
pass1:[
{ validator: validatePass1, trigger: 'blur' }
],
checkPass: [
{ validator: validatePassCheck, trigger: 'blur' }
]
},
};
},
methods: {
//登录提交
submitForm2(formName) {
this.$refs[formName].validate((valid) => {
if (valid) {
console.log("提交成功");
//提交成功之后操作
let flag = true;
this.$store.commit("login",flag);
this.$router.push('/home');
this.$message({
message: '恭喜，登录成功',
type: 'success'
});
} else {
this.$message({
message: '抱歉，登录失败',
type: 'warning'
});
return false;
}
});
},
//登录框重置
resetForm2(formName) {
this.$refs[formName].resetFields();
},
//注册提交
submitForm1(formName) {
this.$refs[formName].validate((valid) => {
if (valid) {
this.$message({
message: '恭喜，注册成功，请登录',
type: 'success'
});
this.flag = !this.flag;
} else {
this.$message({
message: '抱歉，注册失败',
type: 'warning'
});
return false;
}
});
},
//注册框重置
resetForm1(formName) {
this.$refs[formName].resetFields();
},
//切换登录注册
register() {
this.flag = !this.flag;
}
},
}
</script>
<style scoped>
.el-button--primary {
color: #fff;
background-color: rgba(254, 112, 26, 0.8);
border-color: rgba(254, 112, 26, 0.9);
}
.el-button:focus{
color: #333;
background-color: rgba(255, 255, 255, 0.1);
border-color: #dcdfe6;
}
.el-button:hover{
color: rgba(254, 112, 26, 1);
background-color: rgba(255, 255, 255, 0.1);
border-color: rgba(254, 112, 26, 0.9);
}
.el-button--primary:hover {
color: #fff;
background-color: rgba(254, 112, 26, 0.8);
border-color: rgba(254, 112, 26, 0.9);
}
.el-button--primary:focus {
color: #fff;
background-color: rgba(254, 112, 26, 0.8);
border-color: rgba(254, 112, 26, 0.9);
}
.register,
.login{
margin-top: 100px;
margin-bottom: 100px;
padding: 40px 0px 40px 0;
background-color: #fff;
width: 600px;
margin: 100px auto;
border-radius: 8px;
box-shadow: 0px 0px 100px rgba(0,0,0,.1);
}
.register .register-title,
.login .login-title{
font-size: 1.65rem;
line-height: 60px;
font-weight: bold;
white-space: nowrap;
margin-bottom: 16px;
color: #555;
/* color: rgba(254, 112, 26, 0.8);*/
}
.register-ruleForm,
.login-ruleForm{
width: 500px;
margin: 0 auto;
padding: 0px 100px 0px 0;
}
.login .toregister{
cursor: pointer;
}
/*注册*/
</style>
希望本文所述对大家vue.js程序设计有所帮助。