Vue+element+cookie记住密码功能的简单实现方法

实现功能：

1、登录时勾选记住密码，用cookie保存账号和密码并对密码进行两次加密处理（纯前端），下次登录自动输入账号密码

2、登录时不勾选，清空cookie，下次登录需要输入

效果图：

=============================================================================================================================================================================================

Html

 <div class="login-form-item">
     <el-form :model="ValidateForm" ref="ValidateForm" label-width="100px" class="demo-ruleForm">
      <el-form-item

        prop="username"
        :rules="[{ required: true, message: '用户名不能为空'}
      ]">
       <span><i class="el-icon-user"></i></span><el-input type="username" v-model.number="ValidateForm.username" autocomplete="off" clearable placeholder="用户名"></el-input>
      </el-form-item>
      <br>
      <el-form-item

        prop="password"
        :rules="[{ required: true, message: '密码不能为空'},
      ]">
       <span><i class="el-icon-lock"></i></span><el-input type="password" v-model.number="ValidateForm.password" autocomplete="off" clearable show-password placeholder="密码"></el-input>
      </el-form-item>
      <br>
      <el-form-item

        prop="sidentify"
        :rules="[
{ required: true, message: '验证码不能为空'},]"
      >
       <el-row class="sidentify">
        <el-col :span="21">
         <el-input type="age" v-model="ValidateForm.sidentify" autocomplete="off" placeholder="验证码"></el-input>
        </el-col>
        <el-col :span="3" class="sidentify sidentify-img">
         <sidentify :changeCode.sync='identifyCode' ref="switchSidentify"></sidentify>
        </el-col>
       </el-row>
      </el-form-item>
      <el-form-item>
       <el-checkbox v-model="checked" class="sidentify">记住密码</el-checkbox>
      </el-form-item>
      <el-form-item>
       <el-button type="primary" @click="submitForm('ValidateForm')" class="login-btn">登录</el-button>
      </el-form-item>
     </el-form>
    </div>

加密方法我用的base64和CryptoJS 大家记得去下载

js部分：

登录

// 登录
submitForm(formName) {
 this.$refs[formName].validate((valid) => {
  if (valid) {
   let username=this.ValidateForm.username;
   let pwd=this.ValidateForm.password;
   let sidentify=this.ValidateForm.sidentify;
   // 验证码通过
   if (sidentify == this.identifyCode){
    this.request.post(this.api.login.logindo,{username:username,pwd:pwd}).then((res)=>{
     console.log(res);
     if (res.data.code == 200){
      this.$message({
       message : '登录成功！',
       type : 'success'
      })
      //调用check选中方法
      this.checkedPwd(username,pwd)
      this.$router.push({name:'Home'})
     }else {
      this.$message({
       message : '账号或密码错误，请重新输入！',
       type : 'error'
      })
      //清空
      this.resetForm('ValidateForm')
      //刷新验证码
      this.$refs.switchSidentify.changeCode()
     }
    })
   }else {
    this.$message({
     message : '验证码输入错误，请重新输入！',
     type : 'error'
    })
    this.$refs.switchSidentify.changeCode()
    this.resetForm('ValidateForm')
   }
  } else {
   return false;
  }
 });
},

check方法：

checkedPwd(username,pwd){
 // 记住密码进行cookie存储和密码加密
 if (this.checked){
  // base64 加密
  let base64Pwd=Base64.encode(pwd);
  // Encrypt 加密
  let cryptoJsPwd=CryptoJS.AES.encrypt(base64Pwd,key).toString()
  // 账号密码保存天数
  this.setCookie(username,cryptoJsPwd,7)
 }else{
  // 清空
  this.clearCookie()
 }
},

设置读取和清空cookie

// 设置cookie
setCookie(c_name, c_pwd, exdays) {
 var exdate = new Date(); // 获取时间
 exdate.setTime(exdate.getTime() + 24 * 60 * 60 * 1000 * exdays); // 保存的天数
 // 字符串拼接cookie
 window.document.cookie = "username" + "=" + c_name + ";path=/;expires=" + exdate.toGMTString();
 window.document.cookie = "password" + "=" + c_pwd + ";path=/;expires=" + exdate.toGMTString();
},
// 读取cookie
getCookie: function() {
 if (document.cookie.length > 0) {
  //checked为true
  this.checked=true
  var arr = document.cookie.split('; ');
  for (var i = 0; i < arr.length; i++) {
   var arr2 = arr[i].split('=');
   if (arr2[0] == 'username') {
    this.ValidateForm.username = arr2[1];
   } else if (arr2[0] == 'password') {
    // Decrypt 解密
    let bytes = CryptoJS.AES.decrypt(arr2[1],key)
    let originalText=bytes.toString(CryptoJS.enc.Utf8)
    // base64解密
    let pwd=Base64.decode(originalText)
    this.ValidateForm.password = pwd;
   }
  }
 }
},
// 清除cookie
clearCookie: function() {
 this.setCookie("", "", -1); // 修改2值都为空，天数为负1天就好了
},

一定要创建后读取cookie

created () {
 this.getCookie()
},

总结

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