Vue+element+cookie實現記住密碼功能

實現功能：

1、登入時勾選記住密碼，用cookie儲存賬號和密碼並對密碼進行兩次加密處理（純前端），下次登入自動輸入賬號密碼
2、登入時不勾選，清空cookie，下次登入需要輸入

效果圖：

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

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: '使用者名稱不能為空'}
                      ]">
                          <span><i class="el-icon-user"></i></span><el-input type="username" v-model.number="ValidateForm.username" autocomplete="off" clearable placeholder="使用者名稱"></el-input>
                      </el-form-item>
                      <br>
                      <el-form-item

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

                              prop="sidentify"
                              :rules="[
{ required: true, message: '驗證碼不能為空'},]"
                      >
                          <el-row class="sidentify">
                              <el-col :span="21">
                                  <el-input type="age" v-model="ValidateForm.sidentify" autocomplete="off" placeholder="驗證碼"></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">記住密碼</el-checkbox>
                      </el-form-item>
                      <el-form-item>
                          <el-button type="primary" @click="submitForm('ValidateForm')" class="login-btn">登入</el-button>
                      </el-form-item>
                  </el-form>
              </div>

加密方法我用的base64和CryptoJS 大家記得去下載

js部分：

登入

// 登入
submitForm(formName) {
    this.$refs[formName].validate((valid) => {
        if (valid) {
            let username=this.ValidateForm.username;
            let pwd=this.ValidateForm.password;
            let sidentify=this.ValidateForm.sidentify;
            // 驗證碼通過
            if (sidentify == this.identifyCode){
                this.request.post(this.api.login.logindo,{username:username,pwd:pwd}).then((res)=>{
                    console.log(res);
                    if (res.data.code == 200){
                        this.$message({
                            message : '登入成功！',
                            type : 'success'
                        })
                        //呼叫check選中方法
                        this.checkedPwd(username,pwd)
                        this.$router.push({name:'Home'})
                    }else {
                        this.$message({
                            message : '賬號或密碼錯誤，請重新輸入！',
                            type : 'error'
                        })
                        //清空
                        this.resetForm('ValidateForm')
                        //重新整理驗證碼
                        this.$refs.switchSidentify.changeCode()
                    }
                })
            }else {
                this.$message({
                    message : '驗證碼輸入錯誤，請重新輸入！',
                    type : 'error'
                })
                this.$refs.switchSidentify.changeCode()
                this.resetForm('ValidateForm')
            }
        } else {
            return false;
        }
    });
},

check方法：

checkedPwd(username,pwd){
    // 記住密碼進行cookie儲存和密碼加密
    if (this.checked){
        // base64 加密
        let base64Pwd=Base64.encode(pwd);
        // Encrypt 加密
        let cryptoJsPwd=CryptoJS.AES.encrypt(base64Pwd,key).toString()
        // 賬號密碼儲存天數
        this.setCookie(username,cryptoJsPwd,7)
    }else{
        // 清空
        this.clearCookie()
    }
},

設定讀取和清空cookie

// 設定cookie
setCookie(c_name, c_pwd, exdays) {
    var exdate = new Date(); // 獲取時間
    exdate.setTime(exdate.getTime() + 24 * 60 * 60 * 1000 * exdays); // 儲存的天數
    // 字串拼接cookie
    window.document.cookie = "username" + "=" + c_name + ";path=/;expires=" + exdate.toGMTString();
    window.document.cookie = "password" + "=" + c_pwd + ";path=/;expires=" + exdate.toGMTString();
},
// 讀取cookie
getCookie: function() {
    if (document.cookie.length > 0) {
        //checked為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值都為空，天數為負1天就好了
},

一定要建立後讀取cookie

created () {
   this.getCookie()
},