前端记住密码功能

本文作者：程序员飞云

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使用cookie来记住密码

1. 安装js-cookie依赖

"js-cookie": "^3.0.5"

2. 安装jsencrypt

存储用户密码，为了安全需要加密，获取密码需要解密

"jsencrypt": "^3.3.2"

3. 创建脚本

密钥对生成http://web.chacuo.net/netrsakeypair

import { JSEncrypt } from "jsencrypt";

// 密钥对生成http://web.chacuo.net/netrsakeypair
const publicKey =
  "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqjtN3wBrRUwGGijirOpW\n" +
  "sISg9Q6BlzagJGAYh9+0cgahL28NUFL6wHmagpURrsWsHZP8dt/9DOfFrqS+/R7f\n" +
  "VFyjclXH3XDDr4cP2+Wxgwn+PgJ3+TqkhHgdRzBQ4giCEGBJdsByUR8RN7iV+DQY\n" +
  "vLQrFrmZm5Jc/FcCqLUeNJW+kSvb75qtQV5hQq4O+BQN1TGoQPDGrN+02mxmNV0O\n" +
  "HI6U/iqTvPhDpHB6bM1jZUI7Jkeo8ySJblLmv/RtglPaV2TSDYiMWpFYy9VWmJcW\n" +
  "b0gAfUOK340negeFGUXK5Xt+jnJZ7VrVM5wIKP7ls7WPPW3yfwrx7L0Sc1w1stge\n" +
  "2QIDAQAB";

const privateKey =
  "MIIEwAIBADANBgkqhkiG9w0BAQEFAASCBKowggSmAgEAAoIBAQCqO03fAGtFTAYa\n" +
  "KOKs6lawhKD1DoGXNqAkYBiH37RyBqEvbw1QUvrAeZqClRGuxawdk/x23/0M58Wu\n" +
  "pL79Ht9UXKNyVcfdcMOvhw/b5bGDCf4+Anf5OqSEeB1HMFDiCIIQYEl2wHJRHxE3\n" +
  "uJX4NBi8tCsWuZmbklz8VwKotR40lb6RK9vvmq1BXmFCrg74FA3VMahA8Mas37Ta\n" +
  "bGY1XQ4cjpT+KpO8+EOkcHpszWNlQjsmR6jzJIluUua/9G2CU9pXZNINiIxakVjL\n" +
  "1VaYlxZvSAB9Q4rfjSd6B4UZRcrle36OclntWtUznAgo/uWztY89bfJ/CvHsvRJz\n" +
  "XDWy2B7ZAgMBAAECggEBAJmAUH++CPy7yOTd6UizJuiVL+7J3eFUyKMEZBphhn0r\n" +
  "rTzwjrjXmnTlMoZ9lSxb4w/o2cb3w19Xv9HzjKUCqa+QuXHoGAl+HXax+4L2ZFMd\n" +
  "N70CzNxYHPG2ve/riYPI2D+cE6KZdnvf3863C8R8dbHzZMdhJTo7iM2iSCuI5mvT\n" +
  "Ay3fPHvhgdkjDyOqr7jGJhrrgZvwr2piGYuPjpONGF42CfgqFNLybokxyD5JsT9d\n" +
  "j9pvPeh5Z78vlh9O3driFHCfEYKi/W8xlhRW8SgTshMlJUrYZyalhlZZ7N29PthZ\n" +
  "JgnKkrizm+XdqDPrEnM+J9ltPDPzWjgDXSxYRh8m9AECgYEA1NWgPPNe0e3JDkde\n" +
  "mFBpgwl/tafqSyxXd52YLduaLNW8kQb104y4geON99xeue+Siy2pfgdnpvxV8bd3\n" +
  "n1YIMdKKkeIfUUaJ4oxYiThfzVytK8svd7k7qtVY4/RlZZrrJqTEgoBFlAT42xyh\n" +
  "+94I+lNQQ/olZu0yZ+fAHaZB0KkCgYEAzMG8/rCxjnvdyZzmppGH0n5EjisoU4fx\n" +
  "H9NDfVYSZbcuKeLzIFXsOxEKooQn5cFyxDXBB5LQmkFejwMhA+qFDPk13tmALCHc\n" +
  "ZZ9SoytzBaw8ZIzwDyI+TQKHLXcslUyth8Jgik2xQO7mNUE7prbc4Mb0CT31dS9y\n" +
  "LU09roaWSrECgYEApV8f1HwdTux97lRSEfNZKHH3A0TnbWWUyOJw3iDl2LRyghVw\n" +
  "aOHMc1BGfTKDf+HAcdgW/E/wn/UtKlWt4uZME7pN5TBXuSUf+iGmoWhmOAEspPyJ\n" +
  "c3NAA2smWGkLaDlJQYuBDQ1yAqMiYc4LptJNE4Qst8Tjzue65LVTtzX5qZECgYEA\n" +
  "w3sTXHSEj2tiSuEos02tRiCWgsRhM55NbfzcKgTKe6FuyT6KrwxZA+s5I/7XuFn/\n" +
  "n6NSLlDUJvDRvedW1c5ISCKEc8ViwL9zEvIQiwcoQPo2jiif51Lh99O6CoYEYmVa\n" +
  "JopEcMXLvBpYXe9xa7CZH1/SDCDC/qXVc7qScNS9F4ECgYEAiCEJYYLb5fA8Avx8\n" +
  "1SIKF9/Yspc0twi+wvNVtQnLiA/xsnyQMgaMUl9PyV4IkyOiR7C82iy3q2iy7X3S\n" +
  "wv2b+vgiX0KogJb2uyTeuGj+rNo53zF96iDlLhM5Hwr7xjXLvUhbhQxQJSWS4+Fz\n" +
  "lUyPBMbw1c1PVs3WS7efadCNY5k=";

// 加密
export function encrypt(txt) {
  const jsEncrypt = new JSEncrypt();
  jsEncrypt.setPublicKey(publicKey);
  return jsEncrypt.encrypt(txt);
}

// 解密
export function decrypt(text) {
  const jsEncrypt = new JSEncrypt();
  jsEncrypt.setPrivateKey(privateKey);
  return jsEncrypt.decrypt(text);
}

4. 前端界面

<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">飞云定制旅游后台系统</h3>
      <el-form-item prop="username">
        <el-input
            v-model="loginForm.username"
            type="text"
            size="large"
            auto-complete="off"
            placeholder="账号"
            @keyup.enter="handleLogin"
        >
          <template #prefix>
            <svg-icon-index icon="user"/>
          </template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
            v-model="loginForm.password"
            type="password"
            size="large"
            auto-complete="off"
            placeholder="密码"
            @keyup.enter="handleLogin"
        >
          <template #prefix>
            <svg-icon-index icon="password"/>
          </template>
        </el-input>
      </el-form-item>

      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
            size="large"
            type="primary"
            style="width:100%;"
            @click="handleLogin"
        >
          <span>登 录</span>

        </el-button>
        <!--            @keyup.enter="handleLogin"-->
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <!--      <span></span>-->
    </div>
  </div>
</template>

<script setup>

import SvgIconIndex from "@/components/SvgIcon/SvgIconIndex.vue";
import {ref} from 'vue'
import requestUtil from '@/utils/request'
import store from "@/store";
import {ElMessage} from "element-plus";
import qs from "qs";
import router from "@/router";
import {decrypt, encrypt} from "@/utils/jsencrypt";
import Cookies from "js-cookie";

const loginRef = ref(null);
const loginForm = ref({
  username: "",
  password: "",
  rememberMe: false
})

const loginRules = {
  username: [{required: true, trigger: "blur", message: "请输入你的账号"}],
  password: [{required: true, trigger: "blur", message: "请输入你的密码"}],
};


const handleLogin = () => {
  loginRef.value.validate(async (valid) => {
      // 记住密码,30天
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), {
          expires: 30,
        });
        Cookies.set("rememberMe", loginForm.value.rememberMe, {
          expires: 30,
        });
      } else {
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
    if (valid) {
      let res = await requestUtil.post(
          "login?" +
          qs.stringify(loginForm.value)
      );

      if (res.data.code === 0) {
        store.commit('SET_TOKEN', res.data.data)
        console.log(res.data.data)
        ElMessage.success("登录成功")
        await router.replace("/")
      } else {
        ElMessage.error(res.data)
      }
    } else {
      console.log("error");
    }
  });
};

 // 获取cookie
function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password:
        password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
  };
}

getCookie();
</script>

<style lang="scss" scoped>
a {
  color: white
}

.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background: url("https://gw.alipayobjects.com/zos/rmsportal/FfdJeJRQWjEeGTpqgBKj.png") 0% 0% / 100% 100%;
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 40px;


    input {
      display: inline-block;
      height: 40px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }

}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 40px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial, cursive;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>