vue+CryptoJS+vuex+cookie实现登录7天密码记忆

两种方式

1.vuex方法写（复杂）

2.直接methods中写（简单）

下载依赖包

npm i crypto-js -S

第一种 （复杂）

Html

<div class="userFrom" v-if="!isSwitch">
   <el-input placeholder="用户名/手机/邮箱" v-model.trim="user.username" @keyup.enter.native="sigIn" class="user">
       <i slot="prefix" class="glyphicon glyphicon-user"></i>
   </el-input>
   <span v-show="usernameError" class="usernameSpan">* 请输入用户名</span>
   <el-input type="password" placeholder="请输入密码" v-model.trim="user.password" @keyup.enter.native="sigIn" class="password">
   <i slot="prefix" class="glyphicon glyphicon-lock"></i>
   <!-- <i slot="suffix" class="iconfont iconyanjing" @click="handleIconClick"></i> -->
   </el-input>
    <span v-show="passwordError" class="passwordSpan">* 请输入密码</span>
    <el-checkbox v-model="user.checked">记住密码</el-checkbox>
    <el-button type="primary" class="login-button" @click="sigIn">登录</el-button>
</div>
<div class="login-pass"><router-link to="/resetPassword" tag="span">忘记密码？</router-link></div>

vuex state模块

const state = {
	user:{
			username:'',
			password:'',
			checked:false,
			setDate:7,
		},
}

vuex mutation模块

import CryptoJS from "crypto-js";

	clearUser(state,data){
		state.user.username=''
		state.user.password = ''
	},
	 //设置cookie
	 setCookie(state,data) {
		var cipherPsw = CryptoJS.AES.encrypt(data.password,'secretkey').toString();
		var exdate = new Date(); //获取时间
		exdate.setTime(exdate.getTime() + 24 * 60 * 60 * 1000 * data.setDate); //保存的天数
		//字符串拼接cookie
		window.document.cookie = "userName" + "=" + data.username + ";path=/;expires=" + exdate.toGMTString();
		window.document.cookie = "userPwd" + "=" + cipherPsw + ";path=/;expires=" + exdate.toGMTString();
	},
	 //读取cookie
	 getCookie(state,data) {
		if (document.cookie.length > 0) {
			var arr = document.cookie.split('; '); //这里显示的格式需要切割一下自己可输出看下
			for (var i = 0; i < arr.length; i++) {
				var arr2 = arr[i].split('='); //再次切割
				//判断查找相对应的值
				if (arr2[0] == 'userName') {
					state.user.username = arr2[1]; //保存到保存数据的地方
					state.user.checked=true
				} else if (arr2[0] == 'userPwd') {
					var bytes = CryptoJS.AES.decrypt(arr2[1],'secretkey');
					state.user.password = bytes.toString(CryptoJS.enc.Utf8);;
				}
			}
		}
	},

vuex action模块

	//获取登录个人信息
	async loginInfoA ({commit,state, dispatch}) {
		await axios.post(接口)
		.then(response => {
		    //登录成功之后
			 //判断复选框是否被勾选 勾选则调用配置cookie方法
			 if (state.user.checked == true) {
				//传入账号名，密码，和保存天数3个参数
				commit('setCookie',state.user)
				 }else {
				//清空Cookie
				commit('setCookie',{password: "",username: "",setDate:-1})
				commit('clearUser')
			}
		});
	}, 

第二种（简单）

HTML
<div class="ms-login">
        <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="0px" class="demo-ruleForm">
            <el-form-item prop="username">
                <el-input v-model="ruleForm.username" placeholder="用户名"></el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input type="password" placeholder="密码" v-model="ruleForm.password" @keyup.enter.native="submitForm('ruleForm')"></el-input>
            </el-form-item>
            <!-- `checked` 为 true 或 false -->
            <el-checkbox v-model="checked">记住密码</el-checkbox>
            <br>
            <br>
            <div class="login-btn">
                <el-button type="primary" @click="submitForm('ruleForm')">登录</el-button>
            </div>
        </el-form>
    </div>

 //页面加载调用获取cookie值
    mounted() {
        this.getCookie();
    },
    methods: {
        submitForm(formName) {
                         const self = this;
                        //判断复选框是否被勾选 勾选则调用配置cookie方法
                        if (self.checked == true) {
                            console.log("checked == true");
                            //传入账号名，密码，和保存天数3个参数
                            self.setCookie(self.ruleForm.username, self.ruleForm.password, 7);
                        }else {
                          console.log("清空Cookie");
                          //清空Cookie
                          self.clearCookie();
                        }
                        
                        //与后端请求代码，本功能不需要与后台交互所以省略
                        
                        console.log("登陆成功");
                  
                });
            },
            //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 = "userPwd" + "=" + c_pwd + ";path=/;expires=" + exdate.toGMTString();
            },
            //读取cookie
            getCookie: function() {
                if (document.cookie.length > 0) {
                    var arr = document.cookie.split('; '); //这里显示的格式需要切割一下自己可输出看下
                    for (var i = 0; i < arr.length; i++) {
                        var arr2 = arr[i].split('='); //再次切割
                        //判断查找相对应的值
                        if (arr2[0] == 'userName') {
                            this.ruleForm.username = arr2[1]; //保存到保存数据的地方
                        } else if (arr2[0] == 'userPwd') {
                            this.ruleForm.password = arr2[1];
                        }
                    }
                }
            },
            //清除cookie
            clearCookie: function() {
                this.setCookie("", "", -1); //修改2值都为空，天数为负1天就好了
            }