在你登录的时候，获取到弱密码，然后将他存到vuex里面，在登录进去之后，index页面再去取，思路是这样的

一、vuex里面定义密码字段

我是直接在user.js里面写的

import { login, logout, getInfo } from '@/api/login'
import { getToken, setToken, removeToken } from '@/utils/auth'const user = {state: {passwordY: ''},mutations: {SET_PASSWORD: (state, passwordY) => {state.passwordY = passwordY},},actions: {Cun_PASSWORD({ commit },name){commit('SET_PASSWORD',name)},}
}export default user

 也可以新建一个哈都一样

二、登录的时候存输入的密码

利用this.$store.dispatch去存，Cun_PASSWORD这个就是我actions里面的方法，this.loginForm.password就是存入的密码

this.$store.dispatch('Cun_PASSWORD', this.loginForm.password)

 三、首页取密码并且做验证

在mouted里面是可以获取到存储到vuex里的密码this.$store.state.user.passwordY（user是我刚刚放到user.js里面了，根据你写的变哈）

  mounted() {this.mima(this.$store.state.user.passwordY)}

methods里面写验证方法 

  methods: {mima(value){if(!/[0-9]/.test(value)) {this.$refs.passwordModal.open()} else if (!/[a-z]/.test(value) || !/[A-Z]/.test(value)) {this.$refs.passwordModal.open()} else if (!/[^0-9a-zA-Z]/.test(value)) {this.$refs.passwordModal.open()} else if (value.length < 8 || value.length > 50) {this.$refs.passwordModal.open()}},},

 如果是不符合密码规则，就弹出来，下面是弹出层组件

四、弹出层组件

<template><el-dialogtitle="密码过期请修改密码":visible.sync="dialogVisible":close-on-click-modal="false":close-on-press-escape="false"><el-form :model="passwordForm" :rules="rules" ref="passwordFormRef" label-width="100px"><el-form-item label="旧密码" prop="oldPassword"><el-input type="password" v-model="passwordForm.oldPassword" autocomplete="off"  show-password></el-input></el-form-item><el-form-item label="新密码" prop="newPassword"><el-input type="password" v-model="passwordForm.newPassword" autocomplete="off"  show-password></el-input></el-form-item><el-form-item label="确认密码" prop="confirmPassword"><el-input type="password" v-model="passwordForm.confirmPassword" autocomplete="off"  show-password></el-input></el-form-item></el-form><span slot="footer" class="dialog-footer"><el-button type="primary" @click="confirmPassword">确 定</el-button></span></el-dialog></template><script>export default {data() {return {dialogVisible: false,passwordForm: {oldPassword: '',newPassword: '',confirmPassword: ''},rules: {oldPassword: [{ required: true, message: '请输入旧密码', trigger: 'blur' }],newPassword: [{ required: true, message: "新密码不能为空", trigger: "blur" },{ min: 8, max: 20, message: "长度在 8 到 20 个字符", trigger: "blur" },{ validator: this.equalToOldPassword, trigger: "blur" },{validator: (rule, value, callback) => {const regexPattern = /^(?![a-zA-Z]+$)(?![A-Z0-9]+$)(?![A-Z\W_!@#$%^&*`~()-+=]+$)(?![a-z0-9]+$)(?![a-z\W_!@#$%^&*`~()-+=]+$)(?![0-9\W_!@#$%^&*`~()-+=]+$)[a-zA-Z0-9\W_!@#$%^&*`~()-+=]*$/;             if (!regexPattern.test(value)) {callback(new Error("密码至少包含三种字符类型：小写字母、大写字母、数字和特殊字符"));} else {callback(); // 这里调用callback来表示验证通过}},trigger: "blur"}],confirmPassword: [{ required: true, message: '请确认新密码', trigger: 'blur' },{ validator: this.validateConfirmPassword, trigger: 'blur' }]}};},methods: {validateConfirmPassword(rule, value, callback) {if (value !== this.passwordForm.newPassword) {callback(new Error('两次输入密码不一致!'));} else {callback();}},equalToOldPassword (rule, value, callback)  {if (this.passwordForm.oldPassword == value) {callback(new Error("禁止重复使用上次旧密码"));} else {callback();}},confirmPassword() {// 验证表单this.$refs.passwordFormRef.validate((valid) => {if (valid) {// 调用修改密码的方法this.$parent.updatePassword(this.passwordForm)}});},open() {this.dialogVisible = true; // 假设你使用了Element UI的Dialog组件},}};</script><style scoped>::v-deep .el-dialog__headerbtn {display: none !important; /* 使用 !important 确保样式覆盖 */}</style>

在index里引用

  <PasswordModal ref="passwordModal" />

import PasswordModal from "@/components/PasswordModal/index.vue";components: {PasswordModal},

index里面加一个改密码的方法 

methods: {mima(value){if (value === "") {this.$message.warning("请输入密码");} else if (!/[0-9]/.test(value)) {this.$refs.passwordModal.open()} else if (!/[a-z]/.test(value) || !/[A-Z]/.test(value)) {this.$refs.passwordModal.open()} else if (!/[^0-9a-zA-Z]/.test(value)) {this.$refs.passwordModal.open()} else if (value.length < 8 || value.length > 50) {this.$refs.passwordModal.open()}},updatePassword(passwordForm) {
//这个接口是你自己修改密码的接口！记得改updateUserPwd(passwordForm.oldPassword, passwordForm.newPassword).then((response) => {this.$modal.msgSuccess("修改成功");this.$store.dispatch('LogOut').then(() => {location.href = '/index'})});},methods: {mima(value){if (value === "") {this.$message.warning("请输入密码");} else if (!/[0-9]/.test(value)) {this.$refs.passwordModal.open()} else if (!/[a-z]/.test(value) || !/[A-Z]/.test(value)) {this.$refs.passwordModal.open()} else if (!/[^0-9a-zA-Z]/.test(value)) {this.$refs.passwordModal.open()} else if (value.length < 8 || value.length > 50) {this.$refs.passwordModal.open()}},updatePassword(passwordForm) {updateUserPwd(passwordForm.oldPassword, passwordForm.newPassword).then((response) => {this.$modal.msgSuccess("修改成功");this.$store.dispatch('LogOut').then(() => {location.href = '/index'})});},