一、用户登录
- 登录组件的布局要点，如下所示：
el-form 容器，包含 username 和 password 两个 el-form-item，el-form 主要属性，model 为 loginForm，rules 为 loginRulespassword 使用了 el-tooltip 提示，当用户打开大小写时，会进行提示，主要属性，manual 是手动控制模式，设置为 true 后， mouseenter 和 mouseleave 事件将不会生效。placement 是提示出现的位置。password 对应的 el-input，主要的属性，@keyup 和 .native 修饰符，键盘按键时绑定 checkCapslock 事件，监听键盘 enter 按下后的事件- 包含一个
el-button，点击时调用 handleLogin 方法，并触发 loading 效果
checkCapslock 方法的主要作用，监听用户键盘输入，显示提示文字的判断逻辑是，按住 shift 时输入小写字符，未按 shift 时输入大写字符。当按下 Capslock 按键时，如果按下后是小写模式，则会立即消除提示文字，代码如下所示：
checkCapslock(e) {
const {
key } = e
this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
}
handleLogin 方法主要的作用是登录，流程如下所示：
- 调用
el-form 的 validate 方法对 rules 进行验证
- 如何验证通过，则调用
vuex 的 user/login action 进行登录验证
- 登录验证通过后，则会重定向到
redirect 路由，如果 redirect 路由不存在，则直接重定向到 / 路由
- 由于
vuex 中的 user 指定了 namespaced 为 true，所以 dispatch 时需要加上 namespace，否则无法调用 vuex 中的 action
handleLogin，代码如下所示：
login({
commit }, userInfo) {
const {
username, password } = userInfo
return new Promise((resolve, reject) => {
login({
username: username.trim(), password: password }).then(response => {
const {
data } = response
commit('SET_TOKEN', data.token)
setToken(data.token)
resolve()
}).catch(error => {
reject(error)
})
})
}
user/login 方法，调用了 loginAPI，传入 username 和 password 参数，请求成功后会从 response 中获取 token，然后将 token 保存到 Cookie 中，之后返回。如果请求失败，将调用 reject 方法，交由自定义的 request 模块来处理异常。
二、用户登录的完整实现
login.vue，代码如下所示：
<template>
<div class="login-container">
<el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" autocomplete="on" label-position="left">
<div class="title-container">
<h3 class="title">系统</h3>
</div>
<el-form-item prop="username">
<span class="svg-container">
<svg-icon icon-class="user" />
</span>
<el-input
ref="username"
v-model="loginForm.username"
placeholder="用户名"
name="username"
type="text"
tabindex="1"
autocomplete="on"
/>
</el-form-item>
<el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
<el-form-item prop="password">
<span class="svg-container">
<svg-icon icon-class="password" />
</span>
<el-input
:key="passwordType"
ref="password"
v-model="loginForm.password"
:type="passwordType"
placeholder="密码"
name="password"
tabindex="2"
autocomplete="on"
@keyup.native="checkCapslock"
@blur="capsTooltip = false"
@keyup.enter.native="handleLogin"
/>
<span class="show-pwd" @click="showPwd">
<svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
</span>
</el-form-item>
</el-tooltip>
<el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" @click.native.prevent="handleLogin">登录</el-button>
</el-form>
</div>
</template>
<script>
import {
validUsername } from '@/utils/validate'
export default {
name: 'Login',
components: {
},
data() {
const validateUsername = (rule, value, callback) => {
if (!validUsername(value)) {
callback(new Error('请输入正确的用户名'))
} else {
callback()
}
}
const validatePassword = (rule, value, callback) => {
if (value.length < 6) {
callback(new Error('请输入正确的密码，不能少于6位'))
} else {
callback()
}
}
return {
loginForm: {
username: 'admin',
password: '111111'
},
loginRules: {
username: [{
required: true, trigger: 'blur', validator: validateUsername }],
password: [{
required: true, trigger: 'blur', validator: validatePassword }]
},
passwordType: 'password',
capsTooltip: false,
loading: false,
showDialog: false,
redirect: undefined,
otherQuery: {
}
}
},
watch: {
$route: {
handler: function(route) {
const query = route.query
if (query) {
this.redirect = query.redirect
this.otherQuery = this.getOtherQuery(query)
}
},
immediate: true
}
},
mounted() {
if (this.loginForm.username === '') {
this.$refs.username.focus()
} else if (this.loginForm.password === '') {
this.$refs.password.focus()
}
},
methods: {
checkCapslock(e) {
const {
key } = e
this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
},
showPwd() {
if (this.passwordType === 'password') {
this.passwordType = ''
} else {
this.passwordType = 'password'
}
this.$nextTick(() => {
this.$refs.password.focus()
})
},
handleLogin() {
this.$refs.loginForm.validate(valid => {
if (valid) {
this.loading = true
this.$store.dispatch('user/login', this.loginForm)
.then(() => {
this.$router.push({
path: this.redirect || '/', query: this.otherQuery })
this.loading = false
})
.catch(() => {
this.loading = false
})
} else {
console.log('error submit!!')
return false
}
})
},
getOtherQuery(query) {
return Object.keys(query).reduce((acc, cur) => {
if (cur !== 'redirect') {
acc[cur] = query[cur]
}
return acc
}, {
})
}
}
}
</script>
<style lang="scss">
$bg:#283443;
$light_gray:#fff;
$cursor: #fff;
@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
.login-container .el-input input {
color: $cursor;
}
}
.login-container {
.el-input {
display: inline-block;
height: 47px;
width: 85%;
input {
background: transparent;
border: 0px;
-webkit-appearance: none;
border-radius: 0px;
padding: 12px 5px 12px 15px;
color: $light_gray;
height: 47px;
caret-color: $cursor;
&:-webkit-autofill {
box-shadow: 0 0 0px 1000px $bg inset !important;
-webkit-text-fill-color: $cursor !important;
}
}
}
.el-form-item {
border: 1px solid rgba(255, 255, 255, 0.1);
background: rgba(0, 0, 0, 0.1);
border-radius: 5px;
color: #454545;
}
}
</style>
<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;
.login-container {
min-height: 100%;
width: 100%;
background-color: $bg;
overflow: hidden;
.login-form {
position: relative;
width: 520px;
max-width: 100%;
padding: 160px 35px 0;
margin: 0 auto;
overflow: hidden;
}
.tips {
font-size: 14px;
color: #fff;
margin-bottom: 10px;
span {
&:first-of-type {
margin-right: 16px;
}
}
}
.svg-container {
padding: 6px 5px 6px 15px;
color: $dark_gray;
vertical-align: middle;
width: 30px;
display: inline-block;
}
.title-container {
position: relative;
.title {
font-size: 26px;
color: $light_gray;
margin: 0px auto 40px auto;
text-align: center;
font-weight: bold;
}
}
.show-pwd {
position: absolute;
right: 10px;
top: 7px;
font-size: 16px;
color: $dark_gray;
cursor: pointer;
user-select: none;
}
.thirdparty-button {
position: absolute;
right: 0;
bottom: 6px;
}
@media only screen and (max-width: 470px) {
.thirdparty-button {
display: none;
}
}
}
</style>
store 中的 user.js，代码如下所示：
import {
login, logout, getInfo } from '@/api/user'
import {
getToken, setToken, removeToken } from '@/utils/auth'
import router, {
resetRouter } from '@/router'
const state = {
token: getToken(),
name: '',
avatar: '',
introduction: '',
roles: []
}
const mutations = {
SET_TOKEN: (state, token) => {
state.token = token
},
SET_INTRODUCTION: (state, introduction) => {
state.introduction = introduction
},
SET_NAME: (state, name) => {
state.name = name
},
SET_AVATAR: (state, avatar) => {
state.avatar = avatar
},
SET_ROLES: (state, roles) => {
state.roles = roles
}
}
const actions = {
login({
commit }, userInfo) {
const {
username, password } = userInfo
return new Promise((resolve, reject) => {
login({
username: username.trim(), password: password }).then(response => {
const {
data } = response
commit('SET_TOKEN', data.token)
setToken(data.token)
resolve()
}).catch(error => {
reject(error)
})
})
},
getInfo({
commit, state }) {
return new Promise((resolve, reject) => {
getInfo(state.token).then(response => {
const {
data } = response
if (!data) {
reject('Verification failed, please Login again.')
}
const {
roles, name, avatar, introduction } = data
if (!roles || roles.length <= 0) {
reject('getInfo: roles must be a non-null array!')
}
commit('SET_ROLES', roles)
commit('SET_NAME', name)
commit('SET_AVATAR', avatar)
commit('SET_INTRODUCTION', introduction)
resolve(data)
}).catch(error => {
reject(error)
})
})
},
logout({
commit, state, dispatch }) {
return new Promise((resolve, reject) => {
logout(state.token).then(() => {
commit('SET_TOKEN', '')
commit('SET_ROLES', [])
removeToken()
resetRouter()
dispatch('tagsView/delAllViews', null, {
root: true })
resolve()
}).catch(error => {
reject(error)
})
})
},
resetToken({
commit }) {
return new Promise(resolve => {
commit('SET_TOKEN', '')
commit('SET_ROLES', [])
removeToken()
resolve()
})
},
async changeRoles({
commit, dispatch }, role) {
const token = role + '-token'
commit('SET_TOKEN', token)
setToken(token)
const {
roles } = await dispatch('getInfo')
resetRouter()
const accessRoutes = await dispatch('permission/generateRoutes', roles, {
root: true })
router.addRoutes(accessRoutes)
dispatch('tagsView/delAllViews', null, {
root: true })
}
}
export default {
namespaced: true,
state,
mutations,
actions
}
api 下的 user.js，代码如下所示：
import request from '@/utils/request'
export function login(data) {
return request({
url: '/vue-element-admin/user/login',
method: 'post',
data
})
}
export function getInfo(token) {
return request({
url: '/vue-element-admin/user/info',
method: 'get',
params: {
token }
})
}
export function logout() {
return request({
url: '/vue-element-admin/user/logout',
method: 'post'
})
}
utils 下的 request.js，代码如下所示：
import axios from 'axios'
import {
MessageBox, Message } from 'element-ui'
import store from '@/store'
import {
getToken } from '@/utils/auth'
const service = axios.create({
baseURL: process.env.VUE_APP_BASE_API,
timeout: 5000
})
service.interceptors.request.use(
config => {
if (store.getters.token) {
config.headers['X-Token'] = getToken()
}
return config
},
error => {
console.log(error)
return Promise.reject(error)
}
)
service.interceptors.response.use(
response => {
const res = response.data
if (res.code !== 20000) {
Message({
message: res.message || 'Error',
type: 'error',
duration: 5 * 1000
})
if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
confirmButtonText: 'Re-Login',
cancelButtonText: 'Cancel',
type: 'warning'
}).then(() => {
store.dispatch('user/resetToken').then(() => {
location.reload()
})
})
}
return Promise.reject(new Error(res.message || 'Error'))
} else {
return res
}
},
error => {
console.log('err' + error)
Message({
message: error.message,
type: 'error',
duration: 5 * 1000
})
return Promise.reject(error)
}
)
export default service
