在src下面添加js文件夹，不放到静态文件夹下引用比较麻烦，然后添加verifyCode.js文件，
文件内容为（可直接复制）：
function GVerify (options) { // 创建一个图形验证码对象，接收options对象为参数
this.options = { // 默认options参数值
id: '', // 容器Id
canvasId: 'verifyCanvas', // canvas的ID
width: '80', // 默认canvas宽度
height: '30', // 默认canvas高度
type: 'blend', // 图形验证码默认类型blend:数字字母混合类型、number:纯数字、letter:纯字母
code: ''
}
if (Object.prototype.toString.call(options) === '[object Object]') { // 判断传入参数类型
for (var i in options) { // 根据传入的参数，修改默认参数值
this.options[i] = options[i]
}
} else {
this.options.id = options
}
this.options.numArr = '0,1,2,3,4,5,6,7,8,9'.split(',')
this.options.letterArr = getAllLetter()
this._init()
this.refresh()
}
GVerify.prototype = {
/** 版本号**/
version: '1.0.0',
/** 初始化方法**/
_init: function () {
var con = document.getElementById(this.options.id)
var canvas = document.createElement('canvas')
// this.options.width = con.offsetWidth > 0 ? con.offsetWidth : '30'
// this.options.height = con.offsetHeight > 0 ? con.offsetHeight : '30'
this.options.width = '100'
this.options.height = '35'
canvas.id = this.options.canvasId
canvas.width = this.options.width
canvas.height = this.options.height
canvas.style.cursor = 'pointer'
canvas.innerHTML = '您的浏览器版本不支持canvas'
con.appendChild(canvas)
var parent = this
canvas.onclick = function () {
parent.refresh()
}
},
/** 生成验证码**/
refresh: function () {
this.options.code=''; //清空上一次的验证码
var canvas = document.getElementById(this.options.canvasId)
if (canvas.getContext) {
var ctx = canvas.getContext('2d')
}
ctx.textBaseline = 'middle'
ctx.fillStyle = randomColor(180, 240)
ctx.fillRect(0, 0, this.options.width, this.options.height)
if (this.options.type === 'blend') { // 判断验证码类型
var txtArr = this.options.numArr.concat(this.options.letterArr)
} else if (this.options.type === 'number') {
var txtArr = this.options.numArr
} else {
var txtArr = this.options.letterArr
}
for (var i = 1; i <= 4; i++) {
var txt = txtArr[randomNum(0, txtArr.length)]
this.options.code += txt
ctx.font = randomNum(this.options.height / 2, this.options.height) + 'px SimHei' // 随机生成字体大小
ctx.fillStyle = randomColor(50, 160) // 随机生成字体颜色
ctx.shadowOffsetX = randomNum(-3, 3)
ctx.shadowOffsetY = randomNum(-3, 3)
ctx.shadowBlur = randomNum(-3, 3)
ctx.shadowColor = 'rgba(0, 0, 0, 0.3)'
var x = this.options.width / 5 * i
var y = this.options.height / 2
var deg = randomNum(-30, 30)
/** 设置旋转角度和坐标原点**/
ctx.translate(x, y)
ctx.rotate(deg * Math.PI / 180)
ctx.fillText(txt, 0, 0)
/** 恢复旋转角度和坐标原点**/
ctx.rotate(-deg * Math.PI / 180)
ctx.translate(-x, -y)
}
/** 绘制干扰线**/
for (var i = 0; i < 4; i++) {
ctx.strokeStyle = randomColor(40, 180)
ctx.beginPath()
ctx.moveTo(randomNum(0, this.options.width), randomNum(0, this.options.height))
ctx.lineTo(randomNum(0, this.options.width), randomNum(0, this.options.height))
ctx.stroke()
}
/** 绘制干扰点**/
for (var i = 0; i < this.options.width / 4; i++) {
ctx.fillStyle = randomColor(0, 255)
ctx.beginPath()
ctx.arc(randomNum(0, this.options.width), randomNum(0, this.options.height), 1, 0, 2 * Math.PI)
ctx.fill()
}
},
/** 验证验证码**/
validate: function (code) {
var code = code.toLowerCase()
var v_code = this.options.code.toLowerCase()
if (code == v_code) {
return true
} else {
return false
}
}
}
/** 生成字母数组**/
function getAllLetter () {
var letterStr = 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z'
return letterStr.split(',')
}
/** 生成一个随机数**/
function randomNum (min, max) {
return Math.floor(Math.random() * (max - min) + min)
}
/** 生成一个随机色**/
function randomColor (min, max) {
var r = randomNum(min, max)
var g = randomNum(min, max)
var b = randomNum(min, max)
return 'rgb(' + r + ',' + g + ',' + b + ')'
}
export {
GVerify
}
通过修改type值，可自定义验证码为字母加数字，纯数字，纯字母形式。
页面中写入
<div id="v_container"></div>
引用verifyCode.js文件
import {GVerify} from '@/assets/js/verifyCode.js'
全部代码为：
<template>
<div class="page-login">
<div class="page-login--layer page-login--layer-area">
<ul class="circles">
<li v-for="n in 10" :key="n"></li>
</ul>
</div>
<div
class="page-login--layer page-login--layer-time"
flex="main:center cross:center">
{{time}}
</div>
<div class="page-login--layer">
<div
class="page-login--content"
flex="dir:top main:justify cross:stretch box:justify">
<div class="page-login--content-header">
<p class="page-login--content-header-motto">
时间是一切财富中最宝贵的财富
</p>
</div>
<div
class="page-login--content-main"
flex="dir:top main:center cross:center">
<!-- logo -->
<img class="page-login--logo" src="./image/logo@2x.png">
<!-- form -->
<div class="page-login--form">
<el-card shadow="never">
<el-form
ref="loginForm"
label-position="top"
:rules="rules"
:model="formLogin"
size="default">
<el-form-item prop="username">
<el-input
type="text"
v-model="formLogin.username"
placeholder="用户名">
<i slot="prepend" class="fa fa-user-circle-o"></i>
</el-input>
</el-form-item>
<el-form-item prop="password">
<el-input
type="password"
v-model="formLogin.password"
placeholder="密码">
<i slot="prepend" class="fa fa-keyboard-o"></i>
</el-input>
</el-form-item>
<el-form-item prop="code">
<el-input
type="text"
v-model="formLogin.code"
placeholder="验证码">
<template slot="append" >
<div id="v_container"></div> //验证码图片
</template>
</el-input>
</el-form-item>
<el-button
size="default"
@click="submit"
type="primary"
class="button-login">
登录
</el-button>
</el-form>
</el-card>
<p
class="page-login--options"
flex="main:justify cross:center">
<span><d2-icon name="question-circle"/> 忘记密码</span>
<span>注册用户</span>
</p>
<!-- quick login -->
<el-button class="page-login--quick" size="default" type="info" @click="dialogVisible = true">
快速选择用户（测试功能）
</el-button>
</div>
</div>
<div class="page-login--content-footer">
<p class="page-login--content-footer-locales">
<a
v-for="language in $languages"
:key="language.value"
@click="onChangeLocale(language.value)">
{{ language.label }}
</a>
</p>
<p class="page-login--content-footer-copyright">
Copyright
<d2-icon name="copyright"/>
2018 D2 Projects 开源组织出品
<a href="https://github.com/FairyEver">
@FairyEver
</a>
</p>
<p class="page-login--content-footer-options">
<a href="#">帮助</a>
<a href="#">隐私</a>
<a href="#">条款</a>
</p>
</div>
</div>
</div>
<el-dialog
title="快速选择用户"
:visible.sync="dialogVisible"
width="400px">
<el-row :gutter="10" style="margin: -20px 0px -10px 0px;">
<el-col v-for="(user, index) in users" :key="index" :span="8">
<div class="page-login--quick-user" @click="handleUserBtnClick(user)">
<d2-icon name="user-circle-o"/>
<span>{{user.name}}</span>
</div>
</el-col>
</el-row>
</el-dialog>
</div>
</template>
<script>
import dayjs from 'dayjs'
import { mapActions } from 'vuex'
import localeMixin from '@/locales/mixin.js'
import {GVerify} from '@/assets/js/verifyCode.js' //验证码文件
export default {
mixins: [
localeMixin
],
data () {
return {
timeInterval: null,
time: dayjs().format('HH:mm:ss'),
verifyCode:null,
// 快速选择用户
dialogVisible: false,
users: [],
// 表单
formLogin: {
username: 'admin',
password: 'admin',
code: ''
},
// 表单校验
rules: {
username: [
{
required: true,
message: '请输入用户名',
trigger: 'blur'
}
],
password: [
{
required: true,
message: '请输入密码',
trigger: 'blur'
}
],
code: [
{
required: true,
message: '请输入验证码',
trigger: 'blur'
}
]
}
}
},
mounted () {
this.verifyCode=new GVerify('v_container'); 初始化验证码
//GVerify()
},
beforeDestroy () {
clearInterval(this.timeInterval)
},
methods: {
...mapActions('d2admin/account', [
'login'
]),
refreshTime () {
this.time = dayjs().format('HH:mm:ss')
},
/**
* @description 接收选择一个用户快速登录的事件
* @param {Object} user 用户信息
*/
handleUserBtnClick (user) {
this.formLogin.username = user.username
this.formLogin.password = user.password
this.submit()
},
/**
* @description 提交表单
*/
// 提交登录信息
submit () {
this.$refs.loginForm.validate((valid) => {
if (valid) {
var vscode=this.formLogin.code; //获取输入的验证码
var codeflag=this.verifyCode.validate(vscode); //验证码校验
if(codeflag){ //判断是否验证成功
// 登录
// 注意 这里的演示没有传验证码
// 具体需要传递的数据请自行修改代码
this.login({
username: this.formLogin.username,
password: this.formLogin.password
})
.then(() => {
// 重定向对象不存在则返回顶层路径
this.$router.replace(this.$route.query.redirect || '/')
})
}else{
this.$message.error('验证码错误');
}
} else {
// 登录表单校验失败
this.$message.error('表单校验失败，请检查')
}
})
}
}
}
</script>
<style lang="scss">
.page-login {
@extend %unable-select;
$backgroundColor: #F0F2F5;
// ---
background-color: $backgroundColor;
height: 100%;
position: relative;
// 层
.page-login--layer {
@extend %full;
overflow: auto;
}
.page-login--layer-area {
overflow: hidden;
}
// 时间
.page-login--layer-time {
font-size: 24em;
font-weight: bold;
color: rgba(0, 0, 0, 0.03);
overflow: hidden;
}
// 登陆页面控件的容器
.page-login--content {
height: 100%;
min-height: 500px;
}
// header
.page-login--content-header {
padding: 1em 0;
.page-login--content-header-motto {
margin: 0px;
padding: 0px;
color: $color-text-normal;
text-align: center;
font-size: 12px;
}
}
// main
.page-login--logo {
width: 240px;
margin-bottom: 2em;
margin-top: -2em;
}
// 登录表单
.page-login--form {
width: 280px;
// 卡片
.el-card {
margin-bottom: 15px;
}
// 登录按钮
.button-login {
width: 100%;
}
// 输入框左边的图表区域缩窄
.el-input-group__prepend {
padding: 0px 14px;
}
.login-code {
height: 40px - 2px;
display: block;
margin: 0px -20px;
border-top-right-radius: 2px;
border-bottom-right-radius: 2px;
}
// 登陆选项
.page-login--options {
margin: 0px;
padding: 0px;
font-size: 14px;
color: $color-primary;
margin-bottom: 15px;
font-weight: bold;
}
.page-login--quick {
width: 100%;
}
}
// 快速选择用户面板
.page-login--quick-user {
@extend %flex-center-col;
padding: 10px 0px;
border-radius: 4px;
&:hover {
background-color: $color-bg;
i {
color: $color-text-normal;
}
span {
color: $color-text-normal;
}
}
i {
font-size: 36px;
color: $color-text-sub;
}
span {
font-size: 12px;
margin-top: 10px;
color: $color-text-sub;
}
}
// footer
.page-login--content-footer {
padding: 1em 0;
.page-login--content-footer-locales {
padding: 0px;
margin: 0px;
margin-bottom: 15px;
font-size: 12px;
line-height: 12px;
text-align: center;
color: $color-text-normal;
a {
color: $color-text-normal;
margin: 0 .5em;
&:hover {
color: $color-text-main;
}
}
}
.page-login--content-footer-copyright {
padding: 0px;
margin: 0px;
margin-bottom: 10px;
font-size: 12px;
line-height: 12px;
text-align: center;
color: $color-text-normal;
a {
color: $color-text-normal;
}
}
.page-login--content-footer-options {
padding: 0px;
margin: 0px;
font-size: 12px;
line-height: 12px;
text-align: center;
a {
color: $color-text-normal;
margin: 0 1em;
}
}
}
// 背景
.circles {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
overflow: hidden;
margin: 0px;
padding: 0px;
li {
position: absolute;
display: block;
list-style: none;
width: 20px;
height: 20px;
background: #FFF;
animation: animate 25s linear infinite;
bottom: -200px;
@keyframes animate {
0%{
transform: translateY(0) rotate(0deg);
opacity: 1;
border-radius: 0;
}
100%{
transform: translateY(-1000px) rotate(720deg);
opacity: 0;
border-radius: 50%;
}
}
&:nth-child(1) {
left: 15%;
width: 80px;
height: 80px;
animation-delay: 0s;
}
&:nth-child(2) {
left: 5%;
width: 20px;
height: 20px;
animation-delay: 2s;
animation-duration: 12s;
}
&:nth-child(3) {
left: 70%;
width: 20px;
height: 20px;
animation-delay: 4s;
}
&:nth-child(4) {
left: 40%;
width: 60px;
height: 60px;
animation-delay: 0s;
animation-duration: 18s;
}
&:nth-child(5) {
left: 65%;
width: 20px;
height: 20px;
animation-delay: 0s;
}
&:nth-child(6) {
left: 75%;
width: 150px;
height: 150px;
animation-delay: 3s;
}
&:nth-child(7) {
left: 35%;
width: 200px;
height: 200px;
animation-delay: 7s;
}
&:nth-child(8) {
left: 50%;
width: 25px;
height: 25px;
animation-delay: 15s;
animation-duration: 45s;
}
&:nth-child(9) {
left: 20%;
width: 15px;
height: 15px;
animation-delay: 2s;
animation-duration: 35s;
}
&:nth-child(10) {
left: 85%;
width: 150px;
height: 150px;
animation-delay: 0s;
animation-duration: 11s;
}
}
}
}
</style>
效果图
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