vuejs开发：vue实现登录验证码。
canvas验证码组件（可直接复制，无需改动）。
<template>
<div class="s-canvas">
<canvas id="s-canvas" :width="contentWidth" :height="contentHeight"></canvas>
</div>
</template>
<script>
export default {
name: "SIdentify",
props: {
identifyCode: {
type: String,
default: '1234'
},
fontSizeMin: {
type: Number,
default: 25
},
fontSizeMax: {
type: Number,
default: 30
},
backgroundColorMin: {
type: Number,
default: 255
},
backgroundColorMax: {
type: Number,
default: 255
},
colorMin: {
type: Number,
default: 0
},
colorMax: {
type: Number,
default: 160
},
lineColorMin: {
type: Number,
default: 100
},lineColorMax: {
type: Number,
default: 255
},
dotColorMin: {
type: Number,
default: 0
},
dotColorMax: {
type: Number,
default: 255
},
contentWidth: {
type: Number,
default: 112
},
contentHeight: {
type: Number,
default: 31
}
},
methods: {
// 生成一个随机数
randomNum(min, max) {
return Math.floor(Math.random() * (max - min) + min)
},
// 生成一个随机的颜色
randomColor(min, max) {
let r = this.randomNum(min, max)
let g = this.randomNum(min, max)
let b = this.randomNum(min, max)
return 'rgb(' + r + ',' + g + ',' + b + ')'
},
drawPic() {
let canvas = document.getElementById('s-canvas')
let ctx = canvas.getContext('2d')
ctx.textBaseline = 'bottom'
// 绘制背景
ctx.fillStyle = this.randomColor(this.backgroundColorMin, this.backgroundColorMax)
ctx.fillRect(0, 0, this.contentWidth, this.contentHeight)
// 绘制文字
for (let i = 0; i < this.identifyCode.length; i++) {
this.drawText(ctx, this.identifyCode[i], i)
}
this.drawLine(ctx)
this.drawDot(ctx)
},
drawText(ctx, txt, i) {
ctx.fillStyle = this.randomColor(this.colorMin, this.colorMax)
ctx.font = this.randomNum(this.fontSizeMin, this.fontSizeMax) + 'px SimHei'
let x = (i + 1) * (this.contentWidth / (this.identifyCode.length + 1))
let y = this.randomNum(this.fontSizeMax, this.contentHeight - 5)
var deg = this.randomNum(-45, 45)
// 修改坐标原点和旋转角度
ctx.translate(x, y)
ctx.rotate(deg * Math.PI / 180)
ctx.fillText(txt, 0, 0)
// 恢复坐标原点和旋转角度
ctx.rotate(-deg * Math.PI / 180)
ctx.translate(-x, -y)
},
drawLine(ctx) {
// 绘制干扰线
for (let i = 0; i < 5; i++) {
ctx.strokeStyle = this.randomColor(this.lineColorMin, this.lineColorMax)
ctx.beginPath()
ctx.moveTo(this.randomNum(0, this.contentWidth), this.randomNum(0, this.contentHeight))
ctx.lineTo(this.randomNum(0, this.contentWidth), this.randomNum(0, this.contentHeight))
ctx.stroke()
}
},
drawDot(ctx) {
// 绘制干扰点
for (let i = 0; i < 80; i++) {
ctx.fillStyle = this.randomColor(0, 255)
ctx.beginPath()
ctx.arc(this.randomNum(0, this.contentWidth), this.randomNum(0, this.contentHeight), 1, 0, 2 * Math.PI)
ctx.fill()
}
}
},
watch: {
identifyCode() {
this.drawPic()
}
},
mounted() {
this.drawPic()
}
}
</script>
<style scoped>
.s-canvas {
height: 38px;
}
.s-canvas canvas{
margin-top: 1px;
margin-left: 8px;
}
</style>login页面完整代码：
<style>
@import './login.less';
</style>
<template>
<div @keydown.enter="handleSubmit">
<div>
<Card :bordered="false" style="width: 350px;height: 380px">
<div>
<Tabs value="name1" :animated="false">
<TabPane label="登录" name="name1">
<Form ref="loginForm" :model="form" :rules="rules" :label-width="90" inline>
<FormItem label="帐号" prop="username">
<Input v-model="form.username" placeholder="请输入帐号" ref="input" clearable style="width: 200px"/>
</FormItem>
<FormItem label="密码" prop="password">
<Input v-model="form.password" placeholder="请输入密码" clearable style="width: 200px"/>
</FormItem>
<FormItem label="验证码" prop="verificationCode">
<Input v-model="form.verificationCode" placeholder="请输入验证码" clearable style="width: 200px"/>
<div @click="refreshCode" style="margin-top: 20px">
<!--验证码组件-->
<s-identify :identifyCode="identifyCode"></s-identify>
</div>
</FormItem>
<div style="text-align: center">
<Button @click="handleSubmit" type="primary" style="margin-right: 20px">登录</Button>
</div>
</Form>
</TabPane>
<TabPane label="注册" name="name2">
<Form ref="formValidate" :model="formValidate" :rules="ruleValidate" :label-width="90" inline>
<FormItem label="帐号" prop="username">
<Input v-model="formValidate.username" placeholder="请输入帐号" ref="input" clearable style="width: 200px"/>
</FormItem>
<FormItem label="密码" prop="password">
<Input v-model="formValidate.password" placeholder="请输入密码" clearable style="width: 200px"/>
</FormItem>
<FormItem label="手机号" prop="mobile">
<Input v-model="formValidate.mobile" placeholder="请输入手机号" clearable style="width: 200px" />
</FormItem>
<FormItem label="短信验证码" prop="header">
<Input v-model="formValidate.header" placeholder="短信验证码" style="width: 200px"/>
<Button type="primary" size="small" @click="getCode" :disabled="codeDisabled">{{codeMsg}}</Button>
</FormItem>
<div style="text-align: center">
<Button type="primary" @click="register('formValidate')">注册</Button>
</div>
</Form>
</TabPane>
</Tabs>
</div>
</Card>
</div>
<!--<vue-particles
color="#FF4500"
:particleOpacity="0.7"
:particlesNumber="300"
shapeType="circle"
:particleSize="7"
linesColor="#00FF00"
:linesWidth="2"
:lineLinked="true"
:lineOpacity="0.4"
:linesDistance="150"
:moveSpeed="4"
:hoverEffect="true"
hoverMode="grab"
:clickEffect="true"
clickMode="repulse"
>
</vue-particles>-->
</div>
</template>
<script>
import Cookies from 'js-cookie';
import {apiRequest, login, getCode} from '@/service/service';
import SIdentify from '@/components/SIdentify';
export default {
components: { SIdentify },
name: 'login',
data() {
return {
form: {},
formValidate: {},
rules: {
username: [
{required: true, message: '登录用户名不能为空', trigger: 'blur'}
],
password: [
{required: true, message: '登录密码不能为空', trigger: 'blur'}
],
verificationCode: [
{required: true, message: '验证码不能为空', trigger: 'blur'}
]
},
ruleValidate: {
username: [
{required: true, message: '登录用户名不能为空', trigger: 'blur'}
],
password: [
{required: true, message: '登录密码不能为空', trigger: 'blur'}
],
mobile: [
{required: true, message: '手机号不能为空', trigger: 'blur'}
],
header: [
{required: true, message: '短信验证码不能为空', trigger: 'blur'}
]
},
img:'../../static/grey_wolf.jpg',
// 是否禁用按钮
codeDisabled: false,
// 倒计时秒数
countdown: 60,
// 按钮上的文字
codeMsg: '获取验证码',
// 定时器
timer: null,
identifyCode: '',
identifyCodes: '1234567890abcdefjhijklinopqrsduvwxyz',
};
},
methods: {
// 刷新验证码
refreshCode () {
this.identifyCode = ''
this.makeCode(this.identifyCodes,4);
},
makeCode (o,l) {
for (let i = 0; i < l; i++) {
this.identifyCode += this.identifyCodes[this.randomNum(0, this.identifyCodes.length)]
}
},
randomNum (min, max) {
return Math.floor(Math.random() * (max - min) + min)
},
// 获取短信验证码
getCode() {
// 验证码60秒倒计时
if (!this.timer) {
this.getValidStr();
this.timer = setInterval(this.getValidStr, 1000);
}
apiRequest(this, getCode(this.form.mobile), response => {
});
},
getValidStr(){
if (this.countdown > 0 && this.countdown <= 60) {
this.countdown--;
if (this.countdown !== 0) {
this.codeMsg = "重新发送(" + this.countdown + ")";
this.codeDisabled = true;
} else {
clearInterval(this.timer);
this.codeMsg = "获取验证码";
this.countdown = 60;
this.timer = null;
this.codeDisabled = false;
}
}
},
handleSubmit() {
this.$refs.loginForm.validate((valid) => {
if (valid) {
//登录密码做MD5加密
let password = this.$copyto.md5(this.form.password);
//登录接口请求
apiRequest(this, login(this.form.username, password), response => {
this.$store.commit('setUserInfo', response.data);
Cookies.set('user', this.form.username);
Cookies.set('userId', response.data.id);
localStorage.sessionId = response.sessionId
this.$store.commit('setAvator', '');
if (this.form.userName === 'admin') {
Cookies.set('access', 0);
} else {
Cookies.set('access', 1);
}
this.$router.push({name: 'home_index'});
});
}
});
},
register() {
}
},
mounted () {
// 初始化验证码
this.identifyCode = ''
this.makeCode(this.identifyCodes, 4)
},
};
</script>
<style>
</style>试试吧！！！
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