怎么用vue實(shí)現(xiàn)登錄驗(yàn)證碼

本篇內(nèi)容主要講解“怎么用vue實(shí)現(xiàn)登錄驗(yàn)證碼”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實(shí)用性強(qiáng)。下面就讓小編來帶大家學(xué)習(xí)“怎么用vue實(shí)現(xiàn)登錄驗(yàn)證碼”吧!

本文實(shí)例為大家分享了vue實(shí)現(xiàn)登錄驗(yàn)證碼的具體代碼，供大家參考，具體內(nèi)容如下

先來demo效果圖

canvas驗(yàn)證碼組件（可直接復(fù)制，無需改動）

<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: {
            // 生成一個(gè)隨機(jī)數(shù)
            randomNum(min, max) {
                return Math.floor(Math.random() * (max - min) + min)
            },
            // 生成一個(gè)隨機(jī)的顏色
            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'
                // 繪制背景
                ctx.fillStyle = this.randomColor(this.backgroundColorMin, this.backgroundColorMax)
                ctx.fillRect(0, 0, this.contentWidth, this.contentHeight)
                // 繪制文字
                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)
                // 修改坐標(biāo)原點(diǎn)和旋轉(zhuǎn)角度
                ctx.translate(x, y)
                ctx.rotate(deg * Math.PI / 180)
                ctx.fillText(txt, 0, 0)
                // 恢復(fù)坐標(biāo)原點(diǎn)和旋轉(zhuǎn)角度
                ctx.rotate(-deg * Math.PI / 180)
                ctx.translate(-x, -y)
            },
            drawLine(ctx) {
                // 繪制干擾線
                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) {
                // 繪制干擾點(diǎn)
                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頁面的html部分，按需改動

引入驗(yàn)證碼組件

methods方法

login頁面完整代碼

<style lang="less">
    @import './login.less';
</style>
 
<template>
    <div class="login" @keydown.enter="handleSubmit">
        <div class="login-con">
            <Card :bordered="false" >
                <div class="form-con">
                    <Tabs value="name1" :animated="false">
                        <TabPane label="登錄" name="name1">
                            <Form ref="loginForm" :model="form" :rules="rules" :label-width="90" inline>
                                <FormItem label="帳號" prop="username">
                                    <Input v-model="form.username" placeholder="請輸入帳號" ref="input" clearable />
                                </FormItem>
                                <FormItem label="密碼" prop="password">
                                    <Input v-model="form.password" placeholder="請輸入密碼" clearable  />
                                </FormItem>
                                <FormItem label="驗(yàn)證碼" prop="verificationCode">
                                    <Input v-model="form.verificationCode" placeholder="請輸入驗(yàn)證碼" clearable  />
                                    <div @click="refreshCode" >
                                        <!--驗(yàn)證碼組件-->
                                        <s-identify :identifyCode="identifyCode"></s-identify>
                                    </div>
                                </FormItem>
                                <div >
                                    <Button @click="handleSubmit" type="primary" >登錄</Button>
                                </div>
                            </Form>
                        </TabPane>
                        <TabPane label="注冊" name="name2">
                            <Form ref="formValidate" :model="formValidate" :rules="ruleValidate" :label-width="90" inline>
                                <FormItem label="帳號" prop="username">
                                    <Input v-model="formValidate.username" placeholder="請輸入帳號" ref="input" clearable />
                                </FormItem>
                                <FormItem label="密碼" prop="password">
                                    <Input v-model="formValidate.password" placeholder="請輸入密碼" clearable  />
                                </FormItem>
                                <FormItem label="手機(jī)號" prop="mobile">
                                    <Input v-model="formValidate.mobile" placeholder="請輸入手機(jī)號" clearable  />
                                </FormItem>
                                <FormItem label="短信驗(yàn)證碼" prop="header">
                                    <Input v-model="formValidate.header" placeholder="短信驗(yàn)證碼" />
                                    <Button type="primary" size="small" @click="getCode" :disabled="codeDisabled">{{codeMsg}}</Button>
                                </FormItem>
                                <div >
                                    <Button type="primary" @click="register('formValidate')">注冊</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: '登錄用戶名不能為空', trigger: 'blur'}
                    ],
                    password: [
                        {required: true, message: '登錄密碼不能為空', trigger: 'blur'}
                    ],
                    verificationCode: [
                        {required: true, message: '驗(yàn)證碼不能為空', trigger: 'blur'}
                    ]
                },
                ruleValidate: {
                    username: [
                        {required: true, message: '登錄用戶名不能為空', trigger: 'blur'}
                    ],
                    password: [
                        {required: true, message: '登錄密碼不能為空', trigger: 'blur'}
                    ],
                    mobile: [
                        {required: true, message: '手機(jī)號不能為空', trigger: 'blur'}
                    ],
                    header: [
                        {required: true, message: '短信驗(yàn)證碼不能為空', trigger: 'blur'}
                    ]
                },
                img:'../../static/grey_wolf.jpg',
                // 是否禁用按鈕
                codeDisabled: false,
                // 倒計(jì)時(shí)秒數(shù)
                countdown: 60,
                // 按鈕上的文字
                codeMsg: '獲取驗(yàn)證碼',
                // 定時(shí)器
                timer: null,
                identifyCode: '',
                identifyCodes: '1234567890abcdefjhijklinopqrsduvwxyz',
            };
        },
        methods: {
            // 刷新驗(yàn)證碼
            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)
            },
            // 獲取短信驗(yàn)證碼
            getCode() {
                // 驗(yàn)證碼60秒倒計(jì)時(shí)
                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 = "重新發(fā)送(" + this.countdown + ")";
                        this.codeDisabled = true;
                    } else {
                        clearInterval(this.timer);
                        this.codeMsg = "獲取驗(yàn)證碼";
                        this.countdown = 60;
                        this.timer = null;
                        this.codeDisabled = false;
                    }
                }
            },
            handleSubmit() {
                this.$refs.loginForm.validate((valid) => {
                    if (valid) {
                        //登錄密碼做MD5加密
                        let password = this.$copyto.md5(this.form.password);
                        //登錄接口請求
                        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 () {
            // 初始化驗(yàn)證碼
            this.identifyCode = ''
            this.makeCode(this.identifyCodes, 4)
        },
 
    };
</script>
 
<style>
 
</style>

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