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网站个人主页,搜索引擎营销的6种方式,长春仿站定制模板建站,如何加快网站访问速度一、背景前两天发了一篇 vue-monoplasty-slide-verify 滑动验证码插件使用及踩坑_vue-monoplasty-slide-verify 引用后不显示-CSDN博客这两天项目又需要通过接口校验，接口返回了背景图片和拼图图片，于是在网上找了一篇帖子，vue 图片滑动…

一、背景

前两天发了一篇 vue-monoplasty-slide-verify 滑动验证码插件使用及踩坑_vue-monoplasty-slide-verify 引用后不显示-CSDN博客

这两天项目又需要通过接口校验，接口返回了背景图片和拼图图片，于是在网上找了一篇帖子，vue + 图片滑动验证_基于vue图片滑动验证-CSDN博客

写的不错，代码拿过来就能用；但是感觉源码和vue-monoplasty-slide-verify的比较像，vue-monoplasty-slide-verify的icon图片拿过来直接就能在参考帖子里用。

二、获取验证码接口返回数据示例

三、校验接口返回数据示例

四、封装与后端配合的滑动组件

//在参考帖基础上修改的
<template><div><el-dialog :visible.sync="showSlideVerify" title="向右滑动通过验证" :width=" w +48 + 'px'" :close-on-click-modal="false" :close-on-press-escape="false"><div class="slide-verify" :style="{width: w + 'px'}" id="slideVerify" onselectstart="return false;"><!-- 图片加载遮蔽罩 --><div :class="{'slider-verify-loading': loadBlock}"></div><canvas :width="w" :height="h" ref="canvas"></canvas><div v-if="showRefresh" @click="refresh" class="slide-verify-refresh-icon"></div><canvas :width="block_width" :height="h" ref="block" class="slide-verify-block"></canvas><!-- container --><div class="slide-verify-slider" :class="{'container-active': containerActive, 'container-success': containerSuccess, 'container-fail': containerFail}"><div class="slide-verify-slider-mask" :style="{width: sliderMaskWidth}"><!-- slider --><div @mousedown="sliderDown" @touchstart="touchStartEvent" @touchmove="touchMoveEvent" @touchend="touchEndEvent" class="slide-verify-slider-mask-item" :style="{left: sliderLeft}"><div class="slide-verify-slider-mask-item-icon"></div></div></div><span class="slide-verify-slider-text">{{sliderText}}</span></div></div></el-dialog></div></template>
<script>
import { getCanvasAndPuzzle, checkPuzzle } from '@/api/modules/setting'export default {name: 'SlideVerify',props: {sliderText: {type: String,default: '向右滑动'},showRefresh: {type: Boolean,default: true}},data () {return {showSlideVerify: false,containerActive: false, // container active classcontainerSuccess: false, // container success classcontainerFail: false, // container fail classnonceStr: '',canvasCtx: null,blockCtx: null,block: null,block_src: undefined,block_y: undefined,block_width: undefined,block_height: undefined,block_radius: undefined,w: 0,h:0,img: undefined,originX: undefined,originY: undefined,isMouseDown: false,trail: [],sliderLeft: 0, // block right offsetsliderMaskWidth: 0, // mask width,success: false, // Bug Fixes 修复了验证成功后还能滑动loadBlock: true, // Features 图片加载提示，防止图片没加载完就开始验证timestamp: null}},methods: {show () {Object.assign(this.$data, {success: false,containerActive: false,containerSuccess: false,containerFail: false,nonceStr: '',w: 0,h: 0,img: undefined,loadBlock: true,block_src: undefined,block_y: undefined,block_width: undefined,block_height: undefined,block_radius: undefined,sliderLeft: 0,sliderMaskWidth: 0});this.getCanvasAndPuzzle();},getCanvasAndPuzzle () { //从接口获取滑动组件背景图片、图片宽高与拼图图片、拼图宽高、block_radius、垂直方向上的位置getCanvasAndPuzzle().then(res => {Object.assign(this.$data, {nonceStr: res.data.nonceStr, //根据接口的校验逻辑，校验时需传递给后台w: res.data.canvasWidth,h: res.data.canvasHeight,img: res.data.canvasSrc,block_src: res.data.blockSrc,block_y: res.data.blockY,block_width: res.data.blockWidth,block_height: res.data.blockHeight,block_radius: res.data.blockRadius,showSlideVerify: true});this.$nextTick(() => {this.init();});}).catch(error => {this.$message.error(error);});},init () {this.initDom();this.initImg();this.bindEvents();},initDom () {this.block = this.$refs.block;this.canvasCtx = this.$refs.canvas.getContext('2d');this.blockCtx = this.block.getContext('2d');},initImg () {let _this = this, image = new Image(), blockImage = new Image();image.src = this.img;blockImage.src = this.block_src;image.onload = () => {_this.canvasCtx.drawImage(image, 0, 0, _this.w, _this.h);};blockImage.onload = () => {_this.loadBlock = false;// 第二个、三个参数分别是被拖动的拼图在水平、垂直方向的偏移量_this.blockCtx.drawImage(blockImage, 0, _this.block_y, _this.block_width, _this.block_height);};},sliderDown (event) {if (this.success) return;this.originX = event.clientX;this.originY = event.clientY;this.isMouseDown = true;this.timestamp = + new Date();},touchStartEvent (e) {if (this.success) return;this.originX = e.changedTouches[0].pageX;this.originY = e.changedTouches[0].pageY;this.isMouseDown = true;this.timestamp = + new Date();},bindEvents () {document.addEventListener('mousemove', (e) => {if (!this.isMouseDown) return false;const moveX = e.clientX - this.originX;const moveY = e.clientY - this.originY;if (moveX < 0 || moveX + 38 >= this.w) return false;this.sliderLeft = moveX + 'px';let blockLeft = (this.w - 40 - 20) / (this.w - 40) * moveX;this.block.style.left = blockLeft + 'px';this.containerActive = true;this.sliderMaskWidth = moveX + 'px';this.trail.push(moveY);});document.addEventListener('mouseup', (e) => {if (!this.isMouseDown) return false;this.isMouseDown = false;if (e.clientX === this.originX) return false;this.containerActive = false;this.timestamp = + new Date() - this.timestamp;this.verify();});},touchMoveEvent (e) {if (!this.isMouseDown) return false;const moveX = e.changedTouches[0].pageX - this.originX;const moveY = e.changedTouches[0].pageY - this.originY;if (moveX < 0 || moveX + 38 >= this.w) return false;this.sliderLeft = moveX + 'px';let blockLeft = (this.w - 40 - 20) / (this.w - 40) * moveX;this.block.style.left = blockLeft + 'px';this.containerActive = true;this.sliderMaskWidth = moveX + 'px';this.trail.push(moveY);},touchEndEvent (e) {if (!this.isMouseDown) return false;this.isMouseDown = false;if (e.changedTouches[0].pageX === this.originX) return false;this.containerActive = false;this.timestamp = + new Date() - this.timestamp;this.verify();},verify () {
//将拼图水平方向拖动量传递给接口，接口来校验是否拼好返回校验结果，我也不是很理解这个操作，但没办法，就让这样做，只能自己网上找例子，然后改出来了checkPuzzle({nonceStr: this.nonceStr,value: parseInt(this.block.style.left) //被拖动拼图在水平方向上的移动量}).then(res => {if(res.code===-1 || !res.data) {//校验通过，res.data的值为true，否则为falsethis.containerFail = true;this.$message.error(res.message);this.refresh();} else {this.$emit('verify-success');Object.assign(this.$data, {containerSuccess: true,success: true,showSlideVerify: false});}}).catch(error => {this.$message.error(error);});},refresh () {let { w, h, block_width } = this;this.canvasCtx.clearRect(0, 0, w, h);this.blockCtx.clearRect(0, 0, block_width, h);this.block.style.left = 0;Object.assign(this.$data, {success: false,containerActive: false,containerSuccess: false,containerFail: false,nonceStr: '',img: undefined,loadBlock: true,sliderLeft: 0,sliderMaskWidth: 0});this.getCanvasAndPuzzle();}}
}
</script>
<style scoped>
.slide-verify {position: relative;
}/* 图片加载样式 */
.slider-verify-loading {position: absolute;top: 0;right: 0;left: 0;bottom: 0;background: rgba(255, 255, 255, 0.9);z-index: 999;animation: loading 1.5s infinite;
}@keyframes loading {0% {opacity: 0.7;}100% {opacity: 9;}
}.slide-verify-block {position: absolute;left: 0;top: 0;
}.slide-verify-refresh-icon {position: absolute;right: 0;top: 0;width: 34px;height: 34px;cursor: pointer;background: url('./imgs/icon.png') 0 -437px;background-size: 34px 471px;
}.slide-verify-slider {position: relative;text-align: center;width: 100%;height: 40px;line-height: 40px;/* margin-top: 15px; */background: #f7f9fa;color: #45494c;border: 1px solid #e4e7eb;
}.slide-verify-slider-mask {position: absolute;left: 0;top: 0;height: 40px;border: 0 solid #1991fa;background: #d1e9fe;
}.slide-verify-slider-mask-item {position: absolute;top: 0;left: 0;width: 40px;height: 40px;background: #fff;box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);cursor: pointer;transition: background 0.2s linear;
}.slide-verify-slider-mask-item:hover {background: #1991fa;
}.slide-verify-slider-mask-item:hover .slide-verify-slider-mask-item-icon {background-position: 0 -13px;
}.slide-verify-slider-mask-item-icon {position: absolute;top: 15px;left: 13px;width: 14px;height: 12px;background: url('./imgs/icon.png') 0 -26px;background-size: 34px 471px;
}
.container-active .slide-verify-slider-mask-item {height: 38px;top: -1px;border: 1px solid #1991fa;
}.container-active .slide-verify-slider-mask {height: 38px;border-width: 1px;
}.container-success .slide-verify-slider-mask-item {height: 38px;top: -1px;border: 1px solid #52ccba;background-color: #52ccba !important;
}.container-success .slide-verify-slider-mask {height: 38px;border: 1px solid #52ccba;background-color: #d2f4ef;
}.container-success .slide-verify-slider-mask-item-icon {background-position: 0 0 !important;
}.container-fail .slide-verify-slider-mask-item {height: 38px;top: -1px;border: 1px solid #f57a7a;background-color: #f57a7a !important;
}.container-fail .slide-verify-slider-mask {height: 38px;border: 1px solid #f57a7a;background-color: #fce1e1;
}.container-fail .slide-verify-slider-mask-item-icon {top: 14px;background-position: 0 -82px !important;
}.container-active .slide-verify-slider-text,
.container-success .slide-verify-slider-text,
.container-fail .slide-verify-slider-text {display: none;
}
</style>

五、接口

意义不太大，要根据项目实际情况来的