vue实现登录滑动拼图验证的两种方法：
第一种是纯前端组件验证，只能区分是人为操作还是机器操作。
第二种是前后端同时验证，这种方法加上后端校验相对会更安全一些。（注：在最底部加上了同时兼容移动端的方法）
1、纯前端组件验证
效果如图：
原代码gitee链接
实现步骤，先npm install：
npm install --save vue-monoplasty-slide-verify
在main.js引入
import Vue from 'vue';
import SlideVerify from 'vue-monoplasty-slide-verify';
Vue.use(SlideVerify);
在页面：
<slide-verify :l="42"
:r="10"
:w="310"
:h="155"
slider-text="向右滑动"
@success="onSuccess"
@fail="onFail"
@refresh="onRefresh"
></slide-verify>
<div>{
{
msg}}</div>
js：
export default {
name: 'App',
data(){
return {
msg: '',
}
},
methods: {
onSuccess(){
this.msg = 'login success'
},
onFail(){
this.msg = ''
},
onRefresh(){
this.msg = ''
}
}
}
2、前后端同时验证
效果如图：
使用步骤和代码：
引入下方给的组件slider.vue到页面：
<!-- 拼图验证码 -->
<div @click="onShow">开始验证</div>
<div class="islider" v-if="show">
<Slider
@getImg="getImg"
@validImg="validImg"
@close="onClose"
:log="true"
></Slider>
</div>
import Slider from "@/components/login/slider";
export default {
components: {
Slider
},
data() {
return {
show: false,
loginForm: {
}
}
},
methods: {
onShow() {
this.show= true
},
onClose() {
this.show = false;
},
// 获取滑动验证码（下方有格式截图）
getImg(callback) {
sliderCaptcha().then((res) => {
callback(res.data.data);
}, error => {
callback(error);
});
},
// 操作滑动后返回值，并传去后端验证
validImg(movePercent, id, callback) {
this.loginForm.code = movePercent; // 手动定位返回的值
this.loginForm.key = id; // 后台返回的id，再传回去
this.handleLogin(); // 登陆请求方法
callback(false);
this.show= true;
},
}
获取滑动验证码接口 》 后端返回值的格式：
下方是大佬贡献的组件，复制粘贴就可以用了：
slider.vue：
<template>
<div class="slider">
<div class="mask">
<div class="container">
<div class="title">
<div class="text">
<span>请完成下列验证后继续</span>
</div>
<div class="button-group">
<img
src="data:image/png;base64,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"
@click="reset"
/>
<img
src="data:image/png;base64,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"
@click="close"
/>
</div>
</div>
<div class="img">
<div class="backgroup-img">
<img
class="inner-bg-img"
:src="backgroupImg"
/>
</div>
<div
class="move-img"
:style="{left: `${moveX}px`}"
>
<img
class="inner-mv-img"
:src="moveImg"
/>
</div>
</div>
<div class="slide">
<div
class="slider-mask"
:style="{width: `${blcokLeft}px`}"
>
<div
class="block"
ref="block"
@mousedown="start"
:style="{left: `${blcokLeft}px`}"
>
<span class="yidun_slider_icon"></span>
</div>
</div>
</div>
<div
class="loading"
v-if="loading"
>
<span>loading...</span>
</div>
</div>
</div>
</div>
</template>
<script>
// =========================================
// 父组件需要提供的方法 名称
// =========================================
/**
* 获取滑块图片方法
*/
const GET_IMG_FUN = "getImg";
/**
* 校验滑块图片方法
*/
const VALID_IMG_FUN = "validImg";
/**
* 滑块窗口关闭事件监听
*/
const CLOST_EVENT_FUN = "close";
export default {
data() {
return {
/**滑块背景图片 */
backgroupImg: "",
/**滑块图片 */
moveImg: "",
/**是否已经移动滑块 */
startMove: false,
/**滑块移动距离 */
blcokLeft: 0,
/**开始滑动的x轴 */
startX: 0,
/**划过的百分比 */
movePercent: 0,
/**验证码唯一ID */
uuid: "",
/**滑块移动的x轴 */
moveX: 0,
/** 加载遮罩标识 */
loading: false
};
},
props: {
// 是否开启日志， 默认true
log: {
type: Boolean,
required: false,
default: true
}
},
mounted() {
this.getImg();
},
methods: {
/**
* 打印日志
*/
printLog(msg, ...optionalParams) {
if (this.log) {
if (optionalParams && optionalParams.length > 0) {
console.info(
`滑块验证码[${
msg}]`,
optionalParams.length === 1 ? optionalParams[0] : optionalParams
);
} else {
console.info(`滑块验证码[${
msg}]`);
}
}
},
/**
* 获取滑块图片
*/
getImg() {
this.loading = true;
this.$emit(GET_IMG_FUN, data => {
this.printLog(GET_IMG_FUN, data);
this.loading = false;
if (!data) return;
console.log("data", data);
this.backgroupImg = data.captcha.backgroundImage;
this.moveImg = data.captcha.sliderImage;
this.uuid = data.id;
});
},
/**
* 校验图片
*/
validImg() {
this.printLog(`滑块抬起`, this.movePercent);
this.$emit(VALID_IMG_FUN, this.movePercent, this.uuid, data => {
this.printLog(VALID_IMG_FUN, data);
if (data === false) {
this.reset();
}
});
},
/**
* 重新生成图片
*/
reset() {
this.getImg();
this.moveX = 0;
this.movePercent = 0;
this.startX = 0;
this.blcokLeft = 0;
},
/**
* 按钮关闭事件
*/
close() {
this.printLog("关闭按钮触发");
this.$emit(CLOST_EVENT_FUN);
},
/**
* 开始滑动
*/
start(e) {
this.startX = e.pageX;
this.startMove = true;
window.addEventListener("mousemove", this.move);
window.addEventListener("mouseup", this.up);
},
/**
* 滑块滑动事件
*/
move(e) {
if (!this.startMove) return;
const moveX = e.pageX - this.startX;
const movePercent = moveX / 280;
if (moveX <= 0) {
this.blcokLeft = 0;
this.moveX = 0;
this.movePercent = 0;
} else if (moveX >= 0 && moveX <= 235) {
this.blcokLeft = moveX;
this.moveX = moveX;
this.movePercent = movePercent;
} else if (moveX >= 235) {
this.blcokLeft = 235;
this.moveX = 235;
this.movePercent = movePercent;
}
},
/**
* 滑块鼠标抬起事件
*/
up(e) {
window.removeEventListener("mousemove", this.move);
window.removeEventListener("mouseup", this.up);
if (!this.startMove) return;
this.startMove = false;
this.validImg();
}
},
/**
* 销毁事件
*/
beforeDestroy() {
window.removeEventListener("mousemove", this.move);
window.removeEventListener("mouseup", this.up);
}
};
</script>
<style lang="scss" scoped>
.slider-mask {
position: absolute;
left: 0;
top: 0;
height: 40px;
border: 0 solid #1991fa;
background: #d1e9fe;
border-radius: 2px;
}
.yidun_slider_icon {
position: absolute;
top: 50%;
margin-top: -6px;
left: 50%;
margin-left: -6px;
width: 14px;
height: 10px;
background-image: url(https://cstaticdun.126.net//2.13.7/images/icon_light.4353d81.png);
background-position: 0 -13px;
background-size: 32px 544px;
}
.inner-mv-img,
.inner-bg-img,
.title {
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
-khtml-user-select: none;
user-select: none;
}
.slider {
.mask {
display: block;
z-index: 998;
background: rgba(0, 0, 0, 0);
width: 310px;
height: 280px;
}
.container {
position: absolute;
z-index: 999;
width: 310px;
height: 280px;
margin: auto;
background: rgba(255, 255, 255, 1);
border-radius: 6px;
box-shadow: 0px 0px 11px 0px rgba(153, 153, 153, 1);
box-sizing: border-box;
padding: 17px 15px;
.title {
font-size: 14px;
color: #333;
display: flex;
justify-content: space-between;
.button-group {
img {
width: 25px;
height: 25px;
cursor: pointer;
}
}
}
.img {
width: 280px;
height: 180px;
position: relative;
img {
width: 100%;
}
.backgroup-img {
position: absolute;
left: 0;
top: 0;
width: 100%;
}
.move-img {
width: 52.20338981px;
position: absolute;
left: 0;
top: 0;
}
}
.slide {
width: 100%;
height: 40px;
border: 1px solid #e4e7eb;
background-color: #f7f9fa;
box-sizing: border-box;
position: relative;
&::before {
position: absolute;
content: "按住左边按钮移动完成上方拼图";
display: flex;
justify-content: center;
align-items: center;
font-size: 12px;
color: #999;
width: 100%;
height: 100%;
text-indent: 50px;
}
.block {
width: 40px;
height: 38px;
background-color: #fff;
box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
display: flex;
justify-content: center;
align-items: center;
position: absolute;
left: 0;
top: 0;
cursor: pointer;
background-size: 30px;
background-repeat: no-repeat;
background-position: center;
}
}
.block:hover {
background-color: #1991fa;
}
.block:hover .yidun_slider_icon {
background-image: url(https://cstaticdun.126.net//2.13.7/images/icon_light.4353d81.png);
background-position: 0 0;
background-size: 32px 544px;
}
.loading {
width: 100%;
height: 100%;
background: rgba(0, 0, 0, 0.3);
position: absolute;
top: 0;
left: 0;
border-radius: 6px;
display: flex;
justify-content: center;
align-items: center;
color: #fff;
}
}
}
</style>
如果想兼容移动端，可以做以下修改：
1、修改上面的组件，加上touchstart、touchmove、touchend方法
<div
class="block"
ref="block"
@mousedown="start"
@touchstart="touchstart"
@touchmove="touchmove"
@touchend="touchend"
:style="{left: `${blcokLeft}px`}"
>
<span class="yidun_slider_icon"></span>
</div>
js也加上以下几个方法，就可以了：
// 移动端 - 开始触屏
touchstart(e) {
this.startX = e.changedTouches[0].screenX;
this.startMove = true;
},
// 移动端 - 开始滑动
touchmove(e) {
if (!this.startMove) return;
const moveX = e.changedTouches[0].screenX - this.startX;
const movePercent = moveX / 280;
if (moveX <= 0) {
this.blcokLeft = 0;
this.moveX = 0;
this.movePercent = 0;
} else if (moveX >= 0 && moveX <= 235) {
this.blcokLeft = moveX;
this.moveX = moveX;
this.movePercent = movePercent;
} else if (moveX >= 235) {
this.blcokLeft = 235;
this.moveX = 235;
this.movePercent = movePercent;
}
},
// 移动端 - 结束滑动
touchend(e) {
if (!this.startMove) return;
this.startMove = false;
this.validImg();
},