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Blazor 版本的滑块验证码 传送门


项目内演示:http://admin.blazor.zone/ (本项目为开源后台管理框架 [BootstrapAdmin])


输入图片说明 输入图片说明


组件依赖 font-awesome


<link href="./src/slidercaptcha.css">

将引入样式表的 <link> 标签复制并粘贴到 <head> 中,并放在所有其他样式表之前。


<script src="./src/longbow.slidercaptcha.js"></script>

将引入脚本的 <script> 标签复制并粘贴到 <body> 最后面。



<div id="captcha"></div>


通过 javascript 初始化控件

<div id="captcha"></div>
        id: 'captcha'



<div id="captcha"></div>
        id: 'captcha',
        width: 280,
        height: 150,
        sliderL: 42,
        sliderR: 9,
        offset: 5,
        loadingText: '正在加载中...',
        failedText: '再试一次',
        barText: '向右滑动填充拼图',
        repeatIcon: 'fa fa-redo',
        setSrc: function () {
        onSuccess: function () {
        onFail: function () {

        onRefresh: function () {
名称 类型 默认值 说明
width integer 280 背景图片宽度
height integer 150 背景图标高度
sliderL integer 42 拼图宽度
sliderR integer 9 拼图突出半径
offset integer 5 验证容错偏差值 默认5个像素偏差即认为验证通过
loadingText string "正在加载中..." 图片加载时显示的文本信息
failedText string "再试一次" 验证失败时显示的文本信息
barText integer "向右滑动填充拼图" 拖动滑块准备拖动时显示的文本信息
repeatIcon string "fa fa-redo" 重新加载图标 需引用 font-awesome
setSrc function "https://picsum.photos/?image=random" 设置图片加载路径
onSuccess function null 验证通过时回调此函数
onFail function null 验证失败时回调此函数
onRefresh function null 点击重新加载图标时回调此函数
localImages function function () { return 'images/Pic' + Math.round(Math.random() * 4) + '.jpg'; } 图床图片加载失败时调用此方法返回本地图片路径
remoteUrl string null 服务器端验证请求地址,请求方式默认为 post 方式
verify function function (arr, url) { return true; } 服务器端验证方法 arr 为客户端拖动滑块轨迹,url 为服务器端请求地址,返回值为布尔值


<div id="captcha"></div>
    var captcha = sliderCaptcha({
        id: 'captcha'
Method Example Description
reset captcha.reset() 重置控件



请前往 Issue 页面添加问题



1. JavaScript

控件配置信息中有 remoteUrl 和 verify 两个配置项,合理正确的设置这两个配置项即可达到想要的服务器端认证逻辑
remoteUrl 默认值为 null 表示未启用服务器端认证方式,设置请求的 webapi 地址后启用服务器端认证方法

verify: function (arr, url) {
    var ret = false;
        url: url,
        data: JSON.stringify(arr),
        async: false,
        cache: false,
        type: 'POST',
        contentType: 'application/json',
        dataType: 'json',
        success: function (result) {
            ret = result;
    return ret;
参数 类型 默认值 说明
arr array object 客户端拖动滑块轨迹数组
url string remoteUrl 配置项中的 remoteUrl 参数值


    id: 'captcha',
    repeatIcon: 'fa fa-redo',
    setSrc: function () {
        return 'https://imgs.blazor.zone/images/Pic' + Math.round(Math.random() * 136) + '.jpg';
    onSuccess: function () {
        window.location.href = 'https://gitee.com/LongbowEnterprise/SliderCaptcha';
    remoteUrl: "api/Captcha"


1. NETCore WebApi

/// <summary>
/// 滑块服务器端验证方法
/// </summary>
public class CaptchaController : ControllerBase
    /// <summary>
    /// 服务器端滑块验证方法
    /// </summary>
    /// <returns></returns>
    public bool Post([FromBody]List<int> datas)
        var sum = datas.Sum();
        var avg = sum * 1.0 / datas.Count;
        var stddev = datas.Select(v => Math.Pow(v - avg, 2)).Sum() / datas.Count;
        return stddev != 0;

2. JAVA SpringBoot


public class SliderCaptchaController {

	public boolean isVerify(List<Integer> datas) {
		int sum = 0;
		for (Integer data : datas) {
			sum += data;
		double avg = sum * 1.0 / datas.size();
		double sum2 = 0.0;
		for (Integer data : datas) {
			sum2 += Math.pow(data - avg, 2);
		double stddev = sum2 / datas.size();
		return stddev != 0;



示例代码中演示的是前端提交用户滑动轨迹到服务器端进行了 Y 轴的平方差校验,为零时才返回 false,否则返回 true,为 true 表示 Y 轴有偏移,简单的认为此操作是人为操作,因为人手拖动过程中的抖动 Y 轴理论上是不可能没有偏移的。因此依据此值进行是否是人为拖动滑块。



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  4. 新建 Pull Request
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滑块验证码,用户通过拖动滑块完成校验,支持PC端及移动端,新增 Blazor 版本的滑块验证码 展开 收起
JavaScript 等 4 种语言






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