asp.net core 騰訊驗證碼的接入

Intro

之前使用的驗證碼服務是用的極驗驗證，而且是比較舊的，好久之前接入的，而且驗證碼服務依賴 Session，有點不太靈活，后來發(fā)現(xiàn)騰訊也有驗證碼服務，而且支持小程序，并且是唯一支持小程序的驗證碼。。（壟斷么。。）

而且相比之下，騰訊驗證碼不需要依賴 Session，集成起來也比較方便，于是就用了騰訊驗證碼，詳細參考：https://007.qq.com/product.html?ADTAG=index.block

驗證流程

服務器端接入

using System.ComponentModel.DataAnnotations; using System.Net.Http; using System.Threading.Tasks; using Microsoft.Extensions.Logging; using Microsoft.Extensions.Options; using Newtonsoft.Json; using WeihanLi.Extensions; namespace ActivityReservation.Common { public class TencentCaptchaOptions { /// <summary> /// 客戶端AppId /// </summary> [Required] public string AppId { get; set; } /// <summary> /// App Secret Key /// </summary> [Required] public string AppSecret { get; set; } } public class TencentCaptchaRequest { /// <summary> /// 驗證碼客戶端驗證回調(diào)的票據(jù) /// </summary> public string Ticket { get; set; } /// <summary> /// 驗證碼客戶端驗證回調(diào)的隨機串 /// </summary> public string Nonce { get; set; } /// <summary> /// 提交驗證的用戶的IP地址（eg: 10.127.10.2） /// </summary> public string UserIP { get; set; } } public class TencentCaptchaHelper { private class TencentCaptchaResponse { /// <summary> /// 1:驗證成功，0:驗證失敗，100:AppSecretKey參數(shù)校驗錯誤 /// </summary> [JsonProperty("response")] public int Code { get; set; } /// <summary> /// 惡意等級 [0, 100] /// </summary> [JsonProperty("evil_level")] public string EvilLevel { get; set; } /// <summary> /// 錯誤信息 /// </summary> [JsonProperty("err_msg")] public string ErrorMsg { get; set; } } private const string TencentCaptchaVerifyUrl = "https://ssl.captcha.qq.com/ticket/verify"; private readonly TencentCaptchaOptions _captchaOptions; private readonly ILogger _logger; private readonly HttpClient _httpClient; public TencentCaptchaHelper( IOptions<TencentCaptchaOptions> option, ILogger<TencentCaptchaHelper> logger, HttpClient httpClient) { _captchaOptions = option.Value; _logger = logger; _httpClient = httpClient; } public async Task<bool> IsValidRequestAsync(TencentCaptchaRequest request) { // 參考文檔：https://007.qq.com/captcha/#/gettingStart var response = await _httpClient.GetAsync( $"{TencentCaptchaVerifyUrl}?aid={_captchaOptions.AppId}&AppSecretKey={_captchaOptions.AppSecret}&Ticket={request.Ticket}&Randstr={request.Nonce}&UserIP={request.UserIP}"); var responseText = await response.Content.ReadAsStringAsync(); if (responseText.IsNotNullOrEmpty()) { _logger.Debug($"Tencent captcha verify response:{responseText}"); var result = responseText.JsonToType<TencentCaptchaResponse>(); if (result.Code == 1) { return true; } } return false; } } }

Startup 配置：

services.AddHttpClient<TencentCaptchaHelper>(client => client.Timeout = TimeSpan.FromSeconds(3)) .ConfigurePrimaryHttpMessageHandler(() => new NoProxyHttpClientHandler()); services.AddTencentCaptchaHelper(options => { options.AppId = Configuration["Tencent:Captcha:AppId"]; options.AppSecret = Configuration["Tencent:Captcha:AppSecret"]; });

前端接入

前端接入這里不作多介紹了，接入方式多種多樣，具體可以參考官方文檔：https://cloud.tencent.com/document/product/1110/36841

下面的代碼是 angular spa 在前端接入的核心代碼

private loadCaptcha(): void { var tCaptcha = document.getElementById("tCaptcha"); if (tCaptcha) { this.InitCaptcha(); return; } let script = <any>document.createElement('script'); script.id = "tCaptcha"; script.type = 'text/javascript'; script.src = "https://ssl.captcha.qq.com/TCaptcha.js" if (script.readyState) { //IE script.onreadystatechange = () => { if (script.readyState === "loaded" || script.readyState === "complete") { this.InitCaptcha(); } }; } else { //Others script.onload = () => { this.InitCaptcha(); }; } document.getElementsByTagName('body')[0].appendChild(script); } private InitCaptcha(): void { let captchaDom = document.getElementById('TencentCaptcha1'); if (!captchaDom) { return; } this.tencentRecaptcha = new TencentCaptcha( captchaDom, appId, (res) => { this.captchaValid = false; console.log(res); // res（用戶主動關閉驗證碼）= {ret: 2, ticket: null} // res（驗證成功） = {ret: 0, ticket: "String", randstr: "String"} if (res.ret === 0) { this.captchaInfo.nonce = res.randstr; this.captchaInfo.ticket = res.ticket; this.captchaValid = true; this.tencentRecaptcha.destroy(); let button = <HTMLElement>document.getElementById("btnSubmit"); button.click(); } } ); console.log(`captcha inited`); this.tencentRecaptcha.show(); }

使用效果：

老版網(wǎng)站接入效果：

Reference

• https://github.com/WeihanLi/ActivityReservation

• https://reservation.weihanli.xyz/Home/Reservate

• https://reservation-client.weihanli.xyz/reservation/new

• https://cloud.tencent.com/document/product/1110/36841

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