这里只是演示简单的处理，不同的网站需要针对性的提交，参考这个解决思路即可，不要生搬硬套。
感谢DEMO提供者笑嘻嘻同学，如果您有其他语言DEMO欢迎提供给客服，我们将赠送10万点数做为感谢。
DEMO文件下载：
DEMO源码：
using System;
using System.IO;
using System.Net;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Threading;
namespace GoogleOTP
{
class Program
{
private const string clientKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; //YesCaptcha的Token值 网站可查
private const string websiteURL = "https://www.google.com/recaptcha/api2/demo"; //需要破解验证码网站的链接
private const string websiteKey = "6LfLuZ8aAAAAAK8VxR1Nk1rwA-LEALM99o2r3Ujd"; //需要破解验证码网站的site_key 须替换成自己的 YesCaptcha官网有查询方法
private const string createTask_URL = "https://api.yescaptcha.com/createTask"; //创建识别任务的API路径
private const string getTaskResult_URL = "https://api.yescaptcha.com/getTaskResult"; //获取识别结果的API路径
private const string task_type = "NoCaptchaTaskProxyless"; //根据验证码类型，YesCaptcha官网有查询方法
static void Main(string[] args)
{
string taskid = create_task(); //创建识别任务 获取taskId
string response = get_response(taskid); //获取识别结果
//将response填入textarea后提交......
}
/// <summary>
/// 创建识别任务 获取taskId
/// </summary>
/// <param name="url">createTask_URL</param>
/// <returns>taskId字符串</returns>
private static string create_task()
{
try
{
string data = "{\"clientKey\":\"" + clientKey + "\",\"task\":{\"websiteURL\":\"" + websiteURL + "\",\"websiteKey\":\"" + websiteKey + "\",\"type\":\"" + task_type + "\"}}";
string result = HttpPost(createTask_URL, data);
SerializeHelper ser = new SerializeHelper();
YesCreateTsak yes = ser.JsonDeserialize<YesCreateTsak>(result);
return yes.taskId;
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 获取识别结果 RecaptchaResponse
/// 每个任务限制最多120 次请求
/// 每个任务创建后 5 分钟内可以查询
/// </summary>
/// <param name="url">getTaskResult_URL</param>
/// <param name="taskid">识别任务获取到的taskId</param>
/// <returns>yes.solution.gRecaptchaResponse</returns>
private static string get_response(string taskid)
{
string data = "{\"clientKey\":\"" + clientKey + "\",\"taskId\":\"" + taskid + "\"}";
string result = "";
string gRecaptchaResponse = "";
for (int i = 0; i < 120; i++)
{
result = HttpPost(getTaskResult_URL, data);
SerializeHelper ser = new SerializeHelper();
YesGetTaskResult yes = ser.JsonDeserialize<YesGetTaskResult>(result);
if (yes.errorId == 0) //正在识别或者识别完成
{
if (yes.status == "processing")//正在识别中
{
//需要做的动作
}
else
{
//识别完成
gRecaptchaResponse = yes.solution.gRecaptchaResponse;
}
}
else //识别失败
{
//需要做的动作
}
i++;
Thread.Sleep(TimeSpan.FromSeconds(3));//暂停线程三秒
}
return gRecaptchaResponse;
}
/// <summary>
/// Http Post提交
/// </summary>
/// <param name="posturl"></param>
/// <param name="postData"></param>
/// <returns></returns>
public static string HttpPost(string posturl, string postData)
{
Stream outstream = null;
Stream instream = null;
StreamReader sr = null;
HttpWebResponse response = null;
HttpWebRequest request = null;
Encoding encoding = System.Text.Encoding.GetEncoding("utf-8");
byte[] data = encoding.GetBytes(postData);
// 准备请求...
try
{
// 设置参数
request = WebRequest.Create(posturl) as HttpWebRequest;
CookieContainer cookieContainer = new CookieContainer();
request.CookieContainer = cookieContainer;
request.AllowAutoRedirect = true;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = data.Length;
outstream = request.GetRequestStream();
outstream.Write(data, 0, data.Length);
outstream.Close();
//发送请求并获取相应回应数据
response = request.GetResponse() as HttpWebResponse;
//直到request.GetResponse()程序才开始向目标网页发送Post请求
instream = response.GetResponseStream();
sr = new StreamReader(instream, encoding);
//返回结果网页（html）代码
string content = sr.ReadToEnd();
string err = string.Empty;
return content;
}
catch (Exception ex)
{
string err = ex.Message;
return string.Empty;
}
}
}
/// <summary>
/// CreateTask实体类
/// </summary>
public class YesCreateTsak
{
public string errorId { get; set; }
public string errorCode { get; set; }
public string errorDescription { get; set; }
public string taskId { get; set; }
}
/// <summary>
/// GetTaskResult实体类
/// </summary>
public class YesGetTaskResult
{
public int errorId { get; set; }
public string errorCode { get; set; }
public string errorDescription { get; set; }
public string status { get; set; }
public solution solution { get; set; }
}
/// <summary>
/// solution实体类
/// </summary>
public class solution
{
public string gRecaptchaResponse { get; set; }
}
/// <summary>
/// 序列化
/// </summary>
public class SerializeHelper
{
//System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
public readonly static SerializeHelper Instance = new SerializeHelper();
/// <summary>
/// 将C#数据实体转化为JSON数据
/// </summary>
/// <param name="obj">要转化的数据实体</param>
/// <returns>JSON格式字符串</returns>
public string JsonSerialize<T>(T obj)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
MemoryStream stream = new MemoryStream();
serializer.WriteObject(stream, obj);
stream.Position = 0;
StreamReader sr = new StreamReader(stream);
string resultStr = sr.ReadToEnd();
sr.Close();
stream.Close();
return resultStr;
}
/// <summary>
/// 将JSON数据转化为C#数据实体
/// </summary>
/// <param name="json">符合JSON格式的字符串</param>
/// <returns>T类型的对象</returns>
public T JsonDeserialize<T>(string json)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
MemoryStream ms = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(json.ToCharArray()));
T obj = (T)serializer.ReadObject(ms);
ms.Close();
return obj;
}
}
}