/// <summary>
/// 简单HTTP POST方法,用于post验证码，Content-Type: application/x-www-form-urlencoded
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
public string Post(string url, WebHeaderCollection headers, string postData, bool isUseCookie = false)
{
string responseText = "";
try
{
var request = (HttpWebRequest)WebRequest.Create(url);
foreach (string key in headers.Keys)
{
switch (key.ToLower())
{
case "user-agent":
request.UserAgent = headers[key];
break;
case "referer":
request.Referer = headers[key];
break;
case "host":
request.Host = headers[key];
break;
case "contenttype":
request.ContentType = headers[key];
break;
default:
break;
}
}
if (string.IsNullOrEmpty(request.Referer))
{
request.Referer = "http://weixin.sogou.com/";
}
;
if (string.IsNullOrEmpty(request.Host))
{
request.Host = "weixin.sogou.com";
}
;
if (isUseCookie)
{
request.CookieContainer = new CookieContainer();
CookieCollection cc = Tools.LoadCookieFromCache();
request.CookieContainer.Add(cc);
}
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream inDataStream = request.GetRequestStream();
// Write the data to the request stream.
inDataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
inDataStream.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (isUseCookie && response.Cookies.Count > 0)
{
var cookieCollection = response.Cookies;
WechatCache cache = new WechatCache(Config.CacheDir, 3000);
if (!cache.Add("cookieCollection", cookieCollection, 3000))
{
cache.Update("cookieCollection", cookieCollection, 3000);
}
;
}
// Get the stream containing content returned by the server.
Stream outDataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(outDataStream);
// Read the content.
responseText = reader.ReadToEnd();
// Cleanup the streams and the response.
reader.Close();
outDataStream.Close();
response.Close();
}
catch (Exception e)
{
logger.Error(e);
}
return(responseText);
}
string _vcode_url = ""; //需要填验证码的url
/// <summary>
/// 指定header参数的HTTP Get方法
/// </summary>
/// <param name="headers"></param>
/// <param name="url"></param>
/// <returns>respondse</returns>
public string Get(WebHeaderCollection headers, string url, string responseEncoding = "UTF-8", bool isUseCookie = false)
{
string responseText = "";
try
{
var request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
//request.Headers = headers;
foreach (string key in headers.Keys)
{
switch (key.ToLower())
{
case "user-agent":
request.UserAgent = headers[key];
break;
case "referer":
request.Referer = headers[key];
break;
case "host":
request.Host = headers[key];
break;
case "contenttype":
request.ContentType = headers[key];
break;
case "accept":
request.Accept = headers[key];
break;
default:
break;
}
}
if (string.IsNullOrEmpty(request.Referer))
{
request.Referer = "http://weixin.sogou.com/";
}
;
if (string.IsNullOrEmpty(request.Host))
{
request.Host = "weixin.sogou.com";
}
;
if (string.IsNullOrEmpty(request.UserAgent))
{
Random r = new Random();
int index = r.Next(WechatSogouBasic._agent.Count - 1);
request.UserAgent = WechatSogouBasic._agent[index];
}
if (isUseCookie)
{
CookieCollection cc = Tools.LoadCookieFromCache();
request.CookieContainer = new CookieContainer();
request.CookieContainer.Add(cc);
}
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (isUseCookie && response.Cookies.Count > 0)
{
var cookieCollection = response.Cookies;
WechatCache cache = new WechatCache(Config.CacheDir, 3000);
if (!cache.Add("cookieCollection", cookieCollection, 3000))
{
cache.Update("cookieCollection", cookieCollection, 3000);
}
;
}
// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
//如果response是图片，则返回以base64方式返回图片内容，否则返回html内容
if (response.Headers.Get("Content-Type") == "image/jpeg" || response.Headers.Get("Content-Type") == "image/jpg")
{
//totest
Image img = Image.FromStream(dataStream, true);
using (MemoryStream ms = new MemoryStream())
{
img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] imageBytes = ms.ToArray();
string base64String = Convert.ToBase64String(imageBytes);
responseText = base64String;
}
}
else //read response string
{
// Open the stream using a StreamReader for easy access.
Encoding encoding;
switch (responseEncoding.ToLower())
{
case "utf-8":
encoding = Encoding.UTF8;
break;
case "unicode":
encoding = Encoding.Unicode;
break;
case "ascii":
encoding = Encoding.ASCII;
break;
default:
encoding = Encoding.Default;
break;
}
StreamReader reader = new StreamReader(dataStream, encoding);//System.Text.Encoding.Default
// Read the content.
if (response.StatusCode == HttpStatusCode.OK)
{
responseText = reader.ReadToEnd();
if (responseText.Contains("用户您好，您的访问过于频繁，为确认本次访问为正常用户行为，需要您协助验证"))
{
_vcode_url = url;
throw new Exception("weixin.sogou.com verification code");
}
}
else
{
logger.Error("requests status_code error" + response.StatusCode);
throw new Exception("requests status_code error");
}
reader.Close();
}
// Cleanup the streams and the response.
dataStream.Close();
response.Close();
}
catch (Exception e)
{
logger.Error(e);
}
return(responseText);
}