c# winform实现网页上用户自动登陆,模拟网站登录

using System; 

002	using System.Collections.Generic;

003	using System.Text;

004	using System.Net;

005	using System.IO;

006

007	namespace Czt.Web

008

{

009	/// <summary>

010	/// 实现网站登录类

011	/// </summary>

012	public class Post

013

{

014	/// <summary>

015	/// 网站Cookies

016	/// </summary>

017	private string _cookieHeader = string.Empty;

018	public string CookieHeader

019

{

020

get

021

{

022	return _cookieHeader;

023

}

024

set

025

{

026	_cookieHeader = value;

027

}

028

}

029	/// <summary>

030

/// 网站编码

031	/// </summary>

032	private string _code = string.Empty;

033	public string Code

034

{

035	get { return _code; }

036	set { _code = value; }

037

}

038

039

040	private string _pageContent = string.Empty;

041	public string PageContent

042

{

043	get { return _pageContent; }

044	set { _pageContent = value; }

045

}

046

047	private Dictionary<string, string> _para = new Dictionary<string, string>();

048	public Dictionary<string, string> Para

049

{

050	get { return _para; }

051	set { _para = value; }

052

}

053

054

055

/**/

056	/// <summary>

057	/// 功能描述：模拟登录页面，提交登录数据进行登录，并记录Header中的cookie

058	/// </summary>

059	/// <param name="strURL">登录数据提交的页面地址</param>

060	/// <param name="strArgs">用户登录数据</param>

061	/// <param name="strReferer">引用地址</param>

062	/// <param name="code">网站编码</param>

063	/// <returns>可以返回页面内容或不返回</returns>

064	public string PostData(string strURL, string strArgs, string strReferer, string code, string method)

065

{

066	return  PostData(strURL,  strArgs,  strReferer,  code,  method, string.Empty);

067

}

068	public string PostData(string strURL, string strArgs, string strReferer, string code, string method, string contentType)

069

{

070

try

071

{

072	string strResult = "";

073	HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(strURL);

074	myHttpWebRequest.AllowAutoRedirect = true;

075	myHttpWebRequest.KeepAlive = true;

076	myHttpWebRequest.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, */*";

077	myHttpWebRequest.Referer = strReferer;

078

079

080	myHttpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 2.0.50727)";

081

082	if (string.IsNullOrEmpty(contentType))

083

{

084	myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";

085

}

086

else

087

{

088	myHttpWebRequest.ContentType = "contentType";

089

}

090

091	myHttpWebRequest.Method = method;

092

093	myHttpWebRequest.Headers.Add("Accept-Encoding", "gzip, deflate");

094

095	if (myHttpWebRequest.CookieContainer == null)

096

{

097	myHttpWebRequest.CookieContainer = new CookieContainer();

098

}

099

100	if (this.CookieHeader.Length > 0)

101

{

102	myHttpWebRequest.Headers.Add("cookie:" + this.CookieHeader);

103	myHttpWebRequest.CookieContainer.SetCookies(new Uri(strURL), this.CookieHeader);

104

}

105

106

107

108	byte[] postData = Encoding.GetEncoding(code).GetBytes(strArgs);

109	myHttpWebRequest.ContentLength = postData.Length;

110

111	System.IO.Stream PostStream = myHttpWebRequest.GetRequestStream();

112	PostStream.Write(postData, 0, postData.Length);

113	PostStream.Close();

114

115	HttpWebResponse response = null;

116	System.IO.StreamReader sr = null;

117	response = (HttpWebResponse)myHttpWebRequest.GetResponse();

118

119

120

121	if (myHttpWebRequest.CookieContainer != null)

122

{

123	this.CookieHeader = myHttpWebRequest.CookieContainer.GetCookieHeader(new Uri(strURL));

124

}

125

126	sr = new System.IO.StreamReader(response.GetResponseStream(), Encoding.GetEncoding(code));    //    //utf-8

127	strResult = sr.ReadToEnd();

128	sr.Close();

129	response.Close();

130	return strResult;

131

}

132	catch (Exception ex)

133

{

134	Utilities.Document.Create("C:\\error.log", strArgs, true, Encoding.UTF8);

135

}

136	return string.Empty;

137

}

138

139

/**/

140	/// <summary>

141	/// 功能描述：在PostLogin成功登录后记录下Headers中的cookie，然后获取此网站上其他页面的内容

142	/// </summary>

143	/// <param name="strURL">获取网站的某页面的地址</param>

144	/// <param name="strReferer">引用的地址</param>

145	/// <returns>返回页面内容</returns>

146	public string GetPage(string strURL, string strReferer, string code)

147

{

148	return GetPage(strURL, strReferer,code,string.Empty);

149

}

150	public string GetPage(string strURL, string strReferer,string code,string contentType)

151

{

152	string strResult = "";

153	HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(strURL);

154	myHttpWebRequest.AllowAutoRedirect = true;

155	myHttpWebRequest.KeepAlive = false;

156	myHttpWebRequest.Accept = "*/*";

157	myHttpWebRequest.Referer = strReferer;

158	myHttpWebRequest.Headers.Add("Accept-Encoding", "gzip, deflate");

159

160	myHttpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 2.0.50727)";

161	if (string.IsNullOrEmpty(contentType))

162

{

163	myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";

164

}

165

else

166

{

167	myHttpWebRequest.ContentType = contentType;

168

}

169	myHttpWebRequest.Method = "GET";

170

171	if (myHttpWebRequest.CookieContainer == null)

172

{

173	myHttpWebRequest.CookieContainer = new CookieContainer();

174

}

175

176	if (this.CookieHeader.Length > 0)

177

{

178	myHttpWebRequest.Headers.Add("cookie:" + this.CookieHeader);

179	myHttpWebRequest.CookieContainer.SetCookies(new Uri(strURL), this.CookieHeader);

180

}

181

182

183	HttpWebResponse response = null;

184	System.IO.StreamReader sr = null;

185	response = (HttpWebResponse)myHttpWebRequest.GetResponse();

186

187

188	Stream streamReceive;

189	string gzip = response.ContentEncoding;

190

191	if (string.IsNullOrEmpty(gzip) || gzip.ToLower() != "gzip")

192

{

193	streamReceive = response.GetResponseStream();

194

}

195

else

196

{

197	streamReceive = new System.IO.Compression.GZipStream(response.GetResponseStream(), System.IO.Compression.CompressionMode.Decompress);

198

}

199

200	sr = new System.IO.StreamReader(streamReceive, Encoding.GetEncoding(code));

201

202	if (response.ContentLength > 1)

203

{

204	strResult = sr.ReadToEnd();

205

}

206

else

207

{

208	char[] buffer=new char[256];

209	int count = 0;

210	StringBuilder sb = new StringBuilder();

211	while ((count = sr.Read(buffer, 0, buffer.Length)) > 0)

212

{

213	sb.Append(new string(buffer));

214

}

215	strResult = sb.ToString();

216

}

217	sr.Close();

218	response.Close();

219	return strResult;

220

}

221

222

}

223

}