C#HttpHelper官方产品发布与源码下载—苏飞版
http://www.sufeinet.com/thread-3-1-1.html
在C#用HttpWebRequest中发送GET/HTTP/HTTPS请求
http://zhoufoxcn.blog.51cto.com/792419/561934/
HttpWebRequest和HttpWebResponse
http://blog.csdn.net/haitaofeiyang/article/details/18362225
///
/// 类说明：HttpHelper类，用来实现Http访问，Post或者Get方式的，直接访问，带Cookie的，带证书的等方式，可以设置代理 /// 重要提示：请不要自行修改本类，如果因为你自己修改后将无法升级到新版本。如果确实有什么问题请到官方网站提建议， /// 我们一定会及时修改 /// 编码日期：2011-09-20 /// 编 码 人：苏飞 /// 联系方式：361983679 /// 官方网址：http://www.sufeinet.com/thread-3-1-1.html
/// 修改日期：2014-04-21 /// 版 本 号：1.4.5 ///
using System; using System.Collections.Generic; using System.Text; using System.Net; using System.IO; using System.Text.RegularExpressions; using System.IO.Compression; using System.Security.Cryptography.X509Certificates; using System.Net.Security; namespace DotNet4.Utilities
{ ///
/// Http连接操作帮助类 ///
public class HttpHelper
{ #region 预定义方法或者变更
//默认的编码
private Encoding encoding = Encoding.Default; //Post数据编码
private Encoding postencoding = Encoding.Default; //HttpWebRequest对象用来发起请求
private HttpWebRequest request = null; //获取影响流的数据对象
private HttpWebResponse response = null; ///
/// 根据相传入的数据，得到相应页面数据 ///
/// 参数类对象
///
public HttpResult GetHtml(HttpItem item)
{ //返回参数
HttpResult result = new HttpResult(); try { //准备参数
SetRequest(item);
} catch (Exception ex)
{ return new HttpResult() { Cookie = string.Empty, Header = null, Html = ex.Message, StatusDescription = “配置参数时出错：” + ex.Message };
} try { #region 得到请求的response
using (response = (HttpWebResponse)request.GetResponse())
{
result.StatusCode = response.StatusCode;
result.StatusDescription = response.StatusDescription;
result.Header = response.Headers; if (response.Cookies != null) result.CookieCollection = response.Cookies; if (response.Headers[“set-cookie”] != null) result.Cookie = response.Headers[“set-cookie”]; byte[] ResponseByte = null; using (MemoryStream _stream = new MemoryStream())
{ //GZIIP处理
if (response.ContentEncoding != null && response.ContentEncoding.Equals(“gzip”, StringComparison.InvariantCultureIgnoreCase))
{ //开始读取流并设置编码方式
new GZipStream(response.GetResponseStream(), CompressionMode.Decompress).CopyTo(_stream, 10240);
} else { //开始读取流并设置编码方式
response.GetResponseStream().CopyTo(_stream, 10240);
} //获取Byte
ResponseByte = _stream.ToArray();
} if (ResponseByte != null & ResponseByte.Length > 0)
{ //是否返回Byte类型数据
if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte; //从这里开始我们要无视编码了
if (encoding == null)
{
Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), “<meta([^<]*)charset=([^<]*)[\“‘]“, RegexOptions.IgnoreCase); string c = (meta.Groups.Count > 1) ? meta.Groups[2].Value.ToLower().Trim() : string.Empty; if (c.Length > 2)
{ try { if (c.IndexOf(“ “) > 0) c = c.Substring(0, c.IndexOf(“ “));
encoding = Encoding.GetEncoding(c.Replace(“\“”, “”).Replace(“‘“, “”).Replace(“;”, “”).Replace(“iso-8859-1”, “gbk”).Trim());
} catch { if (string.IsNullOrEmpty(response.CharacterSet)) encoding = Encoding.UTF8; else encoding = Encoding.GetEncoding(response.CharacterSet);
}
} else { if (string.IsNullOrEmpty(response.CharacterSet)) encoding = Encoding.UTF8; else encoding = Encoding.GetEncoding(response.CharacterSet);
}
} //得到返回的HTML
result.Html = encoding.GetString(ResponseByte);
} else { //得到返回的HTML
result.Html = “本次请求并未返回任何数据”;
}
} #endregion } catch (WebException ex)
{ //这里是在发生异常时返回的错误信息
response = (HttpWebResponse)ex.Response;
result.Html = ex.Message; if (response != null)
{
result.StatusCode = response.StatusCode;
result.StatusDescription = response.StatusDescription;
}
} catch (Exception ex)
{
result.Html = ex.Message;
} if (item.IsToLower) result.Html = result.Html.ToLower(); return result;
} ///
/// 为请求准备参数 ///
///参数列表
private void SetRequest(HttpItem item)
{ // 验证证书
SetCer(item); //设置Header参数
if (item.Header != null && item.Header.Count > 0) foreach (string key in item.Header.AllKeys)
{
request.Headers.Add(key, item.Header[key]);
} // 设置代理
SetProxy(item); if (item.ProtocolVersion != null) request.ProtocolVersion = item.ProtocolVersion;
request.ServicePoint.Expect100Continue = item.Expect100Continue; //请求方式Get或者Post
request.Method = item.Method;
request.Timeout = item.Timeout;
request.KeepAlive = item.KeepAlive;
request.ReadWriteTimeout = item.ReadWriteTimeout; if (!string.IsNullOrWhiteSpace(item.Host))
{
request.Host = item.Host;
} //Accept
request.Accept = item.Accept; //ContentType返回类型
request.ContentType = item.ContentType; //UserAgent客户端的访问类型，包括浏览器版本和操作系统信息
request.UserAgent = item.UserAgent; // 编码
encoding = item.Encoding; //设置安全凭证
request.Credentials = item.ICredentials; //设置Cookie
SetCookie(item); //来源地址
request.Referer = item.Referer; //是否执行跳转功能
request.AllowAutoRedirect = item.Allowautoredirect; //设置Post数据
SetPostData(item); //设置最大连接
if (item.Connectionlimit > 0) request.ServicePoint.ConnectionLimit = item.Connectionlimit;
} ///
/// 设置证书 ///
///
private void SetCer(HttpItem item)
{ if (!string.IsNullOrWhiteSpace(item.CerPath))
{ //这一句一定要写在创建连接的前面。使用回调的方法进行证书验证。
ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult); //初始化对像，并设置请求的URL地址
request = (HttpWebRequest)WebRequest.Create(item.URL);
SetCerList(item); //将证书添加到请求里
request.ClientCertificates.Add(new X509Certificate(item.CerPath));
} else { //初始化对像，并设置请求的URL地址
request = (HttpWebRequest)WebRequest.Create(item.URL);
SetCerList(item);
}
} ///
/// 设置多个证书 ///
///
private void SetCerList(HttpItem item)
{ if (item.ClentCertificates != null && item.ClentCertificates.Count > 0)
{ foreach (X509Certificate c in item.ClentCertificates)
{
request.ClientCertificates.Add(c);
}
}
} ///
/// 设置Cookie ///
/// Http参数
private void SetCookie(HttpItem item)
{ if (!string.IsNullOrEmpty(item.Cookie)) request.Headers[HttpRequestHeader.Cookie] = item.Cookie; //设置CookieCollection
if (item.ResultCookieType == ResultCookieType.CookieCollection)
{
request.CookieContainer = new CookieContainer(); if (item.CookieCollection != null && item.CookieCollection.Count > 0)
request.CookieContainer.Add(item.CookieCollection);
}
} ///
/// 设置Post数据 ///
/// Http参数
private void SetPostData(HttpItem item)
{ //验证在得到结果时是否有传入数据
if (request.Method.Trim().ToLower().Contains(“post”))
{ if (item.PostEncoding != null)
{
postencoding = item.PostEncoding;
} byte[] buffer = null; //写入Byte类型
if (item.PostDataType == PostDataType.Byte && item.PostdataByte != null && item.PostdataByte.Length > 0)
{ //验证在得到结果时是否有传入数据
buffer = item.PostdataByte;
}//写入文件
else if (item.PostDataType == PostDataType.FilePath && !string.IsNullOrWhiteSpace(item.Postdata))
{
StreamReader r = new StreamReader(item.Postdata, postencoding);
buffer = postencoding.GetBytes(r.ReadToEnd());
r.Close();
} //写入字符串
else if (!string.IsNullOrWhiteSpace(item.Postdata))
{
buffer = postencoding.GetBytes(item.Postdata);
} if (buffer != null)
{
request.ContentLength = buffer.Length;
request.GetRequestStream().Write(buffer, 0, buffer.Length);
}
}
} ///
/// 设置代理 ///
/// 参数对象
private void SetProxy(HttpItem item)
{ bool isIeProxy = false; if (!string.IsNullOrWhiteSpace(item.ProxyIp))
{
isIeProxy = item.ProxyIp.ToLower().Contains(“ieproxy”);
} if (!string.IsNullOrWhiteSpace(item.ProxyIp) && !isIeProxy)
{ //设置代理服务器
if (item.ProxyIp.Contains(“:”))
{ string[] plist = item.ProxyIp.Split(‘:’);
WebProxy myProxy = new WebProxy(plist[0].Trim(), Convert.ToInt32(plist[1].Trim())); //建议连接
myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd); //给当前请求对象
request.Proxy = myProxy;
} else {
WebProxy myProxy = new WebProxy(item.ProxyIp, false); //建议连接
myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd); //给当前请求对象
request.Proxy = myProxy;
}
} else if (isIeProxy)
{ //设置为IE代理
} else {
request.Proxy = item.WebProxy;
}
} ///
/// 回调验证证书问题 ///
/// 流对象
/// 证书
/// X509Chain
/// SslPolicyErrors
///
public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; } #endregion } ///
/// Http请求参考类 ///
public class HttpItem
{ ///
/// 请求URL必须填写 ///
public string URL { get; set; } string _Method = “GET”; ///
/// 请求方式默认为GET方式,当为POST方式时必须设置Postdata的值 ///
public string Method
{ get { return _Method; } set { _Method = value; }
} int _Timeout = 100000; ///
/// 默认请求超时时间 ///
public int Timeout
{ get { return _Timeout; } set { _Timeout = value; }
} int _ReadWriteTimeout = 30000; ///
/// 默认写入Post数据超时间 ///
public int ReadWriteTimeout
{ get { return _ReadWriteTimeout; } set { _ReadWriteTimeout = value; }
} ///
/// 设置Host的标头信息 ///
public string Host { get; set; }
Boolean _KeepAlive = true; ///
/// 获取或设置一个值，该值指示是否与 Internet 资源建立持久性连接默认为true。 ///
public Boolean KeepAlive
{ get { return _KeepAlive; } set { _KeepAlive = value; }
} string _Accept = “text/html, application/xhtml+xml, */*“; ///
/// 请求标头值 默认为text/html, application/xhtml+xml, */* ///
public string Accept
{ get { return _Accept; } set { _Accept = value; }
} string _ContentType = “text/html”; ///
/// 请求返回类型默认 text/html ///
public string ContentType
{ get { return _ContentType; } set { _ContentType = value; }
} string _UserAgent = “Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)”; ///
/// 客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0) ///
public string UserAgent
{ get { return _UserAgent; } set { _UserAgent = value; }
} ///
/// 返回数据编码默认为NUll,可以自动识别,一般为utf-8,gbk,gb2312 ///
public Encoding Encoding { get; set; } private PostDataType _PostDataType = PostDataType.String; ///
/// Post的数据类型 ///
public PostDataType PostDataType
{ get { return _PostDataType; } set { _PostDataType = value; }
} ///
/// Post请求时要发送的字符串Post数据 ///
public string Postdata { get; set; } ///
/// Post请求时要发送的Byte类型的Post数据 ///
public byte[] PostdataByte { get; set; } ///
/// Cookie对象集合 ///
public CookieCollection CookieCollection { get; set; } ///
/// 请求时的Cookie ///
public string Cookie { get; set; } ///
/// 来源地址，上次访问地址 ///
public string Referer { get; set; } ///
/// 证书绝对路径 ///
public string CerPath { get; set; } ///
/// 设置代理对象，不想使用IE默认配置就设置为Null，而且不要设置ProxyIp ///
public WebProxy WebProxy { get; set; } private Boolean isToLower = false; ///
/// 是否设置为全文小写，默认为不转化 ///
public Boolean IsToLower
{ get { return isToLower; } set { isToLower = value; }
} private Boolean allowautoredirect = false; ///
/// 支持跳转页面，查询结果将是跳转后的页面，默认是不跳转 ///
public Boolean Allowautoredirect
{ get { return allowautoredirect; } set { allowautoredirect = value; }
} private int connectionlimit = 1024; ///
/// 最大连接数 ///
public int Connectionlimit
{ get { return connectionlimit; } set { connectionlimit = value; }
} ///
/// 代理Proxy 服务器用户名 ///
public string ProxyUserName { get; set; } ///
/// 代理 服务器密码 ///
public string ProxyPwd { get; set; } ///
/// 代理 服务IP,如果要使用IE代理就设置为ieproxy ///
public string ProxyIp { get; set; } private ResultType resulttype = ResultType.String; ///
/// 设置返回类型String和Byte ///
public ResultType ResultType
{ get { return resulttype; } set { resulttype = value; }
} private WebHeaderCollection header = new WebHeaderCollection(); ///
/// header对象 ///
public WebHeaderCollection Header
{ get { return header; } set { header = value; }
} ///
// 获取或设置用于请求的 HTTP 版本。返回结果:用于请求的 HTTP 版本。默认为 System.Net.HttpVersion.Version11。
///
public Version ProtocolVersion { get; set; } private Boolean _expect100continue = true; ///
/// 获取或设置一个 System.Boolean 值，该值确定是否使用 100-Continue 行为。如果 POST 请求需要 100-Continue 响应，则为 true；否则为 false。默认值为 true。 ///
public Boolean Expect100Continue
{ get { return _expect100continue; } set { _expect100continue = value; }
} ///
/// 设置509证书集合 ///
public X509CertificateCollection ClentCertificates { get; set; } ///
/// 设置或获取Post参数编码,默认的为Default编码 ///
public Encoding PostEncoding { get; set; } private ResultCookieType _ResultCookieType = ResultCookieType.String; ///
/// Cookie返回类型,默认的是只返回字符串类型 ///
public ResultCookieType ResultCookieType
{ get { return _ResultCookieType; } set { _ResultCookieType = value; }
} private ICredentials _ICredentials = CredentialCache.DefaultCredentials; ///
/// 获取或设置请求的身份验证信息。 ///
public ICredentials ICredentials
{ get { return _ICredentials; } set { _ICredentials = value; }
}
} ///
/// Http返回参数类 ///
public class HttpResult
{ ///
/// Http请求返回的Cookie ///
public string Cookie { get; set; } ///
/// Cookie对象集合 ///
public CookieCollection CookieCollection { get; set; } ///
/// 返回的String类型数据 只有ResultType.String时才返回数据，其它情况为空 ///
public string Html { get; set; } ///
/// 返回的Byte数组 只有ResultType.Byte时才返回数据，其它情况为空 ///
public byte[] ResultByte { get; set; } ///
/// header对象 ///
public WebHeaderCollection Header { get; set; } ///
/// 返回状态说明 ///
public string StatusDescription { get; set; } ///
/// 返回状态码,默认为OK ///
public HttpStatusCode StatusCode { get; set; }
} ///
/// 返回类型 ///
public enum ResultType
{ ///
/// 表示只返回字符串 只有Html有数据 ///
String, ///
/// 表示返回字符串和字节流 ResultByte和Html都有数据返回 ///
Byte
} ///
/// Post的数据格式默认为string ///
public enum PostDataType
{ ///
/// 字符串类型，这时编码Encoding可不设置 ///
String, ///
/// Byte类型，需要设置PostdataByte参数的值编码Encoding可设置为空 ///
Byte, ///
/// 传文件，Postdata必须设置为文件的绝对路径，必须设置Encoding的值 ///
FilePath
} ///
/// Cookie返回类型 ///
public enum ResultCookieType
{ ///
/// 只返回字符串类型的Cookie ///
String, ///
/// CookieCollection格式的Cookie集合同时也返回String类型的cookie ///
CookieCollection
}
}
