达维营-前端网public class HttpHelper
{
#region 预定义方变量
//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;
//设置本地的出口ip和端口
private IPEndPoint _ipEndPoint = null;
#endregion
#region Public
/// <summary>
/// 根据相传入的数据，得到相应页面数据
/// </summary>
/// <param name="item">参数类对象</param>
/// <returns>返回HttpResult类型</returns>
public HttpResult GetHtml(HttpItem item)
{
//返回参数
HttpResult result = new HttpResult();
try
{
//准备参数
SetRequest(item);
}
catch (Exception ex)
{
result.Cookie = string.Empty;
result.Header = null;
result.Html = ex.Message;
result.StatusDescription = "配置参数时出错：" + ex.Message;
//配置参数时出错
return result;
}
try
{
//请求数据
using (_response = (HttpWebResponse)_request.GetResponse())
{
GetData(item, result);
}
}
catch (WebException ex)
{
if (ex.Response != null)
{
using (_response = (HttpWebResponse)ex.Response)
{
GetData(item, result);
}
}
else
{
result.Html = ex.Message;
}
}
catch (Exception ex)
{
result.Html = ex.Message;
}
if (item.IsToLower)
result.Html = result.Html.ToLower();
return result;
}
#endregion
#region GetData
/// <summary>
/// 获取数据的并解析的方法
/// </summary>
/// <param name="item"></param>
/// <param name="result"></param>
private void GetData(HttpItem item, HttpResult result)
{
#region base
//获取StatusCode
result.StatusCode = _response.StatusCode;
//获取StatusDescription
result.StatusDescription = _response.StatusDescription;
//获取最后访问的URl
result.ResponseUri = _response.ResponseUri.ToString();
//获取Headers
result.Header = _response.Headers;
//获取CookieCollection
if (_response.Cookies != null) result.CookieCollection = _response.Cookies;
//获取set-cookie
if (_response.Headers["set-cookie"] != null) result.Cookie = _response.Headers["set-cookie"];
#endregion
#region byte
//处理网页Byte
byte[] responseByte = GetByte();
#endregion
#region Html
if (responseByte != null && responseByte.Length > 0)
{
//设置编码
SetEncoding(item, result, responseByte);
//得到返回的HTML
result.Html = _encoding.GetString(responseByte);
}
else
{
//没有返回任何Html代码
result.Html = string.Empty;
}
#endregion
}
/// <summary>
/// 设置编码
/// </summary>
/// <param name="item">HttpItem</param>
/// <param name="result">HttpResult</param>
/// <param name="responseByte">byte[]</param>
private void SetEncoding(HttpItem item, HttpResult result, byte[] responseByte)
{
//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 = string.Empty;
if (meta != null && meta.Groups.Count > 0)
{
c = meta.Groups[1].Value.ToLower().Trim();
}
if (c.Length > 2)
{
try
{
_encoding = Encoding.GetEncoding(c.Replace("\"", string.Empty).Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk").Trim());
}
catch
{
_encoding = string.IsNullOrEmpty(_response.CharacterSet) ? Encoding.UTF8 : Encoding.GetEncoding(_response.CharacterSet);
}
}
else
{
_encoding = string.IsNullOrEmpty(_response.CharacterSet) ? Encoding.UTF8 : Encoding.GetEncoding(_response.CharacterSet);
}
}
}
/// <summary>
/// 提取网页Byte
/// </summary>
/// <returns></returns>
private byte[] GetByte()
{
byte[] responseByte = null;
MemoryStream stream;
//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
stream = GetMemoryStream(new GZipStream(_response.GetResponseStream(), CompressionMode.Decompress));
}
else
{
//开始读取流并设置编码方式
stream = GetMemoryStream(_response.GetResponseStream());
}
//获取Byte
responseByte = stream.ToArray();
stream.Close();
return responseByte;
}
/// <summary>
/// 4.0以下.net版本取数据使用
/// </summary>
/// <param name="streamResponse">流</param>
private MemoryStream GetMemoryStream(Stream streamResponse)
{
MemoryStream stream = new MemoryStream();
int Length = 256;
Byte[] buffer = new Byte[Length];
int bytesRead = streamResponse.Read(buffer, 0, Length);
while (bytesRead > 0)
{
stream.Write(buffer, 0, bytesRead);
bytesRead = streamResponse.Read(buffer, 0, Length);
}
return stream;
}
#endregion
#region SetRequest
/// <summary>
/// 为请求准备参数
/// </summary>
///<param name="item">参数列表</param>
private void SetRequest(HttpItem item)
{
// 验证证书
SetCer(item);
if (item.IPEndPoint != null)
{
_ipEndPoint = item.IPEndPoint;
//设置本地的出口ip和端口
_request.ServicePoint.BindIPEndPointDelegate = new BindIPEndPoint(BindIPEndPointCallback);
}
//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)
{
//获取或设置用于请求的 HTTP 版本
_request.ProtocolVersion = item.ProtocolVersion;
}
//获取或设置一个 System.Boolean 值，该值确定是否使用 100-Continue 行为
_request.ServicePoint.Expect100Continue = item.Expect100Continue;
//请求方式Get或者Post
_request.Method = item.Method;
//请求超时时间
_request.Timeout = item.Timeout;
//是否建立永久链接
_request.KeepAlive = item.KeepAlive;
//写入数据超时时间
_request.ReadWriteTimeout = item.ReadWriteTimeout;
if (item.IfModifiedSince != null)
{
//获取或设置 If-Modified-Since HTTP 标头的值
_request.IfModifiedSince = Convert.ToDateTime(item.IfModifiedSince);
}
//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;
if (item.MaximumAutomaticRedirections > 0)
{
//获取或设置请求将跟随的重定向的最大数目
_request.MaximumAutomaticRedirections = item.MaximumAutomaticRedirections;
}
//设置Post数据
SetPostData(item);
//设置最大连接
if (item.Connectionlimit > 0)
{
//获取或设置此 System.Net.ServicePoint 对象上允许的最大连接数
_request.ServicePoint.ConnectionLimit = item.Connectionlimit;
}
}
/// <summary>
/// 设置证书
/// </summary>
/// <param name="item"></param>
private void SetCer(HttpItem item)
{
if (!string.IsNullOrEmpty(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);
}
}
/// <summary>
/// 设置多个证书
/// </summary>
/// <param name="item"></param>
private void SetCerList(HttpItem item)
{
if (item.ClentCertificates != null && item.ClentCertificates.Count > 0)
{
foreach (X509Certificate c in item.ClentCertificates)
{
_request.ClientCertificates.Add(c);
}
}
}
/// <summary>
/// 设置Cookie
/// </summary>
/// <param name="item">Http参数</param>
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);
}
}
/// <summary>
/// 设置Post数据
/// </summary>
/// <param name="item">Http参数</param>
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("get"))
{
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.IsNullOrEmpty(item.Postdata))
{
StreamReader r = new StreamReader(item.Postdata, _postencoding);
buffer = _postencoding.GetBytes(r.ReadToEnd());
r.Close();
} //写入字符串
else if (!string.IsNullOrEmpty(item.Postdata))
{
buffer = _postencoding.GetBytes(item.Postdata);
}
if (buffer != null)
{
_request.ContentLength = buffer.Length;
_request.GetRequestStream().Write(buffer, 0, buffer.Length);
}
else
{
_request.ContentLength = 0;
}
}
}
/// <summary>
/// 设置代理
/// </summary>
/// <param name="item">参数对象</param>
private void SetProxy(HttpItem item)
{
bool isIeProxy = false;
if (!string.IsNullOrEmpty(item.ProxyIp))
{
isIeProxy = item.ProxyIp.ToLower().Contains("ieproxy");
}
if (!string.IsNullOrEmpty(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
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
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;
}
}
#endregion
#region private main
/// <summary>
/// 回调验证证书问题
/// </summary>
/// <param name="sender">流对象</param>
/// <param name="certificate">证书</param>
/// <param name="chain">X509Chain</param>
/// <param name="errors">SslPolicyErrors</param>
/// <returns>bool</returns>
private bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; }
/// <summary>
/// 通过设置这个属性，可以在发出连接的时候绑定客户端发出连接所使用的IP地址。
/// </summary>
/// <param name="servicePoint"></param>
/// <param name="remoteEndPoint"></param>
/// <param name="retryCount"></param>
/// <returns></returns>
private IPEndPoint BindIPEndPointCallback(ServicePoint servicePoint, IPEndPoint remoteEndPoint, int retryCount)
{
return _ipEndPoint;//端口号
}
#endregion
}
/// <summary>
/// Http请求参考类
/// </summary>
public class HttpItem
{
private string _url = string.Empty;
/// <summary>
/// 请求URL必须填写
/// </summary>
public string Url
{
get { return _url; }
set { _url = value; }
}
private string _method = "GET";
/// <summary>
/// 请求方式默认为GET方式,当为POST方式时必须设置Postdata的值
/// </summary>
public string Method
{
get { return _method; }
set { _method = value; }
}
private int _timeout = 90 * 1000;
/// <summary>
/// 默认请求超时时间，默认90秒
/// </summary>
public int Timeout
{
get { return _timeout; }
set { _timeout = value; }
}
private int _readWriteTimeout = 60 * 1000;
/// <summary>
/// 默认写入Post数据超时间，默认60秒
/// </summary>
public int ReadWriteTimeout
{
get { return _readWriteTimeout; }
set { _readWriteTimeout = value; }
}
private Boolean _keepAlive = true;
/// <summary>
/// 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。
/// </summary>
public Boolean KeepAlive
{
get { return _keepAlive; }
set { _keepAlive = value; }
}
private string _accept = "text/html, application/xhtml+xml, */*";
/// <summary>
/// 请求标头值，默认为text/html, application/xhtml+xml, */*
/// <para>1、application/json</para>
/// </summary>
public string Accept
{
get { return _accept; }
set { _accept = value; }
}
private string _contentType = "text/html";
/// <summary>
/// 请求返回类型，默认为text/html
/// <para>1、application/x-www-form-urlencoded；最常见的 POST 提交数据的方式</para>
/// <para>2、multipart/form-data；主要用于上传文件</para>
/// <para>3、application/json；服务端消息主体是序列化后的 JSON 字符串</para>
/// <para>4、text/xml</para>
/// </summary>
public string ContentType
{
get { return _contentType; }
set { _contentType = value; }
}
private string _userAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
/// <summary>
/// 客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
/// 解读：MSIE 8.0代表IE8, Windows NT 6.1 对应操作系统 windows 7
/// <para>1、IE各个版本典型的UserAgent如下：</para>
/// <para>Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)</para>
/// <para>Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2)</para>
/// <para>Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)</para>
/// <para>Mozilla/4.0 (compatible; MSIE 5.0; Windows NT)</para>
/// <para>2、Firefox的UserAgent如下： </para>
/// <para>Mozilla/5.0 (Windows; U; Windows NT 5.2) Gecko/2008070208 Firefox/3.0.1</para>
/// <para>Mozilla/5.0 (Windows; U; Windows NT 5.1) Gecko/20070309 Firefox/2.0.0.3</para>
/// <para>Mozilla/5.0 (Windows; U; Windows NT 5.1) Gecko/20070803 Firefox/1.5.0.12</para>
/// <para>解读：N: 表示无安全加密 I: 表示弱安全加密 U: 表示强安全加密</para>
/// <para>3、Opera典型的UserAgent如下：</para>
/// <para>Opera/9.27 (Windows NT 5.2; U; zh-cn)</para>
/// <para>Opera/8.0 (Macintosh; PPC Mac OS X; U; en)</para>
/// <para>Mozilla/5.0 (Macintosh; PPC Mac OS X; U; en) Opera 8.0 </para>
/// <para>4、Safari典型的UserAgent如下：</para>
/// <para>Mozilla/5.0 (Windows; U; Windows NT 5.2) AppleWebKit/525.13 (KHTML, like Gecko) Version/3.1 Safari/525.13</para>
/// <para>Mozilla/5.0 (iPhone; U; CPU like Mac OS X) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/4A93 Safari/419.3</para>
/// <para>5、Chrome的UserAgent如下：</para>
/// <para>Mozilla/5.0 (Windows; U; Windows NT 5.2) AppleWebKit/525.13 (KHTML, like Gecko) Chrome/0.2.149.27 Safari/525.13 </para>
/// <para>6、Navigator的UserAgent如下：</para>
/// <para>Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.12) Gecko/20080219 Firefox/2.0.0.12 Navigator/9.0.0.6</para>
/// <para>7、安卓 原生浏览器</para>
/// <para>Mozilla/5.0 (Linux; U; Android 4.0.3; zh-cn; M032 Build/IML74K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30</para>
/// <para>8、iPhone Safria</para>
/// <para>Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3</para>
/// <para>9、塞班 自带浏览器</para>
/// <para>Nokia5320/04.13 (SymbianOS/9.3; U; Series60/3.2 Mozilla/5.0; Profile/MIDP-2.1 Configuration/CLDC-1.1 ) AppleWebKit/413 (KHTML, like Gecko) Safari/413</para>
/// </summary>
public string UserAgent
{
get { return _userAgent; }
set { _userAgent = value; }
}
private Encoding _encoding = null;
/// <summary>
/// 返回数据编码默认为NUll,可以自动识别,一般为utf-8,gbk,gb2312
/// </summary>
public Encoding Encoding
{
get { return _encoding; }
set { _encoding = value; }
}
private PostDataType _postDataType = PostDataType.String;
/// <summary>
/// Post的数据类型
/// </summary>
public PostDataType PostDataType
{
get { return _postDataType; }
set { _postDataType = value; }
}
private string _postdata = string.Empty;
/// <summary>
/// Post请求时要发送的字符串Post数据
/// </summary>
public string Postdata
{
get { return _postdata; }
set { _postdata = value; }
}
private byte[] _postdataByte = null;
/// <summary>
/// Post请求时要发送的Byte类型的Post数据
/// </summary>
public byte[] PostdataByte
{
get { return _postdataByte; }
set { _postdataByte = value; }
}
private WebProxy _webProxy;
/// <summary>
/// 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
/// </summary>
public WebProxy WebProxy
{
get { return _webProxy; }
set { _webProxy = value; }
}
private CookieCollection _cookiecollection = null;
/// <summary>
/// Cookie对象集合
/// </summary>
public CookieCollection CookieCollection
{
get { return _cookiecollection; }
set { _cookiecollection = value; }
}
private string _cookie = string.Empty;
/// <summary>
/// 请求时的Cookie
/// </summary>
public string Cookie
{
get { return _cookie; }
set { _cookie = value; }
}
private string _referer = string.Empty;
/// <summary>
/// 来源地址，上次访问地址
/// </summary>
public string Referer
{
get { return _referer; }
set { _referer = value; }
}
private string _cerPath = string.Empty;
/// <summary>
/// 证书绝对路径
/// </summary>
public string CerPath
{
get { return _cerPath; }
set { _cerPath = value; }
}
private Boolean _isToLower = false;
/// <summary>
/// 是否设置为全文小写，默认为不转化
/// </summary>
public Boolean IsToLower
{
get { return _isToLower; }
set { _isToLower = value; }
}
private Boolean _allowautoredirect = false;
/// <summary>
/// 支持跳转页面，查询结果将是跳转后的页面，默认是不跳转
/// </summary>
public Boolean Allowautoredirect
{
get { return _allowautoredirect; }
set { _allowautoredirect = value; }
}
private int _connectionlimit = 1024;
/// <summary>
/// 最大连接数
/// </summary>
public int Connectionlimit
{
get { return _connectionlimit; }
set { _connectionlimit = value; }
}
private string _proxyusername = string.Empty;
/// <summary>
/// 代理Proxy 服务器用户名
/// </summary>
public string ProxyUserName
{
get { return _proxyusername; }
set { _proxyusername = value; }
}
private string _proxypwd = string.Empty;
/// <summary>
/// 代理 服务器密码
/// </summary>
public string ProxyPwd
{
get { return _proxypwd; }
set { _proxypwd = value; }
}
private string _proxyip = string.Empty;
/// <summary>
/// 代理 服务IP ,如果要使用IE代理就设置为ieproxy
/// </summary>
public string ProxyIp
{
get { return _proxyip; }
set { _proxyip = value; }
}
private ResultType _resulttype = ResultType.String;
/// <summary>
/// 设置返回类型String和Byte
/// </summary>
public ResultType ResultType
{
get { return _resulttype; }
set { _resulttype = value; }
}
private WebHeaderCollection _header = new WebHeaderCollection();
/// <summary>
/// header对象
/// </summary>
public WebHeaderCollection Header
{
get { return _header; }
set { _header = value; }
}
private Version _protocolVersion = System.Net.HttpVersion.Version11;
/// <summary>
// 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。
/// </summary>
public Version ProtocolVersion
{
get { return _protocolVersion; }
set { _protocolVersion = value; }
}
private Boolean _expect100Continue = false;
/// <summary>
/// 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。
/// </summary>
public Boolean Expect100Continue
{
get { return _expect100Continue; }
set { _expect100Continue = value; }
}
private X509CertificateCollection _clentCertificates;
/// <summary>
/// 设置509证书集合
/// </summary>
public X509CertificateCollection ClentCertificates
{
get { return _clentCertificates; }
set { _clentCertificates = value; }
}
private Encoding _postEncoding = Encoding.Default;
/// <summary>
/// 设置或获取Post参数编码,默认的为Default编码
/// </summary>
public Encoding PostEncoding
{
get { return _postEncoding; }
set { _postEncoding = value; }
}
private ResultCookieType _resultCookieType = ResultCookieType.String;
/// <summary>
/// Cookie返回类型,默认的是只返回字符串类型
/// </summary>
public ResultCookieType ResultCookieType
{
get { return _resultCookieType; }
set { _resultCookieType = value; }
}
private ICredentials _iCredentials = CredentialCache.DefaultCredentials;
/// <summary>
/// 获取或设置请求的身份验证信息。
/// </summary>
public ICredentials ICredentials
{
get { return _iCredentials; }
set { _iCredentials = value; }
}
/// <summary>
/// 设置请求将跟随的重定向的最大数目
/// </summary>
private int _maximumAutomaticRedirections;
public int MaximumAutomaticRedirections
{
get { return _maximumAutomaticRedirections; }
set { _maximumAutomaticRedirections = value; }
}
private DateTime? _ifModifiedSince = null;
/// <summary>
/// 获取和设置IfModifiedSince，默认为当前日期和时间
/// </summary>
public DateTime? IfModifiedSince
{
get { return _ifModifiedSince; }
set { _ifModifiedSince = value; }
}
#region ip-port
private IPEndPoint _ipEndPoint = null;
/// <summary>
/// 设置本地的出口ip和端口
/// </summary>]
/// <example>
///item.IPEndPoint = new IPEndPoint(IPAddress.Parse("192.168.1.1"),80);
/// </example>
public IPEndPoint IPEndPoint
{
get { return _ipEndPoint; }
set { _ipEndPoint = value; }
}
#endregion
}
/// <summary>
/// Http返回参数类
/// </summary>
public class HttpResult
{
private string _cookie;
/// <summary>
/// Http请求返回的Cookie
/// </summary>
public string Cookie
{
get { return _cookie; }
set { _cookie = value; }
}
private CookieCollection _cookieCollection;
/// <summary>
/// Cookie对象集合
/// </summary>
public CookieCollection CookieCollection
{
get { return _cookieCollection; }
set { _cookieCollection = value; }
}
private string _html = string.Empty;
/// <summary>
/// 返回的String类型数据 只有ResultType.String时才返回数据，其它情况为空
/// </summary>
public string Html
{
get { return _html; }
set { _html = value; }
}
private byte[] _resultByte;
/// <summary>
/// 返回的Byte数组 只有ResultType.Byte时才返回数据，其它情况为空
/// </summary>
public byte[] ResultByte
{
get { return _resultByte; }
set { _resultByte = value; }
}
private WebHeaderCollection _header;
/// <summary>
/// header对象
/// </summary>
public WebHeaderCollection Header
{
get { return _header; }
set { _header = value; }
}
private string _statusDescription;
/// <summary>
/// 返回状态说明
/// </summary>
public string StatusDescription
{
get { return _statusDescription; }
set { _statusDescription = value; }
}
private HttpStatusCode _statusCode;
/// <summary>
/// 返回状态码,默认为OK
/// </summary>
public HttpStatusCode StatusCode
{
get { return _statusCode; }
set { _statusCode = value; }
}
/// <summary>
/// 最后访问的URl
/// </summary>
public string ResponseUri { get; set; }
/// <summary>
/// 获取重定向的URl
/// </summary>
public string RedirectUrl
{
get
{
try
{
if (Header != null && Header.Count > 0)
{
string baseurl = Header["location"].ToString().Trim();
string locationurl = baseurl.ToLower();
if (!string.IsNullOrWhiteSpace(locationurl))
{
bool b = locationurl.StartsWith("http://") || locationurl.StartsWith("https://");
if (!b)
{
baseurl = new Uri(new Uri(ResponseUri), baseurl).AbsoluteUri;
}
}
return baseurl;
}
}
catch { }
return string.Empty;
}
}
}
/// <summary>
/// 返回类型
/// </summary>
public enum ResultType
{
/// <summary>
/// 表示只返回字符串 只有Html有数据
/// </summary>
String,
/// <summary>
/// 表示返回字符串和字节流 ResultByte和Html都有数据返回
/// </summary>
Byte
}
/// <summary>
/// Post的数据格式默认为string
/// </summary>
public enum PostDataType
{
/// <summary>
/// 字符串类型，这时编码Encoding可不设置
/// </summary>
String,
/// <summary>
/// Byte类型，需要设置PostdataByte参数的值编码Encoding可设置为空
/// </summary>
Byte,
/// <summary>
/// 传文件，Postdata必须设置为文件的绝对路径，必须设置Encoding的值
/// </summary>
FilePath
}
/// <summary>
/// Cookie返回类型
/// </summary>
public enum ResultCookieType
{
/// <summary>
/// 只返回字符串类型的Cookie
/// </summary>
String,
/// <summary>
/// CookieCollection格式的Cookie集合同时也返回String类型的cookie
/// </summary>
CookieCollection
}HttpHelper 帮助类
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