/// <summary>
/// 根据相传入的数据，得到相应页面数据
/// </summary>
/// <param name="strPostdata">传入的数据Post方式,get方式传NUll或者空字符串都可以</param>
/// <param name="ContentType">返回的响应数据的类型</param>
/// <returns>string类型的响应数据</returns>
private async Task <HttpResponse> GetHttpRequestData(HttpWebRequest request, HttpItem objhttpitem)
{
var result = "";
#region 得到请求的response
HttpResponse httpResponse = new HttpResponse();
var baseresponse = await request.GetResponseAsync();
using (var response = (HttpWebResponse)baseresponse)
{
MemoryStream stream;
var docu = objhttpitem.GetHeaderParameter();
{
if (response.Headers["set-cookie"] != null)
{
var cookieStr = response.Headers["set-cookie"];
//cookieStr = Regex.Replace(cookieStr, ",(?[^=;]=[^;];)", ";$1");
docu["Cookie"] = MergeCookie(docu["Cookie"].ToString(), cookieStr);
}
}
httpResponse.ResponseHeaders = response.Headers;
httpResponse.Code = response.StatusCode;
objhttpitem.Parameters = HttpItem.HeaderToString(docu);
//GZIIP处理
if (response.ContentEncoding != null &&
response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))
{
stream =
GetMemoryStream(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress));
}
else
{
stream = GetMemoryStream(response.GetResponseStream());
}
//获取Byte
var rawResponse = stream.ToArray();
//是否返回Byte类型数据
if (objhttpitem.Encoding == EncodingType.Unknown || encoding == null)
{
var temp = Encoding.Default.GetString(rawResponse, 0, rawResponse.Length);
//<meta(.*?)charset([\s]?)=[^>](.*?)>
var meta = Regex.Match(temp, "<meta([^<]*)charset=([^<]*)[\"']",
RegexOptions.IgnoreCase | RegexOptions.Multiline);
var charter = (meta.Groups.Count > 2) ? meta.Groups[2].Value : string.Empty;
charter = charter.Replace("\"", string.Empty)
.Replace("'", string.Empty)
.Replace(";", string.Empty);
if (charter.Length > 0)
{
charter = charter.ToLower().Replace("iso-8859-1", "gbk");
if (charter.Contains("utf-8") || charter.Contains("UTF-8"))
{
encoding = Encoding.UTF8;
}
else if (charter.Contains("gb"))
{
encoding = Encoding.GetEncoding("GB2312");
}
else
{
encoding = Encoding.GetEncoding(charter);
}
}
else
{
if (response.CharacterSet != null && response.CharacterSet.ToLower().Trim() == "iso-8859-1")
{
encoding = Encoding.GetEncoding("gbk");
}
}
}
//得到返回的HTML
httpResponse.Html = encoding.GetString(rawResponse);
//最后释放流
stream.Close();
}
return(httpResponse);
}
public static void SetRequest(HttpItem item, HttpWebRequest request, string desturl = null, string post = null)
{
var docu = item.GetHeaderParameter();
// 设置代理
if (string.IsNullOrEmpty(item.ProxyIP))
{
//不需要设置
}
else
{
//设置代理服务器
string username, password, url;
if (!string.IsNullOrWhiteSpace(item.ProxyIP))
{
var myProxy = new WebProxy(item.ProxyIP, item.ProxyPort);
//建议连接
if (!string.IsNullOrWhiteSpace(item.UserName))
{
myProxy.Credentials = new NetworkCredential(item.UserName, item.Password);
}
//给当前请求对象
request.Proxy = myProxy;
//设置安全凭证
request.Credentials = CredentialCache.DefaultNetworkCredentials;
}
}
//请求方式Get或者Post
request.Method = item.Method.ToString();
request.Timeout = item.Timeout;
request.ReadWriteTimeout = item.ReadWriteTimeout;
//Accept
request.Headers = new WebHeaderCollection();
if (docu["Headers"].ToString() != "")
{
var str = docu["Headers"].ToString().Split('\n');
foreach (var s in str)
{
var ms = s.Split(':');
if (ms.Length != 2)
{
continue;
}
var key = ms[0].Trim();
var value = ms[1].Trim();
if (SetHeaderValue(request.Headers, key, value) == false)
{
request.Headers.Add(key, value);
}
}
}
request.Accept = docu["Accept"].ToString();
//ContentType返回类型
request.ContentType = docu["Content_Type"].ToString();
//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 = docu["User-Agent"].ToString();
var host = docu["Host"].ToString();
//if (string.IsNullOrEmpty(host) == false)
// request.Host = host;
//设置Cookie
var cookie = docu["Cookie"].ToString();
if (!string.IsNullOrEmpty(cookie))
{
request.Headers[HttpRequestHeader.Cookie] = cookie;
}
//来源地址
request.Referer = docu["Referer"].ToString();
//是否执行跳转功能
request.AllowAutoRedirect = item.Allowautoredirect;
//设置Post数据
string postdata = null;
if (post == null)
{
postdata = item.Postdata;
}
else
{
postdata = post;
}
//验证在得到结果时是否有传入数据
if (!string.IsNullOrEmpty(postdata) && request.Method.Trim().ToLower().Contains("post"))
{
var buffer = Encoding.Default.GetBytes(postdata);
request.ContentLength = buffer.Length;
request.GetRequestStream().Write(buffer, 0, buffer.Length);
}
////设置最大连接
//if (item.Connectionlimit > 0)
//{
// request.ServicePoint.ConnectionLimit = item.Connectionlimit;
//}
}
public CookieAwareWebClient(HttpItem item)
{
Encoding = Encoding.UTF8;
HttpItem = item;
}