/// <summary>
/// 设置WebRequest请求证书信息
/// </summary>
/// <param name="requestItem"></param>
protected void SetCertificateParams(RequestItem requestItem)
{
if (requestItem.IsNeedCertificate)
{
ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) => true;
}
WebRequest = System.Net.WebRequest.Create(requestItem.RequestUrl) as HttpWebRequest;
}
/// <summary>
/// 设置HTTP请求代理
/// </summary>
/// <param name="requestItem"></param>
protected void SetWebProxyParams(RequestItem requestItem)
{
if (null != requestItem.ProxyInfo)
{
ProxySetInfo proxyInfo = requestItem.ProxyInfo;
if (!string.IsNullOrEmpty(proxyInfo.ProxyIp))
{
WebProxy webProxy = new WebProxy(proxyInfo.ProxyIp);
webProxy.Credentials = new NetworkCredential(proxyInfo.ProxyUserName, proxyInfo.ProxyPassword);
WebRequest.Proxy = webProxy;
WebRequest.Credentials = CredentialCache.DefaultCredentials; //设置安全凭证
}
}
}
/// <summary>
/// 使用POST方式请求数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="requestItem"></param>
/// <param name="responseCallBack"></param>
/// <returns></returns>
public T RequestDataByPost <T>(RequestItem requestItem, Func <HttpWebResponse, T> responseCallBack)
{
T result = default(T);
if (null != requestItem)
{
requestItem.Method = HttpMethodEnum.Post;
result = CreateWebRequest(requestItem, responseCallBack);
}
else
{
throw new ArgumentNullException("POST请求-请求参数RequestItem为Null");
}
return(result);
}
/// <summary>
/// 设置POST请求参数
/// </summary>
/// <param name="requestItem"></param>
protected void SetPostRequestParams(RequestItem requestItem)
{
if (WebRequest.Method.ToLower() == "post")
{
if (string.IsNullOrEmpty(WebRequest.ContentType))
{
WebRequest.ContentType = "application/x-www-form-urlencoded";
}
WebRequest.ReadWriteTimeout = requestItem.ReadWriteTimeout;
byte[] buffer = Encoding.UTF8.GetBytes(requestItem.GetParamsData());
WebRequest.ContentLength = buffer.Length;
Stream writer = WebRequest.GetRequestStream();
writer.Write(buffer, 0, buffer.Length);
writer.Close();
}
}
/// <summary>
/// 创建HttpWebRequest请求
/// </summary>
/// <typeparam name="T">返回数据类型</typeparam>
/// <param name="requestItem">请求参数</param>
/// <param name="responseCallBack"></param>
/// <returns></returns>
public T CreateWebRequest <T>(RequestItem requestItem, Func <HttpWebResponse, T> responseCallBack)
{
T result = default(T);
if (null == requestItem)
{
throw new ArgumentNullException("请求参数RequestItem为Null");
}
if (responseCallBack == null)
{
throw new ArgumentNullException("委托responseCallBack为Null");
}
try
{
SetCertificateParams(requestItem);
if (null != WebRequest)
{
SetWebProxyParams(requestItem); //设置代理
SetServicePointParams(); //设置请求的服务端信息
SetRequestParams(requestItem); // 设置HTTP请求头,HTTP版本信息等信息
SetPostRequestParams(requestItem); //设置POST请求参数
result = GetWebResponse(responseCallBack); //获取WebResponse响应
}
else
{
throw new ArgumentNullException("创建HttpWebRequest请求失败 HttpWebRequest为Null");
}
}
catch (Exception ex)
{
//OutLog("代理服务器拒绝握手，超小气。。。");
//OutLog("HttpRequest高速缓存池出现致命错误:");
//OutLog(ex.Message);
return(default(T));
}
finally
{
CloseWebResponse(); //关闭响应
AbortWebRequest(); //取消请求
}
return(result);
}
/// <summary>
/// 设置HTTP请求头,HTTP版本信息等信息
/// </summary>
/// <param name="requestItem"></param>
protected void SetRequestParams(RequestItem requestItem)
{
WebRequest.Method = requestItem.Method.ToString(); //请求类型
WebRequest.ProtocolVersion = HttpVersion.Version11; //请求HTTP版本
WebRequest.Timeout = requestItem.Timeout; //超时时间
if (requestItem.RequestCookies == null)
{
requestItem.RequestCookies = new CookieContainer();
}
WebRequest.CookieContainer = requestItem.RequestCookies; //设置与请求关联的Cookies
WebRequest.KeepAlive = requestItem.KeepAlive; //是否保持持久链接
WebRequest.AllowAutoRedirect = requestItem.AutoRedirect; //是否允许自动跳转
if (!string.IsNullOrEmpty(requestItem.Referer))
{
WebRequest.Referer = requestItem.Referer; //请求来源Url
}
if (!string.IsNullOrEmpty(requestItem.ContentType))
{
WebRequest.ContentType = requestItem.ContentType;
}
if (!string.IsNullOrEmpty(requestItem.RequestAccept))
{
WebRequest.Accept = requestItem.RequestAccept; //设置Accept标头
}
if (string.IsNullOrEmpty(requestItem.UserAgent))
{
requestItem.UserAgent = UserAgentIe;
}
WebRequest.UserAgent = requestItem.UserAgent; //设置User-Agent标头
WebHeaderCollection headerColl = requestItem.GetHeaderData();
if (null != headerColl && headerColl.Count > 0)
{
WebRequest.Headers.Add(headerColl);
}
}
/// <summary>
/// 使用POST方式请求数据
/// </summary>
/// <param name="requestItem"></param>
/// <returns></returns>
public ResponseItem RequestDataByPost(RequestItem requestItem)
{
return(RequestDataByPost <ResponseItem>(requestItem, ResponseCallBack));
}