/// <summary>
/// 创建GET方式的HTTP请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
/// <returns></returns>
public static HttpWebResponse CreateGetHttpResponse(string url, PostHead header)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "GET";
header.FillInfo(request);
return(request.GetResponse() as HttpWebResponse);
}
/// <summary>
/// 发送数据
/// </summary>
/// <param name="request">发送请求</param>
/// <param name="prms">发送数据的字段和值</param>
/// <param name="files">要发送的文件</param>
/// <returns></returns>
public static void PostData(HttpWebRequest request, PostHead head, IDictionary <string, string> prms, IEnumerable <FormFile> files)
{
String BOUNDARY = "---------" + CommonMethods.GuidToString(Guid.NewGuid()); //数据分隔线
request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
request.Method = "POST";
head.FillInfo(request);
request.ContentType = MULTIPART_FORM_DATA + "; boundary=" + BOUNDARY;
StringBuilder sb = new StringBuilder();
//上传的表单参数部分，格式请参考文章
if (prms != null)
{
foreach (KeyValuePair <string, string> entry in prms)
{//构建表单字段内容
sb.Append("--");
sb.Append(BOUNDARY);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"" + entry.Key + "\"\r\n\r\n");
sb.Append(entry.Value);
sb.Append("\r\n");
}
}
Encoding useEncoding = head.PageEncoding;
using (Stream outStream = request.GetRequestStream())
{
byte[] send = useEncoding.GetBytes(sb.ToString());
WriteData(outStream, send);
if (files != null)
{
//上传的文件部分，格式请参考文章
foreach (FormFile file in files)
{
StringBuilder split = new StringBuilder();
split.Append("--");
split.Append(BOUNDARY);
split.Append("\r\n");
split.Append("Content-Disposition: form-data;name=\"" + file.FormName + "\";filename=\"" + file.FileName + "\"\r\n");
split.Append("Content-Type: " + file.ContentType + "\r\n\r\n");
WriteString(outStream, split.ToString(), useEncoding);
WriteData(outStream, file.Data);
WriteString(outStream, "\r\n", useEncoding);
}
}
byte[] end_data = System.Text.Encoding.UTF8.GetBytes("--" + BOUNDARY + "--\r\n");//数据结束标志
outStream.Write(end_data, 0, end_data.Length);
outStream.Flush();
}
}
/// <summary>
/// 发送数据
/// </summary>
/// <param name="request">发送请求</param>
/// <param name="prms">发送数据的字段和值</param>
/// <param name="files">要发送的文件</param>
/// <returns></returns>
public static void Post(HttpWebRequest request, PostHead head, string prms)
{
request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
request.Method = "POST";
head.FillInfo(request);
if (!string.IsNullOrEmpty(prms))
{
Encoding useEncoding = head.PageEncoding;
using (Stream outStream = request.GetRequestStream())
{
byte[] send = useEncoding.GetBytes(prms);
WriteData(outStream, send);
outStream.Flush();
}
}
}
/// <summary>
/// 创建头
/// </summary>
/// <returns></returns>
public static PostHead CreateHeader()
{
PostHead head = new PostHead(StringComparer.CurrentCultureIgnoreCase);
return(head);
}
/// <summary>
/// 创建POST方式的HTTP请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="parameters">随同请求POST的参数名称及参数值字典</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
/// <param name="requestEncoding">发送HTTP请求时所用的编码</param>
/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
/// <returns></returns>
public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary <string, string> parameters, PostHead header)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
HttpWebRequest request = null;
//如果是发送HTTPS请求
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request = WebRequest.Create(url) as HttpWebRequest;
request.ProtocolVersion = HttpVersion.Version10;
}
else
{
request = WebRequest.Create(url) as HttpWebRequest;
}
request.Method = "POST";
header.FillInfo(request);
request.ContentType = "application/x-www-form-urlencoded";
//如果需要POST数据
if (!(parameters == null || parameters.Count == 0))
{
StringBuilder buffer = new StringBuilder();
int i = 0;
foreach (string key in parameters.Keys)
{
if (i > 0)
{
buffer.AppendFormat("&{0}={1}", key, parameters[key]);
}
else
{
buffer.AppendFormat("{0}={1}", key, parameters[key]);
}
i++;
}
byte[] data = header.PageEncoding.GetBytes(buffer.ToString());
using (Stream stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
}
return(request.GetResponse() as HttpWebResponse);
}
public FormPost()
{
//_userAgent = DefaultUserAgent;
_requestHead = PostHead.CreateHeader();
}