/// <summary>
/// 一个url发起异步的http请求
/// </summary>
/// <param name="url"></param>
/// <param name="_query"></param>
/// <param name="files"></param>
/// <param name="callback"></param>
public static void BeginPostFromDataString(string url, IWebParamData _query, PostFromDataParam <PostFileData> files, Action <string, System.Exception> callback)
{
BeginPostFromData(url, _query, files, (res, e) =>
{
Process_GetHttpResponseString(res, e, callback);
});
}
/// <summary>
///
/// </summary>
/// <param name="url"></param>
/// <param name="_query"></param>
/// <param name="files"></param>
/// <returns></returns>
public static string PostFromDataString(string url, IWebParamData _query, PostFromDataParam <PostFileData> files, IWebParamData header = null)
{
try
{
var response = PostFromData(url, _query, files, header);
return(GetStringFromResponse(response));
}
catch //(Exception ex)
{
return("");
}
}
/// <summary>
///
/// </summary>
/// <param name="url"></param>
/// <param name="_query"></param>
/// <param name="files"></param>
/// <returns></returns>
public static HttpWebResponse PostFromData(string url, IWebParamData _query, PostFromDataParam <PostFileData> files, IWebParamData header = null)
{
//写入请求流
var req = BuilderRequest(url, _query, files, r =>
{
if (header != null)
{
foreach (var kv in header)
{
r.Headers[kv.Key] = kv.Value;
}
}
});
HttpWebResponse res = (HttpWebResponse)req.GetResponse();
return(res);
}
/*********************** Begin Method *************************/
/// <summary>
/// 一个url发起异步的http请求
/// </summary>
/// <param name="url"></param>
/// <param name="_query"></param>
/// <param name="files"></param>
/// <param name="callback"></param>
static void BeginPostFromData(string url, IWebParamData _query, PostFromDataParam <PostFileData> files, Action <HttpWebResponse, System.Exception> callback)
{
ThreadPoolProviderManager.QueueUserWorkItem(() =>
{
try
{
var req = BuilderRequest(url, _query, files, null);
using (var res = (HttpWebResponse)req.GetResponse())
{
callback?.Invoke(res, null);
}
}
catch (System.Exception ex)
{
callback?.Invoke(null, ex);
}
});
}
private static HttpWebRequest BuilderRequest(string url, IWebParamData _query, PostFromDataParam <PostFileData> files, Action <HttpWebRequest> BeforSendHeader)
{
byte[] _newlinebytes = baseEncoding.GetBytes("\r\n");
var _newlinebytescount = _newlinebytes.Length;
using (var ms = new MemoryStream())
{
#region 文件流
//写入请求头参数信息，query
StringBuilder _queryStringbuffer = new StringBuilder();
foreach (var p in _query)
{
_queryStringbuffer.Length = 0;
_queryStringbuffer.Append("--");
_queryStringbuffer.Append(ConstString.BOUNDARY);
_queryStringbuffer.Append("\r\n");
_queryStringbuffer.Append("Content-Disposition: form-data; name=\"" + p.Key + "\"\r\n\r\n");
_queryStringbuffer.Append(p.Value);
_queryStringbuffer.Append("\r\n");
//写入请求流
var data = baseEncoding.GetBytes(_queryStringbuffer.ToString());
ms.Write(data, 0, data.Length);
}
if (files != null)
{
#region 写文件
//写文件
foreach (var f in files)
{
var file = f.Value;
if (!file.IsHasFile)
{
continue;
}
_queryStringbuffer.Length = 0;
_queryStringbuffer.Append("--");
_queryStringbuffer.Append(ConstString.BOUNDARY);
_queryStringbuffer.Append("\r\n");
_queryStringbuffer.Append("Content-Disposition:form-data;name=\"" + f.Key + "\";filename=\"" + file.FileName + "\"\r\n");
_queryStringbuffer.Append("Content-Type:application/octet-stream\r\n\r\n");
//写入请求流
var data = baseEncoding.GetBytes(_queryStringbuffer.ToString());
ms.Write(data, 0, data.Length);
file.WriteTo(ms);
//写入更新的换行符
ms.Write(_newlinebytes, 0, _newlinebytescount);
}
;
#endregion
}
#endregion
//写入结束标记
//byte[] end_data = ("--" + BOUNDARY + "--\r\n").getBytes();//数据结束标志
byte[] end_data = baseEncoding.GetBytes($"--" + ConstString.BOUNDARY + "--\r\n");//数据结束标志
ms.Write(end_data, 0, end_data.Length);
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "post";
req.ContentLength = ms.Length;
req.ContentType = ConstString.MULTIPART_FORM_DATAContextType;
BeforSendHeader?.Invoke(req);
using (var req_stream = req.GetRequestStream())
{
if (ms.CanSeek)
{
ms.Position = 0;
}
ms.CopyTo(req_stream);
req_stream.Flush();
return(req);
}
}
}
