/// <summary>
/// 执行带文件上传的HTTP POST请求。
/// </summary>
/// <param name="url">请求地址</param>
/// <param name="textParams">请求文本参数</param>
/// <param name="fileParams">请求文件参数</param>
/// <returns>HTTP响应</returns>
public string DoPost(string url, IDictionary <string, string> textParams, IDictionary <string, FileItem> fileParams)
{
// 如果没有文件参数，则走普通POST请求
if (fileParams == null || fileParams.Count == 0)
{
return(DoPost(url, textParams));
}
string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
HttpWebRequest req = GetWebRequest(url, "POST");
req.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
System.IO.Stream reqStream = req.GetRequestStream();
byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
// 组装文本请求参数
string textTemplate = "Content-Disposition:form-data;name=\"{0}\"\r\nContent-Type:text/plain\r\n\r\n{1}";
IEnumerator <KeyValuePair <string, string> > textEnum = textParams.GetEnumerator();
while (textEnum.MoveNext())
{
string textEntry = string.Format(textTemplate, textEnum.Current.Key, textEnum.Current.Value);
byte[] itemBytes = Encoding.UTF8.GetBytes(textEntry);
reqStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
reqStream.Write(itemBytes, 0, itemBytes.Length);
}
// 组装文件请求参数
string fileTemplate = "Content-Disposition:form-data;name=\"{0}\";filename=\"{1}\"\r\nContent-Type:{2}\r\n\r\n";
IEnumerator <KeyValuePair <string, FileItem> > fileEnum = fileParams.GetEnumerator();
while (fileEnum.MoveNext())
{
string key = fileEnum.Current.Key;
FileItem fileItem = fileEnum.Current.Value;
if (!fileItem.IsValid())
{
throw new ArgumentException("FileItem is invalid");
}
string fileEntry = string.Format(fileTemplate, key, fileItem.GetFileName(), fileItem.GetMimeType());
byte[] itemBytes = Encoding.UTF8.GetBytes(fileEntry);
reqStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
reqStream.Write(itemBytes, 0, itemBytes.Length);
fileItem.Write(reqStream);
}
reqStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
reqStream.Close();
HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
return(GetResponseAsString(rsp, encoding));
}
/// <summary>
/// 同步POST文件
/// </summary>
/// <param name="url"></param>
/// <param name="content"></param>
/// <param name="fileParams">文件列表</param>
/// <returns></returns>
public virtual string Post(string url, object content, IDictionary <string, FileItem> fileParams)
{
if (fileParams == null || fileParams.Count == 0)
{
return(Post(url, content));
}
try
{
string result = null;
string str_content = this.GetContent(content);
this.Verify(url, str_content);
this.SetServicePoint(url);
using (MultipartFormDataContent httpContent = new MultipartFormDataContent())
{
#region 添加文件
IEnumerator <KeyValuePair <string, FileItem> > fileEnum = fileParams.GetEnumerator();
while (fileEnum.MoveNext())
{
string key = fileEnum.Current.Key;
FileItem fileItem = fileEnum.Current.Value;
//StreamContent streamConent = new StreamContent(fileItem.GetStream());
//ByteArrayContent imageContent = new ByteArrayContent(streamConent.ReadAsByteArrayAsync().Result);
//imageContent.Headers.ContentType = MediaTypeHeaderValue.Parse("multipart/form-data");
//httpContent.Add(imageContent, key, fileItem.GetFileName());
httpContent.Add(new StreamContent(fileItem.GetStream()), key, fileItem.GetFileName());
}
#endregion 添加文件
#region 添加参数
if (content is Hashtable)
{
Hashtable param = content as Hashtable;
foreach (string key in param.Keys)
{
httpContent.Add(new StringContent(param[key].ToString()), key);
}
}
#endregion 添加参数
HttpResponseMessage response = this.Client.PostAsync(url, httpContent).Result;
if (response.IsSuccessStatusCode)
{
result = response.Content.ReadAsStringAsync().Result;
}
else
{
//LogHelper.Error(string.Format("HttpClientUtils BaseClient PostFile StatusCode：【{0}】，ReasonPhrase：【{1}】", response.StatusCode, response.ReasonPhrase));
}
httpContent.Dispose();
}
return(result);
}
catch (System.Threading.ThreadAbortException ex)
{
//LogHelper.Error(ex);
System.Threading.Thread.ResetAbort();
throw ex;
}
catch (HttpRequestException ex)
{
//LogHelper.Error(ex);
throw ex;
}
catch (Exception ex)
{
//LogHelper.Error(ex.GetType().FullName);
//LogHelper.Error(ex);
throw ex;
}
}
