public static string ToText(object obj)
{
string data = "";
if (obj is string)
{
data = (string)obj;
}
else if (obj is byte[])
{
data = Encoding.UTF8.GetString((byte[])obj);
}
else
{
data = Jsons.ToJson(obj);
}
return(data);
}
/// <summary>
/// 上传文件
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="url"></param>
/// <param name="filePaths"></param>
/// <param name="statusCode"></param>
/// <returns></returns>
public static T PostWithFiles <T>(string url, object postData, List <string> filePaths, out int statusCode) where T : class, new()
{
// WebKitFormBoundaryafkSRjSyccnJC6ED
string boundary = "------WebKitFormBoundary" + KK.CurrentMills();
using (var httpContent = new MultipartFormDataContent(boundary))
{
// 1. form-data
// Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryqgCWFrzZQTH8Ubnp
if (postData != null)
{
Dictionary <string, object> dict = Jsons.FromJson <Dictionary <string, object> >(Jsons.ToJson(postData));
foreach (var item in dict)
{
//Content-Disposition: form-data; name="json"
var stringContent = new StringContent(KK.ToText(item.Value));
stringContent.Headers.Add("Content-Disposition", "form-data; name=\"" + item.Key + "\"");
httpContent.Add(stringContent, item.Key);
}
}
// 2. file-data
foreach (string path in filePaths)
{
FileInfo fi = new FileInfo(path);
string fname = fi.Name;
int idx = fname.LastIndexOf(".");
ByteArrayContent bac = new ByteArrayContent(File.ReadAllBytes(path));
httpContent.Add(bac, idx > 0 ? fname.Substring(0, idx) : fname, fname);
}
// httpContent.Headers.ContentType = new MediaTypeHeaderValue("multipart/form-data");// boundary=" + boundary
// httpContent.Headers.ContentType.CharSet = "utf-8";
string result = string.Empty;
//异步Post
try
{
HttpResponseMessage response = uploadClient.PostAsync(url, httpContent).Result;
//输出Http响应状态码
statusCode = (int)response.StatusCode;
//确保Http响应成功
if (response.IsSuccessStatusCode)
{
//异步读取json
result = response.Content.ReadAsStringAsync().Result;
}
return(result?.Length > 0 ? Jsons.FromJson <T>(result) : null);
}
catch (Exception e)
{
logger.Error("post url#" + url + " error.", e);
statusCode = -1;
return(default(T));
}
}
}