public virtual async Task <TResponse> GetAsync <TResponse>(string url, HttpRequest request = null, Dictionary <string, string> headersDict = null)
{
WebRequest webRequest = WebRequest.Create(url);
webRequest.Method = "get";
webRequest.ContentType = "application/json";
if (headersDict != null)
{
foreach (var headerTuple in headersDict)
{
webRequest.Headers.Add(headerTuple.Key, headerTuple.Value);
}
}
if (request != null)
{
var jsonData = JsonConvert.SerializeObject(request);
byte[] databyte = Encoding.UTF8.GetBytes(jsonData);
webRequest.ContentLength = databyte.Length;
using (Stream requestStream = webRequest.GetRequestStream())
{
requestStream.Write(databyte, 0, databyte.Length);
}
}
var response = await webRequest.GetResponseAsync();
using (Stream responseStream = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(responseStream ?? throw new InvalidOperationException(),
Encoding.GetEncoding("utf-8")))
{
string result = reader.ReadToEnd();
var decodeResult = UnicodeHelper.Unicode2String(result);
var dataResponse = JsonConvert.DeserializeObject <TResponse>(decodeResult);
return(dataResponse);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="url">访问地址</param>
/// <param name="fieldValues">数据字典</param>
/// <param name="files">文件列表</param>
/// <param name="fileKeys">"uploadimg"、"file0"</param>
/// <param name="fileContentType">"image/jpeg"</param>
/// <param name="encoding">编码，如UTF8</param>
/// <returns></returns>
public static string UploadFiles(string url, NameValueCollection fieldValues, string[] files, List <string> fileKeys, string fileContentType, Encoding encoding)
{
string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
byte[] endbytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
//1.HttpWebRequest
System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
request.ContentType = $"multipart/form-data; boundary=" + boundary;
request.Method = "POST";
request.KeepAlive = true;
request.Credentials = CredentialCache.DefaultCredentials;
using (Stream stream = request.GetRequestStream())
{
//1.1 key/value
string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
if (fieldValues != null)
{
foreach (string key in fieldValues.Keys)
{
stream.Write(boundarybytes, 0, boundarybytes.Length);
string formitem = string.Format(formdataTemplate, key, fieldValues[key]);
byte[] formitembytes = encoding.GetBytes(formitem);
stream.Write(formitembytes, 0, formitembytes.Length);
}
}
//1.2 file
string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";
byte[] buffer = new byte[4096];
int bytesRead = 0;
for (int i = 0; i < files.Length; i++)
{
//
stream.Write(boundarybytes, 0, boundarybytes.Length);
string header = string.Format(headerTemplate, fileKeys[i], Path.GetFileName(files[i]), fileContentType);
byte[] headerbytes = encoding.GetBytes(header);
stream.Write(headerbytes, 0, headerbytes.Length);
using (FileStream fileStream = new FileStream(files[i], FileMode.Open, FileAccess.Read))
{
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
stream.Write(buffer, 0, bytesRead);
}
}
}
//1.3 form end
stream.Write(endbytes, 0, endbytes.Length);
}
//2.WebResponse
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (StreamReader stream = new StreamReader(response.GetResponseStream() ?? throw new InvalidOperationException()))
{
var result = stream.ReadToEnd();
var decodeResult = UnicodeHelper.Unicode2String(result);
return(decodeResult);
}
}
