虽然看不懂什么意思,但是能用就行了 O98K
原地址 https://bbs.csdn.net/topics/390548882?page=1
public static string BuildRequest(string fileName)
{
string contentType = "image/jpeg";
//待请求参数数组
FileStream Pic = new FileStream(fileName, FileMode.Open);
byte[] PicByte = new byte[Pic.Length];
Pic.Read(PicByte, 0, PicByte.Length);
int lengthFile = PicByte.Length;
Dictionary<string, string> dicPara = new Dictionary<string, string>();
dicPara.Add("access_token", "xxxxx");
dicPara.Add("oauth_consumer_key", "xxxxx");
dicPara.Add("openid", "xxxx");
dicPara.Add("content", "xxxx");
//构造请求地址
string strUrl = "https://xxx/t/add_pic_t";
//设置HttpWebRequest基本信息
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(strUrl);
//设置请求方式:get、post
request.Method = "POST";
//设置boundaryValue
string boundaryValue = DateTime.Now.Ticks.ToString("x");
string boundary = "--" + boundaryValue;
request.ContentType = "\r\nmultipart/form-data; boundary=" + boundaryValue;
//设置KeepAlive
request.KeepAlive = true;
//设置请求数据,拼接成字符串
StringBuilder sbHtml = new StringBuilder();
foreach (KeyValuePair<string, string> key in dicPara)
{
sbHtml.Append(boundary + "\r\nContent-Disposition: form-data; name=\"" + key.Key + "\"\r\n\r\n" + key.Value + "\r\n");
}
sbHtml.Append(boundary + "\r\nContent-Disposition: form-data; name=\"pic\"; filename=\"");
sbHtml.Append(fileName);
sbHtml.Append("\"\r\nContent-Type: " + contentType + "\r\n\r\n");
string postHeader = sbHtml.ToString();
//将请求数据字符串类型根据编码格式转换成字节流
Encoding code = Encoding.GetEncoding("GBK");
byte[] postHeaderBytes = code.GetBytes(postHeader);
byte[] boundayBytes = Encoding.ASCII.GetBytes("\r\n" + boundary + "--\r\n");
//设置长度
long length = postHeaderBytes.Length + lengthFile + boundayBytes.Length;
request.ContentLength = length;
//请求远程HTTP
Stream requestStream = request.GetRequestStream();
Stream myStream = null;
try
{
//发送数据请求服务器
requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
requestStream.Write(PicByte, 0, lengthFile);
requestStream.Write(boundayBytes, 0, boundayBytes.Length);
HttpWebResponse HttpWResp = (HttpWebResponse)request.GetResponse();
myStream = HttpWResp.GetResponseStream();
}
catch (WebException e)
{
//LogResult(e.Message);
return "";
}
finally
{
if (requestStream != null)
{
requestStream.Close();
}
}
//读取处理结果
StreamReader reader = new StreamReader(myStream, code);
StringBuilder responseData = new StringBuilder();
String line;
while ((line = reader.ReadLine()) != null)
{
responseData.Append(line);
}
myStream.Close();
return responseData.ToString();
}
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