1 public static QiyeMaterialMsg UploadQyImg(string path)
2 {
3 try
4 {
5 HttpWebRequest request = WebRequest.Create($"https://qyapi.weixin.qq.com/cgi-bin/media/upload?access_token={Config.access_token}&type=image") as HttpWebRequest;
6
7 if (request != null)
8 {
9 CookieContainer cookieContainer = new CookieContainer();
10 request.CookieContainer = cookieContainer;
11 request.AllowAutoRedirect = true;
12 request.Method = "POST";
13 string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
14 request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
15 byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
16 byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
17
18 int pos = path.LastIndexOf("\\");
19 string fileName = path.Substring(pos + 1);
20
21 //请求头部信息
22 StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName));
23 byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());
24
25 FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
26 byte[] bArr = new byte[fs.Length];
27 fs.Read(bArr, 0, bArr.Length);
28 fs.Close();
29
30 Stream postStream = request.GetRequestStream();
31 postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
32 postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
33 postStream.Write(bArr, 0, bArr.Length);
34 postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
35 postStream.Close();
36
37 //发送请求并获取相应回应数据
38 HttpWebResponse response = request.GetResponse() as HttpWebResponse;
39 //直到request.GetResponse()程序才开始向目标网页发送Post请求
40 Stream instream = response.GetResponseStream();
41 StreamReader sr = new StreamReader(instream, Encoding.UTF8);
42 string content = sr.ReadToEnd();
43 return JsonHelper.JsonDeserialize<QiyeMaterialMsg>(content);
44 }
45
46 return new QiyeMaterialMsg();
47 }
48 catch (Exception e)
49 {
50 LogHelper.ErrorLog(e.Message);
51 return new QiyeMaterialMsg { errmsg = e.Message };
52 }
53 }
