/// <summary>
/// 同步上传文件
/// </summary>
/// <param name="fileInfo">文件信息</param>
/// <param name="toUserName">发送人UserName，其实没什么用，但是官方有这个参数</param>
/// <returns></returns>
public UploadMediaResponse UploadFile(FileInfo fileInfo, string toUserName)
{
string postUrl = uploadHost + "/cgi-bin/mmwebwx-bin/webwxuploadmedia?f=json";
int bufferLength = 512 * 1024;
string datetime = DateTime.Now.ToString("ddd MMM dd yyyy HH:mm:ss", CultureInfo.CreateSpecificCulture("en-US")) + " GMT+0800 (中国标准时间)";
UploadMediaRequest uploadMediaRequest = new UploadMediaRequest()
{
UploadType = 2,
BaseRequest = baseRequest,
ClientMediaId = Utils.GetJavaTimeStamp(),
TotalLen = fileInfo.Length,
StartPos = 0,
DataLen = fileInfo.Length,
MediaType = 4,
FromUserName = user.UserName,
ToUserName = toUserName,
FileMd5 = Utils.GetFileMD5Hash(fileInfo)
};
UploadMediaResponse response = null;
//文件大小超过512Kb，分块上传。
if (fileInfo.Length > bufferLength)
{
int chunks = (int)Math.Ceiling((double)fileInfo.Length / bufferLength);
byte[] buffer = new byte[bufferLength];
Stream readStream = fileInfo.OpenRead();
int chunk = 0;
int readLength = 0;
while ((readLength = readStream.Read(buffer, 0, buffer.Length)) != 0)
{
List <FormDataItem> dataList = new List <FormDataItem>()
{
new FormDataItem("id", "WU_FILE_" + uploadMedia.Count),
new FormDataItem("name", fileInfo.Name),
new FormDataItem("type", MimeMapping.GetMimeMapping(fileInfo.Name)),
new FormDataItem("lastModifiedDate", datetime),
new FormDataItem("size", fileInfo.Length.ToString()),
new FormDataItem("chunks", chunks.ToString()),
new FormDataItem("chunk", chunk.ToString()),
new FormDataItem("mediatype", GetMediaType(fileInfo.Extension)),
new FormDataItem("uploadmediarequest", JsonConvert.SerializeObject(uploadMediaRequest, Newtonsoft.Json.Formatting.None)),
new FormDataItem("webwx_data_ticket", httpClient.CookieContainer.GetCookies(new Uri(cookieRedirectUri))["webwx_data_ticket"].Value),
new FormDataItem("pass_ticket", passTicket),
new FormDataItem("filename", fileInfo.Name, buffer, readLength)
};
string result = httpClient.PostMutipart(postUrl, dataList);
response = JsonConvert.DeserializeObject <UploadMediaResponse>(result);
chunk++;
}
}
else
{
byte[] buffer = new byte[fileInfo.Length];
Stream readStream = fileInfo.OpenRead();
int readLength = readStream.Read(buffer, 0, buffer.Length);
List <FormDataItem> dataList = new List <FormDataItem>()
{
new FormDataItem("id", "WU_FILE_" + uploadMedia.Count),
new FormDataItem("name", fileInfo.Name),
new FormDataItem("type", MimeMapping.GetMimeMapping(fileInfo.Name)),
new FormDataItem("lastModifiedDate", datetime),
new FormDataItem("size", fileInfo.Length.ToString()),
new FormDataItem("mediatype", GetMediaType(fileInfo.Extension)),
new FormDataItem("uploadmediarequest", JsonConvert.SerializeObject(uploadMediaRequest, Newtonsoft.Json.Formatting.None)),
new FormDataItem("webwx_data_ticket", httpClient.CookieContainer.GetCookies(new Uri(cookieRedirectUri))["webwx_data_ticket"].Value),
new FormDataItem("pass_ticket", passTicket),
new FormDataItem("filename", fileInfo.Name, buffer, readLength)
};
string result = httpClient.PostMutipart(postUrl, dataList);
response = JsonConvert.DeserializeObject <UploadMediaResponse>(result);
}
uploadMedia.Add(fileInfo.Name, response.MediaId);
return(response);
}
/// <summary>
/// 同步发送文件，自动分块上传，文件较大可能会卡住进程，建议异步发送
/// </summary>
/// <param name="fileInfo">文件信息</param>
/// <param name="toUserName">发送人UserName</param>
/// <returns></returns>
public SendMsgResponse SendMsg(FileInfo fileInfo, string toUserName)
{
string mediaId = string.Empty;
if (uploadMedia.Keys.Contains(fileInfo.Name))
{
mediaId = uploadMedia[fileInfo.Name];
}
else
{
UploadMediaResponse uploadMediaResponse = UploadFile(fileInfo, toUserName);
mediaId = uploadMediaResponse.MediaId;
}
string mime = MimeMapping.GetMimeMapping(fileInfo.Name);
string time = Utils.GetJavaTimeStamp().ToString();
SendMsgResponse response = null;
if (mime.StartsWith("image"))
{
string sendMsgUrl = string.Format(host + "/cgi-bin/mmwebwx-bin/webwxsendmsgimg?fun=async&f=json&lang=zh_CN&pass_ticket={0}", passTicket);
SendMediaMsgRequest sendImgMsgRequest = new SendMediaMsgRequest()
{
BaseRequest = baseRequest,
Msg = new MediaMsg()
{
ClientMsgId = time,
FromUserName = user.UserName,
LocalID = time,
MediaId = mediaId,
ToUserName = toUserName,
Type = MSGTYPE.MSGTYPE_IMAGE
},
Scene = 0
};
response = httpClient.PostJson <SendMsgResponse>(sendMsgUrl, sendImgMsgRequest);
}
else if (mime.StartsWith("video"))
{
string sendMsgUrl = string.Format(host + "/cgi-bin/mmwebwx-bin/webwxsendvideomsg?fun=async&f=json&lang=zh_CN&pass_ticket={0}", passTicket);
SendMediaMsgRequest sendImgMsgRequest = new SendMediaMsgRequest()
{
BaseRequest = baseRequest,
Msg = new MediaMsg()
{
ClientMsgId = time,
FromUserName = user.UserName,
LocalID = time,
MediaId = mediaId,
ToUserName = toUserName,
Type = MSGTYPE.MSGTYPE_IMAGE
},
Scene = 0
};
response = httpClient.PostJson <SendMsgResponse>(sendMsgUrl, sendImgMsgRequest);
}
else
{
string sendMsgUrl = string.Format(host + "/cgi-bin/mmwebwx-bin/webwxsendappmsg?fun=async&f=json&lang=zh_CN&pass_ticket={0}", passTicket);
SendMsgRequest sendAppMsgRequest = new SendMsgRequest()
{
BaseRequest = baseRequest,
Msg = new Msg()
{
ClientMsgId = time,
Content = string.Format("<appmsg appid='wxeb7ec651dd0aefa9' sdkver=''><title>{0}</title><des></des><action></action><type>6</type><content></content><url></url><lowurl></lowurl><appattach><totallen>{1}</totallen><attachid>{2}</attachid><fileext>{3}</fileext></appattach><extinfo></extinfo></appmsg>", fileInfo.Name, fileInfo.Length, mediaId, fileInfo.Extension.Substring(1)),
FromUserName = user.UserName,
ToUserName = toUserName,
LocalID = time,
Type = MSGTYPE.MSGTYPE_DOC
},
Scene = 0
};
response = httpClient.PostJson <SendMsgResponse>(sendMsgUrl, sendAppMsgRequest);
}
return(response);
}