public ActionResult ShowImage(string mediaId)
{
var smallFileName = CustomerMessage.GetCacheSmallPathForTemporaryMedia(mediaId);
var targetFileName = smallFileName;
if (!System.IO.File.Exists(smallFileName))
{ //如果没有小图，说明没进行缩小处理过
var fileName = CustomerMessage.GetCachePathForTemporaryMedia(mediaId);
if (!System.IO.File.Exists(fileName)) //如果没有原图，则需要下载下来
{
var accessToken = GetAccessToken();
using (FileStream createFs = new FileStream(fileName, FileMode.Create))
{
MediaApi.Get(accessToken, mediaId, createFs);
}
}
try
{
ResizeImage(fileName, smallFileName);
}
catch (Exception ex)
{
_logger.LogError(ex, "缩放出错,文件名：{0}", fileName);
targetFileName = fileName; //显示的时候用原图显示。
}
}
FileStream fs = new FileStream(targetFileName, FileMode.Open);
return(File(fs, "image/jpeg"));
}
public async Task <APIResult> SendCustomerImage([FromBody] SendCustomerImageArgsModel args)
{
if (string.IsNullOrEmpty(args.OpenId))
{
throw new ArgumentNullException("OpenId");
}
var user = GetUsername();
wechatCoreDb.EnsureIsCustomerSessionWorker(args.OpenId, user);
string requestStrValue = args.Data.Substring(args.Data.IndexOf(',') + 1); //代表 图片 的base64编码数据
string requestFileExtension = args.Data.Split(new char[] { ';' })[0].Substring(args.Data.IndexOf('/') + 1); //获取后缀名
var buffer = Convert.FromBase64String(requestStrValue);
var folderPath = $"{Directory.GetCurrentDirectory()}/App_Data/Weixin/TemporaryMedia";
if (!Directory.Exists(folderPath))
{
Directory.CreateDirectory(folderPath);
}
var fileName = $"{folderPath}/{DateTime.Now.ToString("yyyyMMddHHhhss")}{CommonUtil.CreateNoncestr(6)}.{requestFileExtension}";
using (FileStream fs = new FileStream(fileName, FileMode.Create))
{
fs.Write(buffer, 0, buffer.Length);
////通过代码审查说，使用了using,不需要再次调用close
//fs.Close();
}
//fileName = @"C:\Xiang\Temp\1.jpg";
var accessToken = GetAccessToken();
//var uploadResult = Senparc.Weixin.MP.AdvancedAPIs.MediaApi.UploadTemporaryMedia(accessToken, UploadMediaFileType.image, fileName);
var uploadResult = await WechatMediaApiProxy.UploadAsync <Senparc.Weixin.MP.AdvancedAPIs.Media.UploadTemporaryMediaResult>(accessToken, "image", fileName);
var data = new
{
msgType = "image",
mediaId = uploadResult.media_id
};
System.IO.File.Move(fileName, CustomerMessage.GetCachePathForTemporaryMedia(data.mediaId));
var msg = new CustomerMessage()
{
FromUser = GetUsername(),
ToUser = args.OpenId,
Time = DateTime.Now,
Content = Newtonsoft.Json.JsonConvert.SerializeObject(data),
ChatFlag = args.OpenId
};
wechatCoreDb.AddToCustomerMessage(msg);
wechatCoreDb.UpdateCustomerSessionTime(args.OpenId);
wechatCoreDb.SaveChanges();
return(Success());
}