/// <summary>
/// 处理视频请求
/// </summary>
/// <param name="requestMessage"></param>
/// <returns></returns>
public override IResponseMessageBase OnVideoRequest(RequestMessageVideo requestMessage)
{
var responseMessage = CreateResponseMessage <ResponseMessageText>();
responseMessage.Content = "您发送了一条视频信息，ID：" + requestMessage.MediaId;
#region 材并推送到客户端
Task.Factory.StartNew(async() =>
{
//上传素材
var dir = ServerUtility.ContentRootMapPath("~/App_Data/TempVideo/");
var file = await MediaApi.GetAsync(appId, requestMessage.MediaId, dir);
var uploadResult = await MediaApi.UploadTemporaryMediaAsync(appId, UploadMediaFileType.video, file, 50000);
await CustomApi.SendVideoAsync(appId, base.OpenId, uploadResult.media_id, "这是您刚才发送的视频", "这是一条视频消息");
}).ContinueWith(async task =>
{
if (task.Exception != null)
{
WeixinTrace.Log("OnVideoRequest()储存Video过程发生错误：", task.Exception.Message);
var msg = string.Format("上传素材出错：{0}\r\n{1}",
task.Exception.Message,
task.Exception.InnerException != null
? task.Exception.InnerException.Message
: null);
await CustomApi.SendTextAsync(appId, base.OpenId, msg);
}
});
#endregion
return(responseMessage);
}
private async Task <string> DownloadWechatImgs(string imgs, string appId)
{
if (string.IsNullOrEmpty(imgs))
{
return(string.Empty);
}
string localImgs = string.Empty;
string[] serverIds = imgs.Split(',').Where(s => !string.IsNullOrEmpty(s)).ToArray();
string uploadPath = GetUploadPath();//获取相对路径
string fullUpLoadPath = _hostingEnvironment.WebRootPath + uploadPath;
foreach (var id in serverIds)
{
if (id.IndexOf("BanquetPhotos") > 0)
{
localImgs = localImgs + id + ",";
}
else
{
var msg = await MediaApi.GetAsync(appId, id, fullUpLoadPath);
Logger.InfoFormat("serverId:{0} msg:{1}", id, msg);
localImgs = localImgs + uploadPath + id + ".jpg,"; //保存相对路径
}
}
if (localImgs.Length > 0)
{
localImgs = localImgs.Substring(0, localImgs.Length - 1);
}
return(localImgs);
}
public static async Task <string> DownloadMedia(string mediaId, string dir)
{
var appId = Config.SenparcWeixinSetting.WeixinAppId;
//var token = await AccessTokenContainer.GetAccessTokenAsync(appId);
//var fileUrl = $"http://file.api.weixin.qq.com/cgi-bin/media/get?access_token={token}&media_id={mediaId}";
//var fileName = $"{dir}\\{mediaId}.jpg";
//System.IO.Directory.CreateDirectory(dir);
//using(var wc=new System.Net.WebClient())
//{
// wc.DownloadFile(new Uri(fileUrl), fileName);
//}
//return fileName;
//return MediaApi.Get(appId, mediaId, dir);
//todo:
//使用原方法时报httpclient 的A task was canceled.错误,当移值新服务器时出现,但旧服务器没有任何问题,猜测服务器对httpclient请求有限制
return(await MediaApi.GetAsync(appId, mediaId, dir));
}
public async Task <bool> DownloadTemplateImageAsync(string serverId, string fileName, bool getNewToken = false)
{
var accessToken = AccessTokenContainer.TryGetAccessToken(SiteConfig.AppId, SiteConfig.AppSecret,
getNewToken);
using (MemoryStream ms = new MemoryStream())
{
await MediaApi.GetAsync(accessToken, serverId, ms);
//保存到文件
ms.Position = 0;
byte[] buffer = new byte[1024];
int bytesRead = 0;
//判断是否上传成功
byte[] topBuffer = new byte[1];
await ms.ReadAsync(topBuffer, 0, 1);
if (topBuffer[0] == '{')
{
//写入日志
ms.Position = 0;
byte[] logBuffer = new byte[1024];
await ms.ReadAsync(logBuffer, 0, logBuffer.Length);
string str = System.Text.Encoding.Default.GetString(logBuffer);
Senparc.Log.LogUtility.Weixin.InfoFormat("下载失败：{0}。serverId：{1}", str, serverId);
return(false);
}
else
{
ms.Position = 0;
using (FileStream fs = new FileStream(fileName, FileMode.Create))
{
while ((bytesRead = await ms.ReadAsync(buffer, 0, buffer.Length)) != 0)
{
await fs.WriteAsync(buffer, 0, bytesRead);
}
await fs.FlushAsync();
}
}
}
return(true);
}
