public Tuple <string, int, int> GenerateImagePreview(string localPath)
{
string ext = Path.GetExtension(localPath);
newLocalPath = string.Empty;
newLocalPath = localPath.Replace(ext, "_p" + ext);
//压缩图片
ImageAction.ThumbnailResult ret = ImageAction.ThumbnailImage(localPath, newLocalPath);
if (ret.Success)
{
return(new Tuple <string, int, int>(accessDir + Path.GetFileName(newLocalPath), ret.ImageWidth, ret.ImageHeight));
}
return(null);
}
public async Task <ResxResult> SaveStream()
{
provider = new MultipartFormDataMemoryStreamProvider();
await request.Content.ReadAsMultipartAsync(provider);
if (provider == null ||
provider.FileData == null ||
provider.FileData.Count <= 0)
{
throw new Exception("上传资源不能为空");
}
var fileCount = provider.FileData.Count();
if (fileCount > ResxConfigManager.RESX_MAX_COUNT)
{
throw new Exception("上传资源数量超过大小");
}
var count = provider.FileData.Where(f => !this.resxModel.ResxTypes.Contains(Path.GetExtension(f.Headers.ContentDisposition.FileName.Replace("\"", "")))).Count();
if (count > 0)
{
throw new Exception("上传包含未知资源类型");
}
List <Stream> streamList = new List <Stream>();
List <string> streamNames = new List <string>();
foreach (MultipartFileData file in provider.FileData)
{
Stream stream = ((MultipartFileDataStream)file).Stream;
if (stream.Length > this.resxModel.ResxSize && this.resxModel.ResxSize > 0)
{
throw new Exception("上传资源超过大小");
}
else
{
streamList.Add(stream);
streamNames.Add(file.Headers.ContentDisposition.FileName.Replace("\"", ""));
}
}
int i = 0;
ResxResult result = new ResxResult()
{
Success = false
};
foreach (Stream stream in streamList)
{
string localPath = Path.Combine(rootDir, streamNames[i]);
using (StreamWriter sw = new StreamWriter(localPath))
{
stream.CopyTo(sw.BaseStream);
sw.Flush();
string orgUrl = Path.Combine(accessDir, streamNames[i]);
result.Success = true;
result.OriginalUrl = orgUrl;
result.OriginalSize = sw.BaseStream.Length;
//检测是否要生成预览图片
if (this.resxModel.IsPreview() && sw.BaseStream.Length > ResxConfigManager.PREVIEW_IMAGE_SIZE)
{
//log.WriterLog("检测是否要生成预览图片sw.BaseStream.Length=" + sw.BaseStream.Length + " PREVIEW_IMAGE_SIZE=" + ResxConfigManager.PREVIEW_IMAGE_SIZE);
string ext = Path.GetExtension(streamNames[i]);
string newLocalPath = localPath.Replace(ext, "_p" + ext);
//压缩图片
ImageAction.ThumbnailResult ret = ImageAction.ThumbnailImage(localPath, newLocalPath);
if (ret.Success)
{
result.PreviewUrl = orgUrl.Replace(ext, "_p" + ext);
//result.PreviewSize = ;
result.Width = ret.ImageWidth;
result.Height = ret.ImageHeight;
//log.WriterLog("压缩成功：" + result.PreviewUrl);
}
else
{
result.PreviewUrl = orgUrl;
result.PreviewSize = sw.BaseStream.Length;
//log.WriterLog("压缩失败：" + result.PreviewUrl);
}
}
//检测是否是语音文件
//.....
//检测是否是视频文件
//.....
}
i++;
}
return(result);
}