/// <summary>
/// 单个文件下载
/// </summary>
/// <returns></returns>
public object Read()
{
OThinker.H3.Tracking.UserLog log = null;
//安卓微信/钉钉中打开文件 弃用
if (this.IsMobile && (IsWeChat || IsDingTalk) && IsAndroid && false)
{
// 记录打开日志
log = new Tracking.UserLog(
Tracking.UserLogType.OpenAttachment,
this.UserValidator.UserID,
this.BizObjectSchemaCode,
this.BizObjectID,
this.BizObjectID,
string.Empty,
string.Empty,
null,
SheetUtility.GetClientIP(Request),
SheetUtility.GetClientPlatform(Request),
SheetUtility.GetClientBrowser(Request));
this.Engine.UserLogWriter.Write(log);
string attachmentUrl = this.GetAttachmentRedirectUrl();
if (!string.IsNullOrEmpty(attachmentUrl))
{
Response.Redirect(attachmentUrl);
}
return(null);
}
Attachment attachment = this.Engine.BizObjectManager.GetAttachment(
UserID,
this.BizObjectSchemaCode,
this.BizObjectID,
this.AttachmentID);
if (attachment == null || attachment.Content == null || attachment.Content.Length == 0)
{
//AlertAndClose(this.PortalResource.GetString("ReadAttachment_AttachmentIsNull"));
//return;
}
// 记录打开日志
log = new Tracking.UserLog(
Tracking.UserLogType.OpenAttachment,
UserID,
attachment.BizObjectSchemaCode,
attachment.BizObjectId,
attachment.BizObjectId,
string.Empty,
attachment.FileName,
null,
SheetUtility.GetClientIP(Request),
SheetUtility.GetClientPlatform(Request),
SheetUtility.GetClientBrowser(Request));
this.Engine.UserLogWriter.Write(log);
//保存文件到服务器
string fileName = attachment.ObjectID + Path.GetExtension(attachment.FileName);
string savePath = Path.Combine(Server.MapPath("~/TempImages"), fileName);
using (FileStream fs = new FileStream(savePath, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
using (BinaryWriter bw = new BinaryWriter(fs))
{
bw.Write(attachment.Content);
bw.Close();
}
}
if (this.IsMobile)
{
// 移动办公app打开方式，则先下载到临时文件夹，再输出文件地址
if (this.AppLogin)
{
var url = string.Format(this.PortalRoot + "/TempImages/{0}", fileName);
var result = new
{
Url = string.Format(this.PortalRoot + "/TempImages/{0}", fileName),
Extension = Path.GetExtension(attachment.FileName).ToLower()
};
return(Json(result, JsonRequestBehavior.AllowGet));
}
else
{
Response.Redirect(Path.Combine(PortalUri, "TempImages/" + fileName));
return(null);
}
}
string inLine = string.Empty;
if (Browse_Extension.IndexOf(Path.GetExtension(attachment.FileName).ToLower()) != -1)
{
inLine = "inline;";
}
else
{
inLine = "attachment;";
}
// 输出附件
Response.Buffer = true;
Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.AddHeader("Content-Disposition", inLine + "filename=" + HttpUtility.UrlEncode(attachment.FileName, System.Text.Encoding.UTF8));
Response.AddHeader("Content-Type", attachment.ContentType);
//Response.AddHeader("Content-Length", attachment.Content.LongLength.ToString());
Response.TransmitFile(savePath);
Response.End();
System.IO.File.Delete(savePath);
return(null);
}