/// <summary>删除记录</summary>
/// <param name="id">标识</param>
public void Delete(string id)
{
if (string.IsNullOrEmpty(id))
{
return;
}
// 01.删除物理文件信息
IAttachmentFileInfo file = FindOne(id);
if (file != null)
{
string path = file.VirtualPath.Replace("{uploads}", AttachmentStorageConfigurationView.Instance.PhysicalUploadFolder);
if (File.Exists(path))
{
File.Delete(path);
}
}
// 02.删除数据库信息
Dictionary <string, object> args = new Dictionary <string, object>();
args.Add("WhereClause", string.Format(" Id IN ('{0}') ", StringHelper.ToSafeSQL(id).Replace(",", "','")));
this.ibatisMapper.Delete(StringHelper.ToProcedurePrefix(string.Format("{0}_Delete", this.tableName)), args);
// 03.删除分布式文件数据
DistributedFileStorage.Delete(id);
}
/// <summary>下载</summary>
/// <param name="doc">Xml 文档对象</param>
/// <returns>返回操作结果</returns>
public ActionResult Download(string options)
{
JsonData request = JsonMapper.ToObject(options == null ? "{}" : options);
// 实体数据标识
string id = !request.Keys.Contains("id") ? string.Empty : request["id"].ToString();
IAttachmentFileInfo param = AttachmentStorageContext.Instance.AttachmentFileService[id];
if (param == null)
{
KernelContext.Log.Info("file not found id:" + id);
ApplicationError.Write(404);
}
else
{
if (param != null && param.FileData == null)
{
KernelContext.Log.Info("file data is null id:" + id);
// 下载分布式文件数据
param.FileData = DistributedFileStorage.Download(param);
}
// [容错] 由于人为原因将服务器上的文件删除。
if (param.FileData == null)
{
ApplicationError.Write(404);
}
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment;filename=" + EncodeFileName(param.AttachmentName));
Response.BinaryWrite(param.FileData);
}
Response.End();
return(Content(string.Empty));
}
/// <summary>获取分页内容</summary>
/// <param name="doc">Xml 文档对象</param>
/// <returns>返回操作结果</returns>
public string Download(XmlDocument doc)
{
this.ProcessRequest(HttpContext.Current);
string id = HttpContext.Current.Request.QueryString["id"];
IAttachmentFileInfo param = AttachmentStorageContext.Instance.AttachmentFileService[id];
if (param == null)
{
ApplicationError.Write(404);
}
else
{
if (param != null && param.FileData == null)
{
// 下载分布式文件数据
param.FileData = DistributedFileStorage.Download(param);
}
// [容错] 由于人为原因将服务器上的文件删除。
if (param.FileData == null)
{
ApplicationError.Write(404);
}
HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + EncodeFileName(param.AttachmentName));
HttpContext.Current.Response.BinaryWrite(param.FileData);
}
HttpContext.Current.Response.End();
return(string.Empty);
}
