public Crawler Fetch()
{
if (!(SourceUrl.IsExternalAddress()))
{
State = "INVALID_URL";
return(this);
}
var request = WebRequest.Create(SourceUrl) as HttpWebRequest;
using (var response = request.GetResponse() as HttpWebResponse)
{
if (response.StatusCode != HttpStatusCode.OK)
{
State = "Url returns " + response.StatusCode + ", " + response.StatusDescription;
return(this);
}
if (response.ContentType.IndexOf("image") == -1)
{
State = "Url is not an image";
return(this);
}
ServerUrl = PathFormatter.Format(Path.GetFileName(SourceUrl), UeditorConfig.GetString("catcherPathFormat"));
var savePath = Server.MapPath(ServerUrl);
if (!Directory.Exists(Path.GetDirectoryName(savePath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(savePath));
}
try
{
using (var stream = response.GetResponseStream())
{
using (var ms = new MemoryStream())
{
stream.CopyTo(ms);
File.WriteAllBytes(savePath, ms.GetBuffer());
}
//var (url, success) = CommonHelper.UploadImage(savePath);
//if (success)
//{
// ServerUrl = url;
// BackgroundJob.Enqueue(() => File.Delete(savePath));
//}
}
State = "SUCCESS";
}
catch (Exception e)
{
State = "抓取错误：" + e.Message;
}
return(this);
}
}
public override void Process()
{
try
{
_start = string.IsNullOrEmpty(Request["start"]) ? 0 : Convert.ToInt32(Request["start"]);
_size = string.IsNullOrEmpty(Request["size"]) ? UeditorConfig.GetInt("imageManagerListSize") : Convert.ToInt32(Request["size"]);
}
catch (FormatException)
{
_state = ResultState.InvalidParam;
WriteResult();
return;
}
var buildingList = new List <string>();
try
{
var localPath = Server.MapPath(_pathToList);
buildingList.AddRange(Directory.GetFiles(localPath, "*", SearchOption.AllDirectories).Where(x => _searchExtensions.Contains(Path.GetExtension(x).ToLower())).Select(x => _pathToList + x.Substring(localPath.Length).Replace("\\", "/")));
_total = buildingList.Count;
_fileList = buildingList.OrderBy(x => x).Skip(_start).Take(_size).ToArray();
}
catch (UnauthorizedAccessException)
{
_state = ResultState.AuthorizError;
}
catch (DirectoryNotFoundException)
{
_state = ResultState.PathNotFound;
}
catch (IOException)
{
_state = ResultState.IOError;
}
finally
{
WriteResult();
}
}
