FFileName:='g:\aaa.zip';
FURL:='http://www.csdn.net/cnshare/soft/openfile.asp?kind=1&id=20520';
if not FileExists(FFileName) then
begin
fHandle := CreateFile(PChar(FFileName), GENERIC_WRITE, FILE_SHARE_WRITE, nil,
CREATE_NEW, 0, 0);
try
FIdHttp.Head(FURL);
FileLength := FIdHttp.Response.ContentLength;
FileSeek(fHandle, FileLength, 0);
finally
FileClose(fHandle);
end;
end;
FFileStream := TFileStream.Create(FFileName, fmOpenWrite or fmShareDenyNone);
FIdHttp.Get(FURL, FFileStream);
在FIdHttp.Head(FURL)时保readtimeout,但我设了1小时
在Get时报'HTTP/1.1 302 Object moved' 到底什么错?
FURL:='http://www.csdn.net/cnshare/soft/openfile.asp?kind=1&id=20520';
if not FileExists(FFileName) then
begin
fHandle := CreateFile(PChar(FFileName), GENERIC_WRITE, FILE_SHARE_WRITE, nil,
CREATE_NEW, 0, 0);
try
FIdHttp.Head(FURL);
FileLength := FIdHttp.Response.ContentLength;
FileSeek(fHandle, FileLength, 0);
finally
FileClose(fHandle);
end;
end;
FFileStream := TFileStream.Create(FFileName, fmOpenWrite or fmShareDenyNone);
FIdHttp.Get(FURL, FFileStream);
在FIdHttp.Head(FURL)时保readtimeout,但我设了1小时
在Get时报'HTTP/1.1 302 Object moved' 到底什么错?
作者:atondelphi中的nmftp控件中Download函数只能下载一个文件,没有提供一个下载整个目录(包含子目录)的函数。我编写了个实现目录下载功能的方法,需要用到该功能的用户可参考一下。file://目录下载function tftp.ex_download(remote_dir,local_dir:string):boolean;var i,j,count1:integer; att,ss:string; current_dir:string; temp_dir:string;begin try begin NMFTP1.ChangeDir(remote_dir); current_dir:=remote_dir; temp_dir:=copy(current_dir,2,length(current_dir)); if not DirectoryExists(local_dir) then CreateDir(local_dir); if not directoryexists(local_dir+temp_dir) then createdir(local_dir+temp_dir); nmftp1.ParseList:=true; NMftp1.list; count1:=nmftp1.FTPDirectoryList.name.Count; for i:=0 to count1-1 do begin file://必须 NMFTP1.ChangeDir(current_dir); nmftp1.list; ss:=nmftp1.FTPDirectoryList.name.Strings[i]; att:=nmftp1.FTPDirectoryList.Attribute.Strings[i]; if (copy(pchar(att),1,1)<>'d')and(copy(pchar(att),1,1)<>'D') then begin if not DirectoryExists(local_dir) then CreateDir(local_dir); NMFTP1.Download(current_dir+ss,local_dir+temp_dir+ss); end else begin if not directoryexists(local_dir+temp_dir+ss) then createdir(local_dir+temp_dir+ss); file://递归调用 ex_download(remote_dir+ss+'\',local_dir); end; end; result:=true; end except On E:Exception do begin result:=false; end; end;end;
出现异常,一出现异常就什么都收不到了(实际数据已经传会本地了的,只是控件没有接收)。但是有不少网站确实也会用 302(Found)作为正常的应答码!这是只能自己去该Indy的相关原代码进行处理了。注意对于URL本身不是文件URL的(如上例),必须进行两次的GET操作才能获取到文件的(第一次获取到真正的URL,然后才开始下载。