系统中需要写
个下载文件功能
以前用BCB
API写很烦琐
忽然想起有个API就可以搞定了于是大早就来搜索这个API就是UrlDownloadToFile不仅如此Delphi些Control控件也可以轻松实现下载如NMHTTP指定NMHTTP1.InputFileMode := ture; 指定Body为本地文件名指定Get就可以下载了下面是详细代码均出自CSDN我把它们都整理到这儿让大家方便查阅
=uses UrlMon;
function DownloadFile(Source, Dest:
): Boolean; begin
try
Result := UrlDownloadToFile(nil, PChar(source), PChar(Dest), 0, nil) = 0;
except
Result := False;
end;
end;
DownloadFile('http://www.borland.com/delphi6.zip, 'c:\kylix.zip') then ShowMessage('Download succesful')
ShowMessage('Download unsuccesful')例程:
Uses URLMon, ShellApi;
function DownloadFile(SourceFile, DestFile:
): Boolean;begin
try
Result := UrlDownloadToFile(nil, PChar(SourceFile), PChar(DestFile), 0, nil) = 0;
except
Result := False;
end;
end;
procedure TForm1.Button1.Click(Sender: TObject);
const
// URL Location
SourceFile := 'http://www.google.com/
l/de/images/home_title.g';// Where to save the file
DestFile := 'c:\temp\google-image.g
';begin
DownloadFile(SourceFile, DestFile) thenbegin
ShowMessage('Download succesful!');
// Show downloaded image in your browser
ShellExecute(Application.Handle,PChar('open'),PChar(DestFile),PChar(''),nil,SW_NORMAL)
end
ShowMessage('Error while downloading ' + SourceFile)
end;
=加入如下代码:
NMHTTP1.InputFileMode := ture;
NMHTTP1.Body := '本地文件名';
NMHTTP1.Header := 'Head.txt';
NMHTTP1.OutputFileMode := FALSE;
NMHTTP1.ReportLevel := Status_Basic;
NMHTTP1.Proxy := '代理服务器
IP地址';NMHTTP1.ProxyPort := '代理服务器
端口号';With NMHTTP1.HeaderInfo do
Begin
Cookie := '';
LocalMailAddress := '';
LocalProgram := '';
Referer := '';
UserID := '用户名称';
Password := '用户口令';
End;
NMHTTP1.Get(‘http://www.abcdefg.com/software/a.zip’);
试试吧
Delphi目录中有TNMHTTPControl控件例子NT4+,Win95+,IE3+,你可以用URL Moniker功能uses URLMon;
...
OleCheck(URLDownloadToFile(nil,'URL','Filename',0,nil));
其中最后
个参数你还可以传入个IBindStatusCallback实现以跟踪下载进度或控制中止下载简单场合句话就搞定了--回复得分 0--
BTW, URL Moniker封装了大多数URL
而不是像NMHTTP那样封装协议因此你可以用URLDownloadToFile下载HTTPFTP甚至本地文件和局域网文件还有其他custom moniker比如MSITSTORE(MSDN Library文档moniker实现)用IdHTTPControl控件吧！
var
DownLoadFile:TFileStream;
beginio
DownLoadFile:=TFileStream.Create('c:\aa.rar',fmCreate);
IdHTTP1.Get('http://www.sina.com.cn/download/aa.rar',DownLoadFile);
DownLoadFile.Free;
end;
//---------------------------
结束
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