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asp.net(c#)从url网络地址下载图片或文件到本地硬盘

2008-04-03 15:40 1081 查看

ref http://hi.baidu.com/moremoretealy/blog/item/b58d3773e506261c8601b050.html
asp.net(c#)从url网络地址下载图片或文件到本地硬盘
2007-01-14 12:53

using System;
using System.Net;
using System.IO;

namespace Com.Net
{
/// <summary>
/// Image 的摘要说明。
/// </summary>
public class Image
{
public Image()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
/// <summary>
/// 从图片地址下载图片到本地磁盘
/// </summary>
/// <param name="ToLocalPath">图片本地磁盘地址</param>
/// <param name="Url">图片网址</param>
/// <returns></returns>
public static bool SavePhotoFromUrl(string FileName,string Url)
{
bool Value=false;
WebResponse response = null;
Stream stream = null;

try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);

response = request.GetResponse();
stream = response.GetResponseStream();

if( !response.ContentType.ToLower().StartsWith("text/") )
{
value="/Image.SaveBinaryFile(response,FileName);
}

}
catch(Exception" err)
{
string aa=err.ToString();
}
return Value;
}
/// <summary>
/// Save a binary file to disk.
/// </summary>
/// <param name="response">The response used to save the file</param>
// 将二进制文件保存到磁盘
private static bool SaveBinaryFile(WebResponse response,string FileName)
{
bool Value=true;
byte []buffer = new byte[1024];

try
{
if(Com.File.FileUtil.FileExists(FileName))
Com.File.FileUtil.DeleteFile(FileName);
Stream outStream =System.IO.File.Create( FileName );
Stream inStream = response.GetResponseStream();

int l;
do
{
l = inStream.Read(buffer,0,buffer.Length);
if(l>0)
outStream.Write(buffer,0,l);
}
while(l>0);

outStream.Close();
inStream.Close();
}
catch
{
Value=false;
}
return Value;
}
}
}

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