asp下载 b5.apk下载安装
今天给各位分享asp下载的知识，其中也会对b5.apk下载安装进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
asp下载代码问题
可以的,你设置一个中转网页download.asp
然后以此种格式显示在网页上
<a rel="external nofollow" href="../download.asp?id=1834">金山快译</a>
在download.asp中这么设置:
<%
id=request("id")
'数据库中每个ID对应一个下载地址
'根据id找到下载地址,然后转到对应下载地址
response.redirect""
%>
这样不仅可以实现自动生成中文名称,隐藏文件真实路径,再通过一些设置(如检查访问页的域名)来作防盗链设置
一个关于asp.net(c#)下载文件的问题
文件路径是不是有中文啊？zh-tw这是繁体的！
asp.net2.0以后，我们有了很多种文件下载的选择。
public partial class FileDownLoad: System.Web.UI.Page
{
//提供下载的文件，不编码的话文件名会乱码
private string fileName= HttpContext.Current.Server.UrlEncode("规范.rar");
private string filePath= HttpContext.Current.Server.MapPath("规范.rar");
//使用TransmifFile下载文件
protected void btnDL1_Click(object sender, EventArgs e)
{
FileInfo info= new FileInfo(filePath);
long fileSize= info.Length;
Response.Clear();
Response.ContentType="application/x-zip-compressed";
Response.AddHeader("Content-Disposition","attachment;filename="+ fileName);
//不指明Content-Length用Flush的话不会显示下载进度
Response.AddHeader("Content-Length", fileSize.ToString());
Response.TransmitFile(filePath, 0, fileSize);
Response.Flush();
Response.Close();
}
//使用WriteFile下载文件
protected void btnDL2_Click(object sender, EventArgs e)
{
FileInfo info= new FileInfo(filePath);
long fileSize= info.Length;
Response.Clear();
Response.ContentType="application/octet-stream";
Response.AddHeader("Content-Disposition","attachement;filename="+ fileName);
//指定文件大小
Response.AddHeader("Content-Length", fileSize.ToString());
Response.WriteFile(filePath, 0, fileSize);
Response.Flush();
Response.Close();
}
//使用OutputStream.Write分块下载文件
protected void btnDL3_Click(object sender, EventArgs e)
{
//指定块大小
long chunkSize= 102400;
//建立一个100K的缓冲区
byte[] buffer= new byte[chunkSize];
//已读的字节数
long dataToRead= 0;
FileStream stream= null;
try
{
//打开文件
stream= new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
dataToRead= stream.Length;
//添加Http头
Response.ContentType="application/octet-stream";
Response.AddHeader("Content-Disposition","attachement;filename="+ fileName);
Response.AddHeader("Content-Length", dataToRead.ToString());
while(dataToRead> 0)
{
if(Response.IsClientConnected)
{
int length= stream.Read(buffer, 0, Convert.ToInt32(chunkSize));
Response.OutputStream.Write(buffer, 0, length);
Response.Flush();
Response.Clear();
dataToRead-= length;
}
else
{
//防止client失去连接
dataToRead=-1;
}
}
}
catch(Exception ex)
{
Response.Write("Error:"+ ex.Message);
}
finally
{
if(stream!= null)
{
stream.Close();
}
Response.Close();
}
}
//使用BinaryWrite下载文件，大文件效率不行
protected void btnDL4_Click(object sender, EventArgs e)
{
FileStream stream= null;
try
{
//读文件,大文件一次读入会占用大量内存
stream= new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
byte[] bytes= new byte[stream.Length];
stream.Read(bytes, 0, bytes.Length);
stream.Close();
//添加Http头
Response.ContentType="application/octet-stream";
Response.AddHeader("Content-Disposition","attachement;filename="+ fileName);
Response.AddHeader("Content-Length", bytes.Length.ToString());
Response.BinaryWrite(bytes);
Response.Flush();
}
catch(Exception ex)
{
Response.Write("Error:"+ ex.Message);
}
finally
{
if(stream!= null)
{
stream.Close();
}
Response.Close();
}
}
//使用BinaryWrite分块下载文件
protected void btnDL5_Click(object sender, EventArgs e)
{
//指定区块和缓冲区
long chunkSize= 102400;
byte[] buffer= new byte[chunkSize];
FileStream stream= null;
long dataToRead= 0;
try
{
stream= new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
dataToRead= stream.Length;
//添加Http头
Response.ContentType="application/octet-stream";
Response.AddHeader("Content-Disposition","attachement;filename="+ fileName);
Response.AddHeader("Content-Length", dataToRead.ToString());
while(dataToRead> 0)
{
if(Response.IsClientConnected)
{
int length= stream.Read(buffer, 0, Convert.ToInt32(chunkSize));
Response.BinaryWrite(buffer);
Response.Flush();
Response.Clear();
dataToRead-= length;
}
else
{
dataToRead=-1;
}
}
}
catch(Exception ex)
{
Response.Write("Error:"+ ex.Message);
}
finally
{
if(stream!= null)
{
stream.Close();
}
Response.Close();
}
}
}
public partial class FileDownLoad: System.Web.UI.Page{//提供下载的文件，不编码的话文件名会乱码 private string fileName= HttpContext.Current.Server.UrlEncode("规范.rar"); private string filePath= HttpContext.Current.Server.MapPath("规范.rar");//使用TransmifFile下载文件 protected void btnDL1_Click(object sender, EventArgs e){ FileInfo info= new FileInfo(filePath); long fileSize= info.Length; Response.Clear(); Response.ContentType="application/x-zip-compressed"; Response.AddHeader("Content-Disposition","attachment;filename="+ fileName);//不指明Content-Length用Flush的话不会显示下载进度 Response.AddHeader("Content-Length", fileSize.ToString()); Response.TransmitFile(filePath, 0, fileSize); Response.Flush(); Response.Close();}//使用WriteFile下载文件 protected void btnDL2_Click(object sender, EventArgs e){ FileInfo info= new FileInfo(filePath); long fileSize= info.Length; Response.Clear(); Response.ContentType="application/octet-stream"; Response.AddHeader("Content-Disposition","attachement;filename="+ fileName);//指定文件大小 Response.AddHeader("Content-Length", fileSize.ToString()); Response.WriteFile(filePath, 0, fileSize); Response.Flush(); Response.Close();}//使用OutputStream.Write分块下载文件 protected void btnDL3_Click(object sender, EventArgs e){//指定块大小 long chunkSize= 102400;//建立一个100K的缓冲区 byte[] buffer= new byte[chunkSize];//已读的字节数 long dataToRead= 0; FileStream stream= null; try{//打开文件 stream= new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read); dataToRead= stream.Length;//添加Http头 Response.ContentType="application/octet-stream"; Response.AddHeader("Content-Disposition","attachement;filename="+ fileName); Response.AddHeader("Content-Length", dataToRead.ToString()); while(dataToRead> 0){ if(Response.IsClientConnected){ int length= stream.Read(buffer, 0, Convert.ToInt32(chunkSize)); Response.OutputStream.Write(buffer, 0, length); Response.Flush(); Response.Clear(); dataToRead-= length;} else{//防止client失去连接 dataToRead=-1;}}} catch(Exception ex){ Response.Write("Error:"+ ex.Message);} finally{ if(stream!= null){ stream.Close();} Response.Close();}}//使用BinaryWrite下载文件，大文件效率不行 protected void btnDL4_Click(object sender, EventArgs e){ FileStream stream= null; try{//读文件,大文件一次读入会占用大量内存 stream= new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read); byte[] bytes= new byte[stream.Length]; stream.Read(bytes, 0, bytes.Length); stream.Close();//添加Http头 Response.ContentType="application/octet-stream"; Response.AddHeader("Content-Disposition","attachement;filename="+ fileName); Response.AddHeader("Content-Length", bytes.Length.ToString()); Response.BinaryWrite(bytes); Response.Flush();} catch(Exception ex){ Response.Write("Error:"+ ex.Message);} finally{ if(stream!= null){ stream.Close();} Response.Close();}}//使用BinaryWrite分块下载文件 protected void btnDL5_Click(object sender, EventArgs e){//指定区块和缓冲区 long chunkSize= 102400; byte[] buffer= new byte[chunkSize]; FileStream stream= null; long dataToRead= 0; try{ stream= new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read); dataToRead= stream.Length;//添加Http头 Response.ContentType="application/octet-stream"; Response.AddHeader("Content-Disposition","attachement;filename="+ fileName); Response.AddHeader("Content-Length", dataToRead.ToString()); while(dataToRead> 0){ if(Response.IsClientConnected){ int length= stream.Read(buffer, 0, Convert.ToInt32(chunkSize)); Response.BinaryWrite(buffer); Response.Flush(); Response.Clear(); dataToRead-= length;} else{ dataToRead=-1;}}} catch(Exception ex){ Response.Write("Error:"+ ex.Message);} finally{ if(stream!= null){ stream.Close();} Response.Close();}}}
以上除了第四种不推荐以外，其他的都可以，但是个人感觉分块下载的要好一点。没有仔细测试，所以可能有问题。
注意：对于中文文件名要编码才能正确显示。对于长中文文件名(UTF8编码后大于153字节的中文)即使编码了，还是有问题的，大家可以参考这个链接。
在iis启用后,打开asp页面提示下载
我知道，提示下载说明你设置的路径正常，iis工作也正常，只是你有些小地方没有设置正确！
解决方法是：打开iis，在网站上右键-属性-主目录，执行权限设成“纯脚本”，如果还不行就说明你映射有问题，解决办法是点配置，里面你一看就知道了，增加个asp的映射就可以了！
OK，关于asp下载和b5.apk下载安装的内容到此结束了，希望对大家有所帮助。