[tip]用jsp实现直接下载文件而不是在浏览器中打开的功能

<%

// example:

// <a href="download.jsp?path=img/&name=test.gif">download image</a>

String root = getServletContext().getRealPath("/");

String path = request.getParameter("path");

String name = request.getParameter("name");

response.setContentType("unknown");

response.addHeader("Content-Disposition", "filename=\"" + name + "\"");

try

{

java.io.OutputStream os = response.getOutputStream();

java.io.FileInputStream fis = new java.io.FileInputStream(root + path + name);

byte[] b = new byte[1024];

int i = 0;

while ( (i = fis.read(b)) > 0 )

{

os.write(b, 0, i);

}

fis.close();

os.flush();

os.close();

}

catch ( Exception e )

{

}

%>