前台 jsp
function downVideo(value,row,index){
return '<a href="<%=basePath%>admin/video/video!fileDown.ds?uname='+row.uname+'&filepath='+value+'">下载</a>';
}
后台java ：
action：
public void fileDown() {
FileUtil.download(filepath, getRequest().getParameter("uname")+filepath.substring(filepath.lastIndexOf("."),filepath.length()), getResponse());
}
FileUtil：
public static void download(String filepath, String filename, HttpServletResponse response) {
response.setContentType("application/x-download;charset=utf-8");
OutputStream outp = null;
FileInputStream in = null;
try {
response.addHeader("Content-Disposition", "attachment;filename="+new String(filename.getBytes("gbk"),"ISO-8859-1"));
in = new FileInputStream(ServletActionContext.getServletContext().getRealPath("/")+filepath);
outp = response.getOutputStream();
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
byte[] b = new byte[1024];
int i = 0;
try {
while ((i = in.read(b, 0, 1024)) != -1) {
outp.write(b, 0, i);
outp.flush();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
in = null;
}
if (outp != null) {
outp = null;
}
}
}