下载文件

来源：互联网发布：蚂蜂窝app显示网络出走编辑：程序博客网时间：2024/04/30 11:25

// 得到文件名字和路径

String fileName = (String)request.getAttribute("fileName");
String filepath = (String)request.getAttribute("urlpath")+"//"+ fileName;

// 设置响应头和下载保存的文件名
response.setContentType("APPLICATION/OCTET-STREAM");
//response.setContentType("text/html; charset=utf-8");
response.setHeader("Content-Disposition","attachment; filename=/""+fileName+ "/"");
//response.setHeader("Content-Disposition","attachment; filename=读文件.txt");
    int n = 0;
java.io.FileInputStream fis = null;
    java.io.PrintWriter oo=null;
try
{
  fis = new java.io.FileInputStream(filepath);
  oo =new java.io.PrintWriter(response.getWriter());
  while ((n=fis.read())!=-1)
  {
   oo.write(n);
  }
}
catch (Exception e)
{
    e.printStackTrace() ;
}
   finally
   {
if (!(fis==null))
{
    oo.close();
    oo = null;
    fis.close();
    fis = null;
}
System.gc();
   }