Servlet download 如何为已知的 MIME 类型激活“文件下载”对话框?

根据微软的一个文章：http://support.microsoft.com/kb/q260519/
参考如下:
您可以使用 Content-disposition 头来覆盖此默认行为。其格式是：

Content-disposition: attachment; filename=fname.ext
ASP:代码

Response.AddHeader "content-disposition","attachment; filename=fname.ext"

Servlet代码:
realName="yourfiel.n";
response.addHeader("Content-disposition","attachment; filename="+realName);
//realName如果是汉字编码会造成出现不了制定的文件名的情况，需要编码
//把以上代码修改为
//response.addHeader("Content-disposition","attachment; filename="+java.net.URLEncoder.encode(realName,"UTF-8"));        

response.setIntHeader("Content-length", (int)rs.getBlob("ATTACH_FILE").length());

     InputStream is  = rs.getBinaryStream("ATTACH_FILE");
    
      byte[] buf = new byte[3000];
      int read = 0;
      while ((read = is.read(buf)) > 0)
      {
//            fos.write(buf, 0, read);
          outs.write(buf, 0, read);
      }
//        fos.close();
      is.close();
      outs.flush();
//        outs.close();
  }