servlet 火狐 下载 文件名乱码

String agent = (String)request().getHeader("USER-AGENT");      
if(agent != null && agent.indexOf("MSIE") == -1) {// FF           
String enableFileName = "=?UTF-8?B?" + (new String(Base64.encodeBase64(fileName.getBytes("UTF-8")))) + "?=";         
response().setHeader("Content-Disposition", "attachment; filename=" + enableFileName);     
} else { // IE           
String enableFileName = new String(fileName.getBytes("GBK"), "ISO-8859-1");         
response().setHeader("Content-Disposition", "attachment; filename=" + enableFileName);     } 

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/shixing_11/archive/2010/09/02/5858902.aspx

 关于struts2的处理方式见http://wzwd111.iteye.com/blog/1073864