文件导出乱码问题

String filename = "中文.csv";
String agent = request.getHeader("User-Agent").toUpperCase();
if(agent.indexOf("MSIE")>=0 || agent.indexOf("TRIDENT")>=0){
	filename = URLEncoder.encode(filename, "UTF-8");
}else{
	filename = new String(filename.getBytes(), "ISO8859-1");
}