struts2 上载 文件名 乱码

struts2 下载 文件名 乱码

import org.apache.commons.codec.binary.Base64;

	public String fileNameFixer(String fileName){
		String agent = (String)request.getHeader("USER-AGENT"); 
		String enableFileName = "";
		try{
			if(agent != null && agent.indexOf("MSIE") == -1) {// FF   
				enableFileName = "=?UTF-8?B?" + (new String(Base64.encodeBase64(fileName.getBytes("UTF-8")))) + "?=";
			}else {
				enableFileName = new String(fileName.getBytes("GBK"), "ISO-8859-1");
			}
		}catch(UnsupportedEncodingException e){
			System.out.println("不支持的编码方式");
			e.printStackTrace();
		}  
		return enableFileName;
	}

  关于servlet的处理方式，请见http://wzwd111.iteye.com/blog/1073796