不同浏览器下文件下载，文件名编码问题

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/** * deal with the fileName encode in the different browsers * @param request * @param fileName * @return * @throws UnsupportedEncodingException */private String encodeFileName(HttpServletRequest request, String fileName)throws UnsupportedEncodingException {String agent = request.getHeader("USER-AGENT");if (null != agent && -1 != agent.indexOf("MSIE")) {return URLEncoder.encode(fileName, "UTF8").replace("+","%20");} else if (null != agent && -1 != agent.indexOf("Mozilla")) {return "=?UTF-8?B?"+ (new String(Base64.encodeBase64(fileName.getBytes("UTF-8")))) + "?=";} else {return fileName;}}

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