java 下载文件，兼容Firefox 36.0.1/IE8/Chrome 40.0.2214.93 m/360 7.1.1.322等浏览器

    public void download(HttpServletRequest request, HttpServletResponse response) throws Exception {
            request.setCharacterEncoding("UTF-8");
            String filePath = request.getParameter("filePath");
            String fileName = request.getParameter("fileName");
            if (StringUtils.isNotBlank(fileName)) {
                response.setContentType("application/force-download");// 应用程序强制下载
            String userAgent = request.getHeader("User-Agent");
            byte[] bytes = userAgent.contains("MSIE") ? fileName.getBytes() : fileName.getBytes("UTF-8");
            fileName = new String(bytes, "ISO-8859-1");
            response.setHeader("Content-Disposition", String.format("attachment; filename="%s"", fileName));
            }
        download(filePath, response.getOutputStream());
    }