/**     * 文件下载     *      * @param id     * @param basePath     * @param response     * @throws Exception     */        @RequestMapping(value = "/file_download", method = { RequestMethod.POST,RequestMethod.GET })    public void downloadCommon(String id, HttpServletRequest request, HttpServletResponse response)            throws Exception {                //调用ServletOutputStream或者Writer之前有效。        //当使用的缓存已满时，容器必须立刻刷新把缓存的内容发送到客户端，如果这是第一个被发送到客户端的数据，那么response也会被认为是已提交        response.reset();        response.setHeader("Content-Type", "application/force-download");                String encode = request.getParameter("encode");        if (encode != null && !"".equals(encode)) {            try {                request.setCharacterEncoding(ENCODING);            } catch (UnsupportedEncodingException e) {                request.setCharacterEncoding(ENCODING);            }        } else {            request.setCharacterEncoding(ENCODING);        }                String path = null;        String fileName=null;        String saveFileName=null;                InputStream input =null;        OutputStream output = null;                try {                        // 构建流            input = new FileInputStream(path + File.separator + fileName);            output =response.getOutputStream();      
            if(request.getHeader("user-agent").indexOf("MSIE") != -1 || request.getHeader("user-agent").indexOf("like Gecko")!=-1) {                saveFileName = java.net.URLEncoder.encode(saveFileName,ENCODING);            } else {                saveFileName = new String(saveFileName.getBytes(ENCODING),"iso-8859-1");               }            //在response被提交前,头信息必须被设置，否则无效            //Content-Disposition 设置文件名，文件名有空格时下载文件名错误的解决办法 \fileName\            response.setHeader("Content-disposition", "inline;filename=\"" +saveFileName+"\"");                       // 输出文件流            byte[] buffer = new byte[1024];            int i = 0;            while ((i = input.read(buffer)) != -1) {                output.write(buffer, 0, i);            }                    } catch (Exception e) {                        //TODO        } finally {            try {                if(null !=output) {                    output.flush();                    output.close();                }                if(null !=input) {                    input.close();                }            } catch (Exception e) {            }        }    }