java 文件下载 解决中文问题

@RequestMapping(value="/download")

public @ResponseBody String download(HttpServletResponse response,HttpServletRequest request,@Param(value="filePath") String filePath,@Param(value="")String id ) {

try {

NjWorkLog njWorkLog= njWorkLogService.findOneById(id);

// path是指欲下载的文件的路径。

File file = new File(request.getRealPath(filePath));

// 取得文件名。

//String filename = file.getName();

// 取得文件的后缀名。

// String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();

// 以流的形式下载文件。

InputStream fis = new BufferedInputStream(new FileInputStream(file.getPath()));

byte[] buffer = new byte[fis.available()];

fis.read(buffer);

fis.close();

// 清空response

response.reset();

// 设置response的Header

String filename=njWorkLog.getStrFileName();

if (request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") > 0)

filename = URLEncoder.encode(filename, "UTF-8");//IE浏览器

if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0)

filename = new String(filename.getBytes("UTF-8"), "ISO8859-1");//firefox浏览器

response.addHeader("content-type","application/octet-stream");

response.addHeader("Content-Disposition","attachment;filename="+filename);

OutputStream toClient = new BufferedOutputStream(response.getOutputStream());

response.setContentType("application/octet-stream");

toClient.write(buffer);

toClient.flush();

toClient.close();

} catch (Exception ex) {

ex.printStackTrace();

}

return "";

}