java 上传文件

import org.apache.commons.io.FileUtils;

@Controller
public class AccountController extends BaseAction{

    @RequestMapping("/add")
    public String add(@RequestParam("upFile") MultipartFile file, HttpServletRequest request) throws Exception {
        String filename = file.getOriginalFilename();
        System.out.println(filename);
        
        
        ServletContext sc = request.getSession().getServletContext();
        String dir = sc.getRealPath("/upload/");
        String uploadImagePath = System.currentTimeMillis() + "-" + filename;
　　　　//上传
        FileUtils.writeByteArrayToFile(new File(dir,uploadImagePath), file.getBytes());
        
        return "redirect:/list";
    }
}