@Controller
public class FileUploadController {

	@RequestMapping("/fileUpload")
	public String handleFormUpload(@RequestParam("name") String name,
			@RequestParam("uploadfile") List<MultipartFile> uploadfile, HttpServletRequest request) {
		//
		if(!uploadfile.isEmpty() && uploadfile.size()>0 ) {
			//循环输出上传文件
			for (MultipartFile file: uploadfile) {
				//获取原始名称
				String originalFiename = file.getOriginalFilename();
				String dirPath = request.getServletContext().getRealPath("/upload/");
				File filePath = new File(dirPath);
				if(!filePath.exists()) {
					filePath.mkdir();
				}
				//使用uuid重新命名
				String newFilename = name + "_" + UUID.randomUUID() + "_" + originalFiename;
				//使用multipartFile接口方法上传
				try {
					System.out.println(dirPath);
					file.transferTo(new File(dirPath +"/" + newFilename));
					System.out.println(dirPath + newFilename);
				} catch (Exception e) {
					e.printStackTrace();
					return "error";
				}
			}
			return "success";
		}else {
			return "error";
		}
	}
}

@Controller
public class UserController {

	@RequestMapping("/testJson")
	@ResponseBody
	public User testJson(@RequestBody User user) {
		System.out.println(user);
		return user;
	}
	
	@RequestMapping("/toIndex")
	public String toIndex() {
		return "index";
	}
}