java上传图片格式限制_限制上传图片大小 格式为jpg 或者 png

在Constants.java中：

public static HashMap getPhotoTypeMap() {

HashMap resultMap = new HashMap();

resultMap.put("jpg", "");

resultMap.put("png", "");

return resultMap;

}

@RequestMapping(value = "/uploadAvatarImage", method = RequestMethod.POST)

public String uploadAvatarImage(Model uiModel, @RequestParam("avatarImageFile") MultipartFile file) {

String originalFileName=file.getOriginalFilename();

if (!"".equals(file.getOriginalFilename()) && file.getSize() <= Constants.SYSTEM_IMAGE_MAX_SIZE) {

String type=originalFileName.substring(originalFileName.lastIndexOf(".")+1);

if (!Constants.getPhotoTypeMap().containsKey(type.toLowerCase())) {

uiModel.addAttribute("validateMessage", "The f