java简单图片上传

ssm普通项目

//上传图片
			    String name = UUID.randomUUID().toString();
		        String newFileName = name + ".jpg";
		        File newFile = new File(request.getServletContext().getRealPath("/image"), newFileName);
		        newFile.getParentFile().mkdirs();
		        file.transferTo(newFile);

springboot项目

public final static String FILE_UPLOAD_DIC = "D:\\upload\\";

  @PostMapping({"/upload/file"})
    @ResponseBody
    public Result upload(HttpServletRequest httpServletRequest, @RequestParam("file") MultipartFile file) throws URISyntaxException {
        String fileName = file.getOriginalFilename();
        String suffixName = fileName.substring(fileName.lastIndexOf("."));
        //生成文件名称通用方法
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss");
        Random r = new Random();
        StringBuilder tempName = new StringBuilder();
        tempName.append(sdf.format(new Date())).append(r.nextInt(100)).append(suffixName);
        String newFileName = tempName.toString();
        File fileDirectory = new File(Constants.FILE_UPLOAD_DIC);
        //创建文件
        File destFile = new File(Constants.FILE_UPLOAD_DIC + newFileName);
        try {
            if (!fileDirectory.exists()) {
                if (!fileDirectory.mkdir()) {
                    throw new IOException("文件夹创建失败,路径为：" + fileDirectory);
                }
            }

            file.transferTo(destFile);
            Result resultSuccess = ResultGenerator.genSuccessResult();
            resultSuccess.setData(NewBeeMallUtils.getHost(new URI(httpServletRequest.getRequestURL() + "")) + "/upload/" + newFileName);
            return resultSuccess;
        } catch (IOException e) {
            e.printStackTrace();
            return ResultGenerator.genFailResult("文件上传失败");
        }
    }

@Configuration
public class NeeShopMallWebMvcConfigurer implements WebMvcConfigurer {

    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/upload/**").addResourceLocations("file:" + Constants.FILE_UPLOAD_DIC);
    }
}