Spring Boot——获取上传文件的MD5值解决方案

朴灿烈づ我的快乐病毒、 2022-10-31 04:29 463阅读 0赞

# 解决方案  #

方法一：

/**
         * 上传文件
         * @param file 文件
         * @return ResponseBean
         */
        @ApiOperation(value = "上传文件",notes = "上传文件")
        @ApiImplicitParams({
                @ApiImplicitParam(name = "file", paramType="form", value = "临时文件", dataType="file", required = true, dataTypeClass = MultipartFile.class),
        })
        @RequestMapping(value = "/upload", method = {RequestMethod.POST}, headers = "content-type=multipart/form-data")
        public ResponseBean upload(@ApiParam(value="文件",required=true)
                                   @RequestPart("file") MultipartFile file){
            String md5 = org.springframework.util.DigestUtils.md5DigestAsHex(file.getInputStream());
            log.debug("MD5:" + md5);
            return ResponseBean.success(md5);
        }

方法二：

/**
    	 * 获取上传文件的md5
    	 * 
    	 * @param file
    	 * @return
    	 * @throws NoSuchAlgorithmException
    	 * @throws IOException
    	 */
    	public String getMd5(MultipartFile file) {
     
    		try {
    			byte[] uploadBytes = file.getBytes();
    			MessageDigest md5 = MessageDigest.getInstance("MD5");
    			byte[] digest = md5.digest(uploadBytes);
    			String hashString = new BigInteger(1, digest).toString(16);
    			return hashString;
    		} catch (Exception e) {
    			
    		}
    		return null;
     
    	}

# 参考文章 #

[SpringBoot 文件上传 基于MD5 文件内容校验工具类][SpringBoot _ _MD5]

[java 获取上传文件的MD5值][java _MD5]

[SpringBoot定时器+文件Md5码实现文件变动检测][SpringBoot_Md5]

[\[SpringBoot\]获取上传文件的MD5值][SpringBoot_MD5]

[JAVA中获取文件MD5值的四种方法][JAVA_MD5]

[SpringBoot _ _MD5]: https://blog.csdn.net/zhouzhiwengang/article/details/102453958
[java _MD5]: https://blog.csdn.net/u013123030/article/details/84823066
[SpringBoot_Md5]: https://blog.csdn.net/Appleyk/article/details/102880949
[SpringBoot_MD5]: https://www.jianshu.com/p/8ac5f742baa5
[JAVA_MD5]: http://xn--javamd5-j43kl2di7ew3ngnj6w3cguae76fgn9asxl8o7b