com.ms.tools.components.cloud.qiniu.utils.UploadFileUtils Maven / Gradle / Ivy
/*
* @MS 2022-12-13
* Copyright (c) 2001-2023 萌森
* 保留所有权利
* 本软件为萌森工作室所有及包含机密信息，须遵守其相关许可证条款进行使用。
* Copyright (c) 2001-2023 Meng Sen
* All rights reserved
* This software is owned by Mengsen Studio and contains confidential information, and must be used in accordance with its relevant license terms.
* Website：https://qyg2297248353.top
*/
package com.ms.tools.components.cloud.qiniu.utils;
import com.qiniu.util.Hex;
import org.springframework.web.multipart.MultipartFile;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* @author ms
*/
public class UploadFileUtils {
/**
* 获取文件的sha256
*
* @param file 文件
* @return sha256
* @throws IOException io异常
* @throws NoSuchAlgorithmException 算法异常
*/
public static String getSha256(MultipartFile file) throws IOException, NoSuchAlgorithmException {
MessageDigest digest = MessageDigest.getInstance("SHA-256");
BufferedInputStream bis = new BufferedInputStream(file.getInputStream());
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = bis.read(buffer)) != -1) {
digest.update(buffer, 0, bytesRead);
}
byte[] hash = digest.digest();
return Hex.encodeHexString(hash);
}
}