md5对文件的校验

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最新推荐文章于 2025-04-23 20:29:15 发布

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文章标签： md5

本文链接：https://blog.youkuaiyun.com/small44444/article/details/107718747

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本文介绍了如何在Java中使用XzDigestUtils工具类进行MD5文件校验，通过简单的方法调用即可完成文件的MD5哈希值计算，方便进行文件一致性验证。

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package com.wc.utils;

import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;

public class XzDigestUtils {
private static final String CHAR_SET = “UTF-8”;
private static final char[] DIGITS_LOWER = new char[]{‘0’, ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, ‘9’, ‘a’, ‘b’, ‘c’, ‘d’, ‘e’, ‘f’};
private static final char[] DIGITS_UPPER = new char[]{‘0’, ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, ‘9’, ‘A’, ‘B’, ‘C’, ‘D’, ‘E’, ‘F’};

private static byte[] digest(MessageDigest messageDigest, InputStream inputStream) throws IOException {
    return updateDigest(messageDigest, inputStream).digest();
}

public static MessageDigest getDigest(String str) {
    try {
        return MessageDigest.getInstance(str);
    } catch (Throwable e) {
        throw new IllegalArgumentException(e);
    }
}

public static MessageDigest getMd5Digest(