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ÔÚ Linux ÖÐʹÓàmd5sum ÏÂÁ

echo -n "Hello, World!" | md5sum

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ÔÚ Java ÖÐʹÓà MessageDigest ÅÌËã MD5 É¢ÁÐÖµ£º

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5Example {
    public static void main(String[] args) throws NoSuchAlgorithmException {
        String input = "Hello, World!";
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] hash = md.digest(input.getBytes(StandardCharsets.UTF_8));
        StringBuilder hexString = new StringBuilder();
        for (byte b : hash) {
            String hex = Integer.toHexString(0xFF & b);
            if (hex.length() == 1) {
                hexString.append('0');
            }
            hexString.append(hex);
        }
        System.out.println(hexString.toString());
    }
}

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