MD5加密方式-工具类

 

 
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
 
import java.security.MessageDigest;
 
/**
 * Md5加密方法
 * 
 * @author 
 */
public class Md5Utils
{
    private static final Logger log = LoggerFactory.getLogger(Md5Utils.class);
 
    private static byte[] md5(String s)
    {
        MessageDigest algorithm;
        try
        {
            algorithm = MessageDigest.getInstance("MD5");
            algorithm.reset();
            algorithm.update(s.getBytes("UTF-8"));
            byte[] messageDigest = algorithm.digest();
            return messageDigest;
        }
        catch (Exception e)
        {
            log.error("MD5 Error...", e);
        }
        return null;
    }
 
    private static final String toHex(byte hash[])
    {
        if (hash == null)
        {
            return null;
        }
        StringBuffer buf = new StringBuffer(hash.length * 2);
        int i;
 
        for (i = 0; i < hash.length; i++)
        {
            if ((hash[i] & 0xff) < 0x10)
            {
                buf.append("0");
            }
            buf.append(Long.toString(hash[i] & 0xff, 16));
        }
        return buf.toString();
    }
 
    public static String hash(String s)
    {
        try
        {
            return new String(toHex(md5(s)).getBytes("UTF-8"), "UTF-8");
        }
        catch (Exception e)
        {
            log.error("not supported charset...{}", e);
            return s;
        }
    }
 
    public static void main(String[] args) {
        String str = "{\"test\":\"001\"}";
        String s = hash(str);
        System.out.println(s);
    }
}

 

转载：https://blog.csdn.net/yao583224426/article/details/121704186

 

posted @ 2022-01-20 11:00  迷走神经  阅读(100)  评论(0)  编辑  收藏  举报