Java中对字符串进行md5加密

最新推荐文章于 2024-01-28 20:11:42 发布

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最新推荐文章于 2024-01-28 20:11:42 发布

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import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Md5Util {

   public static String getMd5(String data)
   {
       String result = null;

       byte [] buf = data.getBytes();
   MessageDigest md5;

       try {
           md5 = MessageDigest.getInstance("MD5");
           md5.update(buf);

       byte [] tmp = md5.digest();

       StringBuilder sb = new StringBuilder();
       for (byte b:tmp)
       {

       if (Integer.toHexString(0xFF & b).length() == 1)
       sb.append("0").append(Integer.toHexString(0xFF & b));
       else
       sb.append(Integer.toHexString(0xFF & b));
       }

   //   System.out.println(sb);
       result = sb.toString();

       } catch (NoSuchAlgorithmException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }

       return result;
   }