md5

最新推荐文章于 2026-01-01 15:39:09 发布

转载最新推荐文章于 2026-01-01 15:39:09 发布 · 81 阅读

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原文链接：https://my.oschina.net/nly/blog/288290

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#java

package md5;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Snippet {
/**
      * MD5 加密
      */
     private static String getMD5Str(String str) {
         MessageDigest messageDigest = null;

         try {
             messageDigest = MessageDigest.getInstance("MD5");

             messageDigest.reset();

             messageDigest.update(str.getBytes("UTF-8"));
         } catch (NoSuchAlgorithmException e) {
             System.out.println("NoSuchAlgorithmException caught!");
             System.exit(-1);
         } catch (UnsupportedEncodingException e) {
             e.printStackTrace();
         }

         byte[] byteArray = messageDigest.digest();

         StringBuffer md5StrBuff = new StringBuffer();

         for (int i = 0; i < byteArray.length; i++) {
             if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)
                 md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
             else
                 md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
         }

         return md5StrBuff.toString();
     }
     public static void main(String[] args) {
     String str="nly";
     String strmd5=getMD5Str(str);
     System.out.println(strmd5);
  }
}