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  • MD5加密

    package utils;
    import java.io.UnsupportedEncodingException;
    import java.security.MessageDigest;
    import java.security.NoSuchAlgorithmException;
    public class MD5Util {
     
     public static void main(String[] args) {
     }
     /**
         * MD5 加密
         */
        public 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();
        }
    }
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  • 原文地址:https://www.cnblogs.com/lbbk/p/11275266.html
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