md5加密utils

package cn.itcast.bos.utils;

import java.math.BigInteger;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class MD5Utils {

/**

* 使用md5的算法进行加密

public static String md5(String plainText) {

byte[] secretBytes = null;

try {

secretBytes = MessageDigest.getInstance("md5").digest(

plainText.getBytes());

} catch (NoSuchAlgorithmException e) {

throw new RuntimeException("没有md5这个算法！");

}

String md5code = new BigInteger(1, secretBytes).toString(16);// 16进制数字

// 如果生成数字未满32位，需要前面补0

for (int i = 0; i < 32 - md5code.length(); i++) {

md5code = "0" + md5code;

}

return md5code;

}

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