package cn.com.lzt.message.send.util;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

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

public class MD5 {
	private static final Log log = LogFactory.getLog(MD5.class);
	
	/**
	 * MD5 加密算法
	 */
	public static String md5(String srcString) {
		MessageDigest messageDigest = null;
		try	{
			messageDigest = MessageDigest.getInstance("MD5");
			messageDigest.reset();
			messageDigest.update(srcString.getBytes("UTF-8"));
		} catch (NoSuchAlgorithmException e) {
			log.error("get md5 str error!");
		} catch (UnsupportedEncodingException e) {
			log.error("unsupported encoding exception!!!");
		}
		
		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) {
	}
}