将字符串转换成md5加密

package com.md5;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class StringMD5 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
MessageDigest md = MessageDigest.getInstance("MD5");
String str = "123456";
String result = MD5(str,md);
System.out.println("result-->"+result);
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static String MD5(String strSrc,MessageDigest  md) {
byte[] bt = strSrc.getBytes();
md.update(bt);
String strDes = bytes2Hex(md.digest()); // to HexString
return strDes;
}
private static String bytes2Hex(byte[] bts) {
StringBuffer des = new StringBuffer();
String tmp = null;
for (int i = 0; i < bts.length; i++) {
tmp = (Integer.toHexString(bts[i] & 0xFF));
if (tmp.length() == 1) {
des.append("0");
}
des.append(tmp);
}
return des.toString();
}
}