工具类-MD5Utils

package com.yqq.utils;

import java.security.MessageDigest;

/**
* MD5加密工具
*/
public class MD5Utils {
  
  public static String digest(String source){
     try{
        MessageDigest digest = MessageDigest.getInstance("MD5");
        
        byte[] temp = digest.digest(source.getBytes());
        
        StringBuilder builder = new StringBuilder("");
        
        for(byte b : temp){
           String s = Integer.toHexString(0xFF & b);
           if(s.length() == 1){
              s = "0" + s;
           }
           builder.append(s);
        }
        
        return builder.toString();
     }catch(Exception e){
        return null;
     }
  }

}