java中使用MD5对密码进行加密

import org.springframework.security.authentication.encoding.MessageDigestPasswordEncoder;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;

import com.ec.gen.base.model.ManagementUser;

/**
* 当前登录用户信息
*
* @author liuyanmin
* @date 2014-4-3 上午9:40:51
*/
public class UserContextUtils {

private static MessageDigestPasswordEncoder passEncoder = new MessageDigestPasswordEncoder("MD5");

/**
* 取得当前的登录用户(管理平台)
*
* @return
* @author liuyanmin
* @date 2015-1-17 上午9:41:20
*/
public static ManagementUser getManagementLoginUser(){
ManagementUser user = null ;
try{
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
Object principal = authentication.getPrincipal();
if(principal instanceof ManagementUser){
user = (ManagementUser)principal;
}
}catch(Exception e){
user = null ;
}
if(user == null ){
user = new ManagementUser();
user.setId("AUTO") ;

}
return user ;
}

/**
* 返回加密的密码
*
* @param password  需要加密的密码
* @param salt      salt，--使用用户名
* @return
* @author liuyanmin
* @date 2015-1-17 上午9:45:20
*/
public static String encodePassword(String password,Object salt){
return passEncoder.encodePassword(password, salt);
}

public static void main(String[] args) {
System.out.println(encodePassword("admin","admin"));
System.out.println(encodePassword("liuyanmin", "123456"));
}

}