Java web Md5加密

直接上代码

package com.mobileserver.domain;

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

import sun.misc.BASE64Encoder;

public class Md5 {
     /**利用MD5进行加密*/
    public String EncoderByMd5(String str) throws NoSuchAlgorithmException, UnsupportedEncodingException{
        //确定计算方法
        MessageDigest md5=MessageDigest.getInstance("MD5");
        BASE64Encoder base64en = new BASE64Encoder();
        //加密后的字符串
        String newstr=base64en.encode(md5.digest(str.getBytes("utf-8")));
        return newstr;
    }
    
    /**判断用户密码是否正确
     *newpasswd  用户输入的密码
     *oldpasswd  正确密码*/
    public boolean checkpassword(String newpasswd,String oldpasswd) throws NoSuchAlgorithmException, UnsupportedEncodingException{
        if(EncoderByMd5(newpasswd).equals(oldpasswd))
            return true;
        else
            return false;
    }
}

　　2、进行类调用

String userName = URLDecoder.decode(request.getParameter("userName"),"UTF-8");
		String password = URLDecoder.decode(request.getParameter("password"),"UTF-8");
		System.out.println("获取到用户名："+userName+"密码"+password);
		//密码Md5加密
        Md5 md5 = new Md5();    
        String str = password;
        try {
            String newString = md5.EncoderByMd5(str);
            System.out.println(newString);
        } catch (Exception e) {
            // TODO Auto-generated catch block      
        }       
        try {
			System.out.println(md5.EncoderByMd5(password).equals("HzhwvidPbEmz4xoMZyiVfw=="));
		} catch (NoSuchAlgorithmException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}

　此时控制台可以看到效果