你是否想要拥有一个自己的网站？那么现在来了，直接上这代码。

首先需要先找到一些图片，你的男朋友或者女朋友的图片放在一个文件夹，这里小编用Python爬取了一些网上图片，不做过多介绍

先看我的设置思路

 我的项目结构如下

 后端代码可以展示给你们，如果想要完整代码，请Q1，我会共享，或者访问百度网盘

链接：https://pan.baidu.com/s/160hHJWwSyxtL4oWzO6i1Uw 
提取码：oiz0

修改密码的后端代码

alterPasswordServlet.Java

package com.wxsc.controller;import com.wxsc.dao.userDao;
import com.wxsc.dao.userDaoLmpl;
import com.wxsc.pojo.User;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;/*** @author 张宗臣* @version 1.0* 修改密码后台,* @date 2021/11/22 0022 18:14*/
@WebServlet("/alter")
public class alterPasswordServlet  extends HttpServlet {@Overrideprotected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {//设置编码req.setCharacterEncoding("utf-8");resp.setContentType("text/html;charset=utf-8");
//        获取String username = req.getParameter("username");String pwd = req.getParameter("password");//daoUser u = new User(0,username,pwd);userDao userDao = new userDaoLmpl();boolean flag = userDao.alterPassword(u);PrintWriter pw = resp.getWriter();if(flag){pw.println("恭喜"+username+"先生/女士，您的密码完成修改");pw.println("<a href=\"MyServlet.html\">返回登录</a>");}else{pw.println("很抱歉"+username+"先生/女士，您的密码修改失败");}}
}

登录后端代码：LoginServlet.java

package com.wxsc.controller;import com.wxsc.dao.userDao;
import com.wxsc.dao.userDaoLmpl;
import com.wxsc.pojo.User;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;/*** @author 张宗臣* 登录后台服务器* @version 1.0* @date 2021/11/19 0019 18:24*/
@WebServlet("/login")
public class LoginServlet extends HttpServlet {@Overrideprotected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//        设置编码格式resp.setContentType("text/html;charset=utf-8");req.setCharacterEncoding("utf-8");
//        获取参数String username = req.getParameter("username");String pwd1 = req.getParameter("password");
//        3.daouserDao userDao = new userDaoLmpl();User u = userDao.Login(username,pwd1);if (u!=null){// 绑定会话HttpSession session = req.getSession();session.setAttribute("u",u);//            登录成功，跳转欢迎界面resp.sendRedirect("index.html");}else{resp.sendRedirect("MyServlet.html");}}
}

注册后端代码 RegistServlet.java

package com.wxsc.controller;import com.wxsc.dao.userDao;
import com.wxsc.dao.userDaoLmpl;
import com.wxsc.pojo.User;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;/*** @author 张宗臣* @version 1.0* @date 2021/11/20 0020 17:44* 注册页面*/
@WebServlet("/reg")
public class RegistServlet extends HttpServlet {@Overrideprotected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {//1.设置编码req.setCharacterEncoding("utf-8");resp.setContentType("text/html;charset=utf-8");//获取参数String username = req.getParameter("username");String pwd = req.getParameter("password");//访问数据库JDBCuserDao userDao = new userDaoLmpl();// 张三不可以可以使用User u = new User(0,username,pwd);boolean flag = userDao.save(u);if(flag){//跳转登录页面resp.sendRedirect("MyServlet.html");}else{//重新跳转注册页面resp.sendRedirect("Reg.html");}}
}

最后感谢大家的访问，如有不懂请联系qq:3265857641或者微信Q3265857641小编第一时间给你解答