添加用户功能

AddServlet

package Servlet;

import Bean.User;
import Dao.UserDao;

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.xml.crypto.Data;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

@WebServlet("/AddServlet")
public class AddServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=utf-8");
        request.setCharacterEncoding("utf-8");
        PrintWriter out=response.getWriter();
        //获取参数值
        String name=request.getParameter("username");
        String password=request.getParameter("password");
        String email=request.getParameter("email");
        String birthday=request.getParameter("birthday");
        //数据封装成User-----bean对象
        User user=new User();
        user.setName(name);
        user.setPassword(password);
        user.setEmail(email);
        SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");
        Date d= null;
        try{
            d=format.parse(birthday);
        }catch (ParseException e){
            e.printStackTrace();
        }
        user.setBirthday(d);//需要将String类型的birthday转换成Date
        //添加进数据库
        boolean f=new UserDao().insert(user);
        if (f){
            out.print("添加成功！");
        }else{
            out.print("添加失败！");
        }
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
}

add.jsp

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2021/4/22
  Time: 8:43
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="/AddServlet" method="post">
    用户名：<input type="text" name="username"><br>
    密码：<input type="password" name="password"><br>
    邮箱：<input type="text" name="email"><br>
    出生日期：<input type="date" name="birthday"><br>
    <input type="submit" value="提交">
</form>
</body>
</html>