MyBatis详细代码来啦！
家人们，改代码改到现在真的绝了，终于是改出来了，但是对于某些判断性的小问题还没写，细节性满满的增删改查终于实现啦！
目录结构
各个文件的代码：
//SqlSessionFactoryUtils.java
package org.example.Utils;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import java.io.IOException;
import java.io.InputStream;
public class SqlSessionFactoryUtils {
private static SqlSessionFactory sqlSessionFactory;
static{
String resource = "mybatis-config.xml";
InputStream inputStream = null;
try {
inputStream = Resources.getResourceAsStream(resource);
} catch (IOException e) {
e.printStackTrace();
}
sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
}
public static SqlSessionFactory getSqlSessionFactory(){
return sqlSessionFactory;
}
}
//User.java
package org.example.Bean;
public class User {
private String hu;
private String lei;
private String mian;
private String shu;
private String name;
private String shen;
private String xing;
private String zu;
private String edu;
public void setHu(String hu){
this.hu=hu;
}
public String getHu(){
return hu;
}
public void setLei(String lei){
this.lei=lei;
}
public String getLei(){
return lei;
}
public void setMian(String mian){
this.mian=mian;
}
public String getMian(){
return mian;
}
public void setShu(String shu){
this.shu=shu;
}
public String getShu(){
return shu;
}
public void setName(String name){
this.name=name;
}
public String getName(){
return name;
}
public void setShen(String shen){
this.shen=shen;
}
public String getShen(){
return shen;
}
public void setXing(String xing){
this.xing=xing;
}
public String getXing(){
return xing;
}
public void setZu(String zu){
this.zu=zu;
}
public String getZu(){
return zu;
}
public void setEdu(String edu){
this.edu=edu;
}
public String getEdu(){
return edu;
}
public User(){super();}
public User(String hu,String lei,String mian,String shu,String name,String shen,String xing,String zu,String edu){
this.hu=hu;
this.lei=lei;
this.mian=mian;
this.shu=shu;
this.name=name;
this.shen=shen;
this.xing=xing;
this.zu=zu;
this.edu=edu;
}
}
//UserMapper.java(接口)
package org.example.mapper;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import org.example.Bean.User;
import java.util.List;
public interface UserMapper {
//查询所有
@Select("select * from ppp")
List<User> selectAll();
//添加信息
@Insert("insert into ppp")
void add(User user);
//修改信息
@Select("select * from ppp where name=#{name}")
User selectByOne(String name);
@Update("update ppp set hu=#{hu},lei=#{lei},mian=#{mian},shu=#{shu},shen=#{shen},xing=#{xing},zu=#{zu},edu=#{edu} where name=#{name}")
void update(User user);
//删除信息
@Select("select * from ppp where name=#{name}")
User selectByTwo(String name);
@Delete("delete from ppp where name=#{name}")
void delete(String name);
//根据name查询信息
@Select("select * from ppp where name=#{name}")
List<User> selectByName(String name);
}
//UserService.java
package org.example.Service;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.example.Bean.User;
import org.example.Utils.SqlSessionFactoryUtils;
import org.example.mapper.UserMapper;
import java.util.List;
public class UserService {
//调用UserMapper方法
//查询所有
public List<User> selectAll(){
SqlSessionFactory sqlSessionFactory= SqlSessionFactoryUtils.getSqlSessionFactory();
SqlSession sqlSession=sqlSessionFactory.openSession();
UserMapper userMapper=sqlSession.getMapper(UserMapper.class);
List<User> list=userMapper.selectAll();
sqlSession.close();
return list;
}
//添加信息
public void add(User user){
SqlSessionFactory sqlSessionFactory= SqlSessionFactoryUtils.getSqlSessionFactory();
SqlSession sqlSession=sqlSessionFactory.openSession();
UserMapper userMapper=sqlSession.getMapper(UserMapper.class);
userMapper.add(user);
sqlSession.commit();
sqlSession.close();
}
//修改信息
public User selectByOne(String name){
SqlSessionFactory sqlSessionFactory= SqlSessionFactoryUtils.getSqlSessionFactory();
SqlSession sqlSession=sqlSessionFactory.openSession();
UserMapper userMapper=sqlSession.getMapper(UserMapper.class);
User user=userMapper.selectByOne(name);
sqlSession.close();
return user;
}
public void update(User user){
SqlSessionFactory sqlSessionFactory= SqlSessionFactoryUtils.getSqlSessionFactory();
SqlSession sqlSession=sqlSessionFactory.openSession();
UserMapper userMapper=sqlSession.getMapper(UserMapper.class);
userMapper.update(user);
sqlSession.commit();
sqlSession.close();
}
//删除信息
public User selectByTwo(String name){
SqlSessionFactory sqlSessionFactory= SqlSessionFactoryUtils.getSqlSessionFactory();
SqlSession sqlSession=sqlSessionFactory.openSession();
UserMapper userMapper=sqlSession.getMapper(UserMapper.class);
User user=userMapper.selectByTwo(name);
sqlSession.close();
return user;
}
public void delete(String name){
SqlSessionFactory sqlSessionFactory= SqlSessionFactoryUtils.getSqlSessionFactory();
SqlSession sqlSession=sqlSessionFactory.openSession();
UserMapper userMapper=sqlSession.getMapper(UserMapper.class);
userMapper.delete(name);
sqlSession.commit();
sqlSession.close();
}
//根据name查询
public List<User> selectByName(String name){
SqlSessionFactory sqlSessionFactory= SqlSessionFactoryUtils.getSqlSessionFactory();
SqlSession sqlSession=sqlSessionFactory.openSession();
UserMapper userMapper=sqlSession.getMapper(UserMapper.class);
List<User> list=userMapper.selectByName(name);
sqlSession.close();
return list;
}
}
//addServlet.java
package org.example.Servlet;
import org.example.Bean.User;
import org.example.Service.UserService;
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;
@WebServlet("/addServlet")
public class addServlet extends HttpServlet {
private UserService us=new UserService();
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
String hu=req.getParameter("hu");
String lei=req.getParameter("lei");
String mian=req.getParameter("mian");
String shu=req.getParameter("shu");
String name=req.getParameter("name");
String shen=req.getParameter("shen");
String xing=req.getParameter("xing");
String zu=req.getParameter("zu");
String edu=req.getParameter("edu");
User user=new User();
user.setHu(hu);
user.setLei(lei);
user.setMian(mian);
user.setShu(shu);
user.setName(name);
user.setShen(shen);
user.setXing(xing);
user.setZu(zu);
user.setEdu(edu);
us.add(user);
req.getRequestDispatcher("aServlet").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//super.doPost(req, resp);
}
}
//updateServlet.java
package org.example.Servlet;
import org.example.Bean.User;
import org.example.Service.UserService;
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;
@WebServlet("/updateServlet")
public class updateServlet extends HttpServlet {
private UserService us=new UserService();
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
String hu=req.getParameter("hu");
String lei=req.getParameter("lei");
String mian=req.getParameter("mian");
String shu=req.getParameter("shu");
String name=req.getParameter("name");
String shen=req.getParameter("shen");
String xing=req.getParameter("xing");
String zu=req.getParameter("zu");
String edu=req.getParameter("edu");
User user=new User();
user.setHu(hu);
user.setLei(lei);
user.setMian(mian);
user.setShu(shu);
user.setName(name);
user.setShen(shen);
user.setXing(xing);
user.setZu(zu);
user.setEdu(edu);
us.update(user);
req.getRequestDispatcher("aServlet").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//super.doPost(req, resp);
}
}
//deleteServlet.java
package org.example.Servlet;
import org.example.Bean.User;
import org.example.Service.UserService;
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;
@WebServlet("/deleteServlet")
public class deleteServlet extends HttpServlet {
private UserService us=new UserService();
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
String name=req.getParameter("name");
us.delete(name);
req.getRequestDispatcher("aServlet").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//super.doPost(req, resp);
}
}
//checkServlet.java
package org.example.Servlet;
import org.example.Bean.User;
import org.example.Service.UserService;
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.util.List;
@WebServlet("/checkServlet")
public class checkServlet extends HttpServlet {
private UserService us=new UserService();
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
String name=req.getParameter("name");
List<User> list=us.selectByName(name);
req.setAttribute("list",list);
req.getRequestDispatcher("check.jsp").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
}
}
//aServlet.java
package org.example.Servlet;
import org.example.Bean.User;
import org.example.Service.UserService;
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.util.List;
@WebServlet("/aServlet")
public class AServlet extends HttpServlet {
private UserService us=new UserService();
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
List<User> list=us.selectAll();
req.setAttribute("list",list);
req.getRequestDispatcher("index.jsp").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
}
}
//selectByOne.java
package org.example.Servlet;
import org.example.Bean.User;
import org.example.Service.UserService;
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;
@WebServlet("/selectByOne")
public class selectByOne extends HttpServlet {
private UserService us=new UserService();
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
String name=req.getParameter("name");
User user=us.selectByOne(name);
req.setAttribute("user",user);
req.getRequestDispatcher("update.jsp").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//super.doPost(req, resp);
}
}
//selectByTwo.java
package org.example.Servlet;
import org.example.Bean.User;
import org.example.Service.UserService;
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;
@WebServlet("/selectByTwo")
public class selectByTwo extends HttpServlet {
private UserService us=new UserService();
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
String name=req.getParameter("name");
User user=us.selectByTwo(name);
req.setAttribute("user",user);
req.getRequestDispatcher("deleteServlet").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//super.doPost(req, resp);
}
}
//add.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>添加界面</title>
</head>
<body>
<center>
<form action="addServlet" method="post">
<tr>
<td>户别：</td>
<td><input type="radio" name="hu" value="家庭户">家庭户</td>
<td><input type="radio" name="hu" value="集体户">集体户</td>
</tr>
<p>
<tr>
<td>住房类型：</td>
<td><input type="radio" name="lei" value="家庭住所">家庭住所</td>
<td><input type="radio" name="lei" value="集体住所">集体住所</td>
<td><input type="radio" name="lei" value="工作地住所">工作地住所</td>
<td><input type="radio" name="lei" value="其他住所">其他住所</td>
<td><input type="radio" name="lei" value="无住所">无住所</td>
</tr>
<p>
<tr>
<td>本户现住房面积：</td>
<td><input type="text" name="mian"></td>
</tr>
<p>
<tr>
<td>本户现住房间数：</td>
<td><input type="text" name="shu"></td>
</tr>
<p>
<tr>
<td>户主姓名：</td>
<td><input type="text" name="name"></td>
</tr>
<p>
<tr>
<td>身份证号码：</td>
<td><input type="text" name="shen"></td>
</tr>
<p>
<tr>
<td>性别：</td>
<td><input type="radio" name="xing" value="男">男</td>
<td><input type="radio" name="xing" value="女">女</td>
</tr>
<p>
<tr>
<td>民族：</td>
<td><input type="text" name="zu"></td>
</tr>
<p>
<tr>
<td>受教育程度：</td>
<td><select name="edu">
<option value="请选择">请选择</option>
<option value="研究生">研究生</option>
<option value="大学本科">大学本科</option>
<option value="大学专科">大学专科</option>
<option value="高中">高中</option>
<option value="初中">初中</option>
<option value="小学">小学</option>
<option value="未上过学">未上过学</option>
</select></td>
</tr>
<p>
<tr>
<button type="submit" value="提交">提交</button>
</tr>
</form>
</center>
</body>
</html>
//update.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
Created by IntelliJ IDEA.
User: 12140
Date: 2022/10/27
Time: 0:29
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改界面</title>
</head>
<body>
<center>
<form action="updateServlet" method="post">
<tr>
<input type="hidden" name="name" value="${user.name}">
</tr>
<p></p>
<tr>
<td>户别：</td>
<td><input type="radio" name="hu" value="家庭户" <c:if test="${user.hu eq '家庭户'}"> checked="checked"</c:if>>家庭户</td>
<td><input type="radio" name="hu" value="集体户" <c:if test="${user.hu eq '集体户'}"> checked="checked"</c:if>>集体户</td>
</tr>
<p>
<tr>
<td>住房类型：</td>
<td><input type="radio" name="lei" value="家庭住所" <c:if test="${user.lei eq '家庭住所'}"> checked="checked"</c:if>>家庭住所</td>
<td><input type="radio" name="lei" value="集体住所" <c:if test="${user.lei eq '集体住所'}"> checked="checked"</c:if>>集体住所</td>
<td><input type="radio" name="lei" value="工作地住所" <c:if test="${user.lei eq '工作地住所'}"> checked="checked"</c:if>>工作地住所</td>
<td><input type="radio" name="lei" value="其他住所" <c:if test="${user.lei eq '其他住所'}"> checked="checked"</c:if>>其他住所</td>
<td><input type="radio" name="lei" value="无住所" <c:if test="${user.lei eq '无住所'}"> checked="checked"</c:if>>无住所</td>
</tr>
<p>
<tr>
<td>本户现住房面积：</td>
<td><input type="text" name="mian" value="${user.mian}"></td>
</tr>
<p>
<tr>
<td>本户现住房间数：</td>
<td><input type="text" name="shu" value="${user.shu}"></td>
</tr>
<p>
<tr>
<td>身份证号码：</td>
<td><input type="text" name="shen" value="${user.shen}"></td>
</tr>
<p>
<tr>
<td>性别：</td>
<td><input type="radio" name="xing" value="男" <c:if test="${user.xing eq '男'}"> checked="checked"</c:if>>男</td>
<td><input type="radio" name="xing" value="女" <c:if test="${user.xing eq '女'}"> checked="checked"</c:if>>女</td>
</tr>
<p>
<tr>
<td>民族：</td>
<td><input type="text" name="zu" value="${user.zu}"></td>
</tr>
<p>
<tr>
<td>受教育程度：</td>
<td><select name="edu">
<option value="请选择">请选择</option>
<option value="研究生">研究生</option>
<option value="大学本科">大学本科</option>
<option value="大学专科">大学专科</option>
<option value="高中">高中</option>
<option value="初中">初中</option>
<option value="小学">小学</option>
<option value="未上过学">未上过学</option>
</select></td>
</tr>
<p>
<tr>
<button type="submit" value="提交">提交</button>
</tr>
</form>
</center>
</body>
</html>
//index.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
Created by IntelliJ IDEA.
User: 12140
Date: 2022/10/26
Time: 19:12
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>添加界面</title>
</head>
<body>
<center>
<tr>
<button type="submit" value="添加" onclick="window.location.href='add.jsp'">添加</button>
</tr>
<p>
<tr>
<td>户别</td>
<td>住房类型</td>
<td>本户现住房面积</td>
<td>本户现住房间数</td>
<td>户主姓名</td>
<td>身份证号码</td>
<td>性别</td>
<td>民族</td>
<td>受教育程度</td>
</tr>
<p>
<c:forEach items="${list}" var="user" varStatus="userStatus">
<td>${user.hu}</td>
<td>${user.lei}</td>
<td>${user.mian}</td>
<td>${user.shu}</td>
<td>${user.name}</td>
<td>${user.shen}</td>
<td>${user.xing}</td>
<td>${user.zu}</td>
<td>${user.edu}</td>
<td><a href="selectByOne?name=${user.name}">修改</a> <a href="selectByTwo?name=${user.name}">删除</a> <a href="checkServlet?name=${user.name}">查看详情</a></td><p>
</c:forEach>
<p>
<form action="checkServlet" method="post">
<tr>
<td><input type="text" name="name" placeholder="请输入你想要查询的户主姓名"></td>
<td><button type="submit" value="查询">查询</button></td>
</tr>
</form>
</center>
</body>
</html>
//mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<!--数据库连接信息-->
<property name="driver" value="com.mysql.cj.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/ad?useSSL=false"/>
<property name="username" value="root"/>
<property name="password" value="20214063"/>
</dataSource>
</environment>
</environments>
<!--<!–指定sql映射文件的路径–>-->
<!-- <mappers>-->
<!-- <mapper resource="com/example/mapper/UserMapper.xml"/>-->
<!-- </mappers>-->
<!--Mapper代理开发方式-->
<mappers>
<package name="org.example.mapper"/>
</mappers>
</configuration>
//UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"https://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!--
namespace:名称空间
-->
<mapper namespace="org.example.mapper.UserMapper">
<resultMap id="UserResultMap" type="org.example.Bean.User">
<result column="name" property="name"/>
<result column="hu" property="hu"/>
</resultMap>
</mapper>
//Main.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>主界面</title>
</head>
<body>
<a href="aServlet">查询所有</a>
</body>
</html>
//check.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
Created by IntelliJ IDEA.
User: 12140
Date: 2022/10/27
Time: 1:39
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>查询界面</title>
</head>
<body>
<center>
<form>
<tr>
<td>户别</td>
<td>住房类型</td>
<td>本户现住房面积</td>
<td>本户现住房间数</td>
<td>户主姓名</td>
<td>身份证号码</td>
<td>性别</td>
<td>民族</td>
<td>受教育程度</td>
</tr>
<p>
<c:forEach items="${list}" var="user">
<td>${user.hu}</td>
<td>${user.lei}</td>
<td>${user.mian}</td>
<td>${user.shu}</td>
<td>${user.name}</td>
<td>${user.shen}</td>
<td>${user.xing}</td>
<td>${user.zu}</td>
<td>${user.edu}</td>
</c:forEach>
</form>
</center>
</body>
</html>
以上就是详细代码啦，还有一些细节需要纠正：1、下拉框的数据回显；2、文本框输入数据的判断
，明天再说，困了，睡觉！
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