springboot——springboot的基本配置——springboot整合mybatis——本地实例运行——保存操作——int类型...


PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
select * from usersinsert into users(id,name,age) values(#{id},#{name},#{age})insert into users(id,name,age) values(#{id},#{name},#{age})

package org.example.mapper;import org.example.entity.MyUser;
import org.apache.ibatis.annotations.Mapper;import java.util.List;&＃64;Mapper
public interface UserMapper
{public List findAll();void saveUser(MyUser user);int saveUser2(MyUser user);}

package org.example.service;import org.example.entity.MyUser;import java.util.List;public interface UserService
{List findAll();void saveUser(MyUser user);int saveUser2(MyUser user);}

package org.example.service.Impl;import org.example.entity.MyUser;
import org.example.mapper.UserMapper;
import org.example.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import java.util.List;&＃64;Service
public class UserServiceImpl implements UserService
{&＃64;AutowiredUserMapper userMapper;&＃64;Overridepublic List findAll(){return userMapper.findAll();}&＃64;Overridepublic void saveUser(MyUser user){userMapper.saveUser(user);}public int saveUser2(MyUser user){return userMapper.saveUser2(user);}
}

package org.example.controller;import java.util.List;
import org.example.entity.MyUser;
import org.example.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;&＃64;RestController
public class MyUserController
{&＃64;Autowiredprivate UserService userService;&＃64;GetMapping(value &＃61; "/1")public List home1(){// 查询所有网站List users &＃61; userService.findAll();for (MyUser user : users){System.out.println(user.getId()&＃43;" "&＃43;user.getName()&＃43;" "&＃43;user.getAge());}return users;}&＃64;GetMapping(value &＃61; "/2")public void home2(){MyUser user2 &＃61; new MyUser();user2.setName("TTT");user2.setAge(7878);userService.saveUser(user2);}&＃64;GetMapping(value &＃61; "/3")public int home3(){MyUser user2 &＃61; new MyUser();user2.setName("RRR");user2.setAge(6666);int a &＃61; userService.saveUser2(user2);System.out.println(a);return a;}}