SpringBoot mybatis方式实现增删改查

SpringBoot mybatis方式实现增删改查
首先看一下目录结构

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application.yml文件

server:
  port: 8080

spring:
    datasource:
        name: test
        url: jdbc:mysql://127.0.0.1:3306/myDataBase
        username: root
        password: 1qaz2wsx
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.jdbc.Driver
        filters: stat
        maxActive: 20
        initialSize: 1
        maxWait: 60000
        minIdle: 1
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: select 'x'
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        poolPreparedStatements: true
        maxOpenPreparedStatements: 20

mybatis:
  mapper-locations: classpath:mapping/*.xml
  type-aliases-package: com.winter.model

Model 代码如下

package com.winter.model;

public class User {
    private Integer userId;

    private String userName;

    private String userAge;


    public Integer getUserId() {
        return userId;
    }

    public void setUserId(Integer userId) {
        this.userId = userId;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName == null ? null : userName.trim();
    }

    public String getUserAge() {
        return userAge;
    }

    public void setUserAge(String userAge) {
        this.userAge = userAge == null ? null : userAge.trim();
    }


}

ViewController 代码都加了注释

package com.winter.controller;

import com.winter.model.User;
import com.winter.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping(value = "/user")
public class UserController {

    @Autowired
    private UserService userService;

    /*Get方式方便web测试*/

    /*增加用户*/
    // http://localhost:8080/user/addUser/?userName=Alex&userAge=20
    @ResponseBody
    @RequestMapping(value = "/addUser", produces = {"application/json;charset=UTF-8"})
    public int addUser(User user){
        return userService.addUser(user);
    }

    /*删除用户*/
    // http://localhost:8080/user/deleteUser/?userId=2
    @ResponseBody
    @RequestMapping(value = "/deleteUser",produces = {"application/json;charset=UTF-8"})
    public  int deleteUser(User user){
        return userService.deleteUser(user);
    }

    /*修改用户*/
    // http://localhost:8080/user/updateUser/?userId=3&userName=刘牧师&userAge=50
    @ResponseBody
    @RequestMapping(value = "/updateUser",produces = {"application/json;charset=UTF-8"})
    public  int  updateUser(User user){
        return userService.updateUser(user);
    }

    /*根据UserId查找用户*/
    // http://localhost:8080/user/getUserById/?userId=3
    @ResponseBody
    @RequestMapping(value = "/getUserById", produces = {"application/json;charset=UTF-8"})
    public User getUserById(User user){
        return userService.getUserById(user);
    }

    /*查询所有用户*/
    // http://localhost:8080/user/getAllUsers
    @ResponseBody
    @RequestMapping(value = "/getAllUsers", produces = {"application/json;charset=UTF-8"})
    public Object findAllUser(){
        return userService.findAllUser();
    }
}

UserService

package com.winter.service;

import com.winter.model.User;

import java.util.List;

public interface UserService {

    int addUser(User user);

    int deleteUser(User user);

    int updateUser(User user);

    User getUserById(User user);

    List<User> findAllUser();
}

UserServiceImpI

package com.winter.service;

import com.winter.mapper.UserMapper;
import com.winter.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserServiceImpl implements  UserService{
    @Autowired
    private UserMapper userMapper;

    @Override
    public int addUser(User user) {
        return userMapper.addUser(user);
    }

    @Override
    public int deleteUser(User user){
        return userMapper.deleteUser(user);
    }

    @Override
    public  int updateUser(User user){
        return userMapper.updateUser(user);
    }

    @Override
    public  User getUserById(User user){
        return userMapper.getUserById(user);
    }

    @Override
    public List<User> findAllUser() {
        return userMapper.selectAllUser();
    }
}

UserMapper

package com.winter.mapper;

import com.winter.model.User;

import java.util.List;

public interface UserMapper {

    int addUser(User user);

    int deleteUser(User user);

    int updateUser(User user);

    User getUserById(User user);

    List<User> selectAllUser();
}

UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.winter.mapper.UserMapper" >

    <insert id="addUser" parameterType ="com.winter.model.User">
    insert  into tb_user(user_name,user_age)
    values (#{userName},#{userAge})
    </insert>

    <delete id="deleteUser" parameterType ="com.winter.model.User">
    delete from tb_user where user_id = #{userId}
    </delete>

    <update id="updateUser" parameterType ="com.winter.model.User">
    update  tb_user set user_name =#{userName},user_age = #{userAge}  where  user_id= #{userId}
    </update>

    <select id="getUserById" parameterType ="com.winter.model.User" resultType="com.winter.model.User">
    select  user_id userId,user_name userName,user_age userAge
    from tb_user where user_id= #{userId}
    </select>

    <select id="selectAllUser" resultType="com.winter.model.User">
    select  user_id userId,user_name userName,user_age userAge
    from tb_user
    </select>


</mapper>

Demo:https://github.com/destinyzhao/springboot-mybatis-dome