【Mybatis-plus学习02】Spring + Mybatis + MP-CFANZ编程社区

文章目录

引言

引入了Spring框架，数据源、构建等工作就交给了Spring管理。

1. Spring + Mybatis + MP整合

1.1 新建子模块mp_spring

在这里插入图片描述

1.2 导入spring相关坐标

在mp模块下创建子模块mp_spring，子模块可以继承mp模块下的坐标依赖，但使用spring框架还是需要导入spring相关坐标依赖
mp_spring模块下的pom.xml

	 <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>

1.3 编写spring核心配置文件以及jdbc.properties数据源

jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/mp?
useUnicode=true&characterEncoding=utf8&autoReconnect=true&allowMultiQueries=true&useSSL=false
jdbc.username=root
jdbc.password=123456

applicationContext.xml
需要注意的是：这里使用MP提供的sqlSessionFactory，完成了Spring与MP的整合

<context:property-placeholder location="classpath:*.properties"/>
    <!-- 定义数据源 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
          destroy-method="close">
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="maxActive" value="10"/>
        <property name="minIdle" value="5"/>

    </bean>
    <!--这里使用MP提供的sqlSessionFactory，完成了Spring与MP的整合-->
    <bean id="sqlSessionFactory"
          class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--扫描mapper接口，使用的依然是Mybatis原生的扫描器-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="spring.mapper"/>
    </bean>

1.4 添加User实体类以及UserMapper接口

import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;//带全参的构造方法
import lombok.Data;//getter和setter方法及tostring
import lombok.NoArgsConstructor;//无参构造
@Data
@NoArgsConstructor
@AllArgsConstructor
@TableName("tb_user")
public class User {
    private Long id;
    private String userName;
    private String password;
    private String name;
    private Integer age;
    private String email;
}

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import spring.pojo.User;

public interface UserMapper extends BaseMapper<User> {
}

1.5 添加测试类进行测试

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import spring.mapper.UserMapper;
import spring.pojo.User;

import java.util.List;

@RunWith(SpringJUnit4ClassRunner.class)
//配置spring核心配置文件的路径
@ContextConfiguration(locations = "classpath:applicationContext.xml")
public class TestDemo1 {


    @Autowired
    private UserMapper userMapper;

    @Test
    public void test01(){
        List<User> userList = userMapper.selectList(null);
        for (User user : userList) {
            System.out.println(user);
        }
    }
}

接下来看控制台输出