spring与mybatis整合

其实他们的整合就相当于，将mybatis的xml配置文件，加载到spring容器中去
domain层：

package com.shuai.domain;

import lombok.Data;

@Data
public class People {
    private  String name;
    private Integer age;
}

service层的实现类：由于没有复习到注解，这里通过set注入的形式将mapper注入到实现类中

package com.shuai.service.impl;

import com.shuai.domain.People;
import com.shuai.mapper.PeopleMapper;
import com.shuai.service.PeopleService;

import java.util.List;

public class PeopleServiceImpl implements PeopleService {
    private PeopleMapper peopleMapper;

    public void setPeopleMapper(PeopleMapper peopleMapper) {
        this.peopleMapper = peopleMapper;
    }

    public List<People> show() {
        return peopleMapper.show();
    }
}

mapper层：

package com.shuai.mapper;

import com.shuai.domain.People;
import org.apache.ibatis.annotations.Select;
import java.util.List;
public interface PeopleMapper {
    @Select("select * from people")
    List<People> show();
}

最主要的是xml配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--配置数据源，连接数据库-->
    <bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/mypeople?serverTimezone=UTC"></property>
        <property name="username" value="root"></property>
        <property name="password" value="3041"></property>
    </bean>
    <!--设置工厂，当创建工厂的时候，配置文件已经加载好了，所以这里需要关联配置好的数据源-->
    <bean id="factory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="datasource"></property>
    </bean>
    <!--配置扫描mapper的功能，扫描后要把扫描好的东西传给sql的工厂-->
    <bean id="mapper" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.shuai.mapper"></property>
        <property name="sqlSessionFactoryBeanName" value="factory"></property>
    </bean>
    <!--配置bean，由于sql已经存在peopleMapper，所以，在该bean下设置set方法可以直接依赖注入-->
    <bean id="peopleService" class="com.shuai.service.impl.PeopleServiceImpl">
        <property name="peopleMapper" ref="peopleMapper"></property>
    </bean>
</beans>

测试类：

import com.shuai.domain.People;
import com.shuai.service.impl.PeopleServiceImpl;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

public class test {
    public static void main(String[] args) {
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("application.xml");
        PeopleServiceImpl peopleService= applicationContext.getBean("peopleService", PeopleServiceImpl.class);
        List<People> peopleList= peopleService.show();
        for (People people : peopleList) {
            System.out.println(people);
        }
    }
}