Spring整合MyBatis

依赖jar:

Spring整合MyBatis依赖jar

结构：

项目结构

applicationContext.xml:

<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">
    <!--数据源封装类，数据源：获取数据库连接,spring-jdbc.jar中-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="url" value="jdbc:oracle:thin:@192.168.72.3:1521:orcl"></property>
        <property name="username" value="scott"></property>
        <property name="password" value="tiger"></property>
        <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"></property>
    </bean>
    <!--配置sqlSession工厂类-->
    <bean id="factory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--扫描器，相当于MyBatis.xml中mapper下的package标签，扫描后会给对应接口创建对象-->
    <bean id="mapper" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com"/>
        <!--与factory关联org.mybatis.spring.mapper.MapperScannerConfigurer-->
        <property name="sqlSessionFactoryBeanName" value="factory"/>
    </bean>

    <bean id="empService" class="com.Service.Impl.EmpServiceImpl">
        <property name="empMapper" ref="empMapper"></property>
    </bean>
</beans>

EmpMapper：

package com.Mapper;

import com.pojo.Emp;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface EmpMapper {
    @Select("select * from emp")
    public List<Emp> selAll();
}

EmpServiceImpl:

package com.Service.Impl;

import com.Mapper.EmpMapper;
import com.Service.EmpService;
import com.pojo.Emp;

import java.util.List;

public class EmpServiceImpl implements EmpService {
    private EmpMapper empMapper;

    public EmpMapper getEmpMapper() {
        return empMapper;
    }

    public void setEmpMapper(EmpMapper empMapper) {
        this.empMapper = empMapper;
    }

    @Override
    public List<Emp> selAll() {
        return empMapper.selAll();
    }
}

EmpService:

package com.Service;

import com.pojo.Emp;

import java.util.List;

public interface EmpService {
    List<Emp> selAll();
}

Test:

package com;

import com.Service.EmpService;
import com.pojo.Emp;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

public class Test {
    public static void main(String[] args) {
//      ClassPathXmlApplicationContext默认去classes文件夹根目录下寻找文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        EmpService empService = ac.getBean("empService", EmpService.class);
        List<Emp> emps = empService.selAll();
        for (Emp emp : emps) {
            System.out.println(emp);
        }
    }
}