【Spring】（六）MyBatis与Spring的整合步骤（含详细整合案例）

云祁
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MyBatis与Spring的整合

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第一步：导入jar包

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包含spring、mybatis、mybatis-spring的jar包，如有需要的朋友可以直接留言哦~

第二步：创建两个Source Folder文件夹（ resources和test）

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第三步：创建实体类

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第四步：创建dao层接口、实现类、mapper映射文件

1、BillMapper接口

package cn.smbms.dao.bill;

import java.util.List;

import cn.smbms.pojo.Bill;
import org.apache.ibatis.annotations.Param;

public interface BillMapper {
	/**
	 * 增加订单
	 * @param bill
	 * @return
	 * @throws Exception
	 */
	public int add(Bill bill)throws Exception;


	/**
	 * 通过查询条件获取供应商列表-模糊查询-getBillList
	 * @return
	 * @throws Exception
	 */
	public List<Bill> getBillList(@Param(value = "providerId") String providerId,
								  @Param(value = "productName") String productName,
								  @Param(value = "isPayment") String isPayment)throws Exception;
	
	/**
	 * 通过delId删除Bill
	 * @param delId
	 * @return
	 * @throws Exception
	 */
	public int deleteBillById(String delId)throws Exception;
	
	
	/**
	 * 通过billId获取Bill
	 * @param id
	 * @return
	 * @throws Exception
	 */
	public Bill getBillById(String id)throws Exception;
	
	/**
	 * 修改订单信息
	 * @param bill
	 * @return
	 * @throws Exception
	 */
	public int modify(Bill bill)throws Exception;

	/**
	 * 根据供应商ID查询订单数量
	 * @param providerId
	 * @return
	 * @throws Exception
	 */
	public int getBillCountByProviderId(String providerId)throws Exception;
}

2、BillMapperImpl实现类

package cn.smbms.dao.bill;


import cn.smbms.pojo.Bill;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

public class BillMapperImpl implements BillMapper {
    ApplicationContext context=new ClassPathXmlApplicationContext("ApplicationContext.xml");
    BillMapper mapper= (BillMapper) context.getBean("billMapper");

    @Override
    public int add(Bill bill) throws Exception {
        return mapper.add(bill);
    }

    @Override
    public List<Bill> getBillList(String providerId, String productName, String isPayment) throws Exception {
        return mapper.getBillList(providerId, productName, isPayment);
    }

    @Override
    public int deleteBillById(String delId) throws Exception {
        return mapper.deleteBillById(delId);
    }

    @Override
    public Bill getBillById(String id) throws Exception {
        return mapper.getBillById(id);
    }

    @Override
    public int modify(Bill bill) throws Exception {
        return mapper.modify(bill);
    }

    @Override
    public int getBillCountByProviderId(String providerId) throws Exception {
        return mapper.getBillCountByProviderId(providerId);
    }
}

3、BillMapper.xml配置文件

<?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="cn.smbms.dao.bill.BillMapper">
    <insert id="add" parameterType="cn.smbms.pojo.Bill">
        insert into smbms_bill (billCode, productName, productDesc,
         productUnit, productCount, totalPrice, isPayment, createdBy,
          creationDate, modifyBy, modifyDate, providerId)
          values (#{billCode},#{productName},#{productDesc},#{productUnit},#{productCount},
          #{totalPrice},#{isPayment},#{createdBy},#{creationDate},#{modifyBy},
          #{modifyDate},#{providerId})
    </insert>
    <select id="getBillList" resultType="cn.smbms.pojo.Bill">
        select b.*,p.proName as providerName
        from smbms_bill b, smbms_provider p
        where b.providerId = p.id
        <if test="providerId!=null">
            and providerId=#{providerId}
        </if>
        <if test="providerId!=null">
            and productName like CONCAT('%',#{productName},'%')
        </if>
        <if test="providerId!=null">
            and isPayment=#{isPayment}
        </if>
    </select>
    <delete id="deleteBillById" parameterType="int">
        delete from smbms_bill where id=#{id}
    </delete>
    <select id="getBillById" resultType="cn.smbms.pojo.Bill">
        select b.*,p.proName as providerName
        from smbms_bill b, smbms_provider p
		where b.providerId = p.id and b.id=#{id}
    </select>
    <update id="modify" parameterType="cn.smbms.pojo.Bill">
        update smbms_bill set billCode=#{billCode}, productName=#{productName}, productDesc=#{productDesc},
        productUnit=#{productUnit},productCount=#{productCount},totalPrice=#{totalPrice},
		isPayment=#{isPayment},providerId=#{providerId},modifyBy=#{modifyBy},modifyDate=#{modifyDate}
		where id = #{id}
    </update>
    <select id="getBillCountByProviderId" resultType="int">
        select count(1) as billCount
        from smbms_bill
        where providerId = #{providerId}
    </select>
</mapper>

第五步：创建service层接口、实现类

1、BillService接口

package cn.smbms.service.bill;

import java.util.List;

import cn.smbms.pojo.Bill;

public interface BillService {
	/**
	 * 增加订单
	 * @param bill
	 * @return
	 */
	public boolean add(Bill bill);


	/**
	 * 通过条件获取订单列表-模糊查询-billList
	 * @param bill
	 * @return
	 */
	public List<Bill> getBillList(Bill bill);
	
	/**
	 * 通过billId删除Bill
	 * @param delId
	 * @return
	 */
	public boolean deleteBillById(String delId);
	
	
	/**
	 * 通过billId获取Bill
	 * @param id
	 * @return
	 */
	public Bill getBillById(String id);
	
	/**
	 * 修改订单信息
	 * @param bill
	 * @return
	 */
	public boolean modify(Bill bill);
	
}

2、BillServiceImpl实现类

package cn.smbms.service.bill;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;

import cn.smbms.dao.BaseDao;
import cn.smbms.dao.bill.BillMapper;
import cn.smbms.dao.bill.BillMapperImpl1;
import cn.smbms.pojo.Bill;

public class BillServiceImpl implements BillService {
	
	private BillMapper billMapper;
	public BillServiceImpl(){
		billMapper = new BillMapperImpl1();
	}
	@Override
	public boolean add(Bill bill) {
		// TODO Auto-generated method stub
		boolean flag = false;
		Connection connection = null;
		try {
			connection = BaseDao.getConnection();
			connection.setAutoCommit(false);//开启JDBC事务管理
			if(billMapper.add(bill) > 0)
				flag = true;
			connection.commit();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			try {
				System.out.println("rollback==================");
				connection.rollback();
			} catch (SQLException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
		}finally{
			//在service层进行connection连接的关闭
			BaseDao.closeResource(connection, null, null);
		}
		return flag;
	}

	@Override
	public List<Bill> getBillList(Bill bill) {
		// TODO Auto-generated method stub
		Connection connection = null;
		List<Bill> billList = null;
		System.out.println("query productName ---- > " + bill.getProductName());
		System.out.println("query providerId ---- > " + bill.getProviderId());
		System.out.println("query isPayment ---- > " + bill.getIsPayment());
		
		try {
			connection = BaseDao.getConnection();
			billList = billMapper.getBillList("","","");
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			BaseDao.closeResource(connection, null, null);
		}
		return billList;
	}

	@Override
	public boolean deleteBillById(String delId) {
		// TODO Auto-generated method stub
		Connection connection = null;
		boolean flag = false;
		try {
			connection = BaseDao.getConnection();
			if(billMapper.deleteBillById(delId) > 0)
				flag = true;
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			BaseDao.closeResource(connection, null, null);
		}
		return flag;
	}

	@Override
	public Bill getBillById(String id) {
		// TODO Auto-generated method stub
		Bill bill = null;
		Connection connection = null;
		try{
			connection = BaseDao.getConnection();
			bill = billMapper.getBillById(id);
		}catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
			bill = null;
		}finally{
			BaseDao.closeResource(connection, null, null);
		}
		return bill;
	}

	@Override
	public boolean modify(Bill bill) {
		// TODO Auto-generated method stub
		Connection connection = null;
		boolean flag = false;
		try {
			connection = BaseDao.getConnection();
			if(billMapper.modify(bill) > 0)
				flag = true;
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			BaseDao.closeResource(connection, null, null);
		}
		return flag;
	}
}

第六步：在resource文件夹中编写mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
 <!--这里可以加入类型别名，其他配置已经转到Spring中-->
</configuration>

第七步：在resource文件夹中编写applicationContext.xml

因为测试了三种MyBatis与Spring整合的方法，所以配置文件显得很冗长，请注意注掉的部分代码！

最终采用的是org.mybatis.spring.mapper.MapperScannerConfigurer，这也是在实际工作情况中使用较多的一种整合方式。

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

    <!--引入properties文件-->
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location">
            <value>classpath:database.properties</value>
        </property>
    </bean>

    <!--配置DataSource-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="${driver}"/>
        <property name="url" value="${url}"/>
        <property name="username" value="${user}"/>
        <property name="password" value="${pwd}"/>
    </bean>

    <!--配置SqlSessionFactoryBean-->
    <bean id="factory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--引用数据源组件-->
        <property name="dataSource" ref="dataSource"/>
        <!--引用MyBatis配置文件中的配置,必须有,里面的内容可以为空-->
        <!-- 有关mybatis的特性配置可以写在该文件中,比如插件,setting属性等 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <!-- 指定mapper文件位置,当不指定时mapper映射文件默认与接口在一个包下 -->
        <property name="mapperLocations" value="classpath*:cn/smbms/dao/**/*.xml"/>
    </bean>
    <!--
         Mybatis-Spring为我们提供了一个实现了SqlSession接口的SqlSessionTemplate类，它是线程安全的，
         可以被多个Dao同时使用。
         同时它还跟Spring的事务进行了关联，确保当前被使用的SqlSession是一个已经和Spring的事务进行绑定了的。
         而且它还可以自己管理Session的提交和关闭。当使用了Spring的事务管理机制后，
         SqlSession还可以跟着Spring的事务一起提交和回滚。
      -->
    <!--配置SqlSessionTemplate-->
    <bean id="session" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg name="sqlSessionFactory" ref="factory"></constructor-arg>
    </bean>
    
    <!--配置实现类-->
    <!--<bean id="userMapper" class="cn.smbms.dao.user.UserMapperImpl">-->
        <!--<property name="session" ref="session"/>-->
        <!--<property name="session" ref="session"></property>-->
    <!--</bean>-->

    <!--直接配置接口-->
    <!--<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">-->
        <!--<property name="mapperInterface" value="cn.smbms.dao.user.UserMapper"/>-->
        <!--<property name="sqlSessionFactory" ref="factory"/>-->
    <!--</bean>-->

    <!--直接配置接口-->
    <!--<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">-->
        <!--<property name="basePackage" value="cn.smbms.dao"/>-->
        <!--<property name="sqlSessionFactoryBeanName" value="factory"/>-->
    <!--</bean>-->

    <!--配置扫描包--> <!-- 代理dao层接口实现类 -->
    <bean id="mapConf" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.smbms.dao"/>
    </bean>

    <!--配置扫描注解定义的业务Bean-->
    <context:component-scan base-package="cn.smbms.service"/>
    <!--<context:annotation-config></context:annotation-config>-->

    <!--配置事务管理bean-->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--配置对应的方法和事务传播机制-->
    <!--<tx:advice id="txAdvice" transaction-manager="txManager">-->
        <!--<tx:attributes>-->
            <!--<tx:method name="updateTian*" timeout="-1"/>-->
            <!--<tx:method name="*" propagation="REQUIRED"/>-->
        <!--</tx:attributes>-->
    <!--</tx:advice>-->
    <!--配置定义切面-->
    <!--<aop:config>-->
        <!--&lt;!&ndash;定义切入点&ndash;&gt;-->
        <!--<aop:pointcut id="serviceMethod" expression="execution(public int updateTian())"/>-->
        <!--&lt;!&ndash;将事务增强与切入点组合&ndash;&gt;-->
        <!--<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethod"/>-->
    <!--</aop:config>-->

    <!--注解-->
    <tx:annotation-driven transaction-manager="txManager"/>

</beans>

第八步：在test文件夹中编写测试方法

一个简单的快捷键：ctrl+shift+T ，我们创建BillMapperImpl类的测试方法，对功能模块进行测试。

package cn.smbms.dao.bill;

import cn.smbms.pojo.Bill;
import org.apache.log4j.Logger;
import org.junit.Test;

import java.math.BigDecimal;
import java.util.Date;

import static org.junit.Assert.*;

public class BillMapperImplTest {
    Logger logger=Logger.getLogger(BillMapperImplTest.class);
    BillMapper mapper=new BillMapperImpl();

    @Test
    public void add() {

        Bill bill=new Bill();
        bill.setBillCode("BILL2016_020");
        bill.setProductName("鞭炮");
        bill.setProductDesc("烟花炮竹");
        bill.setProductUnit("箱");
        bill.setProductCount(BigDecimal.valueOf(500));
        bill.setTotalPrice(BigDecimal.valueOf(1000));
        bill.setIsPayment(1);
        bill.setCreatedBy(1);
        bill.setCreationDate(new Date());
        bill.setProviderId(13);
        try {
            int row=mapper.add(bill);
            if (row>0){
                logger.info("成功插入一条商品信息");
            }else {
                logger.info("插入不成功");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Test
    public void getBillList() {
        try {
            logger.info(mapper.getBillList("6","油","2"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Test
    public void deleteBillById() {
        try {
            int row=mapper.deleteBillById("26");
            if (row>0){
                logger.info("删除成功");
            }else {
                logger.info("删除失败");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    @Test
    public void getBillById() {
        try {
            logger.info(mapper.getBillById("1"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Test
    public void modify() {
        Bill bill=new Bill();
        bill.setId(14);
        bill.setBillCode("151654");
        bill.setProductName("西北香米");
        try {
            int row=mapper.modify(bill);
            if (row>0){
                logger.info("成功修改一条商品信息");
            }else {
                logger.info("修改不成功");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Test
    public void getBillCountByProviderId() {
        try {
            logger.info("查询供应商数"+mapper.getBillCountByProviderId("1"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

在这里插入图片描述
以上，便是采用MapperScannerConfigurer方式进行的MyBatis与Spring的整合！

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