Spring和MyBatis的整合

1.导入jar包

<!--MyBatis和Spring的整合包 由MyBatis提供-->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.3.0</version>
</dependency>
<!--MyBatis的核心jar文件-->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.1</version>
</dependency>

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.10</version>
</dependency>

2.整合MyBatis与Spring

1.创建实体类

public class Bank {
    private String code_crde;
    private String code_name;
    private String code_money;
}

2. 搭建Dao层

public interface IBankDao {
    //查询
    List<Bank> getAllPerson();
}

<?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.SpringAndMyBatis.dao.IBankDao">
    <!-- 目的：为dao接口方法提供sql语句配置 -->
    <select id="getAllPerson" resultType="Bank" >
        <!-- 具体的sql -->
        select  *  from  `bank`
    </select>
</mapper>

3.搭建Service层

public interface IBankService {
    //查询
    List<Bank> getAllPerson();
}

public class IBankServiceImpl implements IBankService {
    private IBankDao iBankDao;
    @Override
    public List<Bank> getAllPerson() {
        return iBankDao.getAllPerson();
    }

    public IBankDao getiBankDao() {
        return iBankDao;
    }

    public void setiBankDao(IBankDao iBankDao) {
        this.iBankDao = iBankDao;
    }
}

4.创建jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///bank
jdbc.username=root
jdbc.password=123

5.创建applicationContext.xml

<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--加载配置文件-->
    <context:property-placeholder location="jdbc.properties"/>
    <!--配置数据源   阿里-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!--配置SqlSessionFactoryBean-->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--加载Mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!--扫描Dao层，省略代码-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.SpringAndMyBatis.dao"/>
    </bean>
    <!-- 注入Dao层-->
 <bean id="iBankDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
     <property name="mapperInterface" value="cn.SpringAndMyBatis.dao.IBankDao"/>
     <property name="sqlSessionFactory" ref="sqlSessionFactoryBean"/>
 </bean>
 <!--Service层-->
 <bean id="iBankService"class="cn.SpringAndMyBatis.service.impl.IBankServiceImpl">
     <property name="iBankDao" ref="IBankDao"/>
 </bean>
   </beans>

6.创建测试类

public static void main(String[] args) {
    /*ApplicationContext*/
    ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
    IBankService iBankService = (IBankService)ctx.getBean("iBankService");

    List<Bank> list = iBankService.getAllPerson();
    for (Bank bank:list){
        System.out.println(bank.getCode_name());
    }
}

注解版

1.修改applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--加载配置文件-->
    <context:property-placeholder location="jdbc.properties"/>
    <!--配置数据源   阿里-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!--配置SqlSessionFactoryBean-->
    <beanid="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--加载Mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!--扫描Dao层，省略代码-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.SpringAndMyBatis.dao"/>
    </bean>
</beans>

2.给Dao层添加注解

@Repository
public interface IBankDao {
    //查询
    List<Bank> getAllPerson();
}

3.给Service添加注解

@Service("iBankService")
public class IBankServiceImpl implements IBankService {
    @Resource
    private IBankDao iBankDao;
    @Override
    public List<Bank> getAllPerson() {
        return iBankDao.getAllPerson();
    }
    public IBankDao getiBankDao() {
        return iBankDao;
    }

    public void setiBankDao(IBankDao iBankDao) {
        this.iBankDao = iBankDao;
    }
}

4.编写测试类

public static void main(String[] args) {
    /*ApplicationContext*/
    ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
    IBankService iBankService = (IBankService)ctx.getBean("iBankService");

    List<Bank> list = iBankService.getAllPerson();
    for (Bank bank:list){
        System.out.println(bank.getCode_name());
    }
}