spring逐步整合orm实例--第六例：整合matis。

嗯还好自己坚持了下来，马上就到最后一个的练习了哈哈哈。

先看依赖：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.automannn.springZhenghe</groupId>
    <artifactId>spirngZhenhe</artifactId>
    <version>1.0-SNAPSHOT</version>


    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.1.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.44</version>
        </dependency>

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-dbcp2</artifactId>
            <version>2.4.0</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>5.1.1.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.2.8</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
    </dependencies>
</project>

关于依赖，它的核心为： mybaits-spring。需要注意的是，这个厉害了，因为它不是spring实现的整合，而是mybatis主动的整合。

它的使用：

package com.automannn.springZhenhe.dao;

import com.automannn.springZhenhe.entity.Person;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.springframework.context.ApplicationContext;

/**
 * @author [email protected]
 * @time 2018/10/16 17:08
 */
public class MyBatisPersonDao {
    SqlSessionFactory sqlSessionFactory;

    private void setSqlSessionFactoryBean(ApplicationContext context,String id){
        //返回的是DefaultSqlSessionFactory，很奇怪
        //this.sqlSessionFactoryBean= (SqlSessionFactoryBean) context.getBean(id);
        this.sqlSessionFactory= (SqlSessionFactory) context.getBean(id);
    }

    public MyBatisPersonDao(ApplicationContext context,String id){
        setSqlSessionFactoryBean(context,id);
    }

    public void add(Person person) throws Exception {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        PersonMapper personMapper= sqlSession.getMapper(PersonMapper.class);
        personMapper.add(person);
    }


}

相比较hibernate的方式，这个稍稍要复杂一点。因为执行逻辑的问题，所以我将具体的操作方法封装到了这个类内部。

它的配置文件：

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

    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <value>classpath:jdbc.properties</value>
        </property>
    </bean>

    <bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp2.BasicDataSource">
        <property name="driverClassName" value="${jdbc.driverClassName}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
    </bean>
    <!-- myBatis 整合的配置文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 配置数据库表对应的java实体类 所在的包-->
        <property name="typeAliasesPackage" value="com.automannn.springZhenhe.entity" />
        <property name="mapperLocations" value="classpath:/mapper/*.xml" />
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.automannn.springZhenhe.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>
</beans>

注意，与模板方法不同的是，我们不再将自己的类通过继承关系配置到spring 容器中，而是以这种非侵入的方式，直接取sqlSessionFactory的方式。同时这里要会用Mybatis也是一个先觉条件。自然地，它也包含了它本身的一些配置文件：

package com.automannn.springZhenhe.dao;

import com.automannn.springZhenhe.entity.Person;

/**
 * @author [email protected]
 * @time 2018/10/16 17:13
 */
public interface PersonMapper {
    void add(Person person);
}

<?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="com.automannn.springZhenhe.dao.PersonMapper">
    <resultMap id="personMap" type="com.automannn.springZhenhe.entity.Person">
        <id property="pid" column="pid"/>
        <result property="pName" column="pname" jdbcType="VARCHAR"/>
    </resultMap>

    <select id="add" parameterType="com.automannn.springZhenhe.entity.Person">
        INSERT INTO person(pid,pname) VALUES (#{pid},#{pName})
    </select>

</mapper>

它的入口测试：

package com.automannn.springZhenhe;

import com.automannn.springZhenhe.dao.*;
import com.automannn.springZhenhe.entity.Person;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author [email protected]
 * @time 2018/10/16 11:31
 */
public class App {

    public static void main(String[] args) throws Exception {
        ApplicationContext context = new ClassPathXmlApplicationContext("config.xml");
        MyBatisPersonDao myBatisPersonDao= new MyBatisPersonDao(context,"sqlSessionFactory");
        Person person = new Person();
        person.setPid(12);
        person.setpName("ggg");
        myBatisPersonDao.add(person);
    }



}

运行：

spring逐步整合orm实例--第六例：整合matis。

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