SSM簡單整合——Spring整合Mybatis

這一篇是接着上一篇SSM簡單整合——Spring整合SpringMVC繼續的，已完成SSM的簡單整合。

編寫Spring代碼，保證其能夠獨立運行

編寫Mybatis的配置文件

<?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>
    <environments default="mysql">
        <environment id="mysql">
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://127.0.0.1:3306/ssm?serverTimezone=UTC"/>
                <property name="username" value="root"/>
                <property name="password" value="liang"/>
            </dataSource>
        </environment>
    </environments>
    
    <mappers>
        <mapper resource="com/liang/dao/AccountDao.xml"/>
    </mappers>
</configuration>

編寫AccountDao映射配置文件(com/liang/dao/AccountDao.xml)

<?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.liang.dao.AccountDao">

    <!--查詢所有-->
    <select id="findAll" resultType="com.liang.domain.Account">
        select * from account;
    </select>

    <insert id="saveAccount" parameterType="com.liang.domain.Account">
        insert into account(name, money) values(#{name},#{money})
    </insert>
</mapper>

編寫測試類

package com.liang.test;

import com.liang.dao.AccountDao;
import com.liang.domain.Account;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

/**
 * 測試Mybatis獨立使用
 */
public class MybatisTest {

    SqlSession sqlSession = null;
    InputStream inputStream = null;
    AccountDao accountDao = null;
    @Before
    public void before() throws IOException {
        inputStream = Resources.getResourceAsStream("mybatis.xml");
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        sqlSession = sqlSessionFactory.openSession();
        accountDao = sqlSession.getMapper(AccountDao.class);

    }
    /**
     * 測試查詢所有
     * @throws IOException
     */
    @Test
    public void mybatisTestFindAll() throws IOException {
        List<Account> accounts = accountDao.findAll();
        for (Account account : accounts){
            System.out.println(account);
        }
    }

    /**
     * 測試保存賬戶
     */
    @Test
    public void mybatisTestSaveAccount(){
        Account account = new Account();
        account.setName("娃哈哈");
        account.setMoney(999.0);
        accountDao.saveAccount(account);
    }

    @After
    public void after() throws IOException {
        sqlSession.close();
        inputStream.close();
    }
}

需要的jar包

    <!--mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.5</version>
    </dependency>
    <!--mysql-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.20</version>
    </dependency>

Spring整合Mybatis

整合思路：把mybatis配置文件中內容配置到spring配置文件中，同時把mybatis配置文件的內容清除掉。刪除AccountDao接口的實現類。
Mybatis的配置文件

<?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>
</configuration>

把Mybatis配置文件中的內容配置到Spring的配置文件中

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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/context
       http://www.springframework.org/schema/context/spring-context.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">
    <!--配置spring創建容器時要掃描的包-->
    <context:component-scan base-package="com.liang">
        <!--表示不掃描@Controller註解的java類-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--配置數據源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql:///ssm?serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="liang"/>
    </bean>
    <!--配置Mybatis的Session工程-->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--數據庫連接池-->
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis.xml"/>
    </bean>

    <!--配置Mapper掃面器-->
    <bean  class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.liang.dao"/>
    </bean>

    <!--配置事務管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事務的通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED" read-only="false"/>
            <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    <!--配置aop-->
    <aop:config>
        <!--配置切入點表達式-->
        <aop:pointcut id="pt1" expression="execution(* com.liang.service.impl.*.*(..))"/>
        <!--建立通知和切入點表達式的關係-->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt1"/>
    </aop:config>

</beans>

需要的jar包

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>2.0.5</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.2.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.9.5</version>
    </dependency>