mybatis-spring整合

最新推荐文章于 2024-04-14 11:19:30 发布

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本文详细介绍了如何将MyBatis与Spring框架整合，包括依赖包导入、配置文件设置、事务管理及测试类编写等步骤，实现了数据库操作的简化与透明化。

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mybatis与spring的集合，简化了SqlSessionFactory,SqlSession的获取，使得这些操作对我们都透明化

1导入依赖包

           <dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>4.3.2.RELEASE</version>
			<scope>test</scope>
		</dependency>
		<!-- 数据库连接池 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.0.20</version>
		</dependency>

       <!-- mybatis与spring对接依赖 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.3.2</version>
		</dependency>
		<!-- spring核心依赖 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>5.1.5.RELEASE</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>5.1.5.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>5.1.5.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>5.1.5.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>5.1.5.RELEASE</version>
		</dependency>
		<!-- spring jdbc和事务的支持 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>5.1.5.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>5.1.5.RELEASE</version>
		</dependency>

2增加applicationContext.xml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:c="http://www.springframework.org/schema/c"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:cache="http://www.springframework.org/schema/cache" xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:redisson="http://redisson.org/schema/redisson" 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/context 
		                http://www.springframework.org/schema/context/spring-context-4.3.xsd
		                http://www.springframework.org/schema/cache
                        http://www.springframework.org/schema/cache/spring-cache.xsd
                        http://www.springframework.org/schema/tx 
          				http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
          				http://redisson.org/schema/redisson
          				http://redisson.org/schema/redisson/redisson.xsd
          				http://www.springframework.org/schema/aop
        				http://www.springframework.org/schema/aop/spring-aop-4.2.xsd">


    <context:property-placeholder location="classpath:db.properties"
                                  ignore-unresolvable="true"/>

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
          init-method="init" destroy-method="close">
        <!-- 基本属性 url、user、password -->
        <property name="driverClassName" value="${jdbc_driver}"/>
        <property name="url" value="${jdbc_url}"/>
        <property name="username" value="${jdbc_username}"/>
        <property name="password" value="${jdbc_password}"/>

        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="1"/>
        <property name="minIdle" value="1"/>
        <property name="maxActive" value="20"/>

        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="60000"/>

        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000"/>

        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="300000"/>

        <property name="validationQuery" value="SELECT 'x'"/>
        <property name="testWhileIdle" value="true"/>
        <property name="testOnBorrow" value="false"/>
        <property name="testOnReturn" value="false"/>

        <!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
        <property name="poolPreparedStatements" value="true"/>
        <property name="maxPoolPreparedStatementPerConnectionSize"
                  value="20"/>
        <!-- 配置监控统计拦截的filters -->
        <property name="filters" value="stat"/>
    </bean>


    <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="typeAliasesPackage" value="com.zoie.restaurant.entity"/>
        <property name="mapperLocations" value="classpath*:mapper/*.xml"/>
    </bean>
    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.zoie.restaurant.mapper"/>
    </bean>


    <!-- (事务管理)transaction manager -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
        <qualifier value="transactionManager"/>
    </bean>

    <tx:annotation-driven transaction-manager="transactionManager"/>


    <context:component-scan base-package="com.zoie.restaurant.*">
    </context:component-scan>

</beans>

3修改mybatis-config.xml，删除掉可以被applicationContext.xml代替的信息，最后文件如下，setting的相关信息还是得在mybatis-config.xml中配置

<?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>
	
	<properties resource="db.properties"/>
	
	<settings>
		<setting name="mapUnderscoreToCamelCase" value="true" />
		<setting name="aggressiveLazyLoading" value="false"/>
	</settings>

</configuration>

4编写service层的接口跟实现类
5编写测试类

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import javax.annotation.Resource;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class UserTest {

    @Resource
    TUserService tUserService;


    @Test
    public void getUser(){
        TUser user=tUserService.getById(1l);
        System.out.println(user);
    }
}