创建一个Spring集成MyBatis的项目

Posted 2022-12-09 肖帆咪

选择java EE创建一个项目

项目目录

config.properties文件关于数据库的相关数据

driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/mybatis_db?characterEncoding=utf8&serverTimezone=Asia/Shanghai
uname=root
password=root

db.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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://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/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
">
<!--导入属性文件-->
    <context:property-placeholder location="config.properties"></context:property-placeholder>

    <!--创建阿里 提供的数据库连接对象管理类  数据库连接池-->
    <bean class="com.alibaba.druid.pool.DruidDataSource" name="dataSource">
        <property name="driverClassName" value="$driver"></property>
        <property name="url" value="$url"></property>
        <property name="username" value="$uname"></property>
        <property name="password" value="$password"></property>
        <property name="initialSize" value="10"></property>
        <property name="minIdle" value="5"></property>
        <property name="maxActive" value="20"></property>
    </bean>
    <!--配置spring提供的事务管理类-->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--开启spring注解事务-->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>

</beans>

mybatis.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">


    <import resource="db.xml"></import>

    <!--spring管理类sqlSessionFanctory对象的创建-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="myBatis-configer.xml"></property>
        <property name="mapperLocations" value="mapper/*Mapper.xml">
        </property>
    </bean>

    <!--扫描dao接口,生成接口的代理对象-->
    <bean id="mapperFactory" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.springbatis.dao"></property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">
        </property>
    </bean>

</beans>

myBatis-configer.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>

    <properties resource="config.properties"></properties>
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
        <!--        设置映射属性名对应  user_name 对应 userName-->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>

    <!--配置类型别名-->
    <typeAliases>
        <package name="com.springbatis.bean"/>
    </typeAliases>

</configuration>

spring.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:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

<!--  spring开启注解扫描  -->
    <context:component-scan base-package="com.springbatis"></context:component-scan>

    <import resource="mybatis.xml"></import>
</beans>