maven项目spring整合mybatis

maven项目spring整合mybatis

pom.xml

<?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>org.example</groupId>
    <artifactId>SSM</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.4</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.20</version>
        </dependency>
		<dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>
		<dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.12</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.18</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
   	</dependencies>
    
    <!-- 资源文件的配置-->
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>

mybatis-config.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>
    <mappers>
        <mapper resource="com/dao/IRootMapper.xml"/>
    </mappers>
</configuration>

database.properties 数据库配置文件

jdbc.Url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&allowMultiQueries=true
jdbc.username=root
jdbc.Password=123456
jdbc.maxActive=20

##### spring.xml

?```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="springJDBC.xml"/>
    <import resource="spring-service.xml"/>


</beans>

springJDBC.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
        https://www.springframework.org/schema/context/spring-context.xsd">

    <!--    关联数据库配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>

    <!--    数据库连接池-->
    <bean id="myDataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="maxActive" value="${jdbc.maxActive}"/>
        <property name="url" value="${jdbc.Url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.Password}"/>
    </bean>


    <!--    sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="myDataSource"/>
        <!--        绑定mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--    配置dao接口扫描包 动态实现dao接口注入到spring（反射）-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--        注入sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!--        扫描包-->
        <property name="basePackage" value="com.dao"/>
    </bean>

</beans>

spring-service.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
        https://www.springframework.org/schema/context/spring-context.xsd">


    <context:component-scan base-package="com.service"/>
<!--    service实现类层注入-->
    <bean id="rootServiceImpl" class="com.service.RootServiceImpl">
        <property name="IRootMapper" ref="IRootMapper"/>
    </bean>

<!--    事务-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--    注入数据源-->
        <property name="dataSource" ref="myDataSource"/>
    </bean>

<!--    aop织入-->

</beans>

Root实体类

package com.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

//lombok 
@AllArgsConstructor //全参构造方法
@NoArgsConstructor	//无参构造
@Data	//get set方法
public class Root {
    private String user;
    private String password;
}

dao层

IRootMapper接口

package com.dao;

import com.pojo.Root;

public interface IRootMapper {
    public Root select(Root root);
}

IRootMapper.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.dao.IRootMapper">
    <select id="select" resultType="com.pojo.Root">
        select * from ssm.root where user =#{user} and password = #{password}
    </select>
</mapper>

service层

IRootService service层接口

package com.service;import com.pojo.Root;public interface IRootService {    public Root select(Root root);}

RootServiceImpl service层接口实现类

package com.service;import com.dao.IRootMapper;import com.pojo.Root;import lombok.Data;@Datapublic class RootServiceImpl implements IRootService{    private IRootMapper iRootMapper;    @Override    public Root select(Root root) {        return this.iRootMapper.select(root);    }}

测试

@org.junit.Testpublic void rootServiceTest(){    ApplicationContext applicationContext = new ClassPathXmlApplicationContext("springJDBC.xml","spring-service.xml");    RootServiceImpl impl = applicationContext.getBean("rootServiceImpl",RootServiceImpl.class);    Root root = impl.select(new Root("root", "123456"));    System.out.println(root);}

maven项目spring整合mybatis

原文：https://www.cnblogs.com/SunnyBigBoy/p/14730743.html