Spring Mybatis 整合Demo

user类

package com.evan.entity;

/**
 * @author yatao.xu
 * @version 1.0.0
 * @date 2021-06-13
 **/
public class User {
    private Integer id;
    private String name;
    private String data;

    public User() {
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getData() {
        return data;
    }

    public void setData(String data) {
        this.data = data;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + ''' +
                ", data='" + data + ''' +
                '}';
    }
}

UserMapper

package com.evan.mapper;

import com.evan.entity.User;

import java.util.List;

public interface UserMapper {
    public List<User> getUser();
}

UserService

package com.evan.service;

import com.evan.entity.User;

import java.util.List;

public interface UserService {

    List<User> findAll();

}

UserServiceImpl

package com.evan.service.impl;

import com.evan.entity.User;
import com.evan.mapper.UserMapper;
import com.evan.service.UserService;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserServiceImpl implements UserService {

    private UserMapper userMapper;


    public void setUserMapper(UserMapper userMapper) {
        this.userMapper = userMapper;
    }

    public List<User> findAll() {
        return userMapper.getUser();
    }
}

Spring-dao.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: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-3.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!--创建数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://127.0.0.1:3306/evan?useSSL=false"/>
        <property name="username" value="root"/>
        <property name="password" value="Qwe123!@#"/>
    </bean>


    <!--创建sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--注册Mapper.xm映射器-->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!--通过 MapperFactoryBean 将接口加入到 Spring 中-->
    <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
        <property name="mapperInterface" value=" com.evan.mapper.UserMapper"/>
    </bean>


<!--    &lt;!&ndash;或者采用下面扫描的方式&ndash;&gt;-->
<!--    &lt;!&ndash;扫描接口包路径,生成包下所有接口的代理对象,并且放入spring容器中&ndash;&gt;-->
<!--    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">-->
<!--        <property name="basePackage" value="com.evan.mapper"/>-->
<!--    </bean>-->

    <!--创建事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--配置事务属性-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="save*"/>
            <tx:method name="update*"/>
            <tx:method name="delete*"/>
            <tx:method name="find*"/>
        </tx:attributes>
    </tx:advice>

    <!--配置事务切面-->
    <aop:config>
        <aop:pointcut id="pc" expression="within(com.evan.service.*)"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pc"/>
    </aop:config>

    <!--配置Service组件-->
    <bean id="userService" class="com.evan.service.impl.UserServiceImpl">
        <!--依赖注入数据，调用属性的set方法-->
        <property name="userMapper" ref="userMapper"/>
    </bean>

</beans>

UserMapper.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.evan.mapper.UserMapper">

    <!--查询所有-->
    <select id="getUser" resultType="com.evan.entity.User">
        select * from student
    </select>
</mapper>

Test类

public class Test_spring_mybatis {

    // sping mybatis dao层整合
    @Test
    public void test_spring_mybatis_connect_dao() throws IOException {
        ApplicationContext context = new ClassPathXmlApplicationContext("spring-dao.xml");
        UserMapper userMapper = (UserMapper) context.getBean("userMapper");
        List<User> users = userMapper.getUser();
        for (User user : users) {
            System.out.println(user);
        }
    }


    // sping mybatis dao service 层整合
    @Test
    public void test_spring_mybatis_connect_dao_service() throws IOException {
        ApplicationContext context = new ClassPathXmlApplicationContext("spring-dao.xml");
        UserService userService = (UserService) context.getBean("userService");
        List<User> users = userService.findAll();
        for (User user : users) {
            System.out.println(user);
        }
    }
}

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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.evan</groupId>
    <artifactId>spring_mybatis_dao_service</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>spring_mybatis_dao_service</name>
    <description>spring_mybatis_dao_service</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.12.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.5</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>
        <!--Spring操作数据库,还需要spring-jdbc-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.4</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.5</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>


        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.21</version>
        </dependency>

    </dependencies>

    <!--在build中配置resources，防止我们资源导出失败的问题-->
    <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>


</project>