spring学习笔记(整合mybatis)

spring整合mybatis

一、环境搭建
导入依赖

<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">
    <parent>
        <artifactId>spring_studyartifactId>
        <groupId>com.wjhgroupId>
        <version>1.0-SNAPSHOTversion>
    parent>
    <modelVersion>4.0.0modelVersion>

    <artifactId>spring_mybarisartifactId>

    <dependencies>
    	 <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>5.2.0.RELEASEversion>
        dependency>
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
        dependency>
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <version>1.18.10version>
        dependency>
    dependencies>
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.47version>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.5.6version>
        dependency>
        <dependency>
            <groupId>org.aspectjgroupId>
            <artifactId>aspectjweaverartifactId>
            <version>1.9.6version>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>2.0.6version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>5.2.10.RELEASEversion>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-testartifactId>
            <version>5.2.10.RELEASEversion>
        dependency>
    dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/javadirectory>
                <includes>
                    <include>**/*.propertiesinclude>
                    <include>**/*.xmlinclude>
                includes>
                <filtering>falsefiltering>
            resource>
            <resource>
                <directory>src/main/resourcesdirectory>
                <includes>
                    <include>**/*.propertiesinclude>
                    <include>**/*.xmlinclude>
                includes>
                <filtering>falsefiltering>
            resource>
        resources>
    build>


project>

二、实体类User：

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private int id;
    private String userName;
    private Date userBirthday;
    private char userSex;
    private String userAdress;
}

三、userDao接口:

@Repository
public interface UserDao {

    List<User> selectAll();

}

四、UserService接口:

public interface UserService {
    List<User> selectAll();
}

五、UserServiceImpl实现类：

@Service(value = "userService")
public class UserServiceImpl implements UserService {
    
    @Autowired
    private UserDao userDao;

    @Override
    public List<User> selectAll() {
        return userDao.selectAll();
    }
}

六、spring的配置文件：applicationContext.xml

<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"
       xmlns:scpan="http://www.springframework.org/schema/context"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
     http://www.springframework.org/schema/beans/spring-beans.xsd
     http://www.springframework.org/schema/tx
     http://www.springframework.org/schema/tx/spring-tx.xsd
     http://www.springframework.org/schema/aop
     http://www.springframework.org/schema/aop/spring-aop.xsd
     http://www.springframework.org/schema/context
     http://www.springframework.org/schema/context/spring-context.xsd">

  
    <scpan:component-scan base-package="com.wjh">
        <scpan:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
        <scpan:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice" />
    scpan:component-scan>


    
    <context:property-placeholder location="jdbc.properties" />

    
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${driver}"/>
        <property name="url" value="${url}"/>
        <property name="username" value="${name}"/>
        <property name="password" value="${password}"/>
    bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>

        
        <property name="mapperLocations" value="classpath:com/wjh/dao/*.xml"/>
    bean>

    
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.wjh.dao"/>
    bean>


beans>

说明：因为mybatis配置文件的所有配置都可以整合到applicationContext.xml中，所有删去了mybatis的配置文件。

七、映射文件UserDao.xml

<mapper namespace="com.wjh.dao.UserDao">
    <resultMap id="userMap" type="com.wjh.domain.User">
        <id column="id" property="id"/>
        <result column="username" property="userName"/>
        <result column="birthday" property="userBirthday"/>
        <result column="sex" property="userSex"/>
        <result column="address" property="userAdress"/>
    resultMap>
    
    <select id="selectAll" resultMap="userMap">
        select * from user
    select>

mapper>

测试：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext.xml")
public class SpringTest {

    @Autowired
    private UserService userService;

    @Test
    public void test(){
        List<User> users = userService.selectAll();
        for (User user : users){
            System.out.println(user);
        }
    }
}

测试结果：