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Spring-08-整合Mybatis

时间:2020-09-19 13:13:07      阅读:44      评论:0      收藏:0      [点我收藏+]

1、学习文档

学习文档

 

2、所需依赖

<dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.13</version>
   <scope>test</scope>
</dependency>
?
<dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
   <version>5.1.47</version>
</dependency>
?
<dependency>
   <groupId>org.mybatis</groupId>
   <artifactId>mybatis</artifactId>
   <version>3.5.2</version>
</dependency>
?
<dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-webmvc</artifactId>
   <version>5.1.9.RELEASE</version>
</dependency>
?
<dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-jdbc</artifactId>
   <version>5.1.9.RELEASE</version>
</dependency>
?
<dependency>
   <groupId>org.aspectj</groupId>
   <artifactId>aspectjweaver</artifactId>
   <version>1.9.5</version>
</dependency>
?
<dependency>
   <groupId>org.mybatis</groupId>
   <artifactId>mybatis-spring</artifactId>
   <version>2.0.2</version>
</dependency>
?
<dependency>
   <groupId>org.projectlombok</groupId>
   <artifactId>lombok</artifactId>
   <version>1.16.10</version>
</dependency>

 

3、配置文件

  • spring-dao.xml

    <!--
    DataSource数据源配置
    sqlSessionFactory
    sqlSession
    -->
    ?
    <?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">
    ?
       <!--DataSource数据源配置:使用Spring的数据源来替换Mybatis的配置-->
       <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
           <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
           <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useSSL=true&amp;useUnicode=true&amp;characterEncoding=UTF-8"/>
           <property name="username" value="root"/>
           <property name="password" value="root"/>
       </bean>
    ?
       <!--sqlSessionFactory-->
       <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
           <property name="dataSource" ref="dataSource"/>
    ?
           <!--绑定Mybatis配置文件-->
           <property name="configLocation" value="classpath:mybatis-config.xml"/>
           <property name="mapperLocations" value="classpath:com/hmx/mapper/*.xml"/>
       </bean>
    ?
       <!--sqlSession-->
       <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
           <constructor-arg index="0" ref="sqlSessionFactory"/>
       </bean>
    ?
    </beans>
  • mybatis-config.xml

    <!--
    别名
    设置
    -->
    ?
    <?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核心配置文件-->
    <configuration>
    ?
       <typeAliases>
           <typeAlias type="com.hmx.pojo.User"/>
       </typeAliases>
    ?
       <settings></settings>
    ?
    </configuration>

     

4、方式一

  • applicationContext.xml

    <!--配置bean以及使用-->
    ?
    <?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="spring.xml"/>
    ?
       <bean id="userMapper" class="com.hmx.mapper.UserMapperImpl">
           <property name="sqlSessionTemplate" ref="sqlSession"></property>
       </bean>
    ?
    </beans>
  • 实体类:User

    @Data
    public class User {
    ?
       private int id;
       private String name;
       private String pwd;
    }
  • 接口类:UserMapper.java

    public interface UserMapper {
       public List<User> selectUser();
    }
  • Mybatis的xml文件:UserMapper.xml

    <mapper namespace="com.hmx.mapper.UserMapper">
       <select id="selectUser" resultType="user">
          select * from mybatistest
       </select>
    </mapper>
  • 接口类的实现类:UserMapperImpl.java

    public class UserMapperImpl implements UserMapper {
    ?
       //和之前不同,我们现在所有操作都使用SqlSessionTemplate来执行
       private SqlSessionTemplate sqlSessionTemplate;
    ?
       public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
           this.sqlSessionTemplate = sqlSessionTemplate;
      }
    ?
       public List<User> selectUser() {
           UserMapper mapper = sqlSessionTemplate.getMapper(UserMapper.class);
           return mapper.selectUser();
      }
    }
  • 测试

    public static void selectTest() {
    
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper sqlSession = context.getBean("userMapper", UserMapper.class);
        for (User user : sqlSession.selectUser()) {
            System.out.println(user);
        }
    }

 

5、方式二

  • applicationContext.xml

    <?xml version="1.0" encoding="UTF8"?>
    <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="spring-dao.xml"/>
    
        <bean id="userMapper" class="com.hmx.mapper.UserMapperImpl">
            <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
        </bean>
    
    </beans>
  • 接口类的实现类:UserMapperImpl.java

    public class UserMapperImpl extends SqlSessionDaoSupport implements UserMapper {
        public List<User> selectUser() {
            return getSqlSession().getMapper(UserMapper.class).selectUser();
        }
    }

 

Spring-08-整合Mybatis

原文:https://www.cnblogs.com/LittleSkinny/p/13695181.html

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