spring整合mybatis步骤
作者：互联网
spring是一个容器，很多东西都可以直接往里面注入
1.导jar包
模块pom.xml文件
<?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">
<parent>
<artifactId>spring</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>spring08-mybatis</artifactId>
<dependencies>
<!--导入spring依赖 导入springwebmvc包，导这个包之后很多与spring有关的东西都会整合起来-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!--配置mybatis依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<!--导入spring aop的依赖包，实现aop织入-->
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.6</version>
</dependency>
<!--导入spring整合mybatis的包-->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.4</version>
</dependency>
<!--导入spring-jdbc架包，这就可以使用注册驱动管理的DriverManagerDataSource-->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<!--导入lombok简写实体类-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.4</version>
</dependency>
</dependencies>
<!--解决静态文件无法导出问题-->
<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>2.创建mybatis-config.xml，applicationContext.xml文件
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核心配置文件-->
<configuration>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/users?useSSL=false&useUnicode=true&characterEncoding=utf-8"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</dataSource>
</environment>
</environments>
</configuration>
applicationConfig.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">
</beans>3.编写实体类和抽象接口
实体类Student：
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Student {
private int id;
private String name;
private String pwd;
}抽象接口StudentDao：
import com.school.pojo.Student;
import java.util.List;
public interface StudentDao {
List<Student> studentList();
}4.编写接口对应的映射文件StudentDao.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.school.dao.StudentDao">
<select id="studentList" resultType="com.school.pojo.Student">
select * from student
</select>
</mapper>
5.编写接口实现类StudentDaoImpl.java
import com.school.pojo.Student;
import org.mybatis.spring.SqlSessionTemplate;
import java.util.List;
public class StudentDaoImpl implements StudentDao{
private SqlSessionTemplate sqlSession;
public StudentDaoImpl(SqlSessionTemplate sqlSession) {
this.sqlSession = sqlSession;
}
@Override
public List<Student> studentList() {
StudentDao mapper = sqlSession.getMapper(StudentDao.class);
return mapper.studentList();
}
}6.补充applicationConfig.xml，简化mybatis-config.xml
补充之后的applicationConfig.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">
<!--创建数据源，这里用的是spring-jdbc里面的DriverManagerDataSource-->
<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/users?useSSL=false&useUnicode=true&characterEncoding=utf-8"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</bean>
<!--创建sqlSessionFactory工厂-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--配置数据源-->
<property name="dataSource" ref="dataSource" />
<!--加载mybatis-config.xml文件中的配置-->
<property name="configLocation" value="mybatis-config.xml"/>
<!--添加映射-->
<property name="mapperLocations" value="classpath:com/school/dao/StudentDao.xml"/>
</bean>
<!--获取sqlSession-->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<!--SqlSessionTemplate中没有set方法，只能通过有参构造注入-->
<!--<property name="sqlSessionFactory" value="sqlSessionFactory"-->
<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>
<!--将刚刚的实现类注入到spring中-->
<bean id="studentMapper" class="com.school.dao.StudentDaoImpl">
<!--通过构造注入sqlSession-->
<constructor-arg name="sqlSession" ref="sqlSession"/>
</bean>
</beans>简化之后的mybatis-config.xml文件：
<?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>
</configuration>
7.测试运行
import com.school.dao.StudentDao;
import com.school.pojo.Student;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class TestAll {
@Test
public void test1(){
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
StudentDao studentMapper = context.getBean("studentMapper", StudentDao.class);
for (Student student : studentMapper.studentList()) {
System.out.println(student);
}
}
}标签：xml,StudentDao,spring,步骤,org,mybatis,import 来源： https://blog.csdn.net/qq_45366646/article/details/118419124