Integration steps
- Importing must jar package
- mybatis core jar package
- mybatis dependent jar package
- Database-driven package
- Establishment of a database table
- The establishment of the entity class
- Establish Mapper Interface
- Establish sql mapping file
<?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">
<!-- 编写sql语句 -->
<mapper namespace="com.fei.dao.CustomerMapper">
<select id="selectList" resultType="com.fei.domain.Customer">
select * from t_customer
</select>
</mapper>
- Establish sqlMapConfig.xml profile
<?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>
<!-- 读取配置文件 -->
<properties resource="db.properties" />
<!-- 配置数据库连接池 -->
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="mapper/CustomerMapper.xml" />
</mappers>
</configuration>
// 0创建SqlSessionFactoryBuilder
SqlSessionFactoryBuilder builder = new SqlSessionFactoryBuilder();
// 1加载sqlMapConfig.xml配置文件
InputStream is = Resources.getResourceAsStream("sqlMapConfig.xml");
// 2创建sqlSessionFactory
SqlSessionFactory factory = builder.build(is);
// 3打开SqlSession
SqlSession sqlSession = factory.openSession();
// 4获取Mapper接口的对象
CustomerMapper customerMapper = sqlSession.getMapper(CustomerMapper.class);
// 5.操作
Customer customer = new Customer();
customer.setName("小明85");
customer.setPhone("18801069853");
customer.setGender("男");
customer.setAddress("北京市海淀区");
customerMapper.insert(customer);
// 6提交事务
sqlSession.commit();
// 7关闭连接
sqlSession.close();