标签:group 工具 aaa stc dea map puts out input
IDEA工具下的mybatis快速入门
1、添加依赖(在pox.xml文件下添加)
<properties> <maven.coppiler.source>1.9</maven.coppiler.source> <maven.coppiler.target>1.9</maven.coppiler.target> </properties> <dependencies> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.6</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.5</version> </dependency> </dependencies>
2、编写pojo对象(即表中的实体类)
3、编写映射文件(xxxMapper.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="cn.aaa.Users">
<select id="findAll" resultType="domain.Users">
SELECT * FROM users;
</select>
</mapper>
4、编写核心配置文件(SqlMapConfig.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>
<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://127.0.0.1:3306/mybatis?characterEncoding=utf8" />
<property name="username" value="root" />
<property name="password" value="root" />
</dataSource>
</environment>
</environments>
<!--映射文件路径-->
<mappers>
<mapper resource="cn/lijun/UsersMapper.xml"></mapper>
</mappers>
</configuration>
5、测试框架
public class TestCusom {
@Test
public void test(){
InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("SqlMapConfig.xml");
// 创建工厂对象
//System.out.println(inputStream);
SqlSessionFactoryBuilder sqlSessionFactoryBuilder= new SqlSessionFactoryBuilder();
//System.out.println(sqlSessionFactoryBuilder);
SqlSessionFactory sessionFactory = sqlSessionFactoryBuilder.build(inputStream);
SqlSession sqlSession = sessionFactory.openSession();
//System.out.println(sqlSession);
List<Object> list = sqlSession.selectList("cn.aaa.Dao.Users.findAll");
for(Object o :list){
System.out.println(o);
}
}
}
标签:group 工具 aaa stc dea map puts out input
原文地址:https://www.cnblogs.com/-jian/p/11227963.html