此项目是Mybatis的学习项目，只是用来了解加深对Mybatis的了解的，仅简单实现了Mybatis。具体内容见我的学习笔记
使用方法如下：
resources下编写SqlMapConfig.xml配置文件
<configuration>
<!-- 配置数据源-->
<dataSource>
<property name="driverClass" value="com.mysql.cj.jdbc.Driver"></property>
<property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF8&useSSL=false&serverTimezone=Asia/Shanghai"></property>
<property name="username" value="root"></property>
<property name="password" value="root"></property>
</dataSource>
<!-- 存放mapper.xml的全路径-->
<mapper resource="UserMapper.xml"></mapper>
</configuration>resources下编写UserMapper.xml配置文件
<mapper namespace="user">
<!-- sql的唯一标识：namespace和id组成 ：statementId -->
<select id="selectList" resultType="com.iorm.pojo.User" >
select * from user
</select>
<!-- User user = new User()
user.setId(1);
-->
<select id ="selectOne" resultType="com.iorm.pojo.User" paramType="com.iorm.pojo.User">
select * from user where id = #{id} and username = #{username}
</select>
</mapper>测试方法的编写
/**
* 测试类 测试orm框架
*/
public class Test1 {
@Test
public void test() throws PropertyVetoException, DocumentException, SQLException, IntrospectionException, NoSuchFieldException, ClassNotFoundException, InvocationTargetException, IllegalAccessException, InstantiationException {
//测试第一版orm
InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
SqlSession sqlSession = sqlSessionFactory.openSqlSession();
User user = new User();
user.setId(1);
user.setUsername("张老师");
// 测试单个
// User userSelect = sqlSession.selectOne("user.selectOne",user);
// System.out.println(userSelect.toString());
// 测试所有
// List<Object> selectList = sqlSession.selectList("user.selectList");
// selectList.stream().forEach(System.out::println);
// 测试代理
//测试第二版
UserDao userDao = sqlSession.getMapper(UserDao.class);
List<User> all = userDao.findAll();
if (all == null){
System.out.println("all为null");
}else {
System.out.println(all.size());
}
all.stream().forEach(System.out::println);
User byCondition = userDao.findByCondition(user);
System.out.println(byCondition);
}
}
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