Java MyBatis 关系映射 一对一关系

package com.geo.test; import java.io.IOException; import java.io.InputStream; import java.util.List; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import com.geo.dao.OrderDao; import com.geo.dao.UserDao; import com.geo.model.Order; import com.geo.model.User; public class Test { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub //1.读取配置文件 InputStream in = Resources.getResourceAsStream("resources/SqlMapConfig.xml"); //2.创建 SqlSessionFactory 的构建者对象 SqlSessionFactoryBuilder builder = new SqlSessionFactoryBuilder(); //3.使用构建者创建工厂对象 SqlSessionFactory SqlSessionFactory factory = builder.build(in); //4.使用 SqlSessionFactory 生产 SqlSession 对象 SqlSession session = factory.openSession(); //5.使用 SqlSession 创建 dao 接口的代理对象 OrderDao orderDao = session.getMapper(OrderDao.class); List<Order> orderlist = orderDao.findAllOrders(); for (Order order : orderlist) { System.out.println(order); } //2.创建Mapper代理对象 UserDao userDao = session.getMapper(UserDao.class); //3.调用方法 List<User> list = userDao.findAllUsers(); for (User user : list) { System.out.println(user); } } }