示例：測試一對一關聯

程式清單：com.mapper.PersonMapper.java

package com.mapper;
import org.apache.ibatis.annotations.One;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.mapping.FetchType;
import com.po.Person;
public interface PersonMapper {
	@Select("select * from t_person where id=#{id}")
	@Results({
		@Result(id=true,column="id",property="id"),
		@Result(column="name",property="name"),
		@Result(column="cid",property="card",
		
 
[email protected](select="com.mapper.CardMapper.getCardById",
		fetchType=FetchType.EAGER))
	})
	Person getPersonById(Integer id);
}

程式清單：com.mapper.CardMapper.java

package com.mapper;
import org.apache.ibatis.annotations.Select;
import com.po.Card;
public interface CardMapper {
	@Select("select * from t_card where id=#{id}")
	Card getCardById(Integer id);
}
 

程式清單：com.po.Person.java

package com.po;
public class Person {
	private Integer id;
	private String name;
	private Card card;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Card getCard() {
		return card;
	}
	public void setCard(Card card) {
		this.card = card;
	}
	@Override
	public String toString() {
		return "Person [id=" + id + ", name=" + name + ", card=" + card + "]";
	}
}
 

程式清單：com.po.Card.java

package com.po;
public class Card {
	private Integer id;
	private String code;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getCode() {
		return code;
	}
	public void setCode(String code) {
		this.code = code;
	}
	@Override
	public String toString() {
		return "Card [id=" + id + ", code=" + code + "]";
	}
}

程式清單：/mybatis/src/mybatis-config.xml

<!-- 配置Mapper的位置 -->
	<mappers>
		<mapper class="com.mapper.PersonMapper"/>	
		<mapper class="com.mapper.CardMapper"/>			
	</mappers>

程式清單：com.dao.PersonDao.java

@Test
	public void getPersonById() throws IOException {
		session=getSqlSession();
		PersonMapper pm=session.getMapper(PersonMapper.class);
		Person person=pm.getPersonById(1);
		System.out.println(person);
	}

執行PersonDao的getPersonById()方法，控制檯顯示如下：