返回一條紀錄的map

package com.atChina.dao;import java.util.List; import java.util.Map;import org.apache.ibatis.annotations.MapKey; import org.apache.ibatis.annotations.Param;import com.atChina.bean.Employee;public interface EmployeeMapper {// 返回一條紀錄的map, key是列名, value是對應的值public Map<String,Object> getEmpByDepno(Integer depno); }

?sql配置文件

<selectid="getEmpByDepno" resultType="map" >select * from DEPTTEST where deptno = #{deptno}</select>

測試方法:

@Testpublic void test22() throws IOException {String resource = "mybatis-config.xml";InputStream inputStream = Resources.getResourceAsStream(resource);SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);SqlSession openSession = sqlSessionFactory.openSession();try{// 命名空間.id,這樣別的配置文件里有同名的id,程序也不報錯EmployeeMapper em = openSession.getMapper(EmployeeMapper.class);System.out.println(em.getClass()); // 動態代理類Map<String, Object> map = em.getEmpByDepno(10);System.out.println(map+" "+map.size());}finally{// 關閉openSession.close();}}

?

?返回多條紀錄的map

package com.atChina.dao;import java.util.List; import java.util.Map;import org.apache.ibatis.annotations.MapKey; import org.apache.ibatis.annotations.Param;import com.atChina.bean.Employee;public interface EmployeeMapper {// 返回多條紀錄的map, key是主鍵, value是封裝后的javaBean@MapKey("deptno") // @Mapkey("告訴mybatis使用javaBean的某個屬性的值作為map的key")public Map<String,Employee> getEmpByDepnos(Integer depno); }

?

<selectid="getEmpByDepnos" resultType="com.atChina.bean.Employee" >select * from DEPTTEST where deptno >= #{deptno}</select> @Testpublic void test23() throws IOException {String resource = "mybatis-config.xml";InputStream inputStream = Resources.getResourceAsStream(resource);SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);SqlSession openSession = sqlSessionFactory.openSession();try{// 命名空間.id,這樣別的配置文件里有同名的id,程序也不報錯EmployeeMapper em = openSession.getMapper(EmployeeMapper.class);System.out.println(em.getClass()); // 動態代理類Map<String, Employee> map = em.getEmpByDepnos(10);System.out.println(map+" "+map.size());}finally{// 關閉openSession.close();}}

?

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