1、 EmployeeMapper.xml
<!--
配置查询:根据姓名模糊查询员工信息
-->
<select id="findByName" resultType="employee">
SELECT id,NAME,gender,idcard,nationid
FROM employee
WHERE 1=1
<if test="name != null">
<bind name="p_name" value="'%' + name + '%'"/>
and NAME LIKE #{p_name}
</if>
</select>
<!--
配置查询:多条件模糊查询员工信息
-->
<select id="findByCondition" resultType="employee">
SELECT id,NAME,gender,idcard,nationid
FROM employee
WHERE 1=1
<if test="id != 0">
and id = #{id}
</if>
<if test="name != null">
<bind name="p_name" value="'%' + name + '%'"/>
and NAME LIKE #{p_name}
</if>
<if test="idcard != null">
and idcard = #{idcard}
</if>
<if test="nationid != 0">
and nationid = #{nationid}
</if>
</select>
2. 데이터 계층 호출
public interface EmployeeMapper {
// 姓名查询员工信息
public List<Employee> findByName(String name);
// 多条件组合查询查询员工信息
public List<Employee> findByCondition(@Param("id") int id, @Param("name")String name, @Param("idcard")String idcard, @Param("nationid")int nationid);
public List<Employee> findByCondition(Employee employee);
}
3. 테스트
프로젝트 디렉토리: