mybatis 返回list<object>（转）

pojo 类:

package com.mymaven.mybatisdemo.po;


public class Department {

    private String dp_id;
    private String dp_name;
    private String cost_center;


    public String getDp_id() {
        return dp_id;
    }

    public void setDp_id(String dp_id) {
        this.dp_id = dp_id;
    }

    public String getDp_name() {
        return dp_name;
    }

    public void setDp_name(String dp_name) {
        this.dp_name = dp_name;
    }

    public String getCost_center() {
        return cost_center;
    }

    public void setCost_center(String cost_center) {
        this.cost_center = cost_center;
    }

    public Department() {
        super();

    }
}

mapper接口:

public interface DepartmentMapper {
    //查询返回一个list
    public List<Department> queryAllDepartment();


}

mapper对应的配置文件:

<!-- 此处namespace需要指定dao接口 -->
<mapper namespace="com.mymaven.mybatisdemo.dao.DepartmentMapper">
    <!--配置一个resultMap 指定返回的类型 -->
    <resultMap id="departMent" type="Department">
        <id column="dp_id" property="dp_id" />
        <result column="dp_name" property="dp_name" />
        <result column="cost_center" property="cost_center" />
    </resultMap>


    <!-- 返回一个list的写法 -->
    <select id="queryAllDepartment"  resultMap="departMent" >
        select * from t_department

    </select>



</mapper>