myibatis 一对多配置的配置比较简单，需要resultMap 和collection 标签，二步就能搞定。
第一步：实体类
public class LampDeviceList extends DataEntity<LampDeviceList> {
private static final long serialVersionUID = 1L;
private String gatewayId;// gateway_id
private String gatewayName;// gateway_name
private List<LampDevice> deviceList = Lists.newArrayList();
public String getGatewayId() {
return gatewayId;
}
public void setGatewayId(String gatewayId) {
this.gatewayId = gatewayId;
}
public String getGatewayName() {
return gatewayName;
}
public void setGatewayName(String gatewayName) {
this.gatewayName = gatewayName;
}
public List<LampDevice> getDeviceList() {
return deviceList;
}
public void setDeviceList(List<LampDevice> deviceList) {
this.deviceList = deviceList;
}
}
关联的实体
public class LampDeviceList extends DataEntity<LampDeviceList> {
private static final long serialVersionUID = 1L;
private String gatewayId;// gateway_id
private String gatewayName;// gateway_name
private List<LampDevice> deviceList = Lists.newArrayList();
public String getGatewayId() {
return gatewayId;
}
public void setGatewayId(String gatewayId) {
this.gatewayId = gatewayId;
}
public String getGatewayName() {
return gatewayName;
}
public void setGatewayName(String gatewayName) {
this.gatewayName = gatewayName;
}
public List<LampDevice> getDeviceList() {
return deviceList;
}
public void setDeviceList(List<LampDevice> deviceList) {
this.deviceList = deviceList;
}
}
第二步：myibatis配置resultMap
<resultMap type="com.thinkgem.jeesite.modules.lamp.entity.LampDeviceList" id="lampDeviceList">
<id property="id" column="id"/>
<result property="gatewayId" column="gateway_id" />
<result property="gatewayName" column="gateway_name" />
<collection property="deviceList" ofType="com.thinkgem.jeesite.modules.lamp.entity.LampDevice">
<id property="id" column="deviceList.id"/>
<result property="deviceId" column="device_id" />
<result property="deviceName" column="device_name" />
<result property="shortName" column="short_name" />
<result property="deviceMac" column="device_mac" />
<result property="productId" column="product_id" />
<result property="meshName" column="mesh_name" />
<result property="factoryId" column="factory_id" />
</collection>
</reresultMap >
<select id="findDevicesList" resultMap="lampDeviceList">
SELECT
a.id AS "deviceList.id",
a.device_id AS "deviceId",
a.device_name AS "deviceName",
a.short_name AS "shortName",
a.device_mac AS "deviceMac",
a.product_id AS "productId",
a.factory_id AS "factoryId",
a.mesh_name AS "meshName",
g.id AS "id",
g.gateway_id AS "gatewayId",
g.gateway_name AS "gatewayName"
FROM lamp_gateway g
LEFT JOIN lamp_device a ON g.gateway_id = a.gateway_id
<where>
a.del_flag = #{DEL_FLAG_NORMAL}
</where>
<choose>
<when test="page !=null and page.orderBy != null and page.orderBy != ''">
ORDER BY ${page.orderBy}
</when>
<otherwise>
ORDER BY a.update_date DESC
</otherwise>
</choose>
</select>
说明：select查询的字段别名需要和resultMap里面的属性对应，同时不同有相同的别名。