MyBatis-Plus 关联查询

1、mapper 

public interface WmsSendOrderLinesMapper extends BaseMapperPlus<WmsSendOrderLinesMapper, WmsSendOrderLines, WmsSendOrderLinesVo> {
List<WmsSendOrderLines> getBindProductLines(@Param(Constants.WRAPPER) Wrapper<WmsSendOrderLinesBo> queryWrapper);
}

2、xml

<select id="getBindProductLines" resultType="com.smart.wms.send.bean.WmsSendOrderLines">
        select wsol.*, wp.bind_id
        from wms_send_order_lines wsol
        left join wms_product wp on wp.id = wsol.product_id
        ${ew.getCustomSqlSegment}
</select>

3、service

List<WmsSendOrderLines> getBindProductLines(WmsSendOrderLinesBo bo);

4、serviceImpl

@Override
    public List<WmsSendOrderLines> getBindProductLines(WmsSendOrderLinesBo bo) {
        return baseMapper.getBindProductLines(buildBindQueryWrapper(bo));
    }

private QueryWrapper<WmsSendOrderLinesBo> buildBindQueryWrapper(WmsSendOrderLinesBo bo) {
        QueryWrapper<WmsSendOrderLinesBo> lqw = Wrappers.query();
        lqw.eq(bo.getSendOrderId() != null, "wsol.send_order_id", bo.getSendOrderId());
        lqw.in(CollUtil.isNotEmpty(bo.getReturnOrderIds()),"wsol.returnOrderIds", bo.getReturnOrderIds());
        lqw.groupBy("wsol.return_order_id,wsol.item_bar_code");
        return lqw;
    }

5、 controller

   @RequestMapping("/test")
    public void test() {
        List<WmsSendOrderLines> orderLinesList = iWmsSendOrderLinesService.getBindProductLines(wmsSendOrderLinesBo);
    }