dubbo 接口有多個實現時的配置方案

服務提供方（註解方式）：

1. xml配置：

<dubbo:annotation package="cn.com.xxx.business" />

2. java註解

@Service(group="refund",version="0.1.0")
public class RefundBusinessImpl extends RefundBusinessAbstract<RefundDO> implements RefundBusiness

@Service(group="refundGoods",version="0.1.0")
public class RefundGoodsBusinessImpl extends RefundBusinessAbstract<RefundGoodsDO> implements RefundBusiness

@Service(group="refundNotReturnGoods",version="0.1.0")
public class RefundNotReturnGoodsBusinessImpl extends RefundGoodsBusinessImpl implements RefundBusiness

服務消費方

<dubbo:reference interface="cn.com.xxx.business.RefundBusiness" group="refund" id="refundBusiness" version="0.1.0"/>
  <dubbo:reference interface="cn.com.xxx.business.RefundBusiness" group="refundGoods" id="refundGoodsBusiness" version="0.1.0"/>
  <dubbo:reference interface="cn.com.xxx.business.RefundBusiness" group="refundNotReturnGoods" id="refundNotReturnGoodsBusiness" version="0.1.0"/>這裏輸入代碼

後記：若是不使用dubbo，這樣的多種實現方式是沒有問題，bean id匹配無誤，按道理dubbo應該能夠經過spring來獲取匹配關係，不知爲什麼要單獨配置