在dubbo中，当一个注册中心要注册2个相同的接口实现时，比如读写分离的接口，或者开发环境和测试环境用同一个注册中心时，可以使用group配置实现相同的接口注册。 例如下：
1. dubbo服务提供者xml配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<dubbo:application name="dubbo-consumer" />
<dubbo:registry address="zookeeper://127.0.0.1:2181" />
<dubbo:consumer check="false" />
<dubbo:reference id="userServiceOne" interface="com.UserService" group="userServiceOne" check="false"/>
<dubbo:reference id="userServiceTwo" interface="com.UserService" group="userServiceTwo" check="false"/>
</beans>
2.dubbo服务分组配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<dubbo:application name="dubbo-provider"/>
<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
<dubbo:provider cluster="failfast"/>
<dubbo:protocol name="dubbo" port="20880" />
<dubbo:service interface="com.UserService" ref="userServiceOne" protocol="dubbo" group="userServiceOne"/>
<dubbo:service interface="com.UserService" ref="userServiceTwo" protocol="dubbo" group="userServiceTwo"/>
<bean id="userServiceOne" class="com.dubbo.provider.service.impl.UserServiceOneImpl"/>
<bean id="userServiceTwo" class="com.dubbo.provider.service.impl.UserServiceTwoImpl"/>
</beans>
3.测试代码
package com
.test
;
import com
.UserService
;
import org
.junit
.runner
.RunWith
;
import org
.springframework
.beans
.factory
.annotation
.Autowired
;
import org
.springframework
.test
.context
.ContextConfiguration
;
import org
.springframework
.test
.context
.junit4
.SpringJUnit4ClassRunner
;
@RunWith(SpringJUnit4ClassRunner
.class)
@ContextConfiguration("classpath:dubbo-consumer.xml")
public class Test {
@Autowired
private UserService userServiceOne
;
@Autowired
private UserService userServiceTwo
;
@org.junit
.Test
public void consumerTest(){
System
.out
.println(userServiceOne
.sayHello("ly"));
System
.out
.println(userServiceTwo
.sayHello("ly"));
}
}
4.源代码下载
https://github.com/haozhi-ly/dubbo-demo
