logback如何去掉DubboMonitor烦人的INFO日志

-Ddubbo.application.logger=slf4j

System.setProperty("dubbo.application.logger","slf4j");

<logger name="com.alibaba.dubbo" additivity="true" level="ERROR" />

@Component  
public class InitService implements InitializingBean {    
    @Override  
    public void afterPropertiesSet() throws Exception {  
     System.setProperty("dubbo.application.logger","slf4j");
    }    
}

<configuration> 
<logger name="org.apache.zookeeper.ClientCnxn" level="info" />  
</configuration>