在properties里面配置多个
dubbo.registry.address=xxxxxx
dubbo.registry.aaa.address=xxxxxx
在xml里面配置
<dubbo:reference id="xx" interface="xxxx" version="1.0.0" registry="aaa"/>
就会报错 Too much registries found
实际上配置的dubbo.registry.aaa.address=xxxxxx 并不能根据aaa来匹配
![image](https://user-images.githubusercontent.com/54841788/68372350-9d4e9700-017b-11ea-95c9-425b66cce6fe.png)

org.apache.dubbo.config.AbstractInterfaceConfig.convertRegistryIdsToRegistries()
if (((List)tmpRegistries).size() > ids.length) {
                throw new IllegalStateException("Too much registries found, the registries assigned to this service are :" + this.registryIds + ", but got " + ((List)tmpRegistries).size() + " registries!");
            }
是不是应该需要在 tmpRegistries 里面根据 id 取对应的 Registries
protected Integer connections;
    /**
     * The layer of service providers
     */
    protected String layer;
    /**
     * The application info
     */
    protected ApplicationConfig application;
    /**
     * The module info
     */
    protected ModuleConfig module;
    /**
     * Registry centers
     */
    protected List<RegistryConfig> registries;
    /**
     * The method configuration
     */
    private List<MethodConfig> methods;
    protected String registryIds;
    // 
    protected String onconnect;
    /**
     * Dis
     */
    protected String ondisconnect;
    /**
     * The metrics configuration