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
} else {
            String[] ids = COMMA_SPLIT_PATTERN.split(registryIds);
            List<RegistryConfig> tmpRegistries = CollectionUtils.isNotEmpty(registries) ? registries : new ArrayList<>();
            Arrays.stream(ids).forEach(id -> {
                if (tmpRegistries.stream().noneMatch(reg -> reg.getId().equals(id))) {
                    Optional<RegistryConfig> globalRegistry = ApplicationModel.getConfigManager().getRegistry(id);
                    if (globalRegistry.isPresent()) {
                        tmpRegistries.add(globalRegistry.get());
                    } else {
                        RegistryConfig registryConfig = new RegistryConfig();
                        registryConfig.setId(id);
                        registryConfig.refresh();
                        tmpRegistries.add(registryConfig);
                    }
                }
            });
            if (tmpRegistries.size() > ids.length) {
                throw new IllegalStateException("Too much registries found, the registries assigned to this service " +
                        "are :" + registryIds + ", but got " + tmpRegistries.size() + " registries!");
            }
            setRegistries(tmpRegistries);
        }
    }
    protected void computeValidRegistryIds() {
        if (StringUtils.isEmpty(getRegistryIds())) {
            if (getApplication() != null && StringUtils.isNotEmpty(getApplication().getRegistryIds())) {
                setRegistryIds(getApplication().getRegistryIds());
            }
        }
    }