zrlw opened a new issue #8821:
URL: https://github.com/apache/dubbo/issues/8821
### Environment
* Dubbo version: 3.0
通常传给parseObject的raw config入参是yml格式的字符串，如下面日志所示：
```
[16/09/21 02:16:21:021 UTC] ZookeeperDynamicConfiguration-thread-1 INFO
integration.AbstractConfiguratorListener: [DUBBO] Notification of overriding
rule, change type is: MODIFIED, raw config content is:
# Execute on governance-appoverride-provider.
# This will take effect on all services in governance-appoverride-provider.
---
configVersion: v2.7
scope: application
key: governance-appoverride-provider
enabled: true
configs:
- addresses: ["0.0.0.0:20880"]
side: provider
parameters:
weight: 0
- addresses: ["0.0.0.0:20881"]
side: provider
parameters:
weight: 100
..., dubbo version: 3.0.3-SNAPSHOT, current host: 172.21.0.3
```
但有时传入的内容却是个IP地址串，如下面日志所示的"172.21.0.5"，此时就会因为类型不一致而抛异常：
```
[16/09/21 02:16:21:021 UTC] ZookeeperDynamicConfiguration-thread-1 INFO
integration.AbstractConfiguratorListener: [DUBBO] Notification of overriding
rule, change type is: MODIFIED, raw config content is:
172.21.0.5, dubbo version: 3.0.3-SNAPSHOT, current host: 172.21.0.4
[16/09/21 02:16:21:021 UTC] ZookeeperDynamicConfiguration-thread-1 ERROR
integration.AbstractConfiguratorListener: [DUBBO] Failed to parse raw dynamic
config and it will not take effect, the raw config is: 172.21.0.5, dubbo
version: 3.0.3-SNAPSHOT, current host: 172.21.0.4
java.lang.ClassCastException: java.lang.String cannot be cast to
java.util.Map
at
org.apache.dubbo.rpc.cluster.configurator.parser.ConfigParser.parseObject(ConfigParser.java:76)
at
org.apache.dubbo.rpc.cluster.configurator.parser.ConfigParser.parseConfigurators(ConfigParser.java:51)
at
org.apache.dubbo.registry.integration.AbstractConfiguratorListener.genConfiguratorsFromRawRule(AbstractConfiguratorListener.java:107)
at
org.apache.dubbo.registry.integration.AbstractConfiguratorListener.process(AbstractConfiguratorListener.java:95)
at
org.apache.dubbo.configcenter.support.zookeeper.CacheListener.lambda$dataChanged$1(CacheListener.java:107)
at
java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:895)
at
java.util.concurrent.CopyOnWriteArraySet.forEach(CopyOnWriteArraySet.java:404)
at
org.apache.dubbo.configcenter.support.zookeeper.CacheListener.dataChanged(CacheListener.java:107)
at
org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient$NodeCacheListenerImpl.nodeChanged(CuratorZookeeperClient.java:345)
at
org.apache.curator.framework.recipes.cache.NodeCache$4.apply(NodeCache.java:326)
at
org.apache.curator.framework.recipes.cache.NodeCache$4.apply(NodeCache.java:320)
at
org.apache.curator.framework.listen.ListenerContainer$1.run(ListenerContainer.java:93)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
```
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