Issue 1:
I have searched the issues of this repository and believe that this is not a duplicate.

I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

Dubbo version: 2.7.4.1

Operating System version: win10

Java version: 1.8

Steps to reproduce this issue

zookeeper客户端连接服务时采用的时异步的方式，当连接时间所需较长时，导致使用Stat监听节点时报未连接异常

自己尝试的解决方案：https://blog.csdn.net/fate_destiny/article/details/103066932

Actual Result

Exception in thread "main" java.lang.IllegalStateException: zookeeper not connected
at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.<init>(CuratorZookeeperClient.java:83)
at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperTransporter.createZookeeperClient(CuratorZookeeperTransporter.java:26)
at org.apache.dubbo.remoting.zookeeper.support.AbstractZookeeperTransporter.connect(AbstractZookeeperTransporter.java:68)
at org.apache.dubbo.remoting.zookeeper.ZookeeperTransporter$Adaptive.connect(ZookeeperTransporter$Adaptive.java)
at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfiguration.<init>(ZookeeperDynamicConfiguration.java:62)
at org.apache.dubbo.configcenter.support.zookeeper.ZookeeperDynamicConfigurationFactory.createDynamicConfiguration(ZookeeperDynamicConfigurationFactory.java:37)
at org.apache.dubbo.configcenter.AbstractDynamicConfigurationFactory.getDynamicConfiguration(AbstractDynamicConfigurationFactory.java:33)
at org.apache.dubbo.config.AbstractInterfaceConfig.getDynamicConfiguration(AbstractInterfaceConfig.java:315)
at org.apache.dubbo.config.AbstractInterfaceConfig.prepareEnvironment(AbstractInterfaceConfig.java:290)
at org.apache.dubbo.config.AbstractInterfaceConfig.startConfigCenter(AbstractInterfaceConfig.java:280)
at org.apache.dubbo.config.AbstractInterfaceConfig.lambda$null$7(AbstractInterfaceConfig.java:636)
at java.util.Optional.orElseGet(Optional.java:267)
at org.apache.dubbo.config.AbstractInterfaceConfig.lambda$useRegistryForConfigIfNecessary$8(AbstractInterfaceConfig.java:620)
at java.util.Optional.ifPresent(Optional.java:159)
at org.apache.dubbo.config.AbstractInterfaceConfig.useRegistryForConfigIfNecessary(AbstractInterfaceConfig.java:618)
at org.apache.dubbo.config.AbstractInterfaceConfig.checkRegistry(AbstractInterfaceConfig.java:208)
at org.apache.dubbo.config.ServiceConfig.checkAndUpdateSubConfigs(ServiceConfig.java:303)
at org.apache.dubbo.config.ServiceConfig.export(ServiceConfig.java:370)
at org.apache.dubbo.config.spring.ServiceBean.export(ServiceBean.java:336)
at org.apache.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:114)
at org.apache.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:60)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:393)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:347)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:883)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93)
at Provider.main(Provider.java:5)
Caused by: java.lang.IllegalStateException: zookeeper not connected
at org.apache.dubbo.remoting.zookeeper.curator.CuratorZookeeperClient.<init>(CuratorZookeeperClient.java:80)
... 30 more

Issue 2:
I have searched the issues of this repository and believe that this is not a duplicate.

I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

Dubbo version: 2.7.5

Operating System version: MAC OS X

Java version: Hotspot 1.8

Steps to reproduce this issue

1.define method

void add(Map<Integer, Student> map)

2.config

<dubbo:protocol name="dubbo" port="20880" serialization="fastjson" />

3.call method add.

Pls. provide [GitHub address] to reproduce this issue.

Expected Result

provider deserialize Map<Integer, Student> ok, map's value is Student type.

Actual Result

Map's value is JSONObject type.

Because in DecodeableRpcInvocation#decode(Channel channel, InputStream input),

pts = methodDescriptor.getParameterClasses(), not ParameterizedType, in this case, fastjson unable parse Map's value is Student.

If there is an exception, please attach the exception trace:

Just put your stack trace here!