Polish #4674 & #4470

[mercyblitz]

To resovle issues: #4674 & #4470

[codecov-io]

Codecov Report

Merging #5033 into master will decrease coverage by 0.01%.
The diff coverage is 93.33%.

@@             Coverage Diff              @@
##             master    #5033      +/-   ##
============================================
- Coverage     63.97%   63.96%   -0.02%     
  Complexity      452      452              
============================================
  Files           769      769              
  Lines         33182    33181       -1     
  Branches       5232     5230       -2     
============================================
- Hits          21229    21224       -5     
- Misses         9532     9534       +2     
- Partials       2421     2423       +2

Impacted Files	Coverage Δ	Complexity Δ
...notation/ReferenceAnnotationBeanPostProcessor.java	87.61% <93.33%> (-0.12%)	0 <0> (ø)
...onfig/spring/extension/SpringExtensionFactory.java	80.48% <0%> (-4.88%)	0% <0%> (ø)
...he/dubbo/registry/multicast/MulticastRegistry.java	67.87% <0%> (-1.81%)	0% <0%> (ø)
...pache/dubbo/registry/support/AbstractRegistry.java	78.54% <0%> (-1.54%)	0% <0%> (ø)
.../dubbo/remoting/transport/netty4/NettyChannel.java	63.63% <0%> (-1.14%)	0% <0%> (ø)
...a/org/apache/dubbo/monitor/dubbo/DubboMonitor.java	89.71% <0%> (-0.94%)	16% <0%> (-1%)
.../rpc/protocol/dubbo/LazyConnectExchangeClient.java	58.82% <0%> (+2.35%)	0% <0%> (ø)	⬇️
...e/dubbo/remoting/transport/netty/NettyChannel.java	60.22% <0%> (+4.54%)	21% <0%> (+1%)	⬆️
.../apache/dubbo/qos/protocol/QosProtocolWrapper.java	70.73% <0%> (+4.87%)	0% <0%> (ø)	⬇️

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