Fix#1231

[hqq2023623]

What is the purpose of the change

Fix #1231

Brief changelog

Fix #1231

Verifying this change

Fix #1231

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[codecov-io]

Codecov Report

Merging #1242 into master will decrease coverage by 0.05%.
The diff coverage is 19.04%.

@@            Coverage Diff             @@
##           master    #1242      +/-   ##
==========================================
- Coverage   31.82%   31.77%   -0.06%     
==========================================
  Files         689      689              
  Lines       34454    34443      -11     
  Branches     6799     6793       -6     
==========================================
- Hits        10965    10943      -22     
- Misses      21576    21590      +14     
+ Partials     1913     1910       -3

Impacted Files	Coverage Δ
.../java/com/alibaba/dubbo/config/AbstractConfig.java	38.38% <0%> (ø)	⬆️
...ba/dubbo/registry/multicast/MulticastRegistry.java	44.44% <0%> (ø)	⬆️
.../alibaba/dubbo/rpc/protocol/http/HttpProtocol.java	0% <0%> (ø)	⬆️
.../dubbo/rpc/protocol/dubbo/filter/FutureFilter.java	56.56% <0%> (ø)	⬆️
...libaba/dubbo/rpc/protocol/dubbo/DubboProtocol.java	60.26% <0%> (ø)	⬆️
...va/com/alibaba/dubbo/cache/filter/CacheFilter.java	0% <0%> (ø)	⬆️
...ibaba/dubbo/remoting/telnet/codec/TelnetCodec.java	20.37% <0%> (+0.37%)	⬆️
.../dubbo/registry/integration/RegistryDirectory.java	0% <0%> (ø)	⬆️
...baba/dubbo/common/beanutil/JavaBeanDescriptor.java	50.76% <100%> (ø)	⬆️
...libaba/dubbo/common/extension/ExtensionLoader.java	70.98% <100%> (+0.26%)	⬆️
... and 8 more

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[chickenlj]

There's some conflicts with some other PRs.
As this is caused by a delayed process of this PR, i think i will handle with it.