[type:bug] fix bug issue #4487.

[yunlongn]

Fixes #4487

Make sure that:

• You have read the contribution guidelines.
• You submit test cases (unit or integration tests) that back your changes.
• Your local test passed ./mvnw clean install -Dmaven.javadoc.skip=true.

[codecov-commenter]

Codecov Report

Merging #4509 (b54ac05) into master (a235b46) will increase coverage by 0.08%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master    #4509      +/-   ##
============================================
+ Coverage     67.98%   68.06%   +0.08%     
- Complexity     7574     7577       +3     
============================================
  Files          1029     1029              
  Lines         29390    29401      +11     
  Branches       2655     2659       +4     
============================================
+ Hits          19981    20013      +32     
+ Misses         7821     7801      -20     
+ Partials       1588     1587       -1     

Impacted Files	Coverage Δ
...apache/shenyu/common/utils/UpstreamCheckUtils.java	15.00% <0.00%> (ø)

... and 19 files with indirect coverage changes

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