[type:refactor] added more test and fixed checkParam

[tian-pengfei]

1. added more integrated test for CryptorRequestPlugin

2. fix checkParam
   checkParam doesnt work because of GsonUtils wouldn't jsonization the field that of value is null or ""
   

   

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• 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 #4275 (15b253b) into master (459d7af) will decrease coverage by 0.01%.
The diff coverage is 23.07%.

@@             Coverage Diff              @@
##             master    #4275      +/-   ##
============================================
- Coverage     69.46%   69.44%   -0.02%     
  Complexity     7384     7384              
============================================
  Files           993      993              
  Lines         27999    28003       +4     
  Branches       2481     2483       +2     
============================================
- Hits          19449    19447       -2     
- Misses         7070     7071       +1     
- Partials       1480     1485       +5     

Impacted Files	Coverage Δ
...g/apache/shenyu/plugin/cryptor/utils/JsonUtil.java	61.53% <ø> (-1.51%)	⬇️
...pache/shenyu/plugin/cryptor/utils/CryptorUtil.java	37.50% <9.09%> (-24.04%)	⬇️
...u/plugin/cryptor/request/CryptorRequestPlugin.java	46.87% <100.00%> (ø)
...plugin/cryptor/response/CryptorResponsePlugin.java	53.33% <100.00%> (ø)
...controller/ShenyuClientHttpRegistryController.java	77.77% <0.00%> (-22.23%)	⬇️
...ruptor/RegisterClientServerDisruptorPublisher.java	52.94% <0.00%> (-11.77%)	⬇️
...henyu/admin/service/impl/UpstreamCheckService.java	62.66% <0.00%> (-1.34%)	⬇️
...henyu/plugin/grpc/resolver/ShenyuNameResolver.java	62.76% <0.00%> (-1.07%)	⬇️
...che/shenyu/sync/data/http/HttpSyncDataService.java	89.79% <0.00%> (+4.08%)	⬆️
...henyu/common/cache/MemorySafeWindowTinyLFUMap.java	81.66% <0.00%> (+8.33%)	⬆️

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