多选题Which two are characteristics of the Intercepting Filter pattern？（）Ait provides centralized request handling for incoming requests.BIt forces resource authentication to be distributed across web components.CIt reduces coupling between presentation-tier clients and underlying business services.DIt can be added and removed unobtrusively， without requiring changes to existing code.EIt allows preprocessing and postprocessing on the incoming requests and outgoing responses.
多选题
Which two are characteristics of the Intercepting Filter pattern？（）
A
it provides centralized request handling for incoming requests.
B
It forces resource authentication to be distributed across web components.
C
It reduces coupling between presentation-tier clients and underlying business services.
D
It can be added and removed unobtrusively， without requiring changes to existing code.
E
It allows preprocessing and postprocessing on the incoming requests and outgoing responses.
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