多选题A developer is designing a multi-tier web application and discovers a need to log each incoming clientrequest. Which two patterns， taken independently， provide a solution for this problem？（）ATransfer ObjectBService LocatorCFront ControllerDIntercepting
题目
多选题
A developer is designing a multi-tier web application and discovers a need to log each incoming clientrequest. Which two patterns， taken independently， provide a solution for this problem？（）
A
Transfer Object
B
Service Locator
C
Front Controller
D
Intercepting Filter
E
Business Delegate