A developer is designing a multi-tier web application and discovers a need to log each incoming client request. 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
- F、 Model-View-Controller
正确答案:C
答案解析:有
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