多項(xiàng)選擇題

Given a header in an HTTP request:X-Retries:4
Which two retrieve the value of the header from a given HttpServletRequest request?()

A.Request.getHeader("X-Retries")
B.Request.getIntHeader("X-Retries")
C.Request.getRequestHeader("X-Retries")
D.Request.getHeaders("X-Retries").get(0)
E.Request.getRequestHeaders("X-Retries").get(0)


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2.單項(xiàng)選擇題Given an HttpSession session,a ServletRequest request,and a ServletContext context,which retrieves aURL to /WEB-INF/myconfig.xml within a web application?()

A.session.getResource("/WEB-INF/myconfig.xml")
B.request.getResource("/WEB-INF/myconfig.xml")
C.context.getResource("/WEB-INF/myconfig.xml")
D.getClass().getResource("/WEB-INF/myconfig.xml")

4.多項(xiàng)選擇題Which two are characteristics of the Service Locator pattern?()

A.It encapsulates component lookup procedures.
B.It increases source code duplication and decreases reuse.
C.It improves client performance by caching context and factory objects.
D.It degrades network performance due to increased access to distributed lookup services.

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