1Z0-858 試験問題を無料オンラインアクセス

Click the Exhibit button.
A session-scoped attribute, product, is stored by a servlet. That servlet then forwards to a JSP page. This attribute holds an instance of the com.example.Product class with a name property of "The Matrix" and price property of 39.95.
Given the JSP page code snippet:
1.<jsp:useBean id='product' class='com.example.Product'>
2.<jsp:setProperty name='product' property='price' value='49.95'/>
3.</jsp:useBean>
4.<%= product.getName() %> costs <%= product.getPrice() %> What is the response output of this JSP page code snippet?

• A.The Matrix costs 39.95
• B.The Matrix costs 0.0
• C.Default costs 0.0
• D.Default costs 49.95
• E.The Matrix costs 49.95
• F.Default costs 39.95

You want to create a filter for your web application and your filter will implement javax.servlet.Filter.
Which two statements are true? (Choose two.)

• A.Your filter class must implement an init method and a destroy method.
• B.Your filter class must also implement javax.servlet.FilterChain.
• C.The method that your filter invokes on the object it received that implements javax.servlet.FilterChain can invoke either another filter or a servlet.
• D.Your filter class must implement a doFilter method that takes, among other things, an HTTPServletRequest object and an HTTPServletResponse object.
• E.When your filter chains to the next filter, it should pass the same arguments it received in its doFilter method.

Which interface must a class implement so that instances of the class are notified after any object is added to a session?

• A.javax.servlet.http.HttpSessionAttributeListener
• B.javax.servlet.http.HttpSessionValueListener
• C.javax.servlet.http.HttpSessionListener
• D.javax.servlet.http.HttpSessionBindingListener

DRAG DROP
Click the Task button.
Place the XML elements in the web application deployment descriptor solution to configure a servlet context event listener named com.example.MyListener.

正解：

Which three are true about the HttpServletRequestWrapper class? (Choose three.)

• A.The HttpServletRequestWrapper is an example of the Decorator pattern.
• B.An HttpServletRequestWrapper may modify the header of a request within an object implementing the javax.servlet.Filter interface.
• C.The HttpServletRequestWrapper can be used to extend the functionality of a servlet request.
• D.A subclass of HttpServletRequestWrapper CANNOT modify the behavior of the getReader method.
• E.An HttpServletRequestWrapper CANNOT be used on the request passed to the RequestDispatcher.include method.
• F.An HttpServletRequestWrapper may be used only by a class implementing the javax.servlet.Filter interface.