多选题Which three are true about servlet filters？（）AA filter must implement the destroy method.BA filter must implement the doFilter method.CA servlet may have multiple filters associated with it.DA servlet that is to have a filter applied to it must impleme

题目
多选题
Which three are true about servlet filters？（）
A

A filter must implement the destroy method.

B

A filter must implement the doFilter method.

C

A servlet may have multiple filters associated with it.

D

A servlet that is to have a filter applied to it must implement the javax.servlet.FilterChain interface.

E

A filter that is part of a filter chain passes control to the next filter in the chain by invoking the FilterChain.forward method.

相似考题

1.Giventhewebapplicationdeploymentdescriptorelements：11.<filter>12.<filter-name>ParamAdder</filter-name>13.<filter-class>com.example.ParamAdder</filter-class>14.</filter>...24.<filter-mapping>25.<filter-name>ParamAdder</filter-name>26.<servlet-name>MyServlet</servlet-name>27.<!--insertelementhere-->28.</filter-mapping>Whichelement，insertedatline27，causestheParamAdderfiltertobeappliedwhenMyServletisinvokedbyanotherservletusingtheRequestDispatcher.includemethod？（）A.<include/>B.<dispatcher>INCLUDE</dispatcher>C.<dispatcher>include</dispatcher>D.<filter-condition>INCLUDE</filter-condition>E.<filter-condition>include</filter-condition>

2.以下有关自定义servlet、filter错误的是（）A、是在uap项目的weB.xml中定义servlet、filterB、在模块中定义servlet、filter时，首先是模块的启动顺序决定了模块中所有servlet、filter的顺序C、如果同一个模块中servlet、filter定义在不同的文件中，文件被加载解析的顺序也会影响模块servlet、filter的顺序D、模块中同一个配置文件中定义的servlet、filter按被定义的前后顺序处理

3.在JAVA EE中，使用Servlet过滤器时，需要在web.xml通过（）元素将过滤器映射到Web资源。A、〈filter〉B、〈filter-mapping〉C、〈servlet〉D、〈servlet-mapping〉

4.Youwanttocreateafilterforyourwebapplicationandyourfilterwillimplementjavax.servlet.Filter.Which twostatementsaretrue?()A.Yourfilterclassmustimplementaninitmethodandadestroymethod.B.Yourfilterclassmustalsoimplementjavax.servlet.FilterChain.C.Whenyourfilterchainstothenextfilter，itshouldpassthesameargumentsitreceivedinitsdoFiltermethod.D.Themethodthatyourfilterinvokesontheobjectitreceivedthatimplementsjavax.servlet.FilterChaincaninvokeeitheranotherfilteroraservlet.E.YourfilterclassmustimplementadoFiltermethodthattakes，amongotherthings，anHTTPServletRequestobjectandanHTTPServletResponseobject.

更多“多选题Which three are true about servlet filters？（）AA filter must implement the destroy method.BA filter must implement the doFilter method.CA servlet may have multiple filters associated with it.DA servlet that is to have a filter applied to it must impleme”相关问题

  • 第1题：

    Given the web application deployment descriptor elements： 11. 12.ParamAdder 13.com.example.ParamAdder 14.... 24. 25.ParamAdder 26.MyServlet 27. 28. Which element， inserted at line 27，causes the ParamAdder filter to be applied when MyServlet is invokedby another servlet using the RequestDispatcher.include method？（）

    • A、<include/>
    • B、<dispatcher>INCLUDE</dispatcher>
    • C、<dispatcher>include</dispatcher>
    • D、<filter-condition>INCLUDE</filter-condition>
    • E、<filter-condition>include</filter-condition>

    正确答案:B

  • 第2题：

    Which interface must a class implement to be informed of a session creation event？（）

    • A、 javax.servlet.http.HttpSessionListener
    • B、 javax.servlet.http.HttpSessionBindingListener
    • C、 javax.servlet.http.HttpSessionCreationListener
    • D、 javax.servlet.http.HttpSessionActivationListener

    正确答案:A

  • 第3题：

    Which is the true choice about the web container request processing model（）？

    • A、 The init method on a filter is called the first time a servlet mapped to that filter is invoked
    • B、 A filter defined for a servlet must always forward control to the next resource in the filter chain.
    • C、 Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file
    • D、 If the init method on a filter throws an UnavailableException， then the container will make no further attempt to execute it

    正确答案:C

  • 第4题：

    Which interface must a session attribute implement if it needs to be notified when a web container persistsa session？（）

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

    正确答案:D

  • 第5题：

    Which three are true about servlet filters？（）

    • A、A filter must implement the destroy method.
    • B、A filter must implement the doFilter method.
    • C、A servlet may have multiple filters associated with it.
    • D、A servlet that is to have a filter applied to it must implement the javax.servlet.FilterChain interface.
    • E、A filter that is part of a filter chain passes control to the next filter in the chain by invoking the FilterChain.forward method.

    正确答案:A,B,C

  • 第6题：

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

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

    正确答案:A,D

  • 第7题：

    多选题
    Which three are true about servlet filters？（）
    A

    A filter must implement the destroy method.

    B

    A filter must implement the doFilter method.

    C

    A servlet may have multiple filters associated with it.

    D

    A servlet that is to have a filter applied to it must implement the javax.servlet.FilterChain interface.

    E

    A filter that is part of a filter chain passes control to the next filter in the chain by invoking the FilterChain.forward method.


    正确答案： E,A
    解析： 暂无解析

  • 第8题：

    单选题
    Which element is the parent of the  tag in the web application deployment descriptor？ （）
    A

     <web-app> 

    B

     <filters> 

    C

     <servlet> 

    D

     <filter-list> 


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    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.HttpSessionListener

    B

     javax.servlet.http.HttpSessionValueListener

    C

     javax.servlet.http.HttpSessionBindingListener

    D

     javax.servlet.http.HttpSessionAttributeListener


    正确答案： B
    解析： 暂无解析

  • 第10题：

    多选题
    A custom JSP tag must be able to support an arbitrary number of attributes whose names are unknown when the tag class is designed.  Which two are true？ （）
    A

    A  element in the echo tag LTD must have the value JSP

    B

    The echo tag handler must define the setAttribute （String key， String value） method

    C

    The true element must appear in the echo tag TLD

    D

    The class implementing the echo tag handler must implement the javax.sevlet.jsp.tagext.IterationTag interface

    E

    The class implementing the echo tag handler must implement the javax.sevlet.jsp.tagext.DynamicAttributes interface


    正确答案： E,B
    解析： 暂无解析

  • 第11题：

    多选题
    Which the three are true about servlet filters？（）
    A

    A filter must implement the destroy method

    B

    A filter must implement the doFilter method

    C

    A servlet may have multiple filters associated with it

    D

    A servlet that is to have a filter applied to it must implement the javax.servlet.FilterChain  interface

    E

    A filter that is part of a filter chain passes control to the next filter in the chain by invoking the filterChain forward method

    F

    For each  element in the web application deployment descriptor， multiple instances of a filter may be created by the web container


    正确答案： E,B
    解析： 暂无解析

  • 第12题：

    单选题
    Which interface must a session attribute implement if it needs to be notified when a web container persistsa session？（）
    A

    javax.servlet.http.HttpSessionListener

    B

    javax.servlet.http.HttpSessionBindingListener

    C

    javax.servlet.http.HttpSessionAttributeListener

    D

    javax.servlet.http.HttpSessionActivationListener


    正确答案： C
    解析： 暂无解析

  • 第13题：

    Which the three are true about servlet filters？（）

    • A、 A filter must implement the destroy method
    • B、 A filter must implement the doFilter method
    • C、 A servlet may have multiple filters associated with it
    • D、 A servlet that is to have a filter applied to it must implement the javax.servlet.FilterChain  interface
    • E、 A filter that is part of a filter chain passes control to the next filter in the chain by invoking the filterChain forward method
    • F、 For each  element in the web application deployment descriptor， multiple instances of a filter may be created by the web container

    正确答案:A,B,C

  • 第14题：

    关于Servlet Filter，下列说法正确的有（） 

    • A、Filter其实就是一个Servlet
    • B、Filter可以产生response
    • C、Filter可以在Servlet被调用之前截获request
    • D、Filter可以哟活过来处理统一认证，过滤不雅字句等

    正确答案:C,D

  • 第15题：

    Which element is the parent of the  tag in the web application deployment descriptor？ （）

    • A、 <web-app> 
    • B、 <filters> 
    • C、 <servlet> 
    • D、 <filter-list> 

    正确答案:A

  • 第16题：

    Given a Filter class definition with this method： 21.public void doFilter（ServletRequest request， 22.ServletResponse response， 23.FilterChain chain） 24.throws ServletException， IOException { 25.// insert code here26. } Which should you insert at line 25 to properly invoke the next filter in the chain，or the target servlet if thereare no more filters？（）

    • A、chain.forward（request， response）；
    • B、chain.doFilter（request， response）；
    • C、request.forward（request， response）；
    • D、request.doFilter（request， response）；

    正确答案:B

  • 第17题：

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

    正确答案:C

  • 第18题：

    Which is true about the web container request processing model？（）

    • A、The init method on a filter is called the first time a servlet mapped to that filter is invoked.
    • B、A filter defined for a servlet must always forward control to the next resource in the filter chain.
    • C、Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file.
    • D、If the init method on a filter throws an UnavailableException， then the container will make no further attempt to execute it.

    正确答案:C

  • 第19题：

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

    Your filter class must implement an init method and a destroy method.

    B

    Your filter class must also implement javax.servlet.FilterChain.

    C

    When your filter chains to the next filter， it should pass the same arguments it received in its doFiltermethod.

    D

    The method that your filter invokes on the object it received that implements javax.servlet.FilterChaincan invoke either another filter or a servlet.

    E

    Your filter class must implement a doFilter method that takes， among other things， anHTTPServletRequest object and an HTTPServletResponse object.


    正确答案： A,B
    解析： 暂无解析

  • 第20题：

    单选题
    Which is true about the web container request processing model？（）
    A

    The init method on a filter is called the first time a servlet mapped to that filter is invoked.

    B

    A filter defined for a servlet must always forward control to the next resource in the filter chain.

    C

    Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file.

    D

    If the init method on a filter throws an UnavailableException， then the container will make no further attempt to execute it.


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    Given the web application deployment descriptor elements： 11. 12.ParamAdder 13.com.example.ParamAdder 14.... 24. 25.ParamAdder 26.MyServlet 27. 28. Which element， inserted at line 27，causes the ParamAdder filter to be applied when MyServlet is invokedby another servlet using the RequestDispatcher.include method？（）
    A

    <include/>

    B

    <dispatcher>INCLUDE</dispatcher>

    C

    <dispatcher>include</dispatcher>

    D

    <filter-condition>INCLUDE</filter-condition>

    E

    <filter-condition>include</filter-condition>


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    Which interface must a class implement to be informed of a session creation event？（）
    A

     javax.servlet.http.HttpSessionListener

    B

     javax.servlet.http.HttpSessionBindingListener

    C

     javax.servlet.http.HttpSessionCreationListener

    D

     javax.servlet.http.HttpSessionActivationListener


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    在JAVA EE中，使用Servlet过滤器时，需要在web.xml通过（）元素将过滤器映射到Web资源。
    A

    〈filter〉

    B

    〈filter-mapping〉

    C

    〈servlet〉

    D

    〈servlet-mapping〉


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    Which interface must a class implement so that instances of the class are notified after any object is addedto a session？（）
    A

    javax.servlet.http.HttpSessionListener

    B

    javax.servlet.http.HttpSessionValueListener

    C

    javax.servlet.http.HttpSessionBindingListener

    D

    javax.servlet.http.HttpSessionAttributeListener


    正确答案： B
    解析： 暂无解析

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