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Servlet的基本架构

public class ServletName extends HttpServlet {

public void doPost(HttpServletRequest request, HttpServletResponse response) throws

ServletException, IOException {

}

public void doGet(HttpServletRequest request, HttpServletResponse response) throws

ServletException, IOException {

}

}

1、用String的方法将数据类型转换为String。


参考答案

更多 “ Servlet的基本架构public class ServletName extends HttpServlet {public void doPost(HttpServletRequest request, HttpServletResponse response) throwsServletException, IOException {}public void doGet(HttpServletRequest request, HttpServletResponse response) throwsServletException, IOException {}}1、用String的方法将数据类型转换为String。 ” 相关考题
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考题 Given: 3.class MyServlet extends HttpServlet { 4.public void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException,IOException { 5.// servlet code here ... 26.} 27.} If the DD contains a single security constraint associated with MyServlet and its only  tagsand  tags are:GETPUT Admin Which four requests would be allowed by the container?()A、A user whose role is Admin can perform a PUT.B、A user whose role is Admin can perform a GET.C、A user whose role is Admin can perform a POST.D、A user whose role is Member can perform a PUT.E、A user whose role is Member can perform a POST.F、A user whose role is Member can perform a GET.

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考题 单选题public class TestA{   public void methodA()  throws IOException{   //……   }   }   public class TestB extends TestA{   public void methodA()  throws EOFException{   //……   }   }   public class TestC extends TestA{   public void methodA()  throws Exception{   //……   }   }   当编译类TestC的时候,结果是哪项?()A  正常B  编译错误C  运行错误D  以上都不对

考题 单选题在J2EE中,有如下代码在Servlet1.java中。  import javax.servlet.*;  import javax.servlet.http.*;  import java.io.IOException;  import java.io.PrintWriter;  public class Servlet1 extends HttpServlet {    public void init()  throws ServletException {   }  public void service(HttpServletRequest request, HttpServletResponse response)  throws ServletException, IOException {      PrintWriter out = response.getWriter();      out.println("hello!");   } }   假如编译Servlet要具备的环境都已经建立好。现在用完全正确的命令编译该文件,对于以下陈述正确的是()。A 编译该文件时会提示缺少doGet()或者doPost()方法,编译不能够成功通过B 编译后,把Servlet1.class放在正确位置,在浏览器中查看该Servlet1,会看到输出文字:“hello!”C 编译后,把Servlet1.class放在正确位置,在浏览器中查看该Servlet1,却看不到任何输出的文字D 编译后,把Servlet1.class放在正确位置,在浏览器中查看该Servlet1,却看到产生运行时错误的出错信息

考题 单选题interface Data { public void load(); }  abstract class Info { public abstract void load(); }  Which class correctly uses the Data interface and Info class?()A  public class Employee extends Info implements Data { public void load() { /*do something*/ } }B  public class Employee implements Info extends Data { public void load() { /*do something*/ } }C  public class Employee extends Info implements Data { public void load() { /*do something */ } public void Info.load() { /*do something*/ } }D  public class Employee implements Info extends Data { public void Data.load() { /*dsomething */ } public void load() { /*do something */ } }E  public class Employee implements Info extends Data { public void load() { /*do something */ } public void Info.load(){ /*do something*/ } }F  public class Employee extends Info implements Data{ public void Data.load() { /*do something*/ } public void Info.load() { /*do something*/ } }

考题 单选题现有:  interface Data {public void load();}  abstract class Info {public abstract void load();}      下列类定义中正确使用Data和Info的是哪项?()A  public class Employee implements Info extends Data { public void load(){/*dosomething*/}     }B public class Employee extends Inf.implements Data{ public void load() {/*do something*/}     }C public class Empl.yee implements Inf extends Data{ public void Data.1oad(){* do something*/}     public void load(){/*do something*/}     }D public class Employee extends Inf implements Data  {  public void Data.1oad()  {/*do something*/)     public void info.1oad(){/*do something*/}    }

考题 单选题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 here 26.} 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);

考题 单选题Given: 11.public class MyServlet extends HttpServlet { 12.public void service(HttpServletRequest request, 13.HttpServletResponse response) 14.throws ServletException, IOException { 15.// insert code here 16.} 17.} and this element in the web application’s deployment descriptor: 302 /html/error.html Which,inserted at line 15,causes the container to redirect control to the error.html resource?()A response.setError(302);B response.sendError(302);C response.setStatus(302);D response.sendRedirect(302);E response.sendErrorRedirect(302);