An IllegalStateException is thrown at runtime.
An InvalidSessionException is thrown at runtime.
The string value=null appears in the response stream.
The string value=myAttributeValue appears in the response stream.
第1题:
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。
1、String.valueOf(1.23)
第2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 () throw ServletException {} Public void service(HttpServletRequest request, HttpServletResponce 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,对于以下成熟正确的是()
第3题:
给定某servlet 程序的片段,如下:
Public void doGet(HttpServletRequest
request,Httpservletresponse response)
{
_________
}
要把session的失效时间设为30分钟,应该在下划线处插入( )
A、request.getSession().setTimeout(1800);
B、request.getSession().setTimeout(30)
C、request.getSession().setMaxInactiveInterval(1800);
D、request.getSession().setMaxInactiveInterval(30);
第4题:
Given the definition of MyServlet: 11.public class MyServlet extends HttpServlet { 12.public void service(HttpServletRequest request, 13.HttpServletResponse response) 14.throws ServletException, IOException { 15.HttpSession session = request.getSession(); 16.session.setAttribute("myAttribute","myAttributeValue"); 17.session.invalidate(); 18.response.getWriter().println("value=" + 19.session.getAttribute("myAttribute")); 20.} 21.} What is the result when a request is sent to MyServlet?()
第5题:
在J2EE中,Servlet1的代码如下: import javax.servlet.*; import javax.servlet.http.*; import java.io.*; public class Servlet1 extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); String aa=request.getQueryString(); String bb=request.getMethod(); out.println(aa); out.println(bb); } } 把Servlet1.class文件放在Web服务器适合的目录下,在浏览B器地址栏内输入:http://localhost:8080/servlet/Servlet1?name=jb-aptech&phone=12345678,看到的结果是()。
第6题:
下面哪个方法不是HttpServlet类:()
第7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()。
第8题:
GivenanHttpServletRequestrequestandanHttpServletResponseresponse:41.HttpSessionsession=null;42.//insertcodehere43.if(session==null){44.//dosomethingifsessiondoesnotexist45.}else{46.//dosomethingifsessionexists47.}Toimplementthedesignintent,whichstatementmustbeinsertedatline42?()
A.session=response.getSession();
B.session=request.getSession();
C.session=request.getSession(true);
D.session=request.getSession(false);
E.session=request.getSession("jsessionid");
第9题:
Given an HttpServletRequest request and an HttpServletResponse response: 41.HttpSession session = null; 42.// insert code here 43.if(session == null) { 44.// do something if session does not exist 45.} else { 46.// do something if session exists47. } To implement the design intent,which statement must be inserted at line 42?()
第10题:
Given an HttpServletRequest request: 22.String id = request.getParameter("jsessionid"); 23.// insert code here 24.String name = (String) session.getAttribute("name"); Which three can be placed at line 23 to retrieve anexisting HttpSession object?()