Hello,
How do you expect to get the ServletContext if your class is not a
Servet?
Your class must extend javax.servlet.http.HttpServlet to be a Servlet!
Pay attention!
On Sep 17, 3:47 pm, gozlemci <forwardtofut...@gmail.com> wrote:
> Hi there;
> I am writing the code in book :"Professional JSP" by Wrox Press Ltd.
> and I got the following error. Could you please help me?
> Error description : "The method getServletContext() is undefined for
> the type UserSSNServer" In every line that contains
> "getServletContext"
>
> I am using Eclipse Java EE IDE for Web Developers. Build id:
> 20090621-0832
>
> Here are the class:
> import java.io.*;
> import java.util.*;
> import javax.servlet.*;
> import javax.servlet.http.*;
> import javax.servlet.GenericServlet;
> import sun.reflect.generics.tree.BaseType;
> import mfc.SSNList;
> import mfc.CustomerInfoBean;
> import mfc.Constants;
> import javax.servlet.http.HttpServlet;
>
> public class UserSSNServer {
>
> private static String cName = "UserSSNServer";
> private boolean debugFlag = true;
>
> public void init() throws ServletException
> {
> String mName = new String(cName + ".init()");
> System.out.println(mName + "start.");
> System.out.println(mName + "end.");
>
> }
>
> public void processRequestType(HttpServletRequest request
> ,HttpServletResponse response) throws
> ServletException ,
> IOException
> {
> String mName = new String(cName + ".processRequestType(): ");
> System.out.println(mName + "start.");
> String reqTypeStr = (String) request.getParameter("reqType");
> System.out.println(mName + "reqTypeStr = " + reqTypeStr);
>
> int requestType = Constants.ERROR;
>
> if(reqTypeStr == null)
> {
> throw new ServletException (mName + "reqType was
> null.");
>
> }
> requestType = Integer.parseInt(reqTypeStr);
> switch(requestType)
> {
>
> case Constants.CREATE_VALID_SNN_LIST:
> createSSNList(request,response);
> break;
>
> default:
> System.out.println(mName + "default case.");
> throw new ServletException(mName + "default case
> reached.");
>
> }
> System.out.println(mName + "end.");
>
> }
>
> @SuppressWarnings("unchecked")
> public void createSSNList(HttpServletRequest request,
> HttpServletResponse response) throws ServletException, IOException
> {
>
> String mName = new String(cName + ".createSSNList(); ");
> System.out.println(mName + "start. ");
> ServletContext context = null;
>
> //construct the object that creates the SSN list.
> SSNList ssnList = new SSNList();
> ArrayList ssnArrayList = ssnList.getSSNList();
>
> // up the Arraylist into the servlet context so others may
> retrieve.
> context = getServletContext();
> context.setAttribute("ValidSSNList", ssnList.getSSNList() );
> HttpSession session = request.getSession();
>
> CustomerInfoBean customerInfo = (CustomerInfoBean)
> session.getAttribute("customerInfo");
>
> StringBuffer errorMsgBuff = new StringBuffer("error message
> was: ");
>
> if(customerInfo == null)
> {
> errorMsgBuff.append("could not get UserINfo bean from
> the
> session.");
> session.setAttribute("errorMsg",
> errorMsgBuff.toString());
> //
> redirectToResource(request,response,"/mutualFundCo/jsp/
> sorry.jsp");
>
> }
>
> String ssn = customerInfo.getSsn();
>
> if (ssn == null) {
>
> System.out.println("SSN was not in the
> customerInfoBean.");
>
> }
> else {
>
> System.out.println(mName + "validate SSN");
> RequestDispatcher rd = null;
>
> if(ssnArrayList.contains(ssn) == true)
> {
>
> request.setAttribute("reqType",
> Integer.toString
> (MAKE_PROFILE_REQUEST));
> rd =
> getServletContext().getRequestDispatcher("/servlet/
> UserProfileServer");
> rd.forward(request, response);
>
> }else
> {
>
> errorMsgBuff.append("The social security
> number you have entered :
> '" + ssn +
> "' was not found.Please call
> 1-800-MFC-HELP");
>
> redirectToResource(request, response,
> "/mutualFundCo/jsp/
> sorry.jsp");
> }
> System.out.print(mName + "end .");
> }
>
> }
>
> }
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