Hi Maria,
I think something is wrong with the string object. You directly use the validateUser()
method with the string object , my opinion is you have to use this method with the
string object's value, not with directly string object.
I am not realy sure but try to use the equals() method that belongs to the string
object and embed only the value into the validateUser() method.
"Maria Elena Christensen (DXD)" wrote:
> Hi all:
>
> I´m starting with servlets and i went to WDVL (Building a web application
>servlets.jsp)
> http://wdvl.internet.com/Authoring/Java/Servlets/index.html and found a tutorial
>about how to make a servlet call a .jsp. But I just copy.paste, and is not working,
>here is the code and the error maybe you can helpme, thanks.
>
> *****************************************************
> import javax.servlet.http.*;
> import java.io.*;
> import java.util.*;
>
> public class Login extends HttpServlet {
>
> //Process the HTTP Post request
> public void doPost(HttpServletRequest req, HttpServletResponse res)
> throws ServletException, IOException {
> //
> String userId = req.getParameter("userId");
> String password = req.getParameter("password");
>
> /************************************************************
> ** call a method to validate the password which will return the
> ** User Name for authorized users and null string for un-authorised.
> **********************************************************/
> String uName = validateUser(userId, password);
> // if uName is null.. user is no authorized
>
> if (uName == null)
> {
> PrintWriter ot = res.getWriter();
> ot.println(" Please verify the Userid and password");
> ot.close();
> }
> else
> {
> // So the user is valid let's create a seesion // for this user.
> HttpSession userSession = req.getSession(true);
>
> // put the user name session variable.
> userSession.putValue("userName", uName);
>
> // now we need to transfer the control to welcome.jsp
>
> RequestDispatcher rd =
>getServletContext().getRequestDispatcher("/sevlets/WDVLTut/welcome.jsp");
>
> if (rd != null)
> {
> rd.forward(req,res);
> }
> }
> }// end of doPost
> }// end of servlet class
> ***************************************************************
>
> error message:
> D:\servlets\WDVLTut>javac -d d:\JRun\servlets *.java
> Login.java:21: Method validateUser(java.lang.String, java.lang.String) not found in
>class WDVLTut.Login.
> String uName = validateUser(userId, password);
> ^
> Login.java:41: Method getRequestDispatcher(java.lang.String) not found in interface
>javax.servlet.ServletContext.
> RequestDispatcher rd =
>context.getRequestDispatcher("/sevlets/WDVLTut/welcome.jsp");
> ^
> 2 errors
>
> Process completed with exit code 1
> *************************************************************
> compaling batch file:
> REM Compile and deploy
> REM
> set CLASSPATH=d:\JRun\lib\servlet.jar;d:\JRun\servlets
> javac -d d:\JRun\servlets *.java
> **************************************************************
> Thanks a lot
>
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