You may have some other fields with the name "Name" in your html page.
So first I would make sure I don't have any duplicate field names in my
html page.
--Pradeeep
Pradeep Paudyal
Software Engineer,
Bricsnet US
Ph: 603 559 2505
On Tue, 21 Nov 2000, Theodor Goulas wrote:
> Hello everyone,
>
> I wrote a simple servlet application which take the user input from a
> web page and return it to a html page.
> The problem is by testing if the value is null or not.
> It suppose to return some massage if the value is null, let's say "No
> value" and the value, if it's not null.
> Here is some source code :
>
> import java.io.*;
> import java.lang.*;
> import javax.servlet.*;
> import javax.servlet.http.*;
>
> public class EinfachesServlet extends HttpServlet{
>
> public void doPost (HttpServletRequest request,
> HttpServletResponse response)
> throws ServletException, IOException {
>
> response.setContentType("text/html");
>
> PrintWriter out = response.getWriter();
>
> out.println("<HTML><HEAD><title>Example</title></HEAD>" + "<body
> bgcolor=FFFFFF>");
>
> out.println("<table >");
> out.println("<tr>");
> out.println("<th></th>");
> //out.println("<th></th>");
> out.println("</tr> ");
> out.println("<tr> ");
>
> String NAME = request.getParameter("Name" );
> String Result = "No value";
>
> if (NAME==null){
> out.println("<td>"+ Result.toString() + "</td> ");
> } else {
> out.println("<td>Name entered:"+NAME.toString()+ "</td>");
> }
>
> out.println("</tr>");
> out.println("<tr>");
>
> String DATE = request.getParameter("Datum");
>
> if (DATE !=null){
> out.println("<td>Date entered:"+ DATE + "</td>");
> } else {
> out.println("<td>No value</td>");
> }
> out.println("</tr>");
> out.println("</table> ");
>
>
> out.println("Return to: <A HREF=../Projekt.html>Projekt </A>");
>
> out.println("</body></HTML>");
> out.close();
> }
> }
>
> If there is not input I get the message "Name entered: " instead of "No
> value".
> What should I change ? The first time I used ...if (Name != null) {...do
> something} just like the second part with the date.
> The second time I tried to make an Object using the new(String Name =
> new String(request.getParameter("Name") )
> but it steel didn't work fine.
> Please send me some solutions.
> Thank you very much.
>
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