generally speaking, you can use the requestDispatcher to forward to a jsp
which "is" your input form. This jsp can use all of the request attributes and
request parameters to "prefill" the fields with the "value=" attribute on your
<input> tags.
eg:
in
your servlet:
boolean tryAgain = false;
String
attrName = "myinputfield";
String
attrVal = request.getParameter(attrName);
if
(attrVal != null) {
if (
fieldValidator(attrName,attrVal).isGoofy()){
tryAgain =
true;
request.setAttribute(attrName,"Your input
was goofy! Try again!");
}
}
if
(tryAgain) {
request.getRequestDispatcher("/inputform.jsp").forward(request,response);
}
in
your "inputform.jsp":
<%=
request.getAttribute("myinputfield") %>
<%
String s = "<input type=\"text\", name=\"myinputfield\",value=\"" +
(String) request.getParameter("myinputfield") +
"\">";
out.println(s);
%>
-----Original Message-----Is there another way without diving into struts! It sounds like I need to spend time in the future to learn about struts, but for now... I need another solution.
From: Kevin Goethe [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 30, 2003 3:33 PM
To: [EMAIL PROTECTED]
Subject:
At 02:50 PM 1/30/2003 -0500, you wrote:
Kevin:
Have you considered using Struts? It neatly solves this as well as many other problems. (plus is pure pleasure to work with!! :)
Regards,
Geeta
Kevin Goethe wrote:
Use pure server-side (_javascript_ not an option)
Question:
I need a way to preserve the input fields entered on a form after field validation occurs in the servlet. If input error is detected during servlet validaton, how can I redisplay input form with values the user entered?
I am using a servlets not jsp.
Kevin Goethe
Senior Analyst
Northern Michigan University
1401 Presque Isle
501 Cohodas Building
Marquette, MI 49855
email: [EMAIL PROTECTED]
phone: 906-227-1253
fax: 906-227-1890Kevin Goethe
Senior Analyst
Northern Michigan University
1401 Presque Isle
501 Cohodas Building
Marquette, MI 49855
email: [EMAIL PROTECTED]
phone: 906-227-1253
fax: 906-227-1890
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