Ozgur,
I've tried the attached servlet sample you post, but I still couldn't run it
as a portlet.
my steps:
1. add this into one of my .xreg:
<portlet-entry name="Servlet Testing ..." hidden="false"
type="instance" application="false">
<meta-info>
<description>Servlet Testing again</description>
</meta-info>
<classname>com.bluesunrise.portal.portlets.FormTest</classname>
<media-type ref="html"/>
</portlet-entry>
2. put the class file of this servlet in
<jetspeed-home>\WEB-INF\classes\com\bluesunrise\portal\portlets
3. Start Tomcat, Log in, and try to add portlet
but when I try to add this servlet after I click "save & apply", the
portlets all disappear.
Can you tell me the steps to make this servlet running as a Jetspeed
portlet?
Where should I put the class file of this servlet at?
Do I need to modify this web.xml file? //jetspeed/WEB-INF/web.xml
Thank you for help!!
Irene
-----Original Message-----
From: Ozgur Balsoy [mailto:[EMAIL PROTECTED]]
Sent: Saturday, February 02, 2002 9:34 AM
To: 'Jetspeed Users List'
Subject: RE: Q:Servlets and Database search in Jetspeed
Actually, it is quite simple to keep the page within the portlet. Just
put the Jetspeed's path to the action field of the form. However, this
prevents you to link your form's action to another servlet. That is you
have to print out your form with your servlet and you have to process
the response with the very same servlet. I paste a small example to
illustrate the idea and this works fine.
The reason for this method is that Jetspeed is run by a central servlet
which is called 'jetspeed' in jetspeed/WEB-INF/web.xml and mapped to the
Java class org.apache.turbine.Turbine. This servlet retrieves the
request and response objects, initializes a new similar object called
rundata and and fills it with request, response, user profiler, etc and
forwards it to all the portlets.
When you set the action field to the main portal path, this Turbine
servlet acts like a mother servlet and passes your request and response
object to your child servlet.
Ozgur
--------------FormTest.java-----------------
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class FormTest extends HttpServlet {
private static final String CONTENT_TYPE = "text/html";
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
String path = request.getContextPath() +
request.getServletPath();
out.println("<html><head><title>FormTest</title></head><body>");
if( request.getParameter("x_login") == null ) {
out.println("<form method=\"post\" action=\"" + path +
"\">");
out.println("<p>Username:<input type=\"text\"
name=\"x_username\" size=\"20\"><br>");
out.println("Password:<input type=\"password\"
name=\"x_password\" size=\"20\"><br>");
out.println("<input type=\"submit\" name=\"x_login\"
value=\"Login\"></p></form>");
} else {
out.println("<p>You have logged in as ");
out.println( request.getParameter("x_username") );
out.println("<br>and your password is ");
out.println( request.getParameter("x_password") );
out.println("<a href=\"" + path + "\">Click here for the
form</a>");
}
out.println("</body></html>");
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
doGet( request, response );
}
}
-----Original Message-----
From: David Sean Taylor [mailto:[EMAIL PROTECTED]]
Sent: Saturday, February 02, 2002 12:27 AM
To: Jetspeed Users List
Subject: Re: Q:Servlets and Database search in Jetspeed
----- Original Message -----
From: "Irene Huang" <[EMAIL PROTECTED]>
To: "Jetspeed user" <[EMAIL PROTECTED]>
Sent: Friday, February 01, 2002 4:39 PM
Subject: Q:Servlets and Database search in Jetspeed
> Dear all,
>
> If I have a JSP portlet, and I have a form:
>
> <form method=get
action="http://localhost:8080/examples/servlet/Dtest";>
>
> Q:
> after click submit, i will go to the servlet page.
> Is there a way i can display the result in the same page (without
going to
> the servlet page)?
> Or what's the "exact link path" that I could add to the servlet page
so
that
> user can click back to go to the starting page?
>
Im not sure if I understand the question, but I think you are trying to
always keep the servlet in the portlet window as you navigate thru the
servlet.
If so, you may need to somehow track the state of your session between
your
portlet and the servlet it is 'hosting'.
One simple way is to write the state into a query param or directly into
the
HTML(into an INPUT)
A more complex way would be to completely proxy the whole session....
Also, you will also need to rewrite your links (something like in the
WebPagePortlet, but you want to rewrite back to Jetspeed)
> Q:
> If I want to add a portlet for user to do database search, what is the
> best/easist way to do it? any advice?
>
You can use whatever you like to access the database in Java (JDBC comes
to
mind...), callout to any methods.
Don't recommend putting db code in the portlet, abstract it out, layer
your
data access.
Take a look at Torque
http://jakarta.apache.org/turbine/torque/index.html
>
>
> Thank you for help!!
>
> Irene
>
>
> --
> To unsubscribe, e-mail:
<mailto:[EMAIL PROTECTED]>
> For additional commands, e-mail:
<mailto:[EMAIL PROTECTED]>
>
>
--
To unsubscribe, e-mail:
<mailto:[EMAIL PROTECTED]>
For additional commands, e-mail:
<mailto:[EMAIL PROTECTED]>
--
To unsubscribe, e-mail:
<mailto:[EMAIL PROTECTED]>
For additional commands, e-mail:
<mailto:[EMAIL PROTECTED]>
--
To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
