Can a single servlet process 2 diffrent jsp pages?

I am kinda new to the jsp world. Here is the question i have.
I have 2 jsp pages and a sigle servlet class. Both the jsp pages need to be processed by the same servlet. The servlet needs to run diffrent logics based on which jsp the request is being sent from. Is there any way for the servlet to know which jsp the request is coming from( like having an attribute in the form tag of the jsp which the servlet can later retrieve)?
I am using only jsp's and servlet( not using any other technology like struts or JSf's). I appreciate any kind of help. Thank you.

Yes, you can! It depends on how you access the servlet. If you access it via GET method you must add a request parameter to the url to distinguish from which jsp the request comes. If you use POST method (with form submission) put a hidden field in the form and with that field you can recognize from which jsp the request comes.
Message was edited by:
amittev

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i have put this into one sevlet:
package utils.ticker;
import javax.servlet.ServletContext;
public class Edicion{
private ServletContext myContext;
public Edicion(ServletContext myContext) {
this.myContext = myContext;
public String getCC(){
return myContext.getRealPath("/");
and in the jsp page this:
<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*"%>
<%@ page import="utils.ticker.*" %>
<jsp:useBean id="tick" class="utils.ticker.Edicion" scope="session"/>
<html><head><body>
<%=tick.getCC()%>
</body></head></html>
but appear this error in the tomcat.
Can you, please, help me. i am trying to solve this during one week and i am desesperate.
Thanks.
ERROR:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: class utils.ticker.Edicion : java.lang.InstantiationException: utils.ticker.Edicion
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Hi,
Now i am getting different kind of exception::
06/11/24 08:11:06 java.lang.Exception: Failed to create "ejb/collaxa/system/DeliveryBean" bean; exception reported is: "javax.naming.NamingException: META-INF/application-client.xml not found (see J2EE spec, application-client chapter for requirements and format of the file)
     at oracle.j2ee.naming.ApplicationClientInitialContextFactory.getRequiredClasspathResource(ApplicationClientInitialContextFactory.java:239)
     at oracle.j2ee.naming.ApplicationClientInitialContextFactory.getArchive(ApplicationClientInitialContextFactory.java:161)
     at oracle.j2ee.naming.ApplicationClientInitialContextFactory.getInitialContext(ApplicationClientInitialContextFactory.java:111)
     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
     at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
     at javax.naming.InitialContext.init(InitialContext.java:223)
     at javax.naming.InitialContext.<init>(InitialContext.java:197)
     at com.oracle.bpel.client.util.BeanRegistry.lookupDeliveryBean(BeanRegistry.java:277)
     at com.oracle.bpel.client.delivery.DeliveryService.getDeliveryBean(DeliveryService.java:250)
     at com.oracle.bpel.client.delivery.DeliveryService.post(DeliveryService.java:174)
     at com.oracle.bpel.client.delivery.DeliveryService.post(DeliveryService.java:149)
     at _testbpel._jspService(_testbpel.java:79)
     at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:453)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:591)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:515)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:711)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:216)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
     at java.lang.Thread.run(Thread.java:595)
06/11/24 08:11:06      at com.oracle.bpel.client.util.BeanRegistry.lookupDeliveryBean(BeanRegistry.java:293)
06/11/24 08:11:06      at com.oracle.bpel.client.delivery.DeliveryService.getDeliveryBean(DeliveryService.java:250)
06/11/24 08:11:06      at com.oracle.bpel.client.delivery.DeliveryService.post(DeliveryService.java:174)
06/11/24 08:11:06      at com.oracle.bpel.client.delivery.DeliveryService.post(DeliveryService.java:149)
06/11/24 08:11:06      at testbpel.jspService(_testbpel.java:79)
06/11/24 08:11:06      at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
06/11/24 08:11:06      at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:453)
06/11/24 08:11:06      at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:591)
06/11/24 08:11:06      at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:515)
06/11/24 08:11:06      at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
06/11/24 08:11:06      at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:711)
06/11/24 08:11:06      at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368)
06/11/24 08:11:06      at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866)
06/11/24 08:11:06      at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448)
06/11/24 08:11:06      at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:216)
06/11/24 08:11:06      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
06/11/24 08:11:06      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
06/11/24 08:11:06      at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
06/11/24 08:11:06      at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
06/11/24 08:11:06      at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
06/11/24 08:11:06      at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
06/11/24 08:11:06      at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
06/11/24 08:11:06      at java.lang.Thread.run(Thread.java:595)

Tomcat 6 Calling a Java Servlet from a JSP Page

Below is a very simple JSP Page that calls a Java Servlet. The question is given Tomcat security constraints, is it possible to call a servlet from a JSP and get the correct output without getting an error message? If so, how would you code the web.xml file?
c:\apache-tomcat-6.0.18
Under conf
catalina
localhost
HelloWorldExample.xml is directly under localhost
The application would have this directory structure:
webapps
HelloWorldExample
hello.jsp is directly under HelloWorldExample
Under HelloWorldExample
src
WEB-INF
classes
Under classes
jservlets
HelloWorld.java is in src folder
HelloWorld.class is in jservlets folder
HelloWorldExample.xml
<Context path="/HelloWorldExample" docBase="HelloWorldExample" debug="0"
      reloadable="true" crossContext="true">
</Context>**************************
hello.jsp
<HTML>
<HEAD>
<TITLE>Hello</TITLE>
</HEAD>
<BODY>
<FONT SIZE="4">
<P>
Please enter your name:
<FORM
   METHOD="Post"
   ACTION="servlet/jservlets.HelloWorld">
<TABLE BORDER="3" CELLPADDING="1" WIDTH="100%" ALIGN="CENTER">
<TR>
    <TD><B>Name:</B></TD>
    <TD><INPUT TYPE="text" NAME="Name" VALUE="" SIZE="65"> </TD>
</TR>
</TABLE>
<P>
<INPUT TYPE="SUBMIT" VALUE="Submit">
</FORM>
</FONT>
</BODY>
</HTML>******************
HelloWorld.java
package jservlets;
import java.io.*;
import java.util.Date;
import java.util.*;
import java.text.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloWorld extends HttpServlet
   PrintWriter out;
   PrintWriter err;
   String strName;
public void displayMessage(HttpServletRequest request, HttpServletResponse response)
      throws Exception
         try
            if (!strName.equals("") && strName != null)
               out.println("Hello " + strName + "" + "<P>");
                out.println("Hello World" + "<P>");
            else
                out.println("Hello World" + "<P>");
        catch (Exception e)
            out.println("Exception: Could not display message." + "<P>");
            err.println (e.getMessage () ) ;
            out.println("<P>");
public void doPost(HttpServletRequest request, HttpServletResponse response)
           throws ServletException, IOException
      try
           response.setContentType("text/html");
           out = response.getWriter();
           err = response.getWriter();
           strName = request.getParameter("Name").trim();
           out.println("<html><head><title>");
          out.println("</title></head><body>");
           out.println("<FORM");
           out.println("METHOD=POST");
           out.println("ACTION=http://localhost:8080/HelloWorldExample/hello.jsp>");
         out.println("<TABLE ALIGN='RIGHT'>");
         out.println("<TR>");
         out.println("<TD>");
           out.println("<INPUT TYPE=\"SUBMIT\" VALUE=\"Hello World Page\";>");
           out.println("</INPUT>");
          out.println("</TD>");
         out.println("</TR>");
         out.println("</TABLE>");
         out.println("</FORM>");
         out.println("<BR CLEAR='all'>");
           out.println("<P>");
           displayMessage(request, response);
           out.close();
         out.println("</body></html>");
       catch(Throwable e)
          e.printStackTrace();
      public void doGet(HttpServletRequest request, HttpServletResponse response)
         throws ServletException, IOException
         doPost(request, response);
web.xml
<servlet>
      <servlet-name>HelloWorld</servlet-name>
      <servlet-class>jservlets.HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
        <servlet-name>HelloWorld</servlet-name>
        <url-pattern>/servlet/HelloWorld</url-pattern>
</servlet-mapping>      ******************************
HelloWorld.java can be compiled by using javac.
Once compiled, HelloWorld.class would be moved to the jservlets folder.
FYI, coding the above url-pattern results in:
HTTP Status 404
The requested resource (/HelloWorldExample/servlet/jservlets.HelloWorld) is not available
The following url-pattern in the web.xml file permits the servlet to be executed but results in a null pointer exception:
<servlet-mapping>
        <servlet-name>HelloWorld</servlet-name>
        <url-pattern>/ </url-pattern>
</servlet-mapping>      **************************************************
Robin

This problem was resolved.
In hello.jsp
ACTION="servlet/jservlets.HelloWorld">
was replaced with
ACTION="servlet/HelloWorld">
Robin

Extracting a value from the j_security_check servlet into a JSP page

Hi Folks...
I have a problem as follows:
I log in into the web app, via my login.jsp page. Below is the code for the form that accepts the login information
<form method="POST" action="j_security_check">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
    <td align="right">Username: </td>
    <td><input type="text" name="j_username"></td>
</tr>
<tr>
    <td align="right">Password: </td>
    <td><input type="password" name="j_password"></td>
</tr>
<tr>
    <td></td>
    <td><input type="submit" value="Login"></td>
</tr>
</table>
</form>Login is sucessful and I am brought to the 'studentstub.jsp' page. I would like the user name to appear on the 'studentstub.jsp' page. I used the following code in the 'studentstub.jsp' page :
<td><%= request.getParameter("j_username")%></td> but all I am getting is a null. The 'j_security_check' servlet is not exactly part of my package, but the glassfish app server. Is there anything wrong in the way I am extracting the information from 'j_security_check' ? Hope someone can advise, thanks.

Hi Folks..
I managed to get a reply from another forum and the suggested solution works. I am going to share it with everyone here.
I repalced this line of code:
<td><%= request.getParameter("j_username")%></td>with this:
<td><%= request.getRemoteUser()%></td>The 'getRemoteUser' method from HttpServletRequest returns the name of the authenticated user. I hope this information will be helpful to those caught in a simillar problem. Thanks.

How include a Servlet into a JSP page?

Hi!!
I need make a combobox with a servlet and place its result into a jsp page.
The servlet is in a package, but when i do: <jsp:include file="sic.view.servlet.ComboServlet" />
tell me that "file attribute isn�t a valid attribute name"
whow can i do to make the combobox whit the servlet and include this into the jsp page??
Thanks!!
PD: Sorry my pour English...

Servlets should be mapped to a URL, then you access the servlet via that URL.
The servlet mapping is done in the web.xml (in WEB-INF/ directory of your web application)
<servlet>
    <servlet-name>
      Combo_S
    </servlet-name>
    <servlet-class>
      sic.view.servlet.ComboServlet
    </servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>
      Combo_S
    </servlet-name>
    <url-pattern>
      /combo
    </url-pattern>
</servlet-mapping>Then you would use:
<jsp:include file="combo" />
to include it.
Make sure the class file gets put in the right package under WEB-INF/classes/

Include a Servlet into a JSP page

Hi guys,
When i try to include a Servlet into my JSP, the execution of the JSP stops...Somebody know why???

Hi guys,
When i try to include a Servlet into my JSP,the
execution of the JSP stops...Somebody knowwhy???
No, and do you know why ? Bcos including a
servlet
in
a jsp doesnt stop the execution of the jsp. Sotell
us that you tried to do, post some relevant
code,
for us to help you.
ram.<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@page buffer="500kb"%>
<html>
<head><title>JSP Page</title></head>
<body>
<jsp:include page="/showCryptValue"
ptValue" flush="true" />
asdfasdfasdfasdfasdf
</body>
</html>
that's the source code....do you have any idea????
Thak's a lottttFrom linxpda:
1) setting the flush="false" parameter for thejsp:include tag?
Here is the problem that I, and perhaps linxpda,
think you have:
You get an exception in the servlet.
You have already written to and flushed the response,
therefore you can not see the exception on your
screen (seeing the exception on screen requires a
send redirect to the error page, which can't happend
when the response is already committed).
The exception that is occuring MAY be alreay written
in your logs, take a look.
To see the problem on screen so as to be able to
identify it, make sure your include tag DOES NOT
flush the buffer. That means change
<jsp:include page="/showCryptValue" flush="true" />
to
<jsp:include page="/showCryptValue" flush="false" />Hi!
No even setting flush false or true it works...If somebody have done this before tell me how have you did....If you can post your code!
[]'s
Falow

How can I send email from an JSP page with HTML format either using jsp

hi,
I have an jsp page with online application form,after compleating the form if i select submit it will send all the compleated data to the mail id we mentioned in the form tag,for this i am using javascript,but instead of receiving the data in the format of strings,my client want to receive the data in the same format as he's filling in the jsp page(html format) through e-mail.any help would be appreciated.the fallowing is the code right now i am using for email application.
<code>
function send()
if(validatePersonalInfo(document.theform))
     document.theform.submit()
     location.href=location.reload()
function validatePersonalInfo(form)
     var tmpStr ="";
     if (form.Name.value == "") {
          tmpStr = "Name";
          document.all.dName.style.visibility="visible";
          document.theform.Name.focus();
     else{
          document.all.dName.style.visibility="hidden";
     if (form.SSN.value == "") {
          tmpStr = tmpStr + ", Social Security Number";
     document.all.dSSN.style.visibility="visible";
     if(form.Name.value != "")
          {document.theform.SSN.focus();}
     else{
          document.all.dSSN.style.visibility="hidden";
if (tmpStr == "") {
          return true;
     } else {
          alert("Please Fill the Following Fields: " + tmpStr);
          return false;
<FORM NAME="theform" METHOD="post"
ACTION="mailto:[email protected]?subject=Online Application Form for MinorityDealer." ENCTYPE="text/plain">
<TABLE WIDTH="100%" BORDER="0" CELLSPACING="0" CELLPADDING="10" NOF="LY">
<TH>
<P>
     <FONT SIZE="3" FACE="Arial,Helvetica,Univers,Zurich BT">Online�Application</font></TH><BR>
</TABLE>
<table width="718" border="1" cellspacing="0" cellpadding="3" bgcolor="#CCCCFF" align="center">
     <tr>
<td colspan="2"><font class="captionText">Name*�</font><br><input type="text" size="25" name="Name" class="bodyText">
<div id="dName" name="dName" style="position:absolute;visibility:hidden"><font color="red">Name is Mandatory*</font></div>
</td>
          <td colspan="2"><font class="captionText">Social Security Number*�</font><br><input type="text" size="9" name="SSN" class="bodyText">
          <div id="dSSN" name="dSSN" style="position:absolute;visibility:hidden"><font color="red">SSN is Mandatory*</font></div></td>
</tr>
<tr>
<td colspan="2"><font class="captionText">Total Personal Assets</font><br><input type="text" size="10" name="TotPersAss3" class="bodyText"></td>
          <td colspan="2"><font class="captionText">Total Personal Liabilities & NetWorth</font><br><input type="text" size="10" name="TotPerLiab3" class="bodyText"></td>
</tr>
     </tr>
</TABLE>
<IMG Valign="middle" name="imgSubmit" src="images/buttons/Submit.gif" width="66" height="29" border="0" alt="Submit">
</code>

Can any one do some help to solve this problem.
Regards.

Can't use relative paths in jsp pages or javabeans

Hi everyone,
Can someone please help me with this little problem.
When I want to use in a JSP page the object 'FileReadInput' to read in a file, it can't find when I only give the filename. The target file and source file are in the same directory so I would expect if I only give the filename, it will automatically search in the current directory. But when I give the complete absolute path, everything works fine. Is it possible to use relative paths in a jsp or javabean file?
By the way, I am working with JDeveloper from Oracle. (maybe that has something to do with my problem)
Can someone help me???
Thx

My dear friend,
It will not work at all. coz, for any jsp file, ur application server will create a .java file and then .class file in a directory other than the directory where ur .jsp file present. that's why, ur file to be read can't be found. that's why use the following.
String path=getServletConfig().getServletContext().getRealPath("/")+File.seperator+"yourfilename";

Can't find Design View for JSP page on Unix

I'm using weblogic workshop to develop page flow on Solaris, and I can't find the Design View tab to build
JSP page. I searched all menus and can't find one to enable this function. Is this function supported on Unix?
Thanks
Zhong

Zhong--
Unfortunately, no; Workshop 8.x does not support design view on UNIX.
Eddie

Can a single servlet process 2 diffrent jsp pages?

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