Send string between JSP pages

HI, how do I can use a variable String from one JSP to another JSP: example
first.jsp (String mail_string="name@domain")
second.jsp (I need the mail_string value)

HI, how do I can use a variable String from one JSP to
another JSP: example
first.jsp (String mail_string="name@domain")
second.jsp (I need the mail_string value)First JSP:
String mail_string = "name@domain";
session.setAttribute("mystringname", mail_string);Second JSP:
String mail_string = (String) session.getAttribute("mystringname");

Similar Messages

Urgent! pass parameters between jsp pages

Does anyone can give an example about how to pass parameters between jsp pages?
This is what I do:
pageContext.forward("pag_loginc.jsp?p_idusr=" + strUsr + "&c_password=");
But when deployed is not working.
Help is needed.

can you put that stuff in the session context in the first page, then pull it out in the second page?

Traversing between JSP Pages

Hi!,
I need a suggestion to this problem that i'm facing.I want to traverse between JSP pages which follow like a wizard.i.e,i click next to go to the next page & back to traverse back to the previous page.I have some text fields in the previous page that contain some info.When i click on Next it goes to the next page.when i click on Previous i want to be able to view the input contents in the previous page.I tried using < a href="">
but it blanks all the fields ....
Somebody help
Regards,
Chaitra

Use theseus mvc framework. (http://sourceforge.net/projects/theseus-mvc). It will teach you to properly and cleanly right web sites the way they should be, where JSP pages server only as a "view", the action class (servlet hybrid so to speak) handles passing form data to logic, logic returns to action class that then populate the request that is passed on to the JSP page to make use, especially if you use a JavaBean or taglib.

Problem while i am sending image as a stream between jsp pages

Hi,
I want to send the image from one jsp page to another jsp via stream.
Help to continue the process...

Thak you for ur reply.
But in Servlet-Chaining concept, one servlet output stream passed to another servlet and goes on...
like that, is possible to do same in jsp.
My actual task is to send the image from one jsp page to another, the sample code i paste here
<%@ page import="java.io.*" autoFlush="true" %>
<%
System.out.println("======Send.jsp=====");
           ServletContext sercon = getServletContext();
             String filename = sercon.getRealPath("/logo.png");
     RequestDispatcher rd = sercon.getRequestDispatcher ( "/read.jsp" ) ;
     InputStream file=new BufferedInputStream(new FileInputStream(filename));
     int i,j=0;
                  try
          OutputStream os=response.getOutputStream();
          while((i=file.read())!=-1)
               j++;
               os.write((byte)i);
System.out.println("Bytes Read : "+j);
     rd.forward(request,response);
          os.flush();
          file.close();
     catch(Exception e)
          System.out.println("Error"+j);
%>
<%@ page import="javax.swing.*,java.io.*,java.util.*"%>
<%
     byte[] by;
     int i,j=0;
System.out.println("======Read.jsp=====");
     response.setContentType("image/png");
     InputStream is=request.getInputStream();
System.out.println("In Read.jsp read bytes : "+is.available());
     ByteArrayOutputStream os=new ByteArrayOutputStream();
     while((i=is.read())!=-1)
          j++;
          os.write(i);
     by=os.toByteArray();
     out.println(by+"\n"+i);
     os.close();
     is.close();
%>If i run this code (send.jsp) the image is displayed in the current page itself, and not forward to read.jsp
Is any other alternative solutions then point out.

How the hell does a person share session data between JSP page and a Servle

1. How the hell does one share session data between a servlet and a JSP page without using a bean but rather using a normal string variable.
2. When using session scope to access a bean the application complains about not finding the bean on the specified scope, however when I use an application scope the save the same bean, the application does find it.
Please help!!!!!!!
SERVLET:
HttpSession session = request.getSession(true);
ServletContext servletContext = session.getServletContext();
customerID = result.getString("CustomerID");
userName = result.getString("UserName");
session.setAttribute("UserName",userName);
session.setAttribute("CustomerID",customerID);
System.out.println("Customer UserName = " + session.getAttribute("UserName"));
response.sendRedirect("/economics/subscriptions/default.jsp");
JSP PAGE:
<?xml version="1.0" encoding="UTF-8"?>
<jsp:root xmlns:jsp=http://java.sun.com/JSP/Page mlns:c="http://java.sun.com/jsp/jstl/core" xmlns:sql="http://java.sun.com/jsp/jstl/sql" version="2.0">
<jsp:directive.page isThreadSafe="true" session="true" contentType="text/xml"/><jsp:output omit-xml-declaration="false"/><jsp:scriptlet>response.addHeader("x-xslt-nocache", "true");</jsp:scriptlet><pml>
<page type="web" search="y">
     <pageName>Commercial Banking</pageName>
     <jsp:directive.include file="/economics/header.inc"/>
     <jsp:directive.include file="/login.inc"/>
     <jsp:directive.include file="/economics/leftMenu.inc"/>
     
     <content>
     <searchSum>Commercial - Main Content</searchSum>
     Value = <c:out value="${request.session.getAttribute("UserName")}"/>
     </content>
     <jsp:directive.include file="/economics/rightNav.inc"/>
     <jsp:directive.include file="/footer.inc"/>
</page></pml></jsp:root>

For a start, just "session" instead of "request.session" would work better. But why did you post this here and not in the JSP forum? Doesn't seem to have anything to do with Java programming.

Single signon between JSP page and Net.Data page

I am trying to setup a single signon between a JSP page hosted on a tomcat server, and a Net.Data page hosted on an IBM HTTP server. Both of these servers are running on an AS400. The JSP page (www.jsppage.com/menu) contains a link to the Net.Data page (www.netData.com/page2). In order to access www.jsppage.com/menu the user needs to login. Once this happens I want them to be able to go back and forth between the two pages without having to log in when they switch servers. Page navigation is handled through myServlet.java so that when a user clicks on a link the request is forwarded on to myServlet.java where the servlet determines where to redirect the user to. The servlet uses
RequestDispatcher requestDispatcher = getServletContex().getRequestDispatcher(url);
requestDispatcher.forward(request, response);
to forward the user to the correct page. This works fine for the JSP pages but when I forward to www.netData.com/page2 I get an error telling me the address doesn't start with a /. I also need to send the user name and password for the net.data pages to avoid the second login window to popup.
I understand that the requestDsipatcher.forward() method directs the browser to a page that is relative to the current root directory. If I try to use response.sendRedirect(url) I get sent to the right page but the signon window pops up. I would appreciate any help.

I am trying to setup a single signon between a JSP
page hosted on a tomcat server, and a Net.Data page
hosted on an IBM HTTP server. Both of these servers
are running on an AS400. The JSP page
(www.jsppage.com/menu) contains a link to the Net.Data
page (www.netData.com/page2). In order to access
www.jsppage.com/menu the user needs to login. Once
this happens I want them to be able to go back and
forth between the two pages without having to log in
when they switch servers. Page navigation is handled
through myServlet.java so that when a user clicks on a
link the request is forwarded on to myServlet.java
where the servlet determines where to redirect the
user to. The servlet uses
RequestDispatcher requestDispatcher =
getServletContex().getRequestDispatcher(url);
requestDispatcher.forward(request, response);
to forward the user to the correct page. This works
fine for the JSP pages but when I forward to
www.netData.com/page2 I get an error telling me the
address doesn't start with a /. I also need to send
the user name and password for the net.data pages to
avoid the second login window to popup.
I understand that the requestDsipatcher.forward()
method directs the browser to a page that is relative
to the current root directory. If I try to use
response.sendRedirect(url) I get sent to the right
page but the signon window pops up. I would
appreciate any help.You can't do that without passing username and password.
The servers keep track of the user by storing a cookie on the clients computer. The cookie is only valid for the domain that created it.
So, to make this work you need to send the username and password as part of the sendRedirect. the forward() method won't work.
What you could do is create some code on the .net machine that accepts username, password and target URL as input. Once it receives those parameters it should perform the .net login procedure and redirect to the correct page.
In your servlet you should pass those parameters on to the .net machine and the user should get the correct page without ever seeing any login windows.
Make sure to use https if you decide to follow this scheme since http will transmit the username/password in cleartext.
/Christopher

Send message from JSP page to Java message driven bean

Hi all
I'm using Jdev903.
I need to send a message from JSP page (Web Application) to Java Message Driven Bean.
* I created Message Driven Bean that named: MyMessageDrivenEJBBean
* I have configed jms.xml:
<topic-connection-factory name="ChatTopicConnectionFactory" location="jms/theTopicConnectionFactory"/>
<topic name="ChatTopic" location="jms/theTopic"/>
* In JSP page, my code is:
final Context ctx = new InitialContext();
// 1: Lookup ConnectionFactory via JNDI
TopicConnectionFactory factory =(TopicConnectionFactory)ctx.lookup("jms/theTopicConnectionFactory");
But trouble occurs is:
javax.naming.NameNotFoundException: jms/theTopicConnectionFactory not found
please help me!
thank a lot.

Welcome to the Sun forums.
1. Please post your code using code tags, this formats it so that it is easier for people to read and understand it. Click on 'CODE' above the text area when posting.
2. As far as possible, please post an SSCCE
What have learnt about JSPs and servlets till now? Because reading the values submitted in a form is pretty much the base of all operations. I suggest you Google for [servlet tutorials|http://www.google.com/search?q=servlet+tutorial] and [JSP tutorials|http://www.google.com/search?q=jsp+tutorial] and go through them thoroughly. After you understand what is to be done and what options are available to you, if you still face problems, please feel free to post your queries here. But this isn't exactly a site for tutorials, especially since there are so many good ones already out there, that explain all this stuff in detail. There's no point in re-inventing the wheel.
Hints: [ServletRequest#getParameter()|http://java.sun.com/javaee/5/docs/api/javax/servlet/ServletRequest.html#getParameter(java.lang.String)] and [RequestDispatcher#forward|http://java.sun.com/javaee/5/docs/api/javax/servlet/RequestDispatcher.html]

How to use List String in JSP page?

Hello All,
I am having problem using List<String> in my JSP page. Below is my JSP code.
<%@ page import="java.util.*, java.io.*"%>
<html>
<body>
<h1 align="center">Beer Recommendations JSP</h1>
<p>
<%
List<String> beerBrands = (List<String>)request.getAttribute("styles");
Iterator<String> it = beerBrands.iterator();
while(it.hasNext()){
     out.print("<br>try: " + it.next());
%>
</body>
</html>
When I compile the above JSP code in Eclipse 3.4 (using JBoss 4.2 as my Application Server), I get the following Warning.
Type safety: Unchecked cast from Enumeration to Enumeration<String>
If I add the "@SuppressWarnings("unchecked")" to the code, Eclipse does not give any Error during compilation. But, at runtime, I get the following Error.
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 10 in the jsp file: /BeerAdvice.jsp
Syntax error, annotations are only available if source level is 5.0
7: <p>
8:
9: <%
10: @SuppressWarnings("unchecked")
11: List<String> beerBrands = (List<String>)request.getAttribute("styles");
12: Iterator<String> it = beerBrands.iterator();
13: while(it.hasNext()){
An error occurred at line: 11 in the jsp file: /BeerAdvice.jsp
The type List is not generic; it cannot be parameterized with arguments <String>
8:
9: <%
10: @SuppressWarnings("unchecked")
11: List<String> beerBrands = (List<String>)request.getAttribute("styles");
12: Iterator<String> it = beerBrands.iterator();
13: while(it.hasNext()){
14:      out.print("<br>try: " + it.next());
An error occurred at line: 11 in the jsp file: /BeerAdvice.jsp
Syntax error, parameterized types are only available if source level is 5.0
8:
9: <%
10: @SuppressWarnings("unchecked")
11: List<String> beerBrands = (List<String>)request.getAttribute("styles");
12: Iterator<String> it = beerBrands.iterator();
13: while(it.hasNext()){
14:      out.print("<br>try: " + it.next());
Any help is very much appreciated.
Thank you for your help.
Thanks,
Chubha

Hi anotherAikman,
Thank you for your help. I currently have the following version of the Java.
{color:#800000}java version "1.6.0_17"
Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
Java HotSpot(TM) Client VM (build 14.3-b01, mixed mode, sharing)
{color:#000000}{color:#000000}Does it mean I have Java SE Version 6 Update 17 and you are suggesting me to download the Java EE Version 6?{color} If this is correct, can you please let me know what difference does it make?
I am now going to install the Java EE 6 and try this out.
Thank you for your help.{color}
{color:#000000}Thanks,
Chubha{color}
{color}

Pass values between jsp pages

Admin1.jsp
In this jsp page i have a drop down list with<select name=Update
From this page i move to the page Adnim2.jsp
Admin2.jsp
In this page i request for the value of selected entry in the drop down list as follows
String a=request.getParameter("Update");
From this page i move onto a servlet UpdateContribution.java
UpdateContribution.java
Here i need the value of the selected entry in drop down list ie Update
but String a=request.getParameter("Update"); does not work here and i get a Null Pointer Exception
Please help me

In Admin2.jsp, add a hidden form field and assign the selected value of drop-down to it. Now, you can obtain
the selected value of drop-down in Servlet(UpdateContribution.java) using given hidden form field.
Or,
Store the selected value of drop-down list in session. Now, you can obtain the value in servlet(UpdateContribution.java) through session

Passing parameter between jsp pages

Hi
I'v got the following problem: I have an jsp page that shows result of sql query as a list of 5 items, if there are more items returned - it shows first five, user is able to see more by clicking to a link which shows him the same page with next 5 items etc. The piece of index.jsp file with that link looks like that:
        <html:link action="<%=(String)request.getAttribute("actionMod")%> module=... name=... styleClass=...>and at the end of initSearchAction I have:
req.setAttribute("actionMod","initSearch.do");Action is defined:

        <action path="/initSearch"
                type="...list.InitSearchAction"
                name="productListForm"
                validate="false"
                scope="request"
                unknown="false"
                >
                <forward name="success" path=".search"/>
        </action>      .search is defined as
<definition name=".search" extends=".main">
        <put name="body" value="/list/index.jsp" />
</definition>The problem is when I set a paramter in initSearchAction like that:
req.setAttribute("handle",h);and try to read it next time when initSearchAction action is running, parameter h is null. I need that to pass handle to stateful session bean that holds important information that need to be static during a session. Can anyone tell me how to pass that handle in some other way?
regards
ania

now it works :)
I'm new to this things so I'm not familiar with all those sessions and requests...
thanks a lot
ania

To pass value between jsp page

How can I pass hidden's value from a jsp page to other?
My code is:
a.jsp
<h:form id="insUser">
<h:inputHidden id="flag" value="1"></h:inputHidden>
</h:form>
b.jsp
<%String flag="";
flag=request.getParameter("flag");
out.print("flag="+flag);
%>
b.jsp shows: flag=null
Could you help me?

Because this hidden field id is insUser:flag, but not just flag.
If you have subview or other naming container(s) around form, the id name might be even longer.
Sergey : https://ajax4jsf.dev.java.net/

How to send info from JSP page as email-body

Hi,
i have a JSP page that generates dynamically as a result of some query. I have a Button - "Send Email".
I want to send the information to the receipient thru email automatically on a button click,
All information is in the memory. How can we pick the info from memory and send it as a message thru email?
Pls help.
thanx & regards,
Shalini

create a servlet to send mail (use the JavaMail api) then Post the message to the servlet when you click on the button.
OR, put the message and any other data (like the email address) into the session, and then just call the servlet on click of the button, and have the servlet retrieve the information from the session.

Struts where are values stored between jsp pages?

Hi.I realize that this is forum is not specifically for struts but I thought someone might know the answer to my question.
I have run the following code. The code contains two JSPs that both get there values from the same ArrayList generated by the same actionform so contain the same data. Example.jsp is diplayed when the application is first run when submit is clicked newjsp.jsp is displayed.
If a value in the fields of example.jsp is changed and submit is clicked the altered value is also displayed in newjsp.jsp. I am confused by this as after submit is clicked ExampleForm.java method reset is called which returns the variable values to their original value but the newly entered value is still displayed. Please tell me how this works
Example.jsp
<%@ page language="java"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested"%>
<html>
    <head>
        <title>JSP for exampleForm form</title>
    </head>
    <body>
        <html:form action="/example">
            <h3>Use of nested:iteration tag</h3>
            <nested:nest property="department">
     DEP. ID: <nested:text property="id"/> <br />
     NAME: <nested:text property="name"/> <br /><br />
                <nested:iterate property="customers">
                    <b>Customer info</b><br />
          CUST. ID: <nested:text property="id"/> <br />
          NAME: <nested:text property="name"/> <br />
                </nested:iterate>
            </nested:nest>
            <br />
            <br />
            <html:submit/><html:cancel/>
        </html:form>
    </body>
</html>
Newjsp.jsp
<%@ page language="java"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested"%>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<html>
    <head>
        <title>JSP for exampleForm form</title>
    </head>
    <body>
        <html:form action="/example">
            <h3>Use of nested:iteration tag</h3>
            <nested:nest property="department">
                <table>
                    <nested:iterate property="customers">
                        <tr><td>Customer info</td>
                            <td>CUST. ID: <nested:text property="id"/> </td>
                            <td>NAME: <nested:text property="name"/> </td>
                        </nested:iterate>
                    </tr>
                </table>
            </nested:nest>
            <br />
            <br />
            <html:submit/><html:cancel/>
        </html:form>
    </body>
</html>
ExampleAction.jsp
package de.laliluna.tutorial.nested.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import de.laliluna.tutorial.nested.form.ExampleForm;
import de.laliluna.tutorial.nested.object.*;
import java.util.*;
public class ExampleAction extends org.apache.struts.action.Action {
    /* forward name="success" path="" */
    private static final String SUCCESS = "success";
    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        ExampleForm formBean = (ExampleForm) form;
        Department depart = formBean.getDepartment();
        ArrayList dep = (ArrayList) depart.getCustomers();
        Customer cust0 = (Customer) dep.get(0);
        System.out.println(">>>>>>>>>>>>>> customer.getName() = " + cust0.getName());
        System.out.println(">>>>>>>>>>>>>> customer.getId() = " + cust0.getId());
        Customer cust1 = (Customer) dep.get(1);
        System.out.println(">>>>>>>>>>>>>> customer.getName() = " + cust1.getName());
        System.out.println(">>>>>>>>>>>>>> customer.getId() = " + cust1.getId());
        Customer cust2 = (Customer) dep.get(2);
        System.out.println(">>>>>>>>>>>>>> customer.getName() = " + cust2.getName());
        System.out.println(">>>>>>>>>>>>>> customer.getId() = " + cust2.getId());
        return mapping.findForward("example");
ExampleForm.jsp
package de.laliluna.tutorial.nested.form;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import de.laliluna.tutorial.nested.object.*;
import java.util.ArrayList;
import java.util.Collection;
public class ExampleForm extends org.apache.struts.action.ActionForm {
    Department department;
    public Department getDepartment() {
        return department;
    public void setDepartment(Department department) {
        this.department = department;
    public void reset(ActionMapping mapping,
            HttpServletRequest request) {
        System.out.println("Entered action bean reset");
        Collection customers = new ArrayList();
        customers.add(new Customer(1, "Maria"));
        customers.add(new Customer(2, "Klaus"));
        customers.add(new Customer(3, "Peter"));
        department = new Department(1, "Department A", customers);
Customer.java
package de.laliluna.tutorial.nested.object;
public class Customer {
    private int id;
    private String name;
    public Customer() {
    public Customer(int id, String name) {
        this.id = id;
        this.name = name;
    public int getId() {
        return id;
    public void setId(int id) {
        this.id = id;
    public String getName() {
        return name;
    public void setName(String name) {
        this.name = name;
Department.java
package de.laliluna.tutorial.nested.object;
import java.util.Collection;
public class Department {
    private int id;
    private String name;
    private Collection customers;
    public Department() {
    public Department(int id, String name, Collection customers) {
        this.id = id;
        this.name = name;
        this.customers = customers;
    public Collection getCustomers() {
        return customers;
    public void setCustomers(Collection customers) {
        this.customers = customers;
    public int getId() {
        return id;
    public void setId(int id) {
        this.id = id;
    public String getName() {
        return name;
    public void setName(String name) {
        this.name = name;
}

Thanks for responding.
I set the debugger as you suggested and found that method reset is being called.
I did not write the whole of this program I was just playing around with and expanding a struts example I found on line.
http://www.laliluna.de/articles/struts-nested-iteration-tutorial.html
It contains the reset method.
I am interested to know how to reset the values. So am clearing the data after it has been submitted, just to reset. I assumed that once the new page was arrived at the values would be taken from the array.
I am quite new to struts and am not familiar with example_input.action and example.action I will look into these.

Send mail from JSP page

Hello,
can some one help me to send emails from a jsp page.
and if possible the source code of jsp or java...
Thanks !

read this:
http://www.jspinsider.com/tutorials/jsp/javamail/jspjavamail_1.view

Passing values between jsp pages

Hi all,
I am a newbie to jsp. I am trying to pass value from one jsp to another.
Let me post the code here and make my point clear. I have 3 jsp pages and am trying to get the value into my 3rd page that was in the first page.
This is my Test.jsp page:
<%@page contentType="text/html"%>
<html>
<head><title>Test JSP Page</title></head>
<body>
<%-- <jsp:useBean id="beanInstanceName" scope="session" class="package.class" /> --%>
<%-- <jsp:getProperty name="beanInstanceName" property="propertyName" /> --%>
Testing.. JSP Page
<FORM action='Response.jsp' method="POST">
<input type='Text' name='get_name'>
<input type="submit" value="Click Me">
</FORM>
</body>
</html>
This is my response.jsp page:
<%@page contentType="text/html"%>
<%@page import = "sun.jdbc.rowset.CachedRowSet" %>
<html>
<head><title>Response Page</title></head>
<body>
<%-- <jsp:useBean id="beanInstanceName" scope="session" class="package.class" /> --%>
<%-- <jsp:getProperty name="beanInstanceName" property="propertyName" /> --%>
Thank you... <%=request.getParameter("get_name") %>
// I want to pass this get_name to my next page, but since request.getParameter returns an object and not a string, how will I capture the value and pass it to my next page.
</body>
</html>
The 3rd jsp page is:
<%@page contentType="text/html"%>
<html>
<head><title>JSP Page</title></head>
<body>
// I am trying to get the value of the name here in this page.
<%-- <jsp:useBean id="beanInstanceName" scope="session" class="package.class" /> --%>
<%-- <jsp:getProperty name="beanInstanceName" property="propertyName" /> --%>
</body>
</html>
Your help is appreciated.
Thanks

Hi,
Thanks for the reply, it works. I was wondering whether this is an efficient way of doing this. What I want to do further is to setup a connection to a database and use the value I got from my previous page to query the DB and get the results and display.
I have see some code in the java website and a lot of people do by writting a bean /class(believe bean is just a class) and then importing it and do the things that way. I have good knowledge of OO and Java as a language and would definitely love to do it this way.
What i think i am missing is the basic idea to doing this way. So if you could let me know how to do this using java classes I would really appreciate it. If its too much to explain can u point to some good source(URL's) that explain's this. I have searched on this and all i find is code with no good explaination.
Thanks a lot

Send string between JSP pages

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