Values disappearing in my JSP page

HI Guys
i am stuck with a problem for which i need your help.i will list my query below
In my JSP i am having a combo box from which i can select values needed for data manipulation and navigation to other page.Firstly i select a value from the combo box in my main JSPand do necessary processing.After navigation to other JSP pages i have a condition that if input successful then return to the main JSP other wise to someother jsp.
Here my problem is that when on successful manipulation when i come back to the main JSP all the values in the combo box disappear. i know that i need to set the values before coming back ,i have done that but i am not able to figure out what is happening still values disappear.
please let me know what i shoud do to resolve this issue.waiting for your replies.
Regards
Vikeng

hi :-)
set the value of firstname after submit
<%
session.setAttribute("firstname", txtFirstname);
%>retrieve the value of firstname in the submitted page. Note about the scenario when the user first visit the site ;-)
String firstname = session.getAttribute("firstname");put the value of firstname on our textbox ;-)
<input type="text" name="txtFirstname" id="txtFirstname" value="<%=firstname%>" />hope you get the idea, i got to go home for now friend. goodluck ;-)
regards,

Similar Messages

Values disappearing from my JSP page

HI Guys
i am stuck with a problem for which i need your help.i will list my query below
In my JSP i am having a combo box from which i can select values needed for data manipulation and navigation to other page.Firstly i select a value from the combo box in my main JSPand do necessary processing.After navigation to other JSP pages i have a condition that if input successful then return to the main JSP other wise to someother jsp.
Here my problem is that when on successful manipulation when i come back to the main JSP all the values in the combo box disappear. i know that i need to set the values before coming back ,i have done that but i am not able to figure out what is happening still values disappear.
please let me know what i shoud do to resolve this issue.waiting for your replies.
Regards

hi :-)
1. put the value in session
or
2. after successful submission, pass the submitted value in the previous page
Please dont cross post, thank you :-)
http://forum.java.sun.com/thread.jspa?messageID=4487269#4487269
regards,

Display values from database in jsp page

Hi,
I need to display a list of options with checkboxes in a jsp page .The values are retrived from DB.
formBean fb=new FormBean(request)
<Input type="checkbox" name="xyz" value="<%=fb.getFormdata( "xyz")%>">
should this"xyz" be the name of the column in the DB table?

This is my FormBean
public class FormBean {
HttpServletRequest _request;
public FormBean(HttpServletRequest request) {
_request = request;
public String getFormData(String abc) {
return getFormData(abc, true);
public String getFormData(String name, boolean filter) {
String value = null;
if (_request != null) {
value = _request.getParameter(abc);
if (value == null) value = "";
if (filter) {
value = Utils.filter(value);
return value;
* "Clears" parameters. Useful if you do wnat a form initialized with blanks rather than
* current values;
public void clear() {
_request = null;
}

Passing value from JApplet to Jsp page

Hello,
How can i pass a value that is entered in a JTextArea in a JApplet and fetch the entered value from JTextArea and display it in a JSP page.
It would be kindful if someone could help me with this problem.
Regards
Sanam

hello,
Thanks for ur reply,
Sorry to say that i did not understand where to implement ur code in my code.
Below is my code could u plz tell me where do i put in ur code.
My code works fine u can compile it.
javac *.java;
appletviewer BIA.java
Can u plz tell the JSP code.
It would be very kindful if u could please help me.
Thank you
//**************** BIA.java***********
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.util.Vector;
import java.applet.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
import java.lang.reflect.Field;
<applet code = "BIA" width = 500 height = 500>
</applet>
public class BIA extends JApplet
     public static Container cp;
     public BIAP panel;
     public TB action;
     public void init()
          panel = new BIAP();
          action = new TB(panel);
          action.setLayout(new GridLayout(2,2));
          cp = getContentPane();
          cp.setLayout(new BorderLayout());
          cp.add(action, "North");
          cp.add(new JScrollPane(panel));
          repaint();
//******************* BIAP.java*************
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.util.Vector;
import java.applet.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
import java.lang.reflect.Field;
class BIAP extends JPanel
     public BIA bia;
     public BufferedImage image;
     public double scale, scaleInc;
     public JTextArea jt;
     public BIAP()
          loadImage();
          setBackground(Color.white);
          scale = 1.0;
          scaleInc = 0.01;
          setLayout(null);
          jt = new JTextArea("Welcome");
          jt.setBounds(0,0, 90,30);
          add(jt);
          repaint();
     protected void paintComponent(Graphics g)
          super.paintComponent(g);
               Graphics2D g2 = (Graphics2D)g;
          g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                    RenderingHints.VALUE_INTERPOLATION_BICUBIC);
          int w = getWidth();
          int h = getHeight();
          int imageWidth = image.getWidth();
          int imageHeight = image.getHeight();
          int x = (w - imageWidth)/2;
          int y = (h - imageHeight)/2;
          g2.drawImage(image, x, y, this);
     private void loadImage()
          String fileName = "Terragen___Losing_Grip_by_Blackheart6004.jpg";
          try
          URL url = getClass().getResource(fileName);
          System.out.println(url);
          image = ImageIO.read(url);
          catch(MalformedURLException mue)
          System.out.println("url: " + mue.getMessage());
          catch(IOException ioe)
          System.out.println("read: " + ioe.getMessage());
     public Dimension getPreferredSize()
          Dimension d = new Dimension();
          d.width = (int)(scale * image.getWidth());
          d.height = (int)(scale * image.getHeight());
          return d;
     //method used for Zoom Operation
     public void setScale (int inc)
          scale += inc * scaleInc;
          revalidate();
          repaint();
//************************** TB*********************
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.util.Vector;
import java.applet.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
class TB extends JPanel
     BIAP panel;
     JButton save = new JButton("Save");
     public TB(BIAP biap)
          panel = biap;
          ActionListener sa = new ActionListener()
               public void actionPerformed(ActionEvent e)
                    JButton button = (JButton)e.getSource();
                    if(button == save)
                         //panel.fileSave();
          save.addActionListener(sa);
          add(save);
}

How to get the URL parameter value when navigating from JSP Page to portal

Hi All,
I have web Dynpro application with one button, while clicking that button It will navigate to JSP page as external window. In the JSP page I have a input field and Button.
In the JSP page input field I will enter some values and press submit button, it will navigate to Portal page by passing some URL parameter with values.
Once user entering to portal by default WD page displayed, the same WD page I try to get the URL Parameter which I have passed from JSP page, but I am not able to get the URL parameter value.
If same application running in without portal, I can able to get the URL parameter values. I am getting the URL parameter by interface view default inbound plug parameter.
How do we resolve this problem?
Regards,
Boopathi M

Hi
Please try these link might helpful for you
1.[How to call WebDynPro application from JSP |/thread/452762 [original link is broken];
2.[How to get the previous page url from abstract portal component? |/thread/1289256 [original link is broken];
3.[how to launch and pass a parameter |/thread/5537 [original link is broken];
Best Regards
Satish Kumar

Read a property file value and display in jsp page

I need a solution for the below mentioned scenario,
I want to read a value from the property file in JSP page.
For Example, Let us have a property file called A.properties, in the file, we have a value, username = Sam.
I want to bring this value in the jsp page.
Please assist in this issue.
thanks in advance.

If you are using struts, then you have to first load the taglib like
<%@ taglib uri="/WEB-INF/strutsresources/struts-bean.tld" prefix="bean" %>and then access the particular property like
<bean:message key="welcome"/>Also, you have to define <message-resources> in struts-config. Though I am not into struts for year now, So, please confirm the code.

How to get the database value without submitting the jsp page

Hi,
I have a form that has many fields (textbox/listbox). when user enter/change a value in the first textbox, I need to pass this value to the database to check whether it exist and get the other values to be displayed to other fields in that form (i cannot get the javascript value to be pass to jsp without reload/refresh/submit. But, I need to get the user entered value, so I thought of hidden popup, iframe, etc but not sure how I could apply and which best suit this case). If I submit the page then I can easily get the value thru 'request.getParameter("fieldname") but cannot use this because I cannot submit the page.
Pls help and possible provide me with the sample coding
Thanks

The best way for you is surely AJAX. But there is another way to stay compatible with older browsers:
Since the default method a browser supposed to get data is refresh, there is nothing unnatural in it. Browsers are optimized to refreshes, like cached images, etc..
So for these step-by-step things, you need to roll forward your data from page to page, and make the page to respond according the data it actually have. This can be easily achived with type="hidden" input fields in a form: the user will send you back all the data. Optionally you may show him the data you already have as visible text too.
A more generalised way to "pull" the data: you make a whole page you include every time you need an additional data. This page will receive 2 parameters from where you've included it. This 2 parameters are each indexed arrays with the datas you have to pull in (here the default value), and you need to push forward. Optionally there is a 3rd parameter, the url it have to return (as the form's action property).
And for them who now say that it would me more culture way to store this data in the session: Beware! Common mistake: Sessions are to store data about the user itself, not the datas for the next page! You never know what will be the next page! The user click some backward button and refresh button, and depending on your script, it may go stupid! Ok, not all the codes, but I've seen some. It's ok to store a sent file (fx. image) on the server, but always think the evil refresh and back buttons!

How to restrict decimal values in Project Management JSP pages

Hi,
By default, the values of effort % complete, % complete, Earned Value etc show 8 digits after decimal in Progress Update Overview page.
We want to round off these values to two digits.
How can this be achieved? Please suggest.

Hi 977941,
Please set the following properties for a field and check for decimal point
Action Type : firePartialAction
Event : validateInteger
Create a controller and add the following in Process From Request :
if ("*validateInteger*".equals(pageContext.getParameter(EVENT_PARAM))) // identifier should be same as what you have set .
get the value here and check if the decimal exist and throw exception message .
Thanks
Sandeep

Retrieve values from a table of a JSP page in Servlet.

Hello all,
I am new in JSP servlet world, I want to create a grid on JSP page using Servlet.
Suppose i have some records in a JSP page and This JSP page will display these records in a tabular form. And, on a button click that table data should be
accessible in servlet,
Now, How can i traverse among all the rows of that table of JSP page in servlet. or How can i retrieve a specific cell record of that table of JSP page in servlet.
Can anyone please answer this.
Thank you and regards.

Hi,
Create in your HTML form inputs with the same name i.e.:
<input name="a[]" value="2" >
<input name="a[]" value="9" >
In your jsp page use :
String Values[] = request.getParameterValues("a[]") ;
This will give you a string array of two elements.
for (int x = 0; x < Values.length; x++)
System.out.println(Values[x]) ;
}Will print :
2
9
Hope this helps.
Bill Moo

How can we pass selected combo box value to a jsp pag?

Hi All,
I want to pass selected combo box value to a same jsp page's variable.
i am using javascript
<select onchange="this.options[this.selectedIndex].text">
</select>
this selected value should be invoked for a jsp page's variable.
Excepting for favorable reply
Vansh

select2.jsp
<script>
function x()
alert(document.f.s.options[document.f.s.selectedIndex].text);
document.f.submit();
</script>
<body>
<form method="get" name="f" action="select2.jsp">
<select name="s" onchange="x()">
<option checked>--select--</option>
<option value="1"> vijay </option>
<option value="2"> kumar </option>
</select>
</form>
</body>

Passing values to current jsp page to another jsp page in ADF

Hi All,
In my adf application i want to get the appropriate field value of selected row and i want to send that value to the another jsp page from curent jsp page when will we click on button or link.How can i do this.Please give me your valuable suggestions.I'm using jdeveloper 11.1.1.5 version. Thanks!

Hi,
Thanks for the reply. I didnt understand the execution of the process. can you please send any sample for text like hello world is passing to second jsp page. or any simple sample?

I want to post the values of the form in the same Jsp Page

I want to post the values of the form in the same Jsp page.

Was that a question? Or are you just informing the world of your grand intentions?
But yeah, all you need to do is direct your action to the same page you're in. So, if this is your foo.jsp, it'd be something like...
<%
if(request.getParameter("bar") != null) out.println("Hello");
%>
<form method="post" action="foo.jsp">
<input type="text" name="bar" value="baz">
<input type="submit">
</form>When you submitted your form, it would post the value to the same JSP page as you're already in, and print out Hello to the screen. "Hello" would not print out on the first visit, as the request would obviously not contain the parameter "bar" yet.

Values on the jsp page not loading after refresh

Hi All,
I have a problem in getting the values back onto the jsp page after a refresh. After the first refresh i get null values.
Let me know what i should use: is it 1. request 2. application or 3. session scope? I have to keep my application running for ever (as long as the server is running) refreshing every 3 minutes. So i used application scope but in vain.
Also i am using requestDispatcher and forwarding the req,res. I came to know that this method has some problems if we use request attributes. Do i need to use a send.Redirect instead?
Let me know the correct procedure.
Thanks in advance.

Gouri-Java wrote:
Hi All,
I have a problem in getting the values back onto the jsp page after a refresh. After the first refresh i get null values.
Let me know what i should use: is it 1. request 2. application or 3. session scope? I have to keep my application running for ever (as long as the server is running) refreshing every 3 minutes. So i used application scope but in vain.
Also i am using requestDispatcher and forwarding the req,res. I came to know that this method has some problems if we use request attributes. Do i need to use a send.Redirect instead?
Let me know the correct procedure.
Thanks in advance.r u forwarding request to same page. ?
try using sendRedirect with URL rewriting:
for eg .
response.sendRedirect("/myPage.jsp?id="+idValue+"");
and access id on page submit.
as
request.getParameter("id");
This should work .
Edited by: AmitChalwade123456 on Jan 6, 2009 7:10 AM

Adding my jsp page for administration

can i attach my jsp page to manage users and groups by admin, instead of 9IAS portal page to manage users and groups. if i can use it , then how can i map the values entered in my jsp page with the 9IAS portal page for creating and managing users and groups.

Then your question was wrong. You asked how to include package. The solution to that is that you don't need to add the import since it happens automatically.
Your actual problem was that the package was not found. If you'd mentioned that earlier, someone could've suggested that you check to see if you'd added the API library to your classpath and you'd have got your answer faster.
You should state your exact problem and post the relevant stack trace and exceptions and code if any.
People on the forum help others voluntarily, it's not their job.
Help them help you.
Learn how to ask questions first: http://faq.javaranch.com/java/HowToAskQuestionsOnJavaRanch
----------------------------------------------------------------

Database connection to jsp page

I have a data entry form in HTML and done validation in javascript.
From that form the values entered by the user, is displayed on JSP page by method.
<%=request.getParameter(" ")%
MY problem is:
i want that the values shown by the jsp page, is submitted or saved into database automatically, when i click submit button on the page.
How can i do this.
I have to use jdbc driver to make a connection for the database.
plzz help me, as it is very urgent.
my jsp page is as follow:
<%@ page language="java" import="java.sql.*" %>
<html>
<head>
<title></title>
<body>
<%
try {
//Load the jdbc driver
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
//Create a connection object
Connection con=DriverManager.getConnection("jdbcdbc:jspsql","java","java");
System.out.println("got connection");
// Create a statement object and call its executeUpdate method to insert a record
Statement s=con.createStatement();
String sql = "INSERT INTO Gl_Mast VALUES ('1','ABHI','120','520')";
s.executeUpdate(sql);
// Step 4. Use the same Statement object to obtain a ResultSet object
sql = "SELECT GL_CODE, GL_DESCR FROM Gl_Mast";
ResultSet rs = s.executeQuery(sql);
while (rs.next()) {
out.println(rs.getString(1) + " " + rs.getString(2) + "<br>");
rs.close();
s.close();
con.close();
catch (ClassNotFoundException e1) {
// JDBC driver class not found, print error message to the console
System.out.println(e1.toString());
catch (SQLException e2) {
// Exception when executing java.sql related commands, print error message to the console
System.out.println(e2.toString());
catch (Exception e3) {
// other unexpected exception, print error message to the console
System.out.println(e3.toString());
%>
<form name="display" ACTION="" >
<table width="100%" border="3">
<tr>
<TD COLSPAN=5><center><h3><b><i>GL MASTER INFORMATION</i></b></h3></center></TD>
</TR>
<tr>
<th>Code No.</th>
<th>Description</th>
<th>Dr. Amount</th>
<th>Cr. Amount</th>
<th>Type</th>
</tr>
<tr>
<td> <%=request.getParameter("code")%></td>
<td> <%=request.getParameter("Description")%></td>
<td> <%=request.getParameter("DrAmount")%></td>
<td> <%=request.getParameter("CrAmount")%> </td>
<td> <%=request.getParameter("type")%></td>
</tr>
</table>
<p>
<INPUT TYPE="submit" VALUE="SAVE" >
<INPUT TYPE="button" VALUE="BACK" onClick="history.go(-1)">
</body>
</html>
thanx..
abhijit

X POST

Values disappearing in my JSP page

Similar Messages

Maybe you are looking for