Previous Page's URL in JSP/JSTL

Dear Sirs,
Could you please advice me how I could get the previous page's url( ie, the page the the user was visting before coming to the current page) in JSP/JSTL..
Thank you in advance

You mean the referrer? You can just get it from the HTTP header.
String referrer = httpServletRequest.getHeader("referer"); // Yes, with the legendaric misspelling.

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Next page previous page using JDBC in JSP

Hello,
I wanted to know how the previous page and next page is developed when an user serches for a particular string in a web site.They are restricting the database to display only 10-25 rec per page and giving an option like next, when an user clicks next the next 10-25 rec are shown how is this done.
Please e-mail me the source code if availabale to [email protected]
Thanks in advance
Anu
null

Hi Anu,
visit technet.oracle.com site, go to sample section, in that choose JDBC section, here you will find example similar to your problem which you have describe below -
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Anu:
Hello,
I wanted to know how the previous page and next page is developed when an user serches for a particular string in a web site.They are restricting the database to display only 10-25 rec per page and giving an option like next, when an user clicks next the next 10-25 rec are shown how is this done.
Please e-mail me the source code if availabale to [email protected]
Thanks in advance
Anu
<HR></BLOCKQUOTE>
null

How to go to previous page in JSP

I have designed a page with database in JSP,
I am having 3 textboxes on the form where user can enter ID,name and address.
Suppose user enters values such as ID="xyz" name="atm" address="ksh". Then it should prompt "Enter numerical values" and it should remain on the same page. I tried this with the "response.sendRedirect(url)" method ,Its working but the the textboxes are becoming empty.
I want such that the textboxes should not be empty ,they should contain the previously entered values.
Means I want to call "back" page or previously visited page.
It can be done using JavaScript but I want to do it in JSP.
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How to call back page in JSP

1. U need to preopulate the data in ur jsp using form beans or from request, session....
or.
2. Use javascript to do the validation
Either of them will solve ur problem

URL showing previous page

Hi,
I am using JDeveloper 10.1.3 and Oracle 10g
I have an application that shows a login page, with the url as xxx/globalHome.jsp
Once the user has entered in the correct details i have created a jsf Navigation to a detailpage where user information is show.
However in the URL the it still displays xxx/globalHome.jsp even though i have now been taken to the detail.jsp
From the detail page if I then navigate to another page by a click of a button say to a contactUs page the URL then says xxx/detailPage.jsp
Its like the URL that displays is the one from the previous page.
This is affecting our analysis of which user has visited which page.
Please could anyone offer any help?
thanks

if you use faces navigation rules, you can try adding redirect tag under the navigation rule in faces-config.xml.
Incase of using task flows, select the view inside the task flow and set the Redirect property to true.
Sireesha

The main part of the safari page is grey and won't respond/can't type in any commands. I can move back through the previous pages, and even open new ones via the URL, but can't get onto the main part of the page and I can't get onto the 9 page option. !?

The main part of the safari page is grey and won't respond/can't type in any commands. I can move back through the previous pages, and even open new ones via the URL, but can't get onto the main part of the page and I can't get onto the 9 page option. !?
Help, please.

Try clearing Safari's cache : Settings > Safari > Clear Cache (and Clear History)
If that doesn't work then try closing Safari completely and then re-open it : from the home screen (i.e. not with Safari 'open' on-screen) double-click the home button to bring up the taskbar, then press and hold any of the apps on the taskbar for a couple of seconds or so until they start shaking, then press the '-' in the top left of the Safari app to close it, and touch any part of the screen above the taskbar so as to stop the shaking and close the taskbar.
A third option is a reset : press and hold both the sleep and home buttons for about 10 to 15 seconds (ignore the red slider), after which the Apple logo should appear - you won't lose any content, it's the iPad equivalent of a reboot.

How to remember previous page in a JSP page that's reloaded

I have a JSP page where i want a "back" link that brings me back to the previous page. The problem is, some actions on this page will call a servlet that reloads my page, so using history.back() brings me back to the previous version of the same page.
What is a good way to solve this in a servlet/JSP application?

I just wrote a simple bean with a few methods that i frequently use.
the bean is session scope, and you just call something like
setCurrentPagePath(), and you build your link up by calling getCurrentPagePath()
before settings the new one.

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Hi,
I have a jsp page, which when user come in to the page, the page will call a URL without direct the current jap page the URL. This URL will only help me to do on something in the backend. Anyone know any method that i can use to call the URL?
Thanks a lot

Doeas AJAX rings a bell? ;-)
https://blueprints.dev.java.net/bpcatalog/ee5/ajax/usingAJAXwithoutJSF.html

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in my alv report i require the output such that
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would anybody please help me out.
thanks and regards
papps

In your servlet you could set the arraylist into the HttpRequest object so that it is visible in the JSP you are forwarding to.
RegistrationDAO rdao=new RegistrationDAO();
ArrayList arr1=rdao.getsearchresults(af);
request.setAttribute("someArrayList",arr1);Then in the JSP you could use JSTL 1.1 and jsp:useBean tag to access the ArrayList like this
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<jsp:useBean id="someArrayList" class="java.util.ArrayList" scope="request"/>
<c:forEach var="currentRecord" items="${someArrayList}">
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</c:forEach>I guess you are using struts, so instead of JSTL there might be some struts tags that do the same as above JSTL tags. You can research further on that.
If you can't use struts tags or JSTL tags then you could write it with JSP scriptlets (highly discouraged option).

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I have two JSP pages first.jsp and second.jsp the user starts at first.jsp and clicks the submit button which then takes the user to second.jsp where the users information is saved in a database. I want to know how to go back to first.jsp from second.jsp after the users info has been saved? I have been able to get the previous pages url information put I don't know what to do with it. I know there is a jsp:forward but don't think this can help me. PLEASE someone help me I am stuck and need to move forward.
thank you

Why do you think that jsp:forward will not fit your requirement? An alternative is to use sendRedirect()

Redirect page with POST method in JSTL

how to redirect page with POST method in JSTL.
below is the code that i make, but the page redirected with GET method,
so, the URL shown as http://localhost:8080/tes2/coba2.jsp?nama=saya
how to hide the parameter, so it didn't show at the URL..??
anybody help me..??
server1 -> coba1.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<html>
<head>
<title>coba1</title>
</head>
<body>
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<c:param name="nama" value="saya"/>
</c:url>
<c:redirect url="${displayURL}"/>
</body>
</html>server2->coba2.jsp
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<html>
<head>
<title>coba2</title>
</head>
<body>
<c:forEach items="${param}" var="currentParam">
        <li><c:out value="${currentParam.key}" />
            = <c:out value="${currentParam.value}" /></li>
      </c:forEach>
</body>
</html>

There are other two way communications methods as well. One such would be:
Server1Page1: Take response with parameters. Use HttpURLConnection to make a request to DataInputServlet
              on Server2 and send the parameters there with a POST operation
Server2DataInputServer: Takes request with data in it and starts a new session. Puts the data into the session and
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Server1Page1: Reads the response from the DataInputServer (the session id) and generates a sendRedirect to
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Server2Page1: Gets a request from the client with the session id, and pulls the parameters out of the session. Then
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JSP/JSTL & XML

I am trying to have JSP pages parse and read an XML file and then return some data in an HTML table. I'm using the JSTL libraries and have a basic understanding of them, but I apparently need help.
My first page just gets the value and passes it to the second page. The second page handles all of the processing. Here is my JSP page:
<%@page contentType="text/html" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>
<%@include file="index.jsp" %>
<% String clientID = request.getParameter("enteredID"); %>
<c:import url="npiXMLTest5.xml" var="doc" />
<x:parse varDom="dom" doc="${doc}"/>
<x:set var="srcCID" select="string($dom/npiNumbers/client/clientNum)" />
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>NPI XJTL Test</title></head>
<body>
<c:set var="CID" value="<%= clientID %>" />
<h2>NPI XJTL Test Page</h2>
<table border="1">
<tr><th>NPI Number</th><th>Description</th></tr>
<c:choose>
<c:when test="${CID}=${srcCID}">
<x:forEach select="$dom/npiNumbers/client/npiNum" var="$n">
<tr><td><x:out select="$n/npi" /></td><td><x:out select="$n/desc" /></td></tr>
</x:forEach>
</c:when>
<c:otherwise>
There is an error with your coding
</c:otherwise>
</c:choose>
</table></body></html>My XML structure is as follows:
<npiNumbers xsi:schemaLocation="http://localhost/namespace NPI_XSD5.xsd" xmlns="http://localhost/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<client>
<clientNum/>
<clientName/>
<npiNum>
<npi/>
<desc/>
</npiNum>
</client>
</npiNumbers>I am trying to return the results of the <npiNum> element (which can have multiple values) - <npi> and <desc> - in a table based on the <clientNum> element. I try to evaluate the page variable with the xml element. If it matches, I will return a table. A client can have multiple <npiNum> elements, so the construction of the table is in the x:forEach loop.
I think my problem is getting the variable from JSP to compare against the <clientNum> element in the XML file.
Any ideas?

I think your problem is less JSP/JSTL and more querying the XML.
You are trying to "select all <npinum> elements from a client based on clientnum"
I am far from an expert on XPath, but I think the following query is what you are after: "/npinumbers/client[clientNum=????]/npiNum"
To do that with JSTL you would replace ???? with $param:enteredId or $CID (equivalent in your example)
Here is the resulting JSP page.
<%@page contentType="text/html" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>
<c:import url="npiXMLTest5.xml" var="doc" />
<x:parse varDom="dom" doc="${doc}"/>
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>NPI XJTL Test</title></head>
<body>
<c:set var="CID" value="${param.enteredId}" />
<h2>NPI XJTL Test Page</h2>
<table border="1">
<tr><th>NPI Number</th><th>Description</th></tr>
<x:forEach select="$dom/npiNumbers/client[clientNum=$CID]/npiNum" var="n">
<tr><td><x:out select="npi" /></td><td><x:out select="desc" /></td></tr>
</x:forEach>
</table>
<hr>
<form>
<input type="text" name="enteredId"/>
<input type="submit">
</form>
</body></html>I made up the following test file to use with it. I don't know if it was exactly what your requirements are, but it was a best guess based on your info.
<npiNumbers>
     <client>
          <clientNum>42</clientNum>
          <clientName>Ford Prefect</clientName>
          <npiNum>
               <npi>123</npi>
               <desc>life</desc>
          </npiNum>
          <npiNum>
               <npi>234</npi>
               <desc>universe</desc>
          </npiNum>
          <npiNum>
               <npi>456</npi>
               <desc>everything</desc>
          </npiNum>
     </client>
     <client>
          <clientNum>666</clientNum>
          <clientName>Satan</clientName>
          <npiNum>
               <npi>333</npi>
               <desc>Baby Devil</desc>
          </npiNum>
     </client>
</npiNumbers>Cheers,
evnafets

Problem in how to stop displaying previous page after Logout

<%
// I invalidate all my session when i logout and comes on Login.jsp page but if i go back still it open
previous pages
How i can stop these
i am adding these line in avery jsp page
1)
response.setHeader("pragma","no-cache");
response.setHeader("Cache-Control","no-cache");
response.setHeader("Cache-Control","no-store");
response.addDateHeader("Expires", 0);
response.setDateHeader("max-age", 0);
response.setIntHeader ("Expires", -1); //prevents caching at the proxy server
response.addHeader("cache-Control", "private"); //IE5.x only;
%>
2) and in Logout.jsp
response.sendRedirect("Login.jsp");
session.invalidate();
session.removeAttribute("viv");
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Hi sreenathreddy.
I am doing exactly what you are talking about.
On load of each jsp page, I check to see if I am still in session. If i am not, i redirect the user to the login page saying his session has expired.. This works perfectly fine in the sense that after I log out, if I directly type in the url or click on any other link from history, it redirects you to the login page.
But my problem sitll remained that after logging out, if i clicked the back button, it would still take me to the previous page even though none of the links on that page would work.
So i added all the response.SetHeaders that are mentioned in this discussion.
Now the scenario is such that, when i press the back button after logging out, it tells me that the page has expired and i have to resubmit the form.
There are two problems with this
1. at this point , if i refresh my page, it still gets the details from the server and even though i am invalidating the session and all the user details, and checking to see if the session is invalidated,it still somehow manages to get all the details(i dont know where that info is stored)
2. even if the person has not logged out. ie in the middle of a perfectly valid session and clicks on the back button, he is warned that the session has expired.
please do reply
thanks
ritesh

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CF Set form.variable for query and Next/Previous pages error

I have a CF form with a select that posts to a CF "action" page.
On the action page I: CFSET ItemNumber=#form.ItemNumber#
I CFOUTPUT the 'ItemNumber' into the CFQUERY (which is an Inner Join dependant on the '#ItemNumber#')...
All of the above works just fine and displays the database fields in color alternating rows, per the rest of the code.
Here's the problem:
I'm displaying 40 rows on a page per "Next and Previous" code. (CFPARAM name="start" default="1" and CFPARAM name="disp" default="40" along with the rest of the NextN code in the header and body). This does display 40 rows on the page and puts a link at the bottom of the page "Next 40 Rows", etc.
Note: I'm only querying the database once and using the query (query name="data") to populate the table rows And the NextN code (CFOUTPUT name="data") And (CFIF start + disp GREATER THAN data.RecordCount, etc)...
The problem happens when you click the "Next 40 Rows" link to display the 2nd page of rows. Since (I'm assuming) this NextN code is 're-reading' the same page from top to bottom, an error is thrown when the code tries to read the CFSET ItemNumber=#form.ItemNumber# at the top of the page.
With the #form.ItemNumber# on this action page Originally coming from the previous posting of the form to this action page, when the "Next 40 Rows" link is clicked and the NextN code re-reads this action page - the CFSET ItemNumber (#form.ItemNumber) is not getting populated and throws the error...
I hope I've not made this sound confusing.
I can get the NextN code to work when I'm just querying the database without "flying in" a form variable. But when I CFSET a variable (#form.ItemNumber#) that is inserted into the query, the second page of the NextN throws an error and doesn't display.
I would include the page code here but it would be fairly lengthy and, as well, the NextN code is a 'standard' CF code -- I've narrowed the problem down to the above "Element is undefined" (when the page tries to reload from the "Next 40 Rows" link) and am hoping there's a simple fix or another way to display the records in Next and Previous pages.
Thanks to anyone in advance for shedding light on this.
- e

Thank you for the reply, Owain.
Yes - The Next/Previous at the bottom of the page are hyperlinks.
<a href="ThisPage.cfm?start=#Evaluate("start + disp")#">
The following is at the top of the page (and is the variable from the form that I CFOUTPUT in the query):
<cfparam name="ItemNumberDropdown01" default="">
<cfset ItemNumber = #form.ItemNumberDropdown01#>
The error report showed that the "Next Page" hyperlink was reading an undefined variable... although when the "action page" first opens from the form posting to it, it populates the CFSET just fine (per the cfparam and cfset above)... As you mention, the hyperlink clearing the form scope is what causes the error in trying to display the next set of records...
The form page and the 'action page' are both secure pages with an application page setting the session, etc. Am I at risk in using an URL scope?
Where would this URL scope be put? (The href is shown above - would the URL scope go in this? - How would this be written?)
The CFPARAM and CFSET would still exist at the top of the 'action page' and still throw an error wouldn't it or would this be replaced with something else to read the form.variable for this 'first' action page to be displayed?
Thanks again for the 'education' on this...
- ed

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I class path the following libs.
commons-beanutils-core-1.8.0.jar
commons-digester-1.8.jar
commons-fileupload-1.2.1.jar
commons-io-1.2.jar
commons-logging-1.1.1.jar
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jhighlight-1.0.jar
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richfaces-impl-3.3.0.GA.jar
richfaces-ui-3.3.0.GA.jar
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Also I try to deploy without using some jar files already exists in application server.
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<context-param>
<param-name>org.ajax4jsf.VIEW_HANDLERS</param-name>
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<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
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<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
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<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
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<servlet-name>Faces Servlet</servlet-name>
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Please
h5.MUTU

So why didn't you think that the JSP forum here wasn't a good place to ask JSP questions like this one?
You can use <c:for-each> with a List. That's how it's designed. I don't understand why you say you can't. Perhaps you were confused by the SQL tags in JSTL. But anyway, you should just return a List from your EJB and forget about using obscure internal JSP classes.

Previous Page's URL in JSP/JSTL

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