Greetings,
Trying to assign a javabean property and get it in another page with <jsp:getProperty ....
I can get it in the same page, but in different page it is always null.
scope = "session" is in the jsp:usebean tag.
I am still trying to do this as an alternative to passing query string in URL...
Any advice greatly appreciated.
Thanks,
JK
3  3347 
Greetings,
Trying to assign a javabean property and get it in another page with <jsp:getProperty ....
I can get it in the same page, but in different page it is always null.
scope = "session" is in the jsp:usebean tag.
I am still trying to do this as an alternative to passing query string in URL...
Any advice greatly appreciated.
Thanks,
JK
And why not use request.getParameter()
or request.setAttribute() with request.getAttribute?
They are especially made for passing values values between pages
I am opening a jsp website via Delphi code and passing in parameters in the query string of the URL like this:
http://sabre/fwb_live/fastweb/html/PreLoad_11_3.jsp?custname=lctest&login=logintest
This works fine – BUT I really don’t want all those values to be visible because of security concerns, so I am trying to “hide” the custname parameter by using a java bean, so I can reference it later. (I am able to reference that value in the same page.) I am getting the value by using request.getParameter.
Then I redirect to a new html page with the first page's onload event without including the custname parameter in the URL The new page is index.html (which uses frames). One of the frames’ src is nav.jsp. In nav.jsp I am trying to get the value back from the bean so I can put it in an XML document and send it on it’s way, but the custname is always NULL! I cannot send you all the code as there are lots of dependencies, but am sending the most pertinent parts.
If you have any ideas what I am doing wrong, or if you know of a better way to do this, I would be most grateful for advice.
I am using Internet Explorer 5.0 on a Tomcat 3.0 webserver.
Thanks very much,
Judy
--------------------
Excerpts from JspUIHelper:
package com.medcmp.fastweb.view;
import com.medcmp.log.Log;
import com.medcmp.log.Priority;
import com.medcmp.util.ComponentHelper;
import com.medcmp.util.StringHelper;
import java.rmi.RemoteException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
public class JspUIHelper
{
(…skipping some…)
public String getCustname() {
return(custname);
}
public void setcustname(String custname) {
this.custname = custname;
}
---------------------------------------
Entire contents of PreLoad_11_3.jsp:
<%@ page errorPage="../../fastweb/jsp/JspException.jsp" import="java.util.*" %>
<jsp:useBean id="myJspUIHelper" class="com.medcmp.fastweb.view.JspUIHelper" sco
pe="application" />
<jsp:setProperty name="myJspUIHelper" property="custname" param="custname" />
<%
// add variable to this list
String id = "";
// add an if statement to map it in
if ( request.getParameter("LogonIDIn") != null ) {
id = request.getParameter("LogonIDIn").trim();
};
String custname = "";
if ( request.getParameter("custname") != null ) {
};
String login = "";
if ( request.getParameter("login") != null ) {
login = request.getParameter("login").trim();
};
// append it to the URL string
String x = "index.html?LogonIDIn=" + id + "&login=" + login;
%>
<HTML>
<HEAD>
<script language=javascript type="text/javascript">
function fwd() {
location.href = "<%=x%>" ; ---if I comment out this line I can see the property from the getProperty call below so I know the Bean is working
};
</script>
</HEAD>
<BODY onLoad = "fwd()">
<jsp:getProperty name="myJspUIHelper" property="custname" />
</BODY>
</HTML>
-----------------------------------------------------------
Excerpts from nav.jsp:
<html><head>
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1">
<jsp:useBean id="myJspUIHelper" class="com.medcmp.fastweb.view.JspUIHelper" />
<title>Channels</title>
<SCRIPT LANGUAGE=JAVASCRIPT1.2 TYPE="TEXT/JAVASCRIPT">
var preload = "";
var ppathUrl = "";
var cnam = "";
if (top.parent.location.search.length > 0) {
preload= top.location.search.slice(0);
}
cnam = "<%= myJspUIHelper.getCustname() %>";
ppathUrl = "/fwb_live/fastweb/jsp/pPathSeamless10_3_4.jsp" + preload + "&custnam
e=" + "<%= myJspUIHelper.getCustname() %>"; if I change this method to another “get” method in the Bean I get a value
// MENU
function selectSubchannel(channel) {
I am opening a jsp website via Delphi code and passing in parameters in the query string of the URL like this:
http://sabre/fwb_live/fastweb/html/PreLoad_11_3.jsp?custname=lctest&login=logintest
This works fine – BUT I really don’t want all those values to be visible because of security concerns, so I am trying to “hide” the custname parameter by using a java bean, so I can reference it later. (I am able to reference that value in the same page.) I am getting the value by using request.getParameter.
Then I redirect to a new html page with the first page's onload event without including the custname parameter in the URL The new page is index.html (which uses frames). One of the frames’ src is nav.jsp. In nav.jsp I am trying to get the value back from the bean so I can put it in an XML document and send it on it’s way, but the custname is always NULL! I cannot send you all the code as there are lots of dependencies, but am sending the most pertinent parts.
If you have any ideas what I am doing wrong, or if you know of a better way to do this, I would be most grateful for advice.
I am using Internet Explorer 5.0 on a Tomcat 3.0 webserver.
Thanks very much,
Judy
--------------------
Excerpts from JspUIHelper:
package com.medcmp.fastweb.view;
import com.medcmp.log.Log;
import com.medcmp.log.Priority;
import com.medcmp.util.ComponentHelper;
import com.medcmp.util.StringHelper;
import java.rmi.RemoteException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
public class JspUIHelper
{
(…skipping some…)
public String getCustname() {
return(custname);
}
public void setcustname(String custname) {
this.custname = custname;
}
---------------------------------------
Entire contents of PreLoad_11_3.jsp:
<%@ page errorPage="../../fastweb/jsp/JspException.jsp" import="java.util.*" %>
<jsp:useBean id="myJspUIHelper" class="com.medcmp.fastweb.view.JspUIHelper" sco
pe="application" />
<jsp:setProperty name="myJspUIHelper" property="custname" param="custname" />
<%
// add variable to this list
String id = "";
// add an if statement to map it in
if ( request.getParameter("LogonIDIn") != null ) {
id = request.getParameter("LogonIDIn").trim();
};
String custname = "";
if ( request.getParameter("custname") != null ) {
};
String login = "";
if ( request.getParameter("login") != null ) {
login = request.getParameter("login").trim();
};
// append it to the URL string
String x = "index.html?LogonIDIn=" + id + "&login=" + login;
%>
<HTML>
<HEAD>
<script language=javascript type="text/javascript">
function fwd() {
location.href = "<%=x%>" ; ---if I comment out this line I can see the property from the getProperty call below so I know the Bean is working
};
</script>
</HEAD>
<BODY onLoad = "fwd()">
<jsp:getProperty name="myJspUIHelper" property="custname" />
</BODY>
</HTML>
-----------------------------------------------------------
Excerpts from nav.jsp:
<html><head>
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1">
<jsp:useBean id="myJspUIHelper" class="com.medcmp.fastweb.view.JspUIHelper" />
<title>Channels</title>
<SCRIPT LANGUAGE=JAVASCRIPT1.2 TYPE="TEXT/JAVASCRIPT">
var preload = "";
var ppathUrl = "";
var cnam = "";
if (top.parent.location.search.length > 0) {
preload= top.location.search.slice(0);
}
cnam = "<%= myJspUIHelper.getCustname() %>";
ppathUrl = "/fwb_live/fastweb/jsp/pPathSeamless10_3_4.jsp" + preload + "&custnam
e=" + "<%= myJspUIHelper.getCustname() %>"; if I change this method to another “get” method in the Bean I get a value
// MENU
function selectSubchannel(channel) {
If you use a form with hidden input fields and use post instead of get for the form method, there will be no data shown in the url
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