Radiogroups + jsp + beans + struts

I need to display a page with radiogroups (to be decided at runtime from database) using JSP.
Basically this is an online quiz with questions & every question having 3-4 options as radio buttons.
On submission of the form i need to access the value of the option.
My problem is how can i submit the value in a hashtable (Quesid, RadioValue) for all the radiogroups.
I cant go for individual getters & setters.
Dont know any struts tag for the same.
Kindly guide

Yes this is the solution i use when the collection is displayed alone in a jsp page, but how do you do this when you include this collection in a page, and if you have other collections in other parts of the page ? Is there a clean solution of doing this in the jsp page? For example:
<sometag:loadmycollection name="list"/>
<logic:iterate id="myCollectionElement" name="list">
Element Value: <bean:write name="myCollectionElement" />
</logic:iterate>
I know that i can write my own tag by if there is an existing solution...

Similar Messages

How to assign bean value to a local variable in JSP using struts.

Hi everybody!
I've a problem that puzzled me on how to assign a bean value to a local variable like String in JSP using struts.
we can have someting like this to display the value
<bean:write name="detailService" property="status" />or
<bean:define id="theStatus" name="detailService" property="status"/>
This is country: <%=theStatus%>but an error occured when I tried like this:
String currentStatus = "<bean:define id="theStatus" name="detailService" property="status"/>";
or
String currentStatus = "<bean:write name="detailService" property="status" />";Is there a way to do this?.....
Any help pretty much appreciated

Java != JSP.
The <bean:define> and <bean:write> tags are custom tags meant to appear in the HTML section of a JSP file, as opposed to the scriptlet section. They actually get turned into java code as part of the translation process.
The <bean:write> tag naturally just writes out what you tell it to.
The <bean:define> tag defines a local variable, and gives it a value.
this should do it.
<bean:define id="theStatus" name="detailService" property="status" type="java.lang.String"/>
<%
String currentStatus = theStatus;
%>With the advent of JSTL, you shouldn't really need to use scriptlet code anymore. Personally I am for 0% scriptlet code in any jsp I write.

Prob with running jsp Bean

Hi,
I am trying to run a bean through a jsp but its giving error at useBean tag of jsp:
The error is :
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: /Quadratic.jsp(7,0) The value for the useBean class attribute com.brainysoftware.Quadratic is invalid.
     org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
     org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
     org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:150)
     org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1227)
     org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
     org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
     org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
     org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
     org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
     org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
     org.apache.jasper.compiler.Generator.generate(Generator.java:3272)
     org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:244)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:470)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
My jsp is:
<HTML>
<HEAD>
<TITLE> JSP BEAN Quadratic Example </TITLE>
</HEAD>
<BODY>
<%@ page language="java" %>
<jsp:useBean id="quadratic" scope="session" class="com.brainysoftware.Quadratic" />
<jsp:setProperty name="quadratic" property="ia" param="a" />
<jsp:setProperty name="quadratic" property="ib" param="b" />
<jsp:setProperty name="quadratic" property="ic" param="c" />
X1= <%= quad.getDx1( ) %>
X2= <%= quad.getDx2( ) %>
End of program
</BODY>
</HTML>my bean is:
package com.brainysoftware;
import java.io.*;
class Quadratic{
int ia;
int ib;
int ic;
String dx1;
String dx2;
public int getIa( ) {
return ia;
public void setIa( int ii) {
ia=ii;
public int getIb( ) {
return ib;
public void setIb(int ii) {
ib=ii;
public int getIc( ) {
return ic;
public void setIc(int ii) {
ic=ii;
public String getDx1( ) {
double detA;
double result;
detA= ib*ib -4*ia*ic;
if(detA<0.0)
return "Real Roots not possible";
else {
result= -ib - Math.sqrt(detA/(2 * ia));
Double Dresult=new Double (result);
return Dresult.toString( );
public String getDx2( ) {
double detA;
double result;
detA= ib*ib -4*ia*ic;
if(detA<0.0)
return "Real Roots not possible";
else {
result= -ib + Math.sqrt(detA/(2 * ia));
Double Dresult=new Double (result);
return Dresult.toString( );
my directory structure is given below:
C:\tomcat-5.0.28\jakarta-tomcat-5.0.28\webapps\jsp-examples\WEB-INF\classes\com\
brainysoftware>dir
Volume in drive C has no label.
Volume Serial Number is 4C50-9542
Directory of C:\tomcat-5.0.28\jakarta-tomcat-5.0.28\webapps\jsp-examples\WEB-IN
F\classes\com\brainysoftware
05/22/2005 11:15 PM <DIR> .
05/22/2005 11:15 PM <DIR> ..
05/22/2005 11:18 PM 134 CalculatorBean.java
05/23/2005 12:12 AM 216 Counter.java
05/24/2005 10:48 PM 358 SimpleJavaBean.java
06/14/2005 11:16 PM 1,205 Calculator.java
06/14/2005 11:16 PM 1,323 Calculator.class
06/16/2005 06:44 PM 534 CalculatorBean2.java
06/17/2005 08:53 AM 703 CalculatorBean2.class
06/16/2005 07:00 PM 352 CalculatorBean2.html
06/17/2005 08:51 AM 588 CalculatorBean2.jsp
06/17/2005 04:29 PM 97 UploadBean.java
06/17/2005 04:43 PM 527 FileUploadBean.java
06/17/2005 04:43 PM 834 FileUploadBean.class
06/18/2005 12:21 PM 863 Quadratic.java
06/18/2005 12:21 PM 1,093 Quadratic.class
14 File(s) 8,827 bytes
2 Dir(s) 8,615,821,312 bytes free
C:\tomcat-5.0.28\jakarta-tomcat-5.0.28\webapps\jsp-examples\WEB-INF\classes\com\
brainysoftware>
The above clearly shows the presence of Bean in the reqd directory but still I am getting an error. Can somebody help me:
Zulfi.

class QuadraticThe class is not public. It is only visible to other classes in the same package as itself, so the servlet (JSP) trying to instantiate and reference it can't see it.
Make it public.

[b]Data Grid in jsp using Struts [/b]

I need to develop a data grid in JSP using struts .
I am using Tomcat web server , Intellij IDEA IDE.
If any one has code, please sent it.
Thanks in Advance.

hi,
Use Struts-Layout datagrid framework to full fill your needs
Related Topic link
here is the clear documentation for your topic
http://struts.application-servers.com/datagrid/index.html
here is the download link
(Struts-Layout datagrid framework)
http://deltha.uh.cu/java/docs/struts-layout-1.0-docs/download.html
related discuss
http://forum.java.sun.com/thread.jspa?threadID=5202989&messageID=9811082

Displaying Hashmap values in JSP using struts taglib

Please can any one provide me the solution for the below query,
I have stored hasmap key as string and value as arraylist, can any one suggest how to display the hashmap values(arraylist) in table format in jsp using struts taglib.
                         HashMap hsMap=new HashMap();
                         ArrayList arrList = new ArrayList();
                         arrList.add("filesize");
                         arrList.add("filelength");
                          hsMap.put("filename",arrList);
           In jsp i want to display filename and filesize in table format.

Read this documentation:
http://struts.apache.org/struts-doc-1.2.x/userGuide/struts-logic.html#iterate

Display of dynamic data in Listbox in jsp usin Struts

Hi,
I am trying to display a List in a jsp in Struts.
I have written a Action form and am populating a Arraylist in a DAO(java class file).
ArrayList.add(rs.getString(1),rs.getSTring(2));
But I do not know how to display the arraylist in JSP using the struts tag libraries.
Please let me know how this can be done.
Thanks in advance.
Sri

Use logic:iterate or nested:iterate.
You can refer to:
http://forum.java.sun.com/thread.jspa?threadID=5164152&messageID=9629275#9629275
http://struts.apache.org/1.x/struts-taglib/tlddoc/index.html
SirG

Dynamic Textboxes in JSP using struts

Hi all
I'm using JSP and Struts framework. I have two buttons Add row and delete row.(not submit buttons) on click i need to either generate or delete a row of textboxes. I able to do the same using javascript but the tag in that case is <input..>(normal HTML) and not <html:text> tag of struts.. Can i use the struts tag in jsp?? I tried but err... So any suggestions?
A sample code would be of great help.. Im still a beginner in this ocean of Java!
cya

If the add/delete row buttons run in javascript, then you have to use the standard <input> tags.
The struts <html:text> tag is a JSP tag that just generates an <input> at the end of the day anyway (filling in the attributes automatically though)
As long as you name the controls consistent with what would have been produced by the struts tag, it should work perfectly well.

NEWBIE SUPER EASY JSP / BEAN

With about half a dozen books sitting around my desk, I can't get a REAL basic jsp to work. I FINALLY got tomcat to NOT give run time errors, however the web page simply outputs "This is output:" I know I am an idiot, but this JSP / bean stuff is upsetting. Any help on the following code would be great.
basic.jsp is as follows:
<jsp:useBean id="myBean" class="basic.basicbean" scope="session"/>
<html>
<head>
<title>
A Simple JSP
</title>
</head>
<body>
<%
myBean.setBasicName("Michelle");
%>
This is output: <% myBean.getBasicName();%>
</body>
</html>
basicbean.java is as follows:
package basic;
import java.beans.*;
public class basicbean {
private String BasicName=null;
/** Creates new basicbean */
public basicbean() {}
public String getBasicName() {
return this.BasicName;
public void setBasicName(String value) {
this.BasicName = value;
Made the .java into the class put it in the basic directory under the classes/basic directory of the WEB-INF. The JSP page loads, but only output is: "This is output:" I am using Tomcat as the JSP server. "Core JSP" "Core Servlets and JavaServer Pages" "Advanced JavaServer Pages" "JSP, Servlets, and MySQL", and "Java Server Pages for Dummies" and I still can't get it. Thanks for helping out an idiot.
-Jim

You are very close; just a small error in the line:
This is output: <% myBean.getBasicName();%>
The problem is your just simply calling the method and tossing the return value. You have three ways of outputing the bean property:
This is output: <% out.print(myBean.getBasicName();%>
or
This is output: <%=myBean.getBasicName()%>
or
This is output: <jsp:getProperty name="myBean" property="BasicName" />
If you use the <jsp:getProperty> approach, then you must have a <jsp:useBean> somewhere above the getProperty tag.
- Chris

JDeveloper editing JSP with Struts tags terribly, terribly slow!?

I use JDeveloper 10.1.2 and I do not know the reason but it started to take 15min just to change/edit JSP containing Struts tags. RAM memory is 1GB and there is more than 0.5 GB available, but processor usage shows 100% allocated to JDeveloper!? As soon as I do even slight change in a JSP file JDeveloper starts some computations and I have no idea of what it is doing.
What is JDeveloper computing? It seems it tries to produce some drop-down lists "helping" me to do the editing, add tags and instead I am spending days to just change one small JSP page!
How can I stop and PREVENT JDeveloper doing ANY "help" during editing of ANY file?
There must be an option to switch off whatever JDeveloper is doing?
Many thanks,

I did that but it is still very slow, it looks like Jdev is doing some intensive calculations whenever I click somewhere on JSP page with tags. Maybe this is related with my other question I posted before this one? Maybe JDev automatically searches for tag libraries it cannot find and copies them to /WEB-INF directory? (other IDEs used in same environment, like Eclipse and IntelliJ, and they do not have this problem)
Some other strange things: struts-config.xml seems not integrated with CVS from JDev (other files like tiles-config.xml, web.xml etc. are integrated, I can right click and get CVS info on particular file, except struts-config.xml). When I want to check in/out struts-config.xml I have to do it with external tool like WinCVS etc., cannot do that from JDev!

Conversion of Vedio file to FLV using Java/JSP/Servlets/Struts

Hi all,
This is N.Sridhar and I am working on file transcoding.Does any one have any idea about video conversion tools/API which can be used to programitically with JSP/Servlets/Struts or Java to convert any video file to FLV so that it can be viewed in the Web Browser.Kindly let me know if any one of u have worked on it.You can also get me at [email protected]
Thank you all
Sridhar.N

Hi all,
This is N.Sridhar and I am working on file transcoding.Does any one have any idea about video conversion tools/API which can be used to programitically with JSP/Servlets/Struts or Java to convert any video file to FLV so that it can be viewed in the Web Browser.Kindly let me know if any one of u have worked on it.You can also get me at [email protected].
Thank you all
Sridhar.N

Need help in jsp and struts projects

hi
i am using jsp and struts framework.
in that i am putting values in session in one jsp and getting
values in other jsp.i am having doud with how many values i will put in sessions and it will give any difficulty while running in servers.and i want to know any other equivalent way is there for sessions.

hi
i am using jsp and struts framework.
in that i am putting values in session in one jsp
jsp and getting
values in other jsp.i am having doud with how many
ny values i will put in sessions and it will give any
difficulty while running in servers.and i want to
know any other equivalent way is there for sessions.do u want all those vales at the same time? if not then u might use session.removeAttribute() method for trashing out the not needed objects.
there are many ways of session handling.... passing as request param, also using hidden fields, else th URL rewritting...
but all these are not efficient to be passed along if too many pages are using the same session objects. i believe u can also try passing it into an XML file and parse it out whenever needed. but i dont think thats feasible enough.
hope it helps.

Redundant information in JSP bean action

Class Person:
public class Person{
private String name;
public void setName(String p){
name=p;
public String getName(){
return name;
}Code in servlet:
public void doPost(HTTPServletRequest request, HTTPServletResponse response) throws IOException,ServletException{
foo.Person p= new foo.Person();
p.setName("New Guy");
request.setAttribute("person",p);
RequestDispatcher view = request.getRequestDispatcher("result.jsp");
view.forward(request,response);
}Code in JSP:
<jsp:useBean id="person" class="foo.Person" scope="request">This jsp:useBean tag really is confusing. Why does it need to declare the class="foo.Person"? Why does the JSP need to know that "person" instance is derived from class foo.Person ? (I wonder if I changed this to foo.person --> not Person will result in error). Doesn't the statement request.setAttribute("person",p) from the servlet give enough info already to the JSP? thanks

The "person" in your servlet has nothing to do with your "person" in your JSP bean tag.

Create jsp/bean webapp deploy fine... add JSTL library wont deploy!

winxp
SJSE8
PROBLEM:
Using the new project wizard, I create a simple jsp/bean webapp using the embedded tomcat 5.5.7 as server... It deploys and runs with now issue
Then, I right-click on project name (in project tree)... click properties... add library... select "JSTL 1.1".... do clean/build.... do deploy - which fails!
message is: "Failed to deploy application at context path /bcd" (where bcd is my project name)
Why does this happen?
--------------simple app---------------
***jsp1.jsp****
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
    <h1>JSP Page</h1>
    <h1>get stuff JSP Page</h1>
    <jsp:useBean id="a" class="bcdpkg.IndexBean" scope="request"/>
    <h3>after1...</h3>
    
    <jsp:getProperty name="a" property="stuff" />
    </body>
</html>***IndexBean.java***
package bcdpkg;
public class IndexBean
    /** Creates a new instance of IndexBean */
    public IndexBean()
    private String stuff = "this is stuff";
    public String getStuff()
        return this.stuff;
    public void setStuff(String s)
        this.stuff = s;
}

well.... I restarted SJSE8 (and tomcat 5.5.7) and now I can right-click on the project and click deploy...successfully.
(Apologies for the "hair trigger" posting)
I'll reply once more if it happens again.
thanx

Redirect from jsp bean to jsp or html page

I am facing a problem in redirecting to a jsp page from jsp bean
How do i redirect from jsp bean to any other page like jsp or html.
[email protected]

Hi
The solution you suggested we tried it long before only but it is not feasible for us as we have to implement it in all web pages which are in thousands.
My need is like this.
We have given specific time to each of our registered user , as user logs to our portal we calculate session time in bean and as he logs out is new time gets updated. (its like dial up connection)
Now what happens consider user has left only 10 minutes balance, I can calculate and keep track for his time in bean.Now as the time becomes zero I want to redirect him to home page.
As u said i can get return value zero for bean and can do it ,but our webpages are near about thousands.

Javascript array / jsp Bean Collection

How can you fill a javascript array with the values of the collection?
<jsp:useBean id="programs" scope="request" class="java.util.Collection"/>
How can I create this array?
<script language="JavaScript" type="text/javascript">
var programData =
new Array ( new Array "${programs[1].programId}","${programs[1].programName}", "${programs[1].department}"),
             new Array "${programs[2].programId}","${programs[2].programName}", "${programs[2].department}"),
</script>

I answered myself. If anyone else would like to know how to fill a javascript array with the values of a jsp beans collection.
function collectionToArray()
Array[rows] = [4];
var cnt = 0;
<c:forEach var="sp" items="${programs}">
rows[cnt][0] = ${sp.programId};
rows[cnt][1] = ${sp.programName};
rows[cnt][2] = ${sp.department};
rows[cnt][3] = ${sp.urlLink1};
rows[cnt][4] = ${sp.urlLink2};
cnt++;
</c:forEach>
}

Radiogroups + jsp + beans + struts

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