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Struts

Problem using html:radio

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posted 15 years ago

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Hi all,
I have tried a lot and could not get a solution for my application. Actually i have a Jsp page which have two radio buttons that needs to get generated dynamically. I tried out with some options, but could not use them properly.
As am confused about using the html:radio tag so please bear with me.
here is my jsp-: check.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html:html>
	<head>
		<meta http-equiv="Content-Type"
			content="text/html; charset=ISO-8859-1">
		<title>Insert title here</title>
	</head>
	<body>  
	<html:form action="checkAction.do" method="POST">
		<logic:iterate id="item" property="items" name="checkbean">
			<html:multibox property="selectedItems">
				<bean:write name="item" />
			</html:multibox>
			<bean:write name="item" />
		</logic:iterate>
		<div id="durationDiv">
				<logic:iterate id="choice" name="CHOICES">
					<html:radio property="control" idName="choice" value="value" />
					<bean:write name="choice" property="label" />
					<br>
				</logic:iterate>

</div>
		</html:form>
	</body>
</html:html>

here is the form bean-: CheckBean.java

and here is my action - CheckAction.java

package com.pranav.action;

import java.util.ArrayList;
import java.util.Collection;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.util.LabelValueBean;

import com.pranav.bean.CheckBean;

public class CheckAction extends Action {
	
	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse httpservletresponse)
			throws Exception {
		CheckBean cb = (CheckBean) form;
		Collection choices = new ArrayList();

choices.add(new LabelValueBean("American Express", "AE"));
		choices.add(new LabelValueBean("MasterCard", "MC"));
		choices.add(new LabelValueBean("Diners", "DN"));

request.setAttribute("CHOICES", choices);
		
		
		System.out.println(cb.getSelectedItems());
		return mapping.findForward("success");
	}

}

the strut-config.xml

Now when am running my application am getting the error-:
javax.servlet.jsp.JspException: Cannot find bean: "CHOICES" in any scope

I have set CHOICES in request attribute still am getting error.

Later i tried to change the check.jsp as-:
<logic:iterate id="choice" name="checkbean" collection="CHOICES">
so name will be my bean name and collection would be the collection from action class. But i get another error as-:
javax.servlet.jsp.JspException: Cannot create iterator for this collection

Could anyone tell me how exactly i should use the tags and where am going wrong. I tried to google much but couldn't find a solution.

Thanks

Pranav Bhatt

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Posts: 284

posted 15 years ago

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Anyone on this? Am i going in right direction?

Pranav Bhatt

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Posts: 284

posted 15 years ago

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Have solved it myself..

... The tut misguided me by writing put collection in action and i was wondering how to pass the attribute to jsp.

Shailesh Narkhede

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posted 15 years ago

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Can you tell flow of Action and jsp calling?

I understands,

(here itself we should put CHOICES in session)>>check.jsp >> CheckAction>>checkSuccess.jsp

Thanks,
Shailesh

Pranav Bhatt

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posted 15 years ago

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Well yes actullay previously i was creating my collection inside the Action class so was having problem.
The flow as per my understanding is as-:
check.jsp->checkbean.jsp (for values in reset methods)->check.jsp(to fill form)->checkbean(for setters to set form fields)-> CheckAction (when finally i submit the form). in between the mapping relationships goes on backend as per struts-config.xml.

Actually when the control was coming to name="CHOICES" it was not able to find the collection in scope as it would check in my form bean and no collection is there in any scope with name "CHOICES".

So after keeping the collection in reset of my formbean am setting it in request scope. So now my jsp is able to find the collection to use as below-:

I had made some rough explanation hope it makes sense

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