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logic:iterate not working

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posted 21 years ago

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Hi all,

for some weird reason the following piece of code doesn't work

<logic:iterate id="level2" name="navigation" property="navVO.secondLevel">
<bean:write name="level2" property="title"/>
</logic:iterate>

When i run this, the JSP throws an error saying
"The bean level2 cannot be found in any scope"

all the value objects are defined, and are available, b'coz when i print the collection secondLevel in the JSP all the 20 objects are displayed.

there are 20 objects in that collection.

when i replace the bean:write tag with any normal text then the loop gets executed only once.

any ideas?

Seshu

Sree Jag<br />SCJP 1.4

Marc Peabody

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posted 21 years ago

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when i print the collection secondLevel in the JSP all the 20 objects are displayed.

Could you show this code from your jsp that works???

It will be a good context for writing up how logic:iterate will work for your situation.

A good workman is known by his tools.

Sree Jag

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Posts: 77

posted 21 years ago

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here's the code that worked. basically i checked whether the collection secondLevel is having any collection items or not.

here's the code:

<bean:write name="navigation" property="navVO.secondLevel"/>

this printed all the 20 objects present in the collection secondLevel

-Seshu

Sree Jag<br />SCJP 1.4

Grady Jamyson

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posted 21 years ago

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I have the same problem just like yours.

My code is :

<%@ page import="factory.material.*, java.util.*" %>
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/c.tld" prefix="c" %>
<%
List matList = MaterialService.getInstance().getMaterialList();
request.setAttribute("material",matList);
%>
<html:html locale="true">
 
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title><bean:message key="system.title"/></title>
</head>
 
<body>
 
<div align="center">
  <center>
  <table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="80%" id="AutoNumber1">
    <tr>
      <td width="20%" height="24" align="center"><font size="2"><bean:message key="material.number"/></font></td>
      <td width="40%" height="24" align="center"><font size="2"><bean:message key="material.name"/></font></td>
      <td width="20%" height="24" align="center"><font size="2"><bean:message key="material.type"/></font></td>
      <td width="20%" height="24" align="center"></td>
    </tr>
<logic:iterate id="element" name="material" scope="request" type="factory.material.MaterialDTO" >
    <tr>
      <td width="20%" height="24" align="center"><bean:write name="element" property="matName" /></td>
      <td width="40%" height="24" align="center"></td>
      <td width="20%" height="24" align="center"></td>
      <td width="20%" height="24" align="center"></td>
    </tr>
</logic:iterate>
  </table>
  </center>
</div>
 
</body>
 
</html:html>

the error message is :
Cannot find bean element in any scope

any ideas?
thanks.

[ May 27, 2004: Message edited by: Grady Jamyson ]
[ May 27, 2004: Message edited by: Grady Jamyson ]

Sree Jag

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Posts: 77

posted 21 years ago

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Hi Grady,

I could not get any ideas on how to solve this problem. The problem could be because we are using a bean defined using request.setAttribute() instead of using the form bean.

I solved the problem by using JSP scriptlet code in the JSP.

But that is not a good solution. If u have any ideas please lemme know. you can contact me at [email protected]

-Seshu

Sree Jag<br />SCJP 1.4

Grady Jamyson

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Posts: 42

posted 21 years ago

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I found my problem of the codes.
I didn't put the taglib code into the code.

the following codes work fine

<%@ page import="factory.material.*, java.util.*" %>
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%
Collection matList = MaterialService.getInstance().getMaterialList();
request.setAttribute("material",matList);
%>
<html:html locale="true">
 
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title><bean:message key="system.title"/></title>
</head>
 
<body>
 
<div align="center">
  <center>
  <table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="80%" id="AutoNumber1">
    <tr>
      <td width="20%" height="24" align="center"><font size="2"><bean:message key="material.number"/></font></td>
      <td width="40%" height="24" align="center"><font size="2"><bean:message key="material.name"/></font></td>
      <td width="20%" height="24" align="center"><font size="2"><bean:message key="material.type"/></font></td>
      <td width="20%" height="24" align="center"></td>
    </tr>
<logic:iterate id="element" name="material" type="factory.material.MaterialDTO" >
    <tr>
      <td width="20%" height="24" align="center"><bean:write name="element" property="matName" /></td>
      <td width="40%" height="24" align="center"></td>
      <td width="20%" height="24" align="center"></td>
      <td width="20%" height="24" align="center"></td>
    </tr>
</logic:iterate>
  </table>
  </center>
</div>
 
</body>
 
</html:html>

Sree Jag

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Posts: 77

posted 21 years ago

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Thanks grady, including the struts-logic.tld taglib did the trick

-Seshu

Sree Jag<br />SCJP 1.4

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