Hi Struts users,
 
I have tried to use ArrayList in the DynaActionForm with Struts 1.1. 
 
Before the action is processed (processActionForm), I got an error:
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
        java.util.ArrayList.RangeCheck(ArrayList.java:507)
        java.util.ArrayList.get(ArrayList.java:324)
        org.apache.struts.action.DynaActionForm.get(DynaActionForm.java:298)
        
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:474)
        
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:428)
        
org.apache.commons.beanutils.PropertyUtils.getNestedProperty(PropertyUtils.java:770)
        org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:801)
        org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:881)
        org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:808)
        org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1252)
        
org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821)
        org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254)
        org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
        org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 
 
struts-config.xml :
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts 
Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd";>
<struts-config>
    
    <!-- ========== Form Bean Definitions ================================== -->
    <form-beans>
      <form-bean name="CalendarForm" type="fr.sipe.test.forms.CalendarForm" />
      <form-bean name="purchaseOrderBeanForm" 
type="org.apache.struts.validator.DynaValidatorForm"><!-- 
org.apache.struts.action.DynaActionForm-->
            <form-property name="lines" type="fr.sipe.test.forms.POLine[]" size="4" />
            <form-property name="arrayLines" type="java.util.ArrayList" size="4" />
            </form-bean>
    </form-beans>
    
    <!-- ========== Global Exception Definitions ============================== -->
    <global-exceptions />
    
    <!-- ========== Global Forward Definitions =============================== -->
    <global-forwards type="org.apache.struts.action.ActionForward">
        <forward name="calendarStyle" path="/css/calendar.css" />
        <forward name="calendarJs" path="/js/calendar.js" />
        <forward name="error" path="/error.jsp" />
    </global-forwards>
    
    <!-- ========== Action Mapping Definitions =============================== -->
    <action-mappings type="org.apache.struts.action.ActionMapping">                
      <action
             input="/calendar.jsp"
         name="CalendarForm"
         path="/ViewCalendar"
         scope="request"
         type="fr.sipe.test.actions.ViewCalendarAction" >
         <forward name="Success" path="/calendar.jsp" />
      </action>
 
        <action
            path="/generateBeanPOForm" 
          input="/purchaseOrderBean.jsp"
            type="fr.sipe.test.actions.GenerateBeanPOForm"
          name="purchaseOrderBeanForm"
          scope="request" >
          <forward name="success" path="/purchaseOrderBean.jsp" redirect="false"/>
        </action>
 
        <action 
            path="/generateBeanPO"
            type="fr.sipe.test.actions.GenerateBeanPO"
          name="purchaseOrderBeanForm" 
          scope="request" 
          input="/purchaseOrderBean.jsp">
          <forward name="success" path="/displayPurchaseOrderBean.jsp" 
redirect="false"/>
        </action>
    </action-mappings>
 
      <message-resources parameter="resources.application" null="false" />
 
    <controller processorClass="org.apache.struts.action.RequestProcessor" 
contentType="text/html"/>
</struts-config>
 
 
 
I'ved download the source code and traced the calls. The method that returns this 
error is located in the class
BeanUtils.setProperty(Object bean, String name, Object value)
At the call:                target = PropertyUtils.getProperty(bean, name.substring(0, 
delim));
 
The bean is created but the size of the ArrayList is 0, so when calling the first 
property at indexed 0, I got an error.
 
Do you have any idea how to solve this problem (without using POJO array like 
myBean[])?
 
Thanks for your help
Jean-Michel
 

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