I am having trouble implementing the nested tags. I have downloaded and completed the
Keyboard Monkey tutorial and everything ran smoothly, but when I try and implement the
tags in my program I am having problems. The following code using the logic tags
works correctly and displays the desired information. The code using the nested tags
results in the Null Pointer Exception that follows. The property names are different,
but refer to the same variable, one returns the information as an ArrayList and the
other as and Object[] as shown below. If anyone has some ideas I would really
appreciate them!!
Thanks,
Lynda
public ArrayList getBundleDetail() {return bundleDetail ;}
public Object[] getBundleDetailList() {return bundleDetail.toArray() ;}
<logic:iterate id="detail" name="OrderSalesForm" property="bundleDetail">
<tr>
<td><bean:write name="detail" property="bundleProdCode"/> </td>
<td><bean:write name="detail" property="bundleDtlRateA"/> </td>
<td><bean:write name="detail" property="bundleDtlRateB"/> </td>
<td><bean:write name="detail" property="bundleDtlQuantity"/> </td>
</tr>
</logic:iterate>
<nested:iterate property="bundleDetailList">
<tr>
<td><nested:write property="bundleProdCode" /> </td>
<td><nested:write property="bundleDtlRateA" /> </td>
<td><nested:write property="bundleDtlRateB" /> </td>
<td><nested:write property="bundleDtlQuantity" /> </td>
</tr>
</nested:iterate>
java.lang.NullPointerException: Null attribute name at
org.apache.jasper.runtime.PageContextImpl.findAttribute(PageContextImpl.java:417) at
org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:813) at
org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:873) at
org.apache.struts.taglib.logic.IterateTag.doStartTag(IterateTag.java:277) at
org.apache.struts.taglib.nested.logic.NestedIterateTag.doStartTag(Unknown Source) at
org.apache.jsp.OrderSales2022L_jsp._jspx_meth_nested_iterate_0(OrderSales2022L_jsp.java:670)
at
org.apache.jsp.OrderSales2022L_jsp._jspx_meth_html_form_0(OrderSales2022L_jsp.java:337)
at
org.apache.jsp.OrderSales2022L_jsp._jspx_meth_html_html_0(OrderSales2022L_jsp.java:123)
at org.apache.jsp.OrderSales2022L_jsp._jspService(OrderSales2022L_jsp.java:91) at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:136)
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