Struts2 with Nested Iterator dynamic column and rows - struts2

Question

I want to display grid in Struts2 which include dynamic rows and columns, it also provide that data should be save in database.
so i have created one list for columns and other map for that values in one bean.
I have included code also.
My bean looks like
public class Annexure{
private List<String> columnsList = new ArrayList<String>(1);
private Map<String,List<String>> columnsValues = new HashMap<String,List<String>>(1);
... setter/getter methods
}
Action class
package com.eks.ias.web.annexure.action;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.eks.ias.web.annexure.vo.Annexure;
import com.opensymphony.xwork2.ActionSupport;
public class AnnexureAction extends ActionSupport {
private static final long serialVersionUID = -8819437646232339486L;
private Annexure annexure = new Annexure();
public String execute()throws Exception {
List<String> columnsList = new ArrayList<String>();
columnsList.add("STNNo");
columnsList.add("EAN");
columnsList.add("ArticleCode");
annexure.setColumnsList(columnsList);
annexure.setTotalColumns(3);
annexure.setName("Stock Pending for Inward in SAP");
annexure.setDescription("Details of all merchandise physically received");
annexure.setSiteName("XXX");
Map<String,List<String>> columnsValues = new HashMap<String,List<String>>();
columnsValues.put("0", columnsList);
columnsValues.put("1", columnsList);
annexure.setColumnsValues(columnsValues);
return SUCCESS;
}
public void setAnnexure(Annexure annexure) {
this.annexure = annexure;
}
public Annexure getAnnexure() {
return annexure;
}
}
JSP page
<s:iterator value="annexure.columnsValues" status="rows">
<tr>
<s:iterator value="annexure.columnsList" status="columns">
<td><s:textfield name="annexure.columnsValues[%{#rows.index}][%{#columns.index}]" theme="simple"/></td>
</s:iterator>
</tr>
</s:iterator>
Html code generated looks like
<tr>
<td>
<input type="text" name="annexure.columnsValues[0][0]" value="STNNo"
id="annexure_annexure_columnsValues_0__0_"/>
</td>
<td>
<input type="text" name="annexure.columnsValues[0][1]" value="EAN"
id="annexure_annexure_columnsValues_0__1_"/>
</td>
<td>
<input type="text" name="annexure.columnsValues[0][2]" value="ArticleCode"
id="annexure_annexure_columnsValues_0__2_"/>
</td>
</tr>
when i submit data then i am not able to get those data in action
I am not able to understand the problem if data populate then data should get in action also.

Answer 1

Sorry I don't have enough rep to post a comment, and I'm not sure whether I understand your problem fully. However, there is one thing that I noted with the row index.
shouldn't this
<s:textfield name="annexure.columnsValues[%{#rows.index}][%{#columns.index}]" theme="simple"/>
rather be
<s:textfield name="annexure.columnsValues['%{#rows.index}'][%{#columns.index}]" theme="simple"/>
Note the single quotes. This should set the string key correctly in the map.

Answer 2

Code will be something like this
<s:iterator value="lstBean" id="lstBean" status="outerStat">
<s:textfield value="%{name}" name="lstBean[%{#outerStat.index}].name"/>
<s:textfield value="%{amt}" name="lstBean[%{#outerStat.index}].amt"/>
<s:textfield value="%{id}" name="lstBean[%{#outerStat.index}].id"/>
<s:iterator value="%{lstString}" status="myStat">
<s:textfield name="lstBean[%{#outerStat.index}].lstString[%{#myStat.index}]"/>
</s:iterator>
</s:iterator>
Here's the complete example on Nested Iterator in Struts2