Struts 2 display tags - struts2

Question

I have a JSP which has below tags the data in resultsList fed in some action and forwarded to below jsp here I would like to get the data back into the other action based on the checkbox selection. Please help, can do using Struts1 but don't like to turn back to Struts1 since started using Struts2.
<display:table class="displaytag" id="row" style="font-size:1.4em;" name="resultsList" requestURI="/SomePath.action">
<display:column property="businessType" title="Business Type"></display:column>
<display:column property="structure" title="Structure"></display:column>
<display:column property="tradeSubType" title="Trade Sub Type"></display:column>
<display:column property="businessGroup" title="Business Group"></display:column>
<display:column title="Select To Copy" align="center">
<s:checkbox name="selectToCopy" fieldValue="false" value="false" label="Check Me To Download"></s:checkbox>
</display:column>
</display:table>
The data will be fetched in one action and forwarded to the jsp where jsp contains above display tag and now I need to submit the form and action should receive the checked information to process further. Any help here is really appreciated, I can do it using Struts1 no doubt but would like to continue in Struts2.

Answer 1

I'm guessing your action class sends some domain objects from this type:
public class MyData {
private Integer id;
private String businessType;
//other params
//getter/setters
}
And your action class, that ist invoked before accessing the displaytag jsp page has a list of objects form type MyData:
public class MyDisplayTagAction extends ActionSupport {
private List<MyData> myDataList;
//other params
//getter/setter
public String execute() {
myDataList = getMyDataListFromSomewhere();
return SUCCESS;
}
}
The JSP should contain a form and a submit button. Moreover you have to define every data you want to send back as a field in that form. If the user is not allowed to change them, use hidden fields. The #attr.row.id access printing that id to the value. #attr is from ognl to access the variable row defined from displaytag. (For more info: Struts OGNL)
<s:form action="myStrutsPostAction" method="post">
<display:table name="myDataList" uid="row">
<display:column>
<s:checkbox name="resultsList[%{#attr.row_rowNum - 1}].selectToCopy" id="check%{#attr.row_rowNum - 1}" value="%{#attr.row.selectToCopy}"/>
</display:column>
<display:column>
<input type="hidden" name="resultsList[<s:property value='%{#attr.row_rowNum - 1}'/>]" value="<s:property value='%{#attr.row.businessType}' />"/>
<s:property value="%{#attr.row.businessType}"/>
</display:column
</display:table>
<s:submit>
</s:form>
The post action class (the one that takes the form request) should contain a list, that was defined in the <s:form> and struts will set only the the data into this list.
public class MyPostAction extends ActionSupport {
private List<MyData> resultsList = new ArrayList<>();
//getter/setter
}