我们如何将列表对象从jsp传递到struts2动作？

Question

I'm facing one issue in Struts2, Please find below information.

Java Code:

public class Employ{
  int empNo;
  String empName;
}

class EmployAction{
  List<Employ> empList=new ArrayList<Employ>();
  int eno;
  String ename;
}

<s:iterator value="empList">
<s:textfield name="eno" value="%{empNo}"/>
<s:textfield name="eName" value="%{empName}"/>
</s:iterator>

First I'm doing search operation and getting all employs list and iterating in JSP.

Whenever I'm submitting form this empList object is not passing to Action class. I want this List Object for some other processing.

How can i pass this list object to Action class? Note: Here I'm not using any of List Object fields as Named parameters in fields.

Answer 1

After long investigation found solution and fixed this issue. This solution might be helpful to anyone else.

<s:iterator value="empList" status="emp">
    <s:textfield name="eno" value="%{empNo}"/>
    <s:textfield name="eName" value="%{empName}"/>
    <s:hidden name="empList[%{#emp.index}].eno" value=%{empNo}/>
    <s:hidden name="empList[%{#emp.index}].ename" value=%{empName}/>
</s:iterator>

Answer 2

The solution that Ravi gave is correct, but it can be improved no need for hidden value you can give the name of the field like what you gave in hidden

<s:iterator value="empList" status="emp">
    <s:textfield name="empList[%{#emp.index}].eno" value="%{empNo}"/>
    <s:textfield name="empList[%{#emp.index}].ename" value="%{empName}"/>
</s:iterator>

Answer 3

empList object will be not passed. Struts2 will pass your selected form values to your action class.

If you want to use that empList object to action class,just put that empList object to Session .You can retrive value of emplist object from session in your action class and can process it.