struts: accessing list-backed properties in JSP

**poxy** · 05-02-2005 10:29 AM

hi. im trying to make a dynamic form(request time) using list-backed property, following the struts user guide

http://struts.apache.org/userGuide/b...n_form_classes

public FooForm extends ActionForm {

private final List values = new ArrayList();

public void setValue(int key, Object value) {
values.set(key, value);
}

public Object getValue(int key) {
return values.get(key);
}
}

however, im not sure of what they mean by:

"In your presentation pages, you access individual entries in a list-backed property by using a different special notation: listname[index]. The braces in the bean property name indicate that the bean property named listname is indexed (probably backed by a List), and that Struts should look for get/set methods that take an index parameter in order to find the correct sub-property value."

how can i access the property? heres my jsp:

<%@ taglib uri="/tags/struts-html" prefix="html" %>
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<%@page isELIgnored = "false" %>

<html>
<body>
<html:form action="/indextest">

<c:forEach begin="0" end="2" var="cnt">
<html:text property="listname[${cnt}]"/>
<br/>
</c:forEach>

<html:submit>Submit</html:submit>
</html:form>
</body>
</html>

any help appreciated...

**Khalid Ali** · 05-03-2005 11:00 AM

what you should do is create a bean/class with 2 properties in it e.g

Code:

public class User{
 private String name;
 private String id;

 public String getName(){
   return this.name;
 }

 public void setName(String name){
   this.name = name;
 }

public String getId(){
   return this.Id;
 }

 public void setId(String id){
   this.id = id;
 }

}

once you have that thne you create this class and set its properties once you have that then you put these in a list and then when you acess it in the struts page you access it by the name of properties such as name and id

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