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Editorial Team
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Asked: 2026-05-21T10:29:57+00:00

I’m trying to create a webb application using Struts 2 and javascript and I’m

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I’m trying to create a webb application using Struts 2 and javascript and I’m having some trouble passing data from my action into my javascript.
This is the list I’m trying to send/access: 

List<MarkerClass> markers;

MarkerClass is defined acoprding to belove:

final class MarkerClass  
{  
    public Integer objectId;  
    public String street;  
    public String streetNumber;  
    public String zip;  
    public String city;  
    public Integer statusId;  
    public Float lattitude;  
    public Float longitude;  
}

The action also includes a getter for markers:

public List<MarkerClass> getMarkers()
{
    return markers;
}

In my jsp-file I have tried doing this:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html>
<html>
<head>

<script type="text/javascript">

function initialize() 
{
    var titel = "";
    for(var i, "${markers}")
    {
        titel = titel+ "${markers[i].street}";
    }
}

The browser substitutes “${markers}” with “[se.fubar.test.MarkerClass@37a4, se.fubar.test.MarkerClass@9ad97c]”
I’m guessing there is a better and smarter way to do this but since I’m a bit new to Struts and is trying to code while under the influence of a migrane the answer elludes me.

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1 Answer

  1. Editorial Team

    You cannot just use a struts variable in a javascript function and expect it to work. Remember that the ${...} stuff gets processed before the HTML for the page is sent to the browser. By the time the javascript is rendered at the browser, you are only left with the textual representations. What you will need to do is something like (check the syntax, I haven’t used this stuff i a while):

    function initialize() {
    var title = "";
    <c:foreach var="marker" list="${markers}">
         title = title + "${marker.street}";
    </c:foreach>
}

    Something along those lines anyway… Basically the Javascript seen by your browser will look like

    function initialize() {
    var title = "";
    title = title + "Street1";
    title = title + "Street2";
    title = title + "Street3";
    title = title + "Street4";
}

    I hope that makes sense and is related to what you were asking.
    By the way, there are usually better ways of accomplishing this functionality that building dynamic js etc. Probably there are built in Struts 2 components that you can use?

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