You can use Ajax. I have implemented it for Struts 2. See my code below:
<script language="javascript" type="text/javascript">
function getXMLHTTP() {
var xmlhttp=false;
try{
xmlhttp=new XMLHttpRequest();
}
catch(e) {
try{
xmlhttp= new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e){
try{
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch(e1){
xmlhttp=false;
}
}
}
return xmlhttp;
}
function loadRegions(childRegion, parentRegion)
{
var regionId=parentRegion.value;
var strURL="user/noDeco_loadRegions.action?regionId="+regionId;
var req = getXMLHTTP();
if (req) {
req.onreadystatechange = function() {
if (req.readyState == 4) {
// only if "OK"
if (req.status == 200) {
var resultList
=req.responseText;
//alert(resultList);
resultList =
resultList.split(',');
var intCounter = 0;
var option = new
Option('Select','');
document.userForm.elements[childRegion].options[intCounter] = option;
intCounter++;
for(i=0; i<resultList.length;
i=i+2)
{
var option =
new Option(resultList[i+1],resultList[i]);
document.userForm.elements[childRegion].options[intCounter] =
option;
intCounter++;
}
//alert("ThereXMLHTTP:\n" +
req.responseText);
} else {
alert("There was a problem
while using XMLHTTP:\n" + req.statusText);
}
}
}
req.open("GET", strURL, true);
req.send(null);
}
}
function loadProvinces(parentRegion)
{
document.userForm.provinceId.options.length = 0;
var option = new Option('Select','');
document.userForm.provinceId.options[0] = option;
//alert("value is " +parentRegion.value);
if (parentRegion.value != '')
{
//alert("value not null " +parentRegion.value);
loadRegions('provinceId',parentRegion);
}
}
</script>
<s:select name="countryId" key="user.label.country" required="true"
headerKey="" headerValue="Select"
onchange="loadProvinces(this)"
list="countryList"
listKey="regionId" listValue="description" >
<s:param name="labelcolspan" value="%{1}" />
<s:param name="inputcolspan" value="%{1}" />
</s:select>
<s:select name="provinceId" key="user.label.province"
required="true"
headerKey="" headerValue="Select"
list="provinceList"
listKey="regionId" listValue="description" >
<s:param name="labelcolspan" value="%{1}" />
<s:param name="inputcolspan" value="%{1}" />
</s:select>
You have to map the action in struts.xml file.
And code in my action class is:
@SkipValidation
public void loadRegions()
{
try
{
String regions ="";
regionList =
commonService.loadRegionListByParentRegion(regionId);
StringBuffer regionStr = new StringBuffer();
if(regionList != null && regionList.size()>0)
{
Iterator iter = regionList.iterator();
while(iter.hasNext())
{
Map optionMap = (Map)iter.next();
regionStr.append((String)optionMap.get(TxnServerI.REGION_ID)).append(",")
.append((String)optionMap.get(TxnServerI.REGION_DESCRIPTION)).append(",");
}
regions = regionStr.toString().substring(0,
(regionStr.length()-1));
}
_response.setContentType("text/xml");
PrintWriter writer = _response.getWriter();
writer.write(regions);
}
catch (Exception e)
{
e.printStackTrace();
}
}
Rajiv
Nisha Akash wrote:
>
> Hello everyone,
>
> There is a problem in my struts 1.x code is that
>
> Suppose I have 2 combobox say country,city & initially country contains
> some countyname from database .Now i want that when we select any item
> or any country from country combobox then other city combobox contains
> data from database according to each country
>
--
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