how can i pass value from javascript to a java class in struts2? This is the link similar to what I want.However it does not work for me. I have tried something like this. Struts tag for hidden in jsp is
function redirect(id)
{
window.alert("Hello"+id);
document.getElementById('param_ID').value=id;
document.forms["./ListAlgorithmAction"].submit();
}
In my action class I have declared getter and setter for the param_ID.But it returns null.
Kindly help. Thank you.
You should use like this
<s:hidden id = "param_ID" name="xyz" />
Now you should have a getter and setter for xyz property in your struts action.
You should always have name attribute in tags mapped to attributes in Struts action.
Hope this works.
If the page is not submitting your hidden field, maybe the hidden field is not inside your form element. You can try pass it as a parameter to your url. Try this
function redirect(id)
{
var form = document.forms[0];
var url = './ListAlgorithmAction?param_ID=' + id;
form.action = url;
form.submit();
}
Let me know if this works.
If you want to call an action and return data you should use struts2-json plugin JQuery script for calling action
var abc = $("#abc").val();
$.getJSON('youraction.action', {
variable -name action class : abc,
value to be passed:value,
//and so on
}, function(data) {
//your processing code
}
});
return false;
});
If you want to just call action you may want to use $.ajax in place of $.getJson
If you want to use struts 2-json then you would also need to change your struts.xml i.e
<result name="success" type="json"></result>
It's worth a go
I had a similar issue and resolved it by appending the Action class from JavaScript function and appending the URL parameters as shown below:
<a href="(<%actionClassName%>.action?<%URLParms%>" />
param_id? it should be hidden field to save value and make sure to define a property in your action class with nameparam_ID