Using variables from Struts2 with ReactJS - ajax

Question

So here`s the deal. At my workplace, we are trying to introduce ReactJS components in our web app (JSP/Struts2 etc).
So far I've built a component that is supposed to display a tree based on an object, here's a sample:
export default {
name: 'Global',
nodeid: 99,
toggled: true,
children: [
{
name: 'Mid Node',
nodeid: 0,
chosen: false,
pushed: false,
toggled: false,
children: [
{ name: 'Lower Node',
nodeid: 1,
chosen: false,
pushed: false,
toggled: false,
children: [{
name : "Low Child 1",
pushed: false,
toggled: false,
chosen:false
}]
}
]
}
]
};
What I want to do is receive this from a struts action response, rather than having it hard coded to a file which is what I did in my example.
import React from 'react';
import TreeComponent from 'proj-1/TreeComponent';
import HierarchyJson from './internal/Data';
export default function ExampleTreeComponent() {
return <TreeComponent hierarchyJson={HierarchyJson} functionMode={2} htmlId="tree1"/>
}
I've seen a ton of posts where spring is used, but I don't know what are my options in this case. I don't want to have to write an AJAX call to get the data after my JSP page has already rendered.