如何使用AngularJS控制器从Google App Engine获取数据，而不仅仅是从json文件获取数据

I am new to web dev and am trying to get data that has been inserted into a Google App Engine datastore and selectively post it onto a page using AngularJS. I am able to get Angular to work with a JSON file and can post the content of my app engine database using inline javascript on an html file, but I would like to do so using AngularJS. I tried to follow the tips listed on I am new to web dev and am trying to get data t