This app shows a working example of how to upload a file using AngularJS to a Go server.
Clone the angularjs-file-upload locally, then open index.html in a browser
git clone https://github.com/natethinks/angularjs-file-upload.git
cd angularjs-file-upload
open app/index.html
To run the server, make sure golang is installed and run go build && ./angularjs-file-upload from the project directory