Authentication and authorization in REST Services with Liferay

Question

We are building some services that will be exposed through a RESTful API. Primary customers of this API are Liferay portlets using Angular JS, meaning there are direct calls

Answer 1

Take a look at Single Sign On and Spring Security OAuth2 token authentication.

Here is example: sso-with-oauth2-angular-js-and-spring-security.

Note that Spring 4.2 might have some handy CORS support.