@Autowired object gets a null value in one class, while successfully wired in another

Question

I am working on a project using Spring 3, and Spring Security. My problem is with IoC container. Problem started when I wrote my own implementation of UserDetailsService

Answer 1

I had the same problem. Although this can happen in many ways, in my case I was creating a new object, instead of using the autowired one. i.e.:

private Service service = new ServiceImpl();

instead of:

@Autowired private Service service;

This was not in the Service using the Repository injection, but in a controller on top of that.