Spring boot- inject service into doFiler

Question

I am trying to inject a auth service to a Filter -

@Autowired
AuthRequestService authService;

And use it in doFiler

Answer 1

You could use constructor injection. Supposed your filter registration bean lives in a component and has access to the service you could autowire it there and pass it with the constructor

@Autowired  
AuthRequestService authRequestService;

[...]

FilterRegistrationBean filterRegBean = new FilterRegistrationBean<>();
filterRegBean.setFilter(new SAPServiceFilter(authRequestService));