Configuring OAuth 2 support in Spring Security

Using Spring Social, we can enable OAuth 2-specific provider endpoints for intercepting provider form submissions.

Local UserConnectionRepository

The UsersConnectionRepository interface is a data access interface for managing a global store of users' connections to service providers. It provides data access operations that apply to multiple user records, as shown in the following code snippet:

    //src/main/java/com/packtpub/springsecurity/configuration/SocialConfig.java

    @Autowired
    private UsersConnectionRepository usersConnectionRepository;
    @Autowired
     private ProviderConnectionSignup providerConnectionSignup;
    @Bean
    public ProviderSignInController providerSignInController...