integrate a custom authentication provider in Spring Security for implementing a custom authentication mechanism?
- Extend the AbstractAuthenticationProcessingFilter class and override the attemptAuthentication method to handle custom authentication logic.
- Modify the application.properties file to define custom authentication providers.
- Add a custom AuthenticationProvider bean in the Spring application context and configure it in the security configuration.
- Use the @CustomAuth annotation to specify custom authentication for specific controller methods.
To integrate a custom authentication provider in Spring Security, you should add a custom AuthenticationProvider bean to the Spring application context and configure it in the security configuration. This allows Spring Security to use your custom logic for authentication. Options 1 and 4 are not correct; they do not represent the standard way of integrating custom authentication providers. Option 2 is also incorrect as authentication providers are typically configured programmatically, not in properties files.
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