Скачать или смотреть Allowing HttpServletRequest to Handle Login with Spring Boot Security

Discover how to configure Spring Boot Security to allow the original `HttpServletRequest` to handle authentication effectively.
---
This video is based on the question https://stackoverflow.com/q/63468424/ asked by the user 'Depzor' ( https://stackoverflow.com/u/6669348/ ) and on the answer https://stackoverflow.com/a/63471395/ provided by the user 'Depzor' ( https://stackoverflow.com/u/6669348/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to allow original HttpServletRequest to handle login using Spring Boot Security

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Allow Original HttpServletRequest to Handle Login Using Spring Boot Security

In today's web application landscape, security is paramount. When using Spring Boot, developers often rely on Spring Security to manage authentication and authorization. However, the default behavior of Spring Security can complicate scenarios where you want to leverage the original HttpServletRequest for handling login requests.

In this guide, we'll explore how to configure Spring Boot Security to allow the original HttpServletRequest to manage the login process. This is particularly useful when you want to use the Java EE container for authentication while relying on Spring Security for authorization.

The Problem: Understanding the Default Behavior

Spring Security can wrap your HttpServletRequest with a special wrapper (SecurityContextHolderAwareRequestWrapper), which changes the way certain methods (like login) behave. When you try to invoke the login method on the wrapped request, it can lead to issues if there are pre-authentication filters present, such as AnonymousAuthenticationProvider or PreAuthenticatedAuthenticationProvider.

Example Scenario

Consider the following setup for logging in:

[[See Video to Reveal this Text or Code Snippet]]

In this example, you might expect to trigger the login process directly, but if the AuthenticationManager is not null, the method will go through the Spring Security authentication flow instead of the original servlet request.

The Solution: Using the Container Servlet Request

To resolve this issue, we need to access the original servlet request offered by the container. Here’s how you can modify your login endpoint to use the container’s request directly:

[[See Video to Reveal this Text or Code Snippet]]

Explanation

Container-Specific Request: By changing the request parameter type to SRTServletRequest (or the relevant type for your application’s server), you bypass the Spring Security wrapper, allowing you to call the login method directly from the original request.

Login Handling: This allows the server to handle the authentication without interference from Spring Security’s authentication filters, making it possible to authenticate users as intended.

Conclusion

In conclusion, if you're using Spring Boot Security and need to handle login through the original HttpServletRequest, the solution is straightforward: switch to the container-specific request type. This way, you can ensure that the authentication process respects your desired flow while keeping Spring Security for its powerful authorization capabilities.

By understanding these mechanics, you can leverage Spring Boot Security effectively without running into conflicts with Java EE's built-in authentication mechanisms.

Feel free to reach out if you have any questions or would like to explore further topics in Spring Boot Security!