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Caution Review failedThe pull request is closed. WalkthroughThe Changes
Sequence Diagram(s)sequenceDiagram
participant Client
participant Server
participant OAuth2LoginFailureHandler
participant ObjectMapper
Client->>Server: OAuth2 login attempt (failure)
Server->>OAuth2LoginFailureHandler: onAuthenticationFailure(request, response, exception)
OAuth2LoginFailureHandler->>OAuth2LoginFailureHandler: Extract error code & message
OAuth2LoginFailureHandler->>ObjectMapper: Serialize ErrorResponse to JSON
ObjectMapper-->>OAuth2LoginFailureHandler: JSON string
OAuth2LoginFailureHandler->>Server: Set response (401, JSON body)
Server-->>Client: HTTP 401 Unauthorized with JSON error response
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes Assessment against linked issues
Assessment against linked issues: Out-of-scope changes(No out-of-scope changes were found.) Suggested labels
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Summary of Changes
Hello @wlgns12370, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
I've implemented a dedicated failure logic for Kakao OAuth2 login. This change enhances the user experience by providing a structured JSON error response when authentication fails, rather than a simple redirect. The OAuth2LoginFailureHandler has been updated to directly handle the response, setting the appropriate HTTP status and content type, and serializing detailed error information for the client.
Highlights
- Refactored OAuth2 Login Failure Handling: I've refactored the
OAuth2LoginFailureHandlerto no longer extendSimpleUrlAuthenticationFailureHandler. Instead, it now directly implementsAuthenticationFailureHandler, allowing for more granular control over the failure response. - Custom JSON Error Response: The failure handler now constructs a structured JSON error response using an
ErrorResponseobject. This response includes the HTTP status (401 Unauthorized), a general message, specific error details, and an error code, providing clearer feedback to the client. - JSON Serialization for Error Responses: I've integrated
ObjectMapperto serialize the custom error response into JSON, ensuring that the client receives a consistent and machine-readable error format upon login failure.
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Code Review
This pull request implements a custom OAuth2LoginFailureHandler to return a JSON error response upon a failed OAuth2 login, which is a good improvement over the previous redirect behavior. The implementation is mostly correct, but I've identified an issue with how the response's Content-Type header is set, which could lead to character encoding problems. My suggestion addresses this to ensure the response is correctly handled by clients.
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