Exception Handling Articles
3 articles about Exception Handling. Explore Spring Boot implementation, design, and operations across related topics.
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How to Validate List<DTO>, @RequestParam, and @PathVariable in Spring Boot - Why @Valid Doesn't Work and How to Handle the 3 Exceptions
A reverse-lookup guide to why element validation of a List-typed DTO annotated with @Valid, or @Min on @RequestParam/@PathVariable, doesn't work in Spring Boot 3.x, and how to fix it. Covers the differences between the 3 exceptions, unified error responses with @RestControllerAdvice, and indexed messages in the users[1].name format.
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Implementing Spring Boot's GlobalExceptionHandler for Production Use
This article explains how to implement Spring Boot's GlobalExceptionHandler (@RestControllerAdvice) with production-ready quality. It introduces implementation patterns needed in the operational phase, such as stack trace logging, traceID assignment via MDC, and custom property extensions to ProblemDetail, with concrete code examples.
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How to Return Unified Error Responses in Spring Boot REST APIs - Using @ControllerAdvice and @ExceptionHandler (with @RestControllerAdvice / ResponseEntityExceptionHandler)
Struggling with inconsistent error responses across Controllers? This guide explains how to use @ControllerAdvice, @RestControllerAdvice, and @ExceptionHandler in Spring Boot REST APIs to return validation errors, business errors, and system errors in a unified JSON format. It also covers the design pattern of extending ResponseEntityExceptionHandler to standardize Spring MVC's built-in exceptions, with code examples.