This article explains how to standardize API return formats with a generic Result object, define error codes and custom exceptions, implement a global exception handler, use ResponseBodyAdvice for automatic response wrapping, and package these utilities into a reusable Spring Boot starter for cleaner backend code.
This article walks through Spring Boot's default error mapping, shows how to return JSON for AJAX requests and HTML pages for browsers, and provides step‑by‑step code for creating custom exception classes, an error response entity, a Freemarker error template, and a global @ControllerAdvice handler with detailed configuration and testing examples.
This article demonstrates how to create a reusable global exception handling mechanism for Spring Boot applications by defining a unified response class, custom business exception, error enumeration, and a @RestControllerAdvice handler, complete with code examples and testing guidance.
This article explains how to configure Spring Boot to handle default and custom exceptions globally, covering logging of error mappings, adding Fastjson and Freemarker dependencies, configuring properties, defining error entity and custom exception classes, creating an error template, implementing a @ControllerAdvice handler, and testing with sample controllers and JSON responses.
This article explains how to replace repetitive try‑catch‑finally blocks with a unified global exception handling mechanism in Spring Boot, covering its evolution since Spring 3.x, classification of exceptions, the exact matching order, and a complete code example for developers.
