# Server-Side Validation

How Spring Boot checks submitted form data again on the server with validation annotations, @Valid and BindingResult, because the server can never trust user input.

![Cheat sheet: Server-Side Validation](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/e4b7043a61854ca49cff1a166770f458.webp)

- Category: Spring Boot
- Level: Journeyman
- Tags: Spring Boot, thymeleaf
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/form-validation-server-side-validation-cheat-sheet