Stop Making These File Upload Mistakes in Spring Boot

File upload in Spring Boot looks simple… until it starts breaking. At first, it’s just one endpoint. Then suddenly: file logic spreads across your codebase validation is inconsistent storage becomes hard to change I’ve seen this turn messy very quickly. Here are the most common mistakes and how to avoid them. Why file upload implementations go wrong File upload is deceptively simple. But as soon as you add: validation storage file retrieval the logic starts sprea