Скачать или смотреть Spring Boot Bean Validation – Load Messages from Database (No messages.properties)

In this video, we will learn how to fetch Spring Boot validation messages directly from the database instead of using messages.properties.
Most tutorials show validation messages coming from a properties file, but real enterprise applications require dynamic validation messages that can be updated without redeploying the application.
In this tutorial, we solve that problem using a custom MessageSource and ValidationConfig.

🔍 What You Will Learn
• How Spring Boot validation works internally
• How messages are picked from messages.properties by default
• How to override the default MessageSource
• How to fetch validation messages from a database
• How DatabaseMessageSource works internally
• Role of LocalValidatorFactoryBean
• End-to-end validation flow explained
• H2 database setup for validation messages
• Common mistakes & best practices

🧠 Internal Flow Explained
@NotBlank → Hibernate Validator → LocalValidatorFactoryBean → Custom MessageSource →
Database

🛠 Tech Stack Used
• Spring Boot
• Bean Validation (Hibernate Validator)
• Spring Data JPA
• H2 Database
• Custom MessageSource
• application.properties

📌 Who Should Watch This?
• Java Developers
• Spring Boot Beginners & Intermediate Developers
• Backend Developers
• Interview Preparation
• Enterprise Application Developers

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