Why Doesn't My Spring Boot App Create the Database Schema on Startup?

Spring Boot Fails to Create Database Schema on Startup

Creating database schemas automatically during Spring Boot application startup is a common pain point. Here's a comprehensive analysis of potential issues and solutions.

Possible Causes and Solutions:

1. Incorrect Class Packaging:
Ensure that your entity classes are located in the same package or a sub-package containing the class annotated with @EnableAutoConfiguration. This is necessary for Spring to recognize and process them.

2. Hibernate Configuration Discrepancies:
Use the following revised configuration for Hibernate:

spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.ddl-auto=update
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver

Avoid manually loading the driver class as it is automatically registered.

3. Application Properties Location:

Verify that your application.properties file is placed in the correct location: src/main/resources. An incorrect location can prevent Spring from reading the properties.

4. Specified Dialect Validation:

Confirm that the spring.jpa.database property has the correct value: MYSQL. If the dialect is incorrectly specified, Spring may default to an in-memory database, resulting in a failure to update the schema.

By following these steps, you should be able to resolve the issue of Spring Boot not creating database schemas automatically.

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