Why Isn't My Spring Boot App Automatically Creating the Database Schema?

Automatically Creating Database Schema in Spring Boot

When launching Spring Boot applications, one may encounter issues with automatic database schema creation. The following troubleshooting steps aim to resolve this issue:

1. Entity Class Package:

Ensure that entity classes are located in the same or a sub-package of the class annotated with @EnableAutoConfiguration. Otherwise, Spring will not detect the entities and will not attempt to create the schema.

2. Hibernate Configuration:

Verify that the Hibernate configuration in application.properties is correct. Replace the following properties:

spring.jpa.hibernate.ddl-auto=create
spring.jpa.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect

with:

spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.ddl-auto=update

Additionally, remove the manual driver class loading line: spring.datasource.driverClassName=com.mysql.jdbc.Driver.

3. Properties File Location:

Confirm that application.properties is placed in the src/main/resources directory.

4. Dialect Specification:

If the dialect is not specified correctly, Spring may default to the in-memory database that comes bundled with Boot. Check for console output indicating attempts to connect to a local HSQL instance.

By following these steps, developers can resolve the issue of Spring Boot not automatically creating the database schema upon startup.

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