Why Doesn't Spring Boot Auto-Generate My Database Schema?

Unable to Auto-Generate Database Schema with Spring Boot

This issue arises when Spring Boot fails to automatically create the database schema when the application starts up. Here are possible reasons and solutions:

Misplacement of Entity Classes

Ensure that your entity classes reside in the same or a sub-package relative to the class annotated with @EnableAutoConfiguration. Otherwise, Spring Boot may not recognize them, leading to the failure to create database tables.

Incorrect Configuration

Review your configuration in application.properties. Replace any Hibernate-specific options with the following settings:

spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.ddl-auto=update
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=test
spring.datasource.password=

Application Properties Location

Confirm that application.properties is located in src/main/resources. Incorrect placement can prevent Spring Boot from accessing the configuration file.

Incorrect Dialect Specification

Verify that you have specified the correct dialect for your database. A misconfiguration may result in an attempt to connect to an in-memory database instead of your intended target, leading to schema creation failures.

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