java

Flyway migration checksum mismatch

spring\.flyway.*FlywayMigrateException.*migration checksum mismatch

Fixes

1.Never modify already-applied migrations - create a new one
2.Use flyway repair to fix checksum in schema history table
3.Set flyway.validate-migration-naming=true to catch naming issues early

spring-bootflywaymigration

Related Errors

Spring Boot bean not found in application context

NoSuchBeanDefinitionException.*No qualifying bean of type

•Add @Component/@Service/@Repository annotation to the class
•Ensure the package is scanned: check @ComponentScan or @SpringBootApplication basePackages

Spring circular dependency during bean creation

BeanCurrentlyInCreationException.*Requested bean is currently in creation

•Use @Lazy annotation on one of the circular dependencies
•Refactor to break the circular dependency with an event or interface

Spring Boot unsatisfied dependency injection

UnsatisfiedDependencyException.*Error creating bean with name

•Verify the required bean exists and is properly annotated
•Use @Qualifier to disambiguate when multiple beans of same type exist