java

Spring Boot unsatisfied dependency injection

UnsatisfiedDependencyException.*Error creating bean with name

Fixes

1.Verify the required bean exists and is properly annotated
2.Use @Qualifier to disambiguate when multiple beans of same type exist
3.Check that required dependency modules are on the classpath

spring-bootdependency-injection

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 conditional bean misconfiguration

ConditionalOnMissingBean.*did not find any beans

•Check @ConditionalOnMissingBean conditions match the expected bean type
•Verify bean registration order with @AutoConfigureBefore/@AutoConfigureAfter