NotConstructorBoundInjectionFailureAnalyzer Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/context/properties/NotConstructorBoundInjectionFailureAnalyzer.java lines 42–89

class NotConstructorBoundInjectionFailureAnalyzer
		extends AbstractInjectionFailureAnalyzer<NoSuchBeanDefinitionException> implements Ordered {

	@Override
	public int getOrder() {
		return 0;
	}

	@Override
	protected @Nullable FailureAnalysis analyze(Throwable rootFailure, NoSuchBeanDefinitionException cause,
			@Nullable String description) {
		InjectionPoint injectionPoint = findInjectionPoint(rootFailure);
		if (isConstructorBindingConfigurationProperties(injectionPoint)) {
			String simpleName = injectionPoint.getMember().getDeclaringClass().getSimpleName();
			String action = "Update your configuration so that " + simpleName + " is defined via @"
					+ ConfigurationPropertiesScan.class.getSimpleName() + " or @"
					+ EnableConfigurationProperties.class.getSimpleName() + ".";
			return new FailureAnalysis(
					simpleName + " is annotated with @" + ConstructorBinding.class.getSimpleName()
							+ " but it is defined as a regular bean which caused dependency injection to fail.",
					action, cause);
		}
		return null;
	}

	@Contract("null -> false")
	private boolean isConstructorBindingConfigurationProperties(@Nullable InjectionPoint injectionPoint) {
		return injectionPoint != null && injectionPoint.getMember() instanceof Constructor<?> constructor
				&& isConstructorBindingConfigurationProperties(constructor);
	}

	private boolean isConstructorBindingConfigurationProperties(Constructor<?> constructor) {
		Class<?> declaringClass = constructor.getDeclaringClass();
		BindMethod bindMethod = ConfigurationPropertiesBean.deduceBindMethod(declaringClass);
		return MergedAnnotations.from(declaringClass, SearchStrategy.TYPE_HIERARCHY)
			.isPresent(ConfigurationProperties.class) && bindMethod == BindMethod.VALUE_OBJECT;
	}

	private @Nullable InjectionPoint findInjectionPoint(Throwable failure) {
		UnsatisfiedDependencyException unsatisfiedDependencyException = findCause(failure,
				UnsatisfiedDependencyException.class);
		if (unsatisfiedDependencyException == null) {
			return null;
		}
		return unsatisfiedDependencyException.getInjectionPoint();
	}

}