spring-projects/spring-framework · error · BeanCreationException

Invalid autowire-marked constructors: ${candidates}. Found c

Error message

Invalid autowire-marked constructors: ${candidates}. Found constructor with 'required' Autowired annotation: ${candidate}

What it means

Error "Invalid autowire-marked constructors: ${candidates}. Found constructor with 'required' Autowired annotation: ${candidate}" thrown in spring-projects/spring-framework.

Source

Thrown at spring-beans/src/main/java/org/springframework/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.java:406

											userClass.getDeclaredConstructor(candidate.getParameterTypes());
									ann = findAutowiredAnnotation(superCtor);
								}
								catch (NoSuchMethodException ex) {
									// Simply proceed, no equivalent superclass constructor found...
								}
							}
						}
						if (ann != null) {
							if (requiredConstructor != null) {
								throw new BeanCreationException(beanName,
										"Invalid autowire-marked constructor: " + candidate +
										". Found constructor with 'required' Autowired annotation already: " +
										requiredConstructor);
							}
							boolean required = determineRequiredStatus(ann);
							if (required) {
								if (!candidates.isEmpty()) {
									throw new BeanCreationException(beanName,
											"Invalid autowire-marked constructors: " + candidates +
											". Found constructor with 'required' Autowired annotation: " +
											candidate);
								}
								requiredConstructor = candidate;
							}
							candidates.add(candidate);
						}
						else if (candidate.getParameterCount() == 0) {
							defaultConstructor = candidate;
						}
					}
					if (!candidates.isEmpty()) {
						// Add default constructor to list of optional constructors, as fallback.
						if (requiredConstructor == null) {
							if (defaultConstructor != null) {
								candidates.add(defaultConstructor);
							}

View on GitHub (pinned to e8729d0438)

When it happens

Trigger: Thrown at spring-beans/src/main/java/org/springframework/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.java:406 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of spring-projects/spring-framework@e8729d0438 (2026-08-04). Data as JSON: /data/errors/f8c2c2c97f0812ef.json. Report an issue: GitHub.