spring-projects/spring-framework · error · BeanInitializationException

Invalid key '{}': expected 'beanName{}property'

Error message

Invalid key '{}': expected 'beanName{}property'

What it means

Error "Invalid key '{}': expected 'beanName{}property'" thrown in spring-projects/spring-framework.

Source

Thrown at spring-beans/src/main/java/org/springframework/beans/factory/config/PropertyOverrideConfigurer.java:132

				if (!this.ignoreInvalidKeys) {
					throw new BeanInitializationException(msg, ex);
				}
				if (logger.isDebugEnabled()) {
					logger.debug(msg, ex);
				}
			}
		}
	}

	/**
	 * Process the given key as 'beanName.property' entry.
	 */
	protected void processKey(ConfigurableListableBeanFactory factory, String key, String value)
			throws BeansException {

		int separatorIndex = key.indexOf(this.beanNameSeparator);
		if (separatorIndex == -1) {
			throw new BeanInitializationException("Invalid key '" + key +
					"': expected 'beanName" + this.beanNameSeparator + "property'");
		}
		String beanName = key.substring(0, separatorIndex);
		String beanProperty = key.substring(separatorIndex + 1);
		this.beanNames.add(beanName);
		applyPropertyValue(factory, beanName, beanProperty, value);
		if (logger.isDebugEnabled()) {
			logger.debug("Property '" + key + "' set to value [" + value + "]");
		}
	}

	/**
	 * Apply the given property value to the corresponding bean.
	 */
	protected void applyPropertyValue(
			ConfigurableListableBeanFactory factory, String beanName, String property, String value) {

		BeanDefinition bd = factory.getBeanDefinition(beanName);

View on GitHub (pinned to e8729d0438)

When it happens

Trigger: Thrown at spring-beans/src/main/java/org/springframework/beans/factory/config/PropertyOverrideConfigurer.java:132 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/8bb3645b82d24905.json. Report an issue: GitHub.