import org.springframework.cloud.bootstrap.config.PropertySourceLocator; //导入依赖的package包/类
@Bean
public PropertySourceLocator vaultPropertySourceLocator(VaultOperations operations,
		VaultProperties vaultProperties,
		VaultGenericBackendProperties vaultGenericBackendProperties,
		ObjectFactory<SecretLeaseContainer> secretLeaseContainerObjectFactory) {

	VaultConfigTemplate vaultConfigTemplate = new VaultConfigTemplate(operations,
			vaultProperties);

	PropertySourceLocatorConfiguration propertySourceLocatorConfiguration = getPropertySourceConfiguration(vaultGenericBackendProperties);

	if (vaultProperties.getConfig().getLifecycle().isEnabled()) {

		// This is to destroy bootstrap resources
		// otherwise, the bootstrap context is not shut down cleanly
		applicationContext.registerShutdownHook();

		SecretLeaseContainer secretLeaseContainer = secretLeaseContainerObjectFactory
				.getObject();
		secretLeaseContainer.start();

		return new LeasingVaultPropertySourceLocator(vaultProperties,
				propertySourceLocatorConfiguration, secretLeaseContainer);
	}

	return new VaultPropertySourceLocator(vaultConfigTemplate, vaultProperties,
			propertySourceLocatorConfiguration);
}
 

import org.springframework.cloud.bootstrap.config.PropertySourceLocator; //导入依赖的package包/类
/**
 * 是否启用了Spring Cloud Config获取配置资源
 *
 * @param propertySourceLocators
 * @return
 */
private boolean isHasCloudConfigLocator(List<PropertySourceLocator> propertySourceLocators) {
    for (PropertySourceLocator sourceLocator : propertySourceLocators) {
        if (sourceLocator instanceof ConfigServicePropertySourceLocator) {
            return true;
        }
    }
    return false;
}