2024-10-24object references an unsaved transient instance - save the transient instance before flushing 的错误org.hibernate.TransientPropertyValueException:objectreferencesanunsavedtransientinstance-savethetransientinstancebeforeflushing:com.jms.cfc.product.domain.ProductMaintainHistory.product->com.One;nestedexceptionisjava.lang.IllegalSt