Org. hibernate. propertyvalueexception: Not-null property references a null or transient value

Org. hibernate. propertyvalueexception: Not-null property references a null or transient value:

Com. bjcx. Project. entity. task. equipmenttable. projportfolioid
At org. hibernate. Engine. nullability. checknullability (nullability. Java: 72)
At org. hibernate. event. Def. abstractsaveeventlistener. descrimsaveorreplicate

A property that cannot be null references a null or invalid value.

Cause: In ***. HBM. XML

<Property name = "projportfolioid" column = "projportfolioid"
Type = "big_decimal" not-null = "true" length = "10"/>

, Not-null = "true", which means that the property projportfolioid cannot be empty, but is null if no value is assigned to it in actionform, so an error is reported!

ArticleSource: http://zgphacker2010.iteye.com/blog/983190