Apache Struts 2 Documentation > Home > Guides > Core Developers Guide > Annotations > KeyProperty Annotation |
Sets the KeyProperty for type conversion.
The KeyProperty annotation must be applied at field level.
This annotation should be used with Generic types, if the key property of the key element needs to be specified.
Parameter | Required | Default | Description |
---|---|---|---|
value | no | id | The key property value. |
// The key property for User objects within the users collection is the <code>userName</code> attribute. @KeyProperty( value = "userName" ) protected List<User> users = null;