JAXB 类实例侦听器

Question

指定基于类实例的 JAXB 侦听器（如在实体 Bean 中）的方法是：afterUnmarshall ， beforeMarshall 但基于每个类实例（通过实现任何接口或通过注释）。

@XmlRootElement(name = "Person")                            // Edited
    public class Person {
        protected String name; //setter getter also implemented

        void beforeMarshall(){
         //..........
        }

        void afterUnmarshall (){  // by implementing any interface or by annotation
         //..........
        }
 } 

Answer 1

JAXB 将为这些事件匹配以下方法签名：

   // This method is called immediately after the object is created and before the unmarshalling of this 
   // object begins. The callback provides an opportunity to initialize JavaBean properties prior to unmarshalling.
   void beforeUnmarshal(Unmarshaller, Object parent);

   //This method is called after all the properties (except IDREF) are unmarshalled for this object, 
   //but before this object is set to the parent object.
   void afterUnmarshal(Unmarshaller, Object parent);

• http://docs.oracle.com/javase/6/docs/api/javax/xml/bind/Unmarshaller.html#unmarshalEventCallback