在Java中将对象的临时成员反序列化为非null默认值 [英] Deserialize a transient member of an object to a non-null default in Java

问题描述

public class MyObj implements Serializable {
  private transient Map<String, Object> myHash = new HashMap<String, Object>();
  ...
}

有什么方法可以确保对上面类的对象进行反序列化，将成员myHash设置为新的空Map而不是设置为null？

Is there any way to ensure that when an object of the above class is deserialized the member myHash will be set to a new empty Map rather than be set to null?

推荐答案

public class MyObj implements Serializable {
    private transient Map<String, Object> myHash = new HashMap<String, Object>();

    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
        in.defaultReadObject();

        myHash = new HashMap<String, Object>();
    }
}

这篇关于在Java中将对象的临时成员反序列化为非null默认值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！