transient关键字

1.描述

transient关键字只可以修饰全局变量, 不可以修饰本地变量、方法及类，被trasient关键字修饰的变量不可以被序列化

2.具体例子

@Data
@NoArgsConstructor
@AllArgsConstructor
@ToString
public class TransientDomain implements Serializable {

    private String keyOne;

    private transient String keyTwo;
}

public static void main(String[] args) throws Exception {
    TransientDomain transientDomain = new TransientDomain();
    transientDomain.setKeyOne("valueOne");
    transientDomain.setKeyTwo("valueTwo");

    File targetFile = new File("temp3.txt");
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(targetFile));
    oos.writeObject(transientDomain);
    oos.flush();
    oos.close();

    ObjectInputStream ois = new ObjectInputStream(new FileInputStream(targetFile));
    TransientDomain newTransientDomain = (TransientDomain) ois.readObject();
    ois.close();
    System.out.println(newTransientDomain);
}
输出结果：TransientDomain(keyOne=valueOne, keyTwo=null)