java Java transient关键字的作用

Posted 2021-05-08

@Data
public class Account implements Serializable {
    private String name;
    private transient String password;
}

public static void main(String[] args) throws Exception {
    Account account = new Account("vincent", "123456");
    ObjectOutputStream os = new ObjectOutputStream(new FileOutputStream("account.txt"));
    os.writeObject(account);
    os.flush();
    os.close();

    // 被 transient 关键字修饰的字段不会被序列化
    // 有时候我们需要将对象序列化，但是又不想将密码或者秘钥之类的敏感字段序列化，就可以通过 transient 修饰
    ObjectInputStream is = new ObjectInputStream(new FileInputStream("account.txt"));
    System.out.println(is.readObject());
    is.close();
}