java 序列化之 transient

import lombok.AllArgsConstructor;

import lombok.ToString;

import java.io.Serializable;

/**

 * <p>

 * <code>UserInfo</code>

 * </p>

 * Description: 实体

 *

 * @author Mcchu

 * @date 2017/11/9 13:46

 */

@AllArgsConstructor

@ToString

public class UserInfo implements Serializable{

    private static final long serialVersionUID = 996890129747019948L;

    private String name;

    private transient String password;

    private static String position;

}

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

/**

 * <p>

 * <code>TransientTest</code>

 * </p>

 * Description:

 *

 * @author Mcchu

 * @date 2017/11/9 13:45

 */

public class TransientTest {

    public static void main(String[] args) {

        UserInfo userInfo = new UserInfo("jalen", "123456");

        System.out.println(userInfo);

        try {

            // 序列化，被设置为 transient 的属性没有被序列化

            ObjectOutputStream o = new ObjectOutputStream(new FileOutputStream(

                    "user"));

            o.writeObject(userInfo);

            o.close();

        } catch (Exception e) {

            e.printStackTrace();

        }

        try {

            // 重新读取内容

            ObjectInputStream in = new ObjectInputStream(new FileInputStream(

                    "user"));

            UserInfo readUserInfo = (UserInfo) in.readObject();

            // 读取后 psw 的内容为 null

            System.out.println(readUserInfo.toString());

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}