序列化流与反序列化流

朱雀 2023-08-17 16:09 142阅读 0赞

序列化：将对相中的数据写入到文件。

反序列化：将对象的数据从文件中读取出来。

要实现序列化或反序列化必须实现接口Serializable 。

1、序列化

package pers.zxc.xulie;
    
    import java.io.Serializable;
    
    public class Person implements Serializable{
        private String name;
        private int age;
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public int getAge() {
            return age;
        }
    
        public void setAge(int age) {
            this.age = age;
        }
    
        public String toString() {
            return "Person [name=" + name + ", age=" + age + "]";
        }
    
        public Person(String name, int age) {
            this.name = name;
            this.age = age;
        }
    
    }

package pers.zxc.xulie;
    
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.ObjectOutputStream;
    
    public class Test {
        public static void main(String[] args) throws IOException {
            FileOutputStream fos = new FileOutputStream("E:\\IO流\\java\\2221.txt");
    
            ObjectOutputStream oos = new ObjectOutputStream(fos);
        
            oos.writeObject(new Person("Tom", 12));
    
            oos.close();
    
        }
    }

![1392562-20190817111326054-1144577449.png][]

运行结果不能看懂，但是可以通过反序列化将数据读出来。

2、反序列化

package pers.zxc.xulie;
    
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.io.ObjectInputStream;
    
    public class ReadDemo {
        public static void main(String[] args) throws IOException,
                ClassNotFoundException {
            FileInputStream fis = new FileInputStream("E:\\IO流\\java\\2221.txt");
            ObjectInputStream ois = new ObjectInputStream(fis);
            Person obj = (Person) ois.readObject();
            System.out.println(obj.toString());
    
        }
    }

![1392562-20190817111753786-188153115.png][]

将序列化的结果读了出来。

3、瞬态关键字transient

被transient关键字修饰后，属性就不会被序列化。同时，被静态修饰符修饰后的属性也不会被序列化。

package pers.zxc.xulie;
    
    import java.io.Serializable;
    
    public class Person implements Serializable{
        private String name;
        private transient int age;
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public int getAge() {
            return age;
        }
    
        public void setAge(int age) {
            this.age = age;
        }
    
        public String toString() {
            return "Person [name=" + name + ", age=" + age + "]";
        }
    
        public Person(String name, int age) {
            this.name = name;
            this.age = age;
        }
    
    }

转载于:https://www.cnblogs.com/zhai1997/p/11367955.html

[1392562-20190817111326054-1144577449.png]: /images/20230810/b0075a411c4949c581be590950ad1ad5.png
[1392562-20190817111753786-188153115.png]: /images/20230810/9616dd11cdeb42b888f6e1f91d645e77.png