序列化,反序列化

Person.java

import java.io.Serializable;

public class Person implements Serializable {

    private static final long serialVersionUID = -3727082327999693681L;


    private String id;
    private String name;
    private int age;

    public Person() {
    }

    public Person(String id, String name, int age) {
        this.id = id;
        this.name = name;
        this.age = age;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    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;
    }

    @Override
    public String toString() {
        return "Person{" +
                "id='" + id + ''' +
                ", name='" + name + ''' +
                ", age=" + age +
                '}';
    }
}

ObjectOutputStreamDemo.java

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;

public class ObjectOutputStreamDemo {
    public static void main(String[] args) {
        FileOutputStream fileOutputStream = null;
        ObjectOutputStream objectOutputStream = null;

        try {
            fileOutputStream = new FileOutputStream("c1.txt");
            objectOutputStream  = new ObjectOutputStream(fileOutputStream);
            //向文件中写入一个对象
            objectOutputStream.writeUTF("www.baidu.com百度");
            objectOutputStream.writeObject(new Person("001","张飞",18));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            try {
                objectOutputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                fileOutputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
}

ObjectInputStreamDemo.java

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInputStream;

public class ObjectInputStreamDemo {

    public static void main(String[] args) { 
        FileInputStream fileInputStream = null;
        ObjectInputStream objectInputStream = null;

        try {
            fileInputStream = new FileInputStream("c1.txt");
            objectInputStream = new ObjectInputStream(fileInputStream);
            int length = 0;
            byte[] bytes = new  byte[1024];
            while ((length = objectInputStream.read(bytes))!=-1){
                System.out.println(new String(bytes,0,length));
            }
            Person person =(Person)  objectInputStream.readObject();
            System.out.println(person);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }finally {
            try {
                objectInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                fileInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}