【Java基础】对象序列化与读写

package com.test.io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

/**
 * 例一:多对象序列化保存读取
 *
 */

public class SerializeTest {
    public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException {
        Person person = new Person();
        person.setName("nancy");
        person.setAge("22");
        ObjectOutputStream objectOutputStream = new ObjectOutputStream(
                new FileOutputStream("C:/Users/Administrator/Desktop/person"));
        objectOutputStream.writeObject(person);
        person = null;
        ObjectInputStream objectInputStream = new ObjectInputStream(
                new FileInputStream("C:/Users/Administrator/Desktop/person"));
        person = (Person) objectInputStream.readObject();
        System.out.println(person);
    }
}

class Person implements Serializable{
    @Override
    public String toString() {
        return "Person [name=" + name + ", age=" + age + "]";
    }
    private String name;
    private String age;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
}

运行结果：

Person [name=nancy, age=22]

package com.test.io;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

/**
 * 例二:多对象序列化保存读取
 *
 */
public class SerializeTest {
    public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException {
        Staff staff = new Staff();
        staff.setName("小明");

        Chief chief = new Chief();
        chief.setName("老王");

        staff.setChief(chief);

        File file = new File("C:/Users/Administrator/Desktop/person");
        ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));
        out.writeObject(staff);
        staff = null;
        chief = null;
        ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));
        staff = (Staff) in.readObject();
        System.out.println(staff);
    }
}

class Staff implements Serializable{
    private String name;
    private Chief chief;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Chief getChief() {
        return chief;
    }

    public void setChief(Chief chief) {
        this.chief = chief;
    }

    @Override
    public String toString() {
        return "Staff [name=" + name + ", chief=" + chief + "]";
    }
}

class Chief implements Serializable{
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Chief [name=" + name + "]";
    }
}

运行结果：

Staff [name=小明, chief=Chief [name=老王]]