你不知道的Java学习笔记19-- 对象序列化

对象序列化

1、序列化是对引用类型的读写操作。

2、将对象从程序写入外部存储器的过程就是序列化

3、将对象从外部存储器读到程序的过程就是反序列化

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;
/*
 * 对象序列化:测试对象输入流、输出流
 */
public class TestObjectInputStreamOutputStream {
    public static void main(String[] args) {
    writeObj();
    readObj();
    }
    /*
     * 对象序列化:对象输出流--写
     */
    public static void writeObj(){
        Person p=new Person("小林",20);
        File f=new File("E:\\123.txt");
        FileOutputStream fos=null;
        ObjectOutputStream oos=null;
        try {
            fos = new FileOutputStream(f);
            oos=new ObjectOutputStream(fos);
            oos.writeObject(p);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally
        {
            try {
                fos.close();
                oos.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
    /*
     * 对象反序列化:对象输入流-读
     */
    public static void readObj(){
        File f=new File("E:\\123.txt");
        FileInputStream fis=null;
        ObjectInputStream ois=null;
        try {
            fis = new FileInputStream(f);
            ois=new ObjectInputStream(fis);
            Person p=(Person)ois.readObject();
            System.out.println(p.name+" "+p.age);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally
        {
            try {
                fis.close();
                ois.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
    /*
     * 创建Person类
     * 属性:姓名,年龄
     */
}
class Person implements Serializable{
    String name;
    int age;
    public Person(){
    }
    public Person(String name,int age)
    {
        super();
        this.name=name;
        this.age=age;
    }
}

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转载自blog.csdn.net/lin434406218/article/details/52727954