对象的序列化与反序列化

1、被序列化/发布序列化操作的对象，需要实现 Serializable 接口

2、最好添加 private static final long serialVersionUID = 1L; 用于标记对象的版本

3、代码演示

package org.zln.seri;

import org.apache.commons.lang3.builder.ToStringBuilder;

import java.io.Serializable;

/**
 * Created by sherry on 16/9/18.
 */
public class Person implements Serializable{

    private static final long serialVersionUID = 1L;

    private String name;
    private int age;

    @Override
    public String toString() {
        return new ToStringBuilder(this)
                .append("name", name)
                .append("age", age)
                .toString();
    }

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

package org.zln.seri;

import org.junit.Test;

import java.io.*;
import java.util.UUID;

import static org.junit.Assert.*;

/**
 * Created by sherry on 16/9/18.
 */
public class PersonTest {

    private void writeObj(){
        String id = UUID.randomUUID().toString();
        Person person = new Person("张柳宁_"+id,27);
        try {
            File file = new File("person_"+id);
            System.out.println("当前对象文件:"+file.getAbsolutePath());
            ObjectOutputStream objectOutputStream = new ObjectOutputStream(new FileOutputStream(file));
            objectOutputStream.writeObject(person);
            objectOutputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Test
    public void readObj(){

        writeObj();

        File[] files = new File(".").listFiles();
        for (File file:files){
            if (file.getName().startsWith("person")){
                try {
                    ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream(file));
                    Person person = (Person) objectInputStream.readObject();
                    System.out.println(person);

                } catch (IOException e) {
                    e.printStackTrace();
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                }
            }
        }

        deleteObj();
    }

    private void deleteObj() {
        File[] files = new File(".").listFiles();
        for (File file : files) {
            if (file.getName().startsWith("person")) {
                file.delete();
                System.out.println("删除:" + file.getAbsolutePath());
            }
        }
    }

}