java 对象输入输出流

java 支持对对象的读写操作，所操作的对象必须实现Serializable接口。

package vo;

import java.io.Serializable;

public class Animal implements Serializable {
	private static final long serialVersionUID = 1L;
	private String name;
	private Integer weight;
	private String color;
	private String type;
	private Integer age;
	private Integer lifetime;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Integer getWeight() {
		return weight;
	}
	public void setWeight(Integer weight) {
		this.weight = weight;
	}
	public String getColor() {
		return color;
	}
	public void setColor(String color) {
		this.color = color;
	}
	public String getType() {
		return type;
	}
	public void setType(String type) {
		this.type = type;
	}
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	public Integer getLifetime() {
		return lifetime;
	}
	public void setLifetime(Integer lifetime) {
		this.lifetime = lifetime;
	}
	public Animal(String name, Integer weight, String color, String type, Integer age, Integer lifetime) {
		super();
		this.name = name;
		this.weight = weight;
		this.color = color;
		this.type = type;
		this.age = age;
		this.lifetime = lifetime;
	}
	@Override
	public String toString() {
		return "Animal [name=" + name + ", weight=" + weight + ", color=" + color + ", type=" + type + ", age=" + age + ", lifetime=" + lifetime + "]";
	}
	
}

package objectstream;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import vo.Animal;

public class TestObjectStream {
	public static void main(String[] args) {
		try {
			ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(new File("d:/oos.dat")));
			Animal a1 = new Animal("tiger", 120, "red", "cat", 12, 20);
			Animal a2 = new Animal("eagle", 10, "gold", "bird", 6, 10);
			oos.writeObject(a1);
			oos.writeObject(a2);
			oos.flush();
			oos.close();
			
			ObjectInputStream ois = new ObjectInputStream(new FileInputStream("d:/oos.dat"));
			Animal ra1 = (Animal) ois.readObject();
			System.out.println(ra1.toString());
			Animal ra2 = (Animal) ois.readObject();
			System.out.println(ra2.toString());
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

输出结果：

Animal [name=tiger, weight=120, color=red, type=cat, age=12, lifetime=20]
Animal [name=eagle, weight=10, color=gold, type=bird, age=6, lifetime=10]