序列化，反序列化，不序列化

序列化：对象-->流数据（ObjectOutputStream）

反序列化:流数据-->对象（ObjectInputStream）

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

/*
* 序列化流：把对象按照流一样的方式存入文本文件或者在网络中传输。对象 -- 流数据(ObjectOutputStream)
* 反序列化流:把文本文件中的流对象数据或者网络中的流对象数据还原成对象。流数据 -- 对象(ObjectInputStream)
*/
public class ObjectStreamDemo {
public static void main(String[] args) throws IOException,
ClassNotFoundException {
// write();

read();
}

private static void read() throws IOException, ClassNotFoundException {
// 创建反序列化对象
ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
"os.txt"));

// 还原对象
Object obj = ois.readObject();

// 释放资源
ois.close();

// 输出对象
System.out.println(obj);
}

private static void write() throws IOException {
// 创建序列化流对象
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(
"oos.txt"));

// 创建对象
Person p = new Person("123", 45);

// public final void writeObject(Object obj)
oos.writeObject(p);

// 释放资源
oos.close();
}
}


序列化类

import java.io.Serializable;

public class Person implements Serializable {
private static final long serialVersionUID = -2071565876962058567L;//使序列化有固定id

private String name;

// private int age;

private transient int age;//<span style="font-family: Arial, Helvetica, sans-serif;">transient关键字不被序列化</span>

// int age;

public Person() {
super();
}

public Person(String name, int age) {
super();
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;
}

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