序列化和序列话反 入门案例

1、序列化和反序列化分别是什么？

2、序列化和反序列化分别有什么意义？

3、序列化和反序列化怎么用？

1、序列化是将java对象转换成字节文件的过程；

反序列化是将字节文件转换成java对象的过程。

2、序列化是为了将内存中的文件永久保存；

      序列化是为了将文件进行网络交换。

3、下面是一个 序列化和反序列化的案例

package main;

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


//对象的序列化和反序列化 入门
public class Test {


public static void main(String[] args) throws IOException,
ClassNotFoundException {
// SerializePerson();
Person pe = DeserializePerson();
System.out.println("age is : " + pe.getAge());
System.out.println("name is : " + pe.getName());
System.out.println("sex is : " + pe.getSex());
}


public static void SerializePerson() throws IOException {
Person pe = new Person();
pe.setAge("22");
pe.setName("Ban");
pe.setSex("man");


FileOutputStream fos = new FileOutputStream("E:/test.txt");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(pe);
oos.close();


System.out.println("serialize successfully!!");
}


public static Person DeserializePerson() throws IOException,
ClassNotFoundException {
FileInputStream fis = new FileInputStream("E:/test.txt");
ObjectInputStream ois = new ObjectInputStream(fis);


Person pe = (Person) ois.readObject();
return pe;


}
}

附：实体类

package main;


import java.io.Serializable;


public class Person  implements Serializable{


private static final long serialVersionUID = 1L;

private String name;
private String age;
private String sex;
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;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}


}

tips：实体类必须实现serializable接口  并且 写上  private static  final long serivalVersionUID = 1L;

不然会报错   NoSerival.....的错