序列化和反序列化

 1 package model;
 2 
 3 import java.io.Serializable;
 4 
 5 public class Person implements Serializable {
 6     /**
 7      * 序列化标记ID
 8      */
 9     private static final long serialVersionUID = 1L;
10     private String name;
11     private int age;
12 
13     public Person(String name, int age) {
14         super();
15         this.name = name;
16         this.age = age;
17     }
18 
19     public String getName() {
20         return name;
21     }
22 
23     public void setName(String name) {
24         this.name = name;
25     }
26 
27     public int getAge() {
28         return age;
29     }
30 
31     public void setAge(int age) {
32         this.age = age;
33     }
34 
35     @Override
36     public String toString() {
37         return "name=" + name + ", age=" + age;
38     }
39 
40 }

View Code

 private static final long serialVersionUID = 1L;//这是序列化标记
当Person这个类中参数改变时候。多加入了一个属性时候，这个类将不能被序列化！
想要序列化的类必须实现Serializable接口。
其实这个接口是没有抽象方法的，其实就是起到标记的作用



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 1 package serialization_01;
 2 
 3 import java.io.FileInputStream;
 4 import java.io.FileOutputStream;
 5 import java.io.IOException;
 6 import java.io.ObjectInputStream;
 7 import java.io.ObjectOutputStream;
 8 import java.text.MessageFormat;
 9 
10 import model.Person;
11 
12 public class serialization_001 {
13 
14     public static void main(String[] args) throws Exception {
15         serializationo1();
16         Person person = overserializationo2();
17         String format = MessageFormat.format("name={0},age={1}", person.getName(), person.getAge());
18         System.out.println(format + "-------反序列化结束！");
19     }
20 
21     private static Person overserializationo2() throws Exception, Exception {
22         /**
23          * 反序列化
24          * 
25          */
26 
27         ObjectInputStream oin = new ObjectInputStream(new FileInputStream("D:\\serializationo1.txt"));
28         Person person = (Person) oin.readObject();// 向下转型
29         return person;
30 
31     }
32 
33     public static void serializationo1() throws IOException, IOException {
34         /**
35          * 序列化
36          */
37         Person person = new Person("张三", 12);
38         ObjectOutputStream oout = new ObjectOutputStream(new FileOutputStream("D:\\serializationo1.txt"));
39         oout.writeObject(person);
40         System.out.println("序列化完成");
41         oout.close();
42 
43     }
44 
45 }