序列化和反序列化

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序列化：把对象转化为字节序列的过程称为对象的序列化。

反序列化：把字节序列恢复为对象的过程称为对象的反序列化。

把数据跨域JVM生命周期保存下来。

package xulie;

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

public class Test {
   private static void write(List<Student> list) {
       File file = new File("E:\\乱七八糟\\text10.txt");
       // Student对象序列化过程
       ObjectOutputStream out = null;
       try {
           out = new ObjectOutputStream(new BufferedOutputStream(
                   new FileOutputStream(file)));
           out.writeObject(list);//把list写入文件
           out.flush();
       } catch (FileNotFoundException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       } catch (IOException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
   }

   @SuppressWarnings("unchecked")
   private static List<Student> read() {
       File file = new File("E:\\乱七八糟\\text10.txt");
       // Student对象反序列化过程
       ObjectInputStream input = null;
       List<Student> list = null;
       try {
           input = new ObjectInputStream(new BufferedInputStream(
                   new FileInputStream(file)));
           list = (List<Student>) input.readObject();
           for (Student li : list) {
               System.out.println(li.getName()+li.getSex());
           }
           input.close();
       } catch (ClassNotFoundException e) {
           e.printStackTrace();
       } catch (IOException e) {
           e.printStackTrace();
       }
       return list;
   }

   public static void main(String[] args) {
       List<Student> list = new ArrayList<Student>();
       Student st = new Student("Tom", 1);
       Student st2 = new Student("nana", 0);
       list = new ArrayList<Student>();
       list.add(st);
       list.add(st2);
       write(list);
       read();
   }

}

//实体类

package xulie;

import java.io.Serializable;
//Serializable接口是启用其序列化功能
public class Student implements Serializable {
   private String name;
   private int sex;
   public Student() {
   }
   public Student(String name, int sex) {
       this.name = name;
       this.sex = sex;
   }
   public String getName() {
       return name;
   }
   public void setName(String name) {
       this.name = name;
   }
   public int getSex() {
       return sex;
   }
   public void setSex(int sex) {
       this.sex = sex;
   }


}

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