生成 5个学生并使它们存放在文件中,用到序列化和反序列化

 

//需求 :   生成 5个学生并使它们存放在文件中,用到序列化和反序列化
package Zuoye01;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;

public class SerializeTest {

    public static void main(String[] args) {

        List <Student> stus = new ArrayList<>(); 
        
    
    
        stus.add(new Student("小笑", 19, "男"));
        stus.add(new Student("小龙", 24, "男"));
        stus.add(new Student("张三", 18, "男"));
        stus.add(new Student("雪莉", 17, "女"));
        stus.add(new Student("小华", 19, "女"));
        // 用序列化和反序列化

        // 1 要记得实现Serializeable.. 才能具有能序列化和反序列化的功能
        // 2 先写出地址 输出 :FileOutputStream / 输入:FileInputStream
        // \再分别写ObjectOutPutStream / ObjectInputStream两个类

        // 应该先输出 程序=> 文件夹 写
        FileOutputStream fos = null;
        ObjectOutputStream os = null;

        // 输入 再读取 文件夹 = > 程序

        FileInputStream fis = null;
        ObjectInputStream ois = null;

        //开始输出  
        
        try {
            fos = new FileOutputStream("D:/MyDemo/Student.txt");
            fis = new FileInputStream("D:/MyDemo/Student.txt");

            try {
                os = new ObjectOutputStream(fos);
                
             os.writeObject(stus);
                //序列化成功
             os.flush();
             //开始读取
             //开始反序列化
             
                ois = new ObjectInputStream(fis);
                try {
                    List<Student> stu1 = (List<Student>)ois.readObject();
                    for (int i = 0; i < stus.size(); i++) {
                        
                        System.out.println("我的名字是:"+stus.get(i).getName());
                        System.out.println("我的年龄是:"+stus.get(i).getAge());
                        System.out.println("我的性别是:"+stus.get(i).getGender());
                    
                        System.out.println("---------------------\n");
                    }
                    
                } catch (ClassNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
            
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally {
            try {
                ois.close();
                fis.close();
                os.close();
                fos.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
        }
        }
    


}

 

package Zuoye01;

import java.io.Serializable;

public class Student implements Serializable{
    //创建学生类模板
    private String name;
    private int age;
    private String gender;
    public Student(String name, int age, String gender) {
        super();
        this.name = name;
        this.age = age;
        this.gender = gender;
    }
    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;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    
    
    

}