向文件中存取对象,对象要实现序列化接口

package com.java.test;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

public class TestObjectOutPutStream {

      /**

       * 向文件中写入一个对象,该对象在文件里是以二进制存放的.

       * @param student

       */

      public static void testWriter(Student student){

             try {

                  ObjectOutputStream oos = new ObjectOutputStream( new BufferedOutputStream(new FileOutputStream("F://file.txt" )));

                   oos.writeObject( student);

                   oos.flush();

                   oos.close();

                  

            } catch (IOException e) {

                   e.printStackTrace();

            } finally{

                  System. out.println( "写入成功!");

            }

      }

      /**

       * 从文件中读取对象,并强制转换对象

       */

      public static void testReader(){

            

             try {

                  ObjectInputStream ois = new ObjectInputStream( new BufferedInputStream(new FileInputStream("F://file.txt" )));

                  Student stu = (Student) ois.readObject();

                  System. out.println( stu);

                   ois.close();

                  

            } catch (IOException e) {

                   // TODO Auto-generated catch block

                   e.printStackTrace();

            } catch (ClassNotFoundException e) {

                   // TODO Auto-generated catch block

                   e.printStackTrace();

            } finally{

                  System. out.println( "读取成功!");

            }

      }

      

      

      public static void main(String[] args) {

            Student student = new Student();

             student.setId(99);

             student.setName( "maliao");

             student.setScore(899);

            

             testReader();

      }

      

}