picture.java

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package com.j2medev.ch8.mmapi;

import java.io.*;

public class Picture {
    
    private String title = "";//标题
    private byte[] img = null;//图片数据

    public Picture() {
    }
    
    public Picture(String title,byte[] _img){
        this.setTitle(title);
        img = _img;
    }
    //序列化过程
    public void serialize(DataOutputStream dos){
        try{
            dos.writeUTF(getTitle());
            dos.writeInt(img.length);//将图片数据的长度写入
            dos.write(getImg());
        }catch(IOException ex){
            ex.printStackTrace();
        }
    }
    //反序列化过程
    public static Picture deserialize(DataInputStream dis){
        try{
            Picture instance = new Picture();
            instance.setTitle(dis.readUTF());
            int length = dis.readInt();//读取图片数据的长度，方便生成数组
            instance.img = new byte[length];
            dis.read(instance.img);
            return instance;
        }catch(IOException ex){
            ex.printStackTrace();
            return null;
        }
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public byte[] getImg() {
        return img;
    }

    public void setImg(byte[] img) {
        this.img = img;
    }
}