java集合序列化

Question

包装com.company；进口java.io.*；

导入静态com。公司主要的磁盘

公共类存储系统{private static final String FILE_NAME=“D:/Songs.data”；

public void serialization() {
    File file = new File (FILE_NAME);
    ObjectOutputStream oos = null;

    try {
        FileOutputStream fos = new FileOutputStream(file);
        if(fos != null) {
            oos = new ObjectOutputStream(fos);
            for (Song song : disk.getSongList()) {
                oos.writeObject(song);
            }
        }
    }
    catch (FileNotFoundException e){
        e.printStackTrace();
    }
    catch (IOException e) {
        e.printStackTrace();
    }
    finally {
        if(oos != null){
            try {
                oos.close();
            }
            catch (IOException e){
                e.printStackTrace();
            }
        }
    }
}



public static void deserialization() throws InvalidObjectException {
    File file = new File (FILE_NAME);
    ObjectInputStream ois = null;
    try {
        FileInputStream fis = new FileInputStream(file);
        if(fis != null) {
            for(int i = 0; i < 3; i++)
            {
                ois = new ObjectInputStream(fis);
                Song song = (Song) ois.readObject();
                disk.addSong(song);
            }
        }
    }
    catch (FileNotFoundException e){
        e.printStackTrace();
    }
    catch (IOException | ClassNotFoundException e) {
        e.printStackTrace();
    }
    finally {
        try {
            ois.close();
        }
        catch (IOException e){
            e.printStackTrace();
        }
    }
}

}

无法序列化/反序列化。我有一个应该写入文件然后输出的歌曲列表。我不明白为什么它只读取一首歌。

档案：�Øsrcom。公司歌曲“Ї……ј04јJ L genget Ljava/lang/String；L nameq~L timeq~xpt 2:16t有毒Phonksq~t 2:28 GAZt Phonksq~t 3:23t Warriort 重金属 t 2:59t边界可选(岩石)t 6:23t进入沙曼重金属 t Phonkt 2:54sq t岩石)警报 2:28sq

控制台输入：有毒2:16 Phonk GAZ 2:28 Phonk Warrior 3:23重金属边界2:59可选岩石进入sandman 6:23重金属Phonk 2:54报警岩石2:28你做什么流行2:57击中Phonk 2:18

控制台输出： Song{name='Toxic'， time='Phonk'， genge='2:16'}

请告诉我有什么问题

Answer 1

问题似乎出在反序列化方法上。为什么要为（int i=0；i）做这个循环

    public static void deserialization() throws InvalidObjectException {
        File file = new File (FILE_NAME);           
        try {
            FileInputStream fis = new FileInputStream(file);
            ObjectInputStream ois = new ObjectInputStream(fis);
            if(fis != null) {
                  boolean cont = true;
                  while(cont){
                    Song song = (Song) ois.readObject();
                    if(song != null) {
                        disk.addSong(song);
                    }else {
                        cont = false;
                    }
                }
           }
        }
        catch (FileNotFoundException e){
            e.printStackTrace();
        }
        catch (IOException | ClassNotFoundException e) {
            e.printStackTrace();
        }
        finally {
            try {
                ois.close();
            }
            catch (IOException e){
                e.printStackTrace();
            }
        }
    }

我希望这对你有帮助。