可序列化的ObjecOutputStream對象

Question

我想使服務器客戶端應用程序，並使用ObjecOutputStream發送對象到客戶端，但在我想發送的對象是ObjectOutputStream對象，我需要序列化它以某種方式，但我不知道如何...任何意見？

我需要發送的對象播放器：

public class Player implements Serializable{ 
    ObjectOutputStream out; 
    public Player(ObjectOutputStream out){ 
     this.out = out; 
    } 
    public send(){ 
     this.out.writeObject(this); 
    } 
} 

發射後類似的代碼，像這樣的exeption顯示此：
java.io.NotSerializableException：java.io.ObjectOutputStream中

Answer 1

由於ObjectOutputStream沒有實現Serializable，所以你Player類不能被序列化。要解決這個問題：

class Player implements Serializable { 
    private transient ObjectOutputStream out; 

    // the rest 
} 

在我看來，在Player不應該知道如何將自身發送。你可以引入一個新類PlayerSender：

class PlayerSender { 

    private ObjectOutputStream outputStream; 

    public PlayerSender(OutputStream out) { 
     this.outputStream = new ObjectOutputStream(out); 
    } 

    public void send(Player player) { 
     this.outputStream.writeObject(player); 
    } 

} 

//---- Usage ---- 

List<Player> players = // make a bunch of players; 

PlayerSender playerSender = new PlayerSender(getNetworkStream()); 
//PlayerSender playerSender = new PlayerSender(new FileOutputStream("/players/list.txt"); 
//PlayerSender playerSender = new PlayerSender(socketConnection.getOutputStream()); 
for (Player player : players) { 
    playerSender.send(player); 
} 

Answer 2

下面是一個代碼可以幫助

public void toTXT(String fileName) 
{ 
    try 
    { 
     // Serialize data object to a file 
     ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(fileName)); 
     out.writeObject(player); // player is an instance of Player class 
     out.close(); 


    } 
    catch (Exception e) 
    { 

    } 
} 

這是編寫代碼的正確方法：

public class Player implements Serializable{ 

    public Player(){ 

    } 
    public ObjectOutputStream send(){ 
     ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("filename.txt")); 
     this.out.writeObject(this); 
     return out; 
    } 
} 

，這是你main()功能：

public static void main(String args[]) 
{ 

    Player player = new Player(); 
    player.send(); 

}