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[英]java.io.NotSerializableException thrown even when serializable is implemented
[英]java notserializableexception but implemented serializable
我嘗試使用套接字將對象寫入服務器,
我的對象“播放器”不支持序列化,但是如果我嘗試編寫該對象,則存在一個notserializableexception。 objectoutputstream保存在對象“ player”中,此輸出流寫入對象“ player”,但會引發異常
package ch.tbz.robin.model;
import java.io.*;
import java.net.Socket;
public class Player implements Serializable{
private Socket socket;
private ObjectOutputStream out;
private ObjectInputStream in;
private String username;
private String password;
int id;
int level;
int health;
int xp;
int damage;
public void setSocket(Socket socket) {
this.socket = socket;
try {
out = new ObjectOutputStream(socket.getOutputStream());
in = new ObjectInputStream(socket.getInputStream());
} catch (IOException e) {
e.printStackTrace();
}
}
public ObjectOutputStream getOut() {
return out;
}
public ObjectInputStream getIn() {
return in;
}
public Socket getSocket() {
return socket;
}
public void setUsername(String username) {
this.username = username;
}
public void setHealth(int health) {
this.health = health;
}
public void setId(int id) {
this.id = id;
}
public void setLevel(int level) {
this.level = level;
}
public void setXp(int xp) {
this.xp = xp;
}
public void setDamage(int damage) {
this.damage = damage;
}
public void setPassword(String password) {
this.password = password;
}
public String getUsername() {
return username;
}
public String getPassword() {
return password;
}
public int getLevel() {
return level;
}
public int getHealth() {
return health;
}
public int getXp() {
return xp;
}
public int getDamage() {
return damage;
}
}
在這里,它試圖寫“玩家”
package ch.tbz.robin.application;
import ch.tbz.robin.model.Attack;
import ch.tbz.robin.model.Player;
import ch.tbz.robin.model.Session;
import java.io.*;
import java.net.SocketException;
public class Game extends Thread implements Serializable{
private Session session;
public Game(Session session) {
this.session = session;
player1 = null;
player2 = null;
}
private Player player1;
private Player player2;
public void run(){
player1 = session.getPlayer1();
player2 = session.getPlayer2();
try {
System.out.println("here");
player1.getOut().writeObject(player1);
player1.getOut().writeObject(player2);
player2.getOut().writeObject(player2);
player2.getOut().writeObject(player1);
} catch (IOException e) {
e.printStackTrace();
}
boolean notend = true;
while(notend) {
try {
Attack attack1 = (Attack) player1.getIn().readObject();
Attack attack2 = (Attack) player2.getIn().readObject();
player1.setHealth(player1.getHealth() - attack2.setDamage(player2.getDamage()));
player2.setHealth(player2.getHealth() - attack1.setDamage(player1.getDamage()));
if (player1.getHealth() < 0) {
notend = false;
}
if(player2.getHealth() < 0) {
notend = false;
}
player1.getOut().writeObject(attack1);
player1.getOut().writeObject(attack2);
player2.getOut().writeObject(attack2);
player2.getOut().writeObject(attack1);
} catch (SocketException e){
System.out.println("user disconnected");
notend = false;
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
我怎樣才能解決這個問題?
Player中的所有字段都必須是可序列化的
private ObjectOutputStream out;
private ObjectInputStream in;
正如異常消息已經告訴您的那樣, 這些字段不可序列化。
您需要使它們變為transient
,或者更有可能將它們從Player
移到其他地方。
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