java.io.NotSerializableException ObjectInputStream

Question

我试图在文件中保存obj但是java.io.NotSerializableException错误不允许我这样做。 这是我的代码：

import Estrategia.Gestor_nivel;
import Resources.Exceptions.DuplicateLevelsId;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import pp_epoca_normal.Gerir_jogo;


public class Teste {


public void guardar_ficheiro(Object obt) {
    Gerir_jogo teste = (Gerir_jogo) obt;
    System.out.println("sad----  " + teste);
    Gestor_nivel sad;
    try {
        ObjectOutputStream objOut = new ObjectOutputStream(new FileOutputStream("teste.dat"));
        ObjectOutputStream objOut1 = new ObjectOutputStream(new FileOutputStream("teste1.dat"));
        objOut.writeObject(teste);
        objOut1.writeObject(teste.getObjetos());
        sad = (Gestor_nivel) teste.getLevel(0);


        objOut.close();
    } catch (Exception e) {
        e.printStackTrace();
    }

}

public void ler_ficheiro() throws FileNotFoundException, IOException, ClassNotFoundException, DuplicateLevelsId {
    Gerir_jogo asd;
    ObjectInputStream mySecondStream = new ObjectInputStream(new FileInputStream("teste.dat"));
    ObjectInputStream mySecondStream1 = new ObjectInputStream(new FileInputStream("teste1.dat"));

    asd = (Gerir_jogo) mySecondStream.readObject();
    asd.setObjetos((Object[]) mySecondStream1.readObject());

    System.out.println("leu--");
    mySecondStream.close();
    mySecondStream1.close();

}
}

Class gerir jogo

import Container.Contentor;
import Estrategia.Gestor_nivel;
import Resources.Exceptions.DuplicateLevelsId;
import Resources.GameContainerContract;
import Resources.GameLevelContract;

public class Gerir_jogo extends Contentor implements GameContainerContract {
private String nome_jogo;
private boolean mode_jogo_depuracao;

public Gerir_jogo(String nome_jogo, boolean mode_jogo) {
    this.nome_jogo = nome_jogo;
    this.mode_jogo_depuracao = mode_jogo;
}


@Override
public boolean addNewLevel(GameLevelContract glc) throws DuplicateLevelsId {
    Gestor_nivel a;
    boolean asd = false;
    for (Object objetos : this.getObjetos()) {
        a = (Gestor_nivel) objetos;
        if(objetos != null)
        if (a.getId() == glc.getId()) {
            asd = true;
        }
    }
    if (asd == false)
        return super.addObject(glc);
    return false;
}

@Override
public boolean removeLevel(GameLevelContract glc) {
    return super.Encontrar_objeto(super.removeObject(super.findObject(glc)));
}

@Override
public GameLevelContract getLevel(int i) {
    return (GameLevelContract) super.getObject(i);
}

@Override
public int getSize() {
    return super.getCont();
}

@Override
public boolean getDebugMode() {
    return this.mode_jogo_depuracao;
}

@Override
public void setDebugMode(boolean bln) {
    this.mode_jogo_depuracao = bln;
}

@Override
public void setName(String string) {
    this.nome_jogo = string;
}

@Override
public String getName() {
    return this.nome_jogo;
}

是的，有人能帮帮我吗？ 我真的需要把这个保存和读取文件及其中的内容

错误：

java.io.NotSerializableException: pp_epoca_normal.Gerir_jogo
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at Gravar_ler_ficheiro.Teste.guardar_ficheiro(Teste.java:34)
at pp_epoca_normal.PP_epoca_normal.main(PP_epoca_normal.java:77)

我真的不知道该怎么做

Answer 1

您的班级Gerir_jogo必须实现界面Serializable。请看一下这个tutorial。

修改1

您的课程没有实现它，因此，如果是：

则更改

import java.io.Serializable;
public class Gerir_jogo extends Contentor implements GameContainerContract, Serializable {

Answer 2

在Gerir_jogo类上实现Serializable。 将类声明更改为：

import java.io.Serializable;
public class Gerir_jogo extends Contentor implements GameContainerContract, Serializable {

Answer 3

序列化java对象意味着将字节信息作为对象的非静态状态流式传输到外部文件。这里的课程必须通过界面实现＆＃34; Serilizable＆＃34;。

我在这里回复了一个代码，它将状态复制为id，name＆amp;班级＆＃34;员工＆＃34;到目的地的外部文件＆＃34; D：\ Object \ States.txt＆＃34;。这里不可读。

import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class Employee implements Serializable {

    int id;
    String name;
    double sal;



    public Employee(int id, String name, double sal) {
        super();
        this.id = id;
        this.name = name;
        this.sal = sal;
    }


    public String toString() {
        return "Employee [id=" + id + ", name=" + name + ", sal=" + sal + "]";
    }


    public static void main(String[] args) throws Exception {
        Employee e1 = new Employee(101, "Mr. S.V. Roshan", 45000.0D);

        FileOutputStream fout = new FileOutputStream("D:/Object/State.txt");
        ObjectOutputStream out = new ObjectOutputStream(fout);
        out.writeObject(e1);
        out.flush();
        out.close();
        fout.flush();
        fout.close();
        System.out.println("Object serialized successfully!");


    }

}

我想，它可能对你有帮助..！