文件输入输出处理(六)-序列化和反序列化

//如果要支持序列化操作必须实现序列化接口
//账户类
public class Account implements Serializable {
	//手动生成序列号
    private static final long serialVersionUID = 2116137267832764072L;
    
    //账户名
    private  String aname;

    //账户密码
    private String apwd;
    
    //set,get方法省略
    
    @Override
    public String toString() {
        return "Account{" +
                "aname='" + aname + '\'' +
                ", apwd='" + apwd + '\'' +
                '}';
    }
}    

//序列化对象，写入文件
public static void xlhAccount() throws IOException {
    Account account = new Account("KH96","12345");

    //使用对象输出流，将内存中的对象写入到文件
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("D:/test/account.txt"));
    
    //直接写入对象
    oos.writeObject(account);

    oos.close();
    System.out.println("序列化对象写入成功");
}

//反序列化目标对象读取写入序列化的文件，进行反序列化，变为写入的那个目标对象
public static void fxlhAccount() throws IOException, ClassNotFoundException {
    //使用对象输入流，读入写入了序列化对象的文件
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("D:/test/account.txt"));
    
    Account account = (Account) ois.readObject();
    ois.close();
    
    //输出目标对象
    System.out.println(account.toString());

    System.out.println("读取序列化对象，反序列化成功");

}

Account{aname='KH96', apwd='12345'}
读取序列化对象，反序列化成功

//账户类
public class Account implements Serializable {
	//手动生成序列号
    private static final long serialVersionUID = 2116137267832764072L;
    
    //账户名
    private  String aname;
    
    //账户密码
    private String apwd;

    //添加手机
    private  String atel;
    
    //set,get方法省略
    
    @Override
    public String toString() {
        return "Account{" +
                "aname='" + aname + '\'' +
                ", apwd='" + apwd + '\'' +
                ", atel='" + atel + '\'' +
                '}';
    }
}

Account{aname='KH96', apwd='12345', atel='null'}
读取序列化对象，反序列化成功