使用 GSON 序列化 JavaFX 模型

我目前正在学习一个教程来帮助我了解JavaFX的工作原理，在本教程中，他们正在构建一个小应用程序来管理人们的信息。本教程还使用XML进行加载/保存，但我不想使用XML，而是想使用JSON。我有一个使用 、 和 的模型。我的问题是，我不完全确定加载和保存它的最佳方法是什么，如果没有它保存不必要的字段，并且在Gson不抛出错误的情况下加载。PersonStringPropertyIntegerPropertyObjectProperty

人

import java.time.LocalDate;

import javafx.beans.property.IntegerProperty;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;

/**
 * Model class for a Person.
 *
 * @author Marco Jakob
 */
public class Person {

    private final StringProperty firstName;

    private final StringProperty lastName;

    private final StringProperty street;

    private final IntegerProperty postalCode;

    private final StringProperty city;

    private final ObjectProperty<LocalDate> birthday;

    /**
     * Default constructor.
     */
    public Person() {
        this(null, null);
    }

    /**
     * Constructor with some initial data.
     * 
     * @param firstName
     * @param lastName
     */
    public Person(String firstName, String lastName) {
        this.firstName = new SimpleStringProperty(firstName);
        this.lastName = new SimpleStringProperty(lastName);

        // Some initial dummy data, just for convenient testing.
        this.street = new SimpleStringProperty("some street");
        this.postalCode = new SimpleIntegerProperty(1234);
        this.city = new SimpleStringProperty("some city");
        this.birthday = new SimpleObjectProperty<LocalDate>(LocalDate.of(1999, 2, 21));
    }

    public String getFirstName() {
        return firstName.get();
    }

    public void setFirstName(String firstName) {
        this.firstName.set(firstName);
    }

    public StringProperty firstNameProperty() {
        return firstName;
    }

    public String getLastName() {
        return lastName.get();
    }

    public void setLastName(String lastName) {
        this.lastName.set(lastName);
    }

    public StringProperty lastNameProperty() {
        return lastName;
    }

    public String getStreet() {
        return street.get();
    }

    public void setStreet(String street) {
        this.street.set(street);
    }

    public StringProperty streetProperty() {
        return street;
    }

    public int getPostalCode() {
        return postalCode.get();
    }

    public void setPostalCode(int postalCode) {
        this.postalCode.set(postalCode);
    }

    public IntegerProperty postalCodeProperty() {
        return postalCode;
    }

    public String getCity() {
        return city.get();
    }

    public void setCity(String city) {
        this.city.set(city);
    }

    public StringProperty cityProperty() {
        return city;
    }

    public LocalDate getBirthday() {
        return birthday.get();
    }

    public void setBirthday(LocalDate birthday) {
        this.birthday.set(birthday);
    }

    public ObjectProperty<LocalDate> birthdayProperty() {
        return birthday;
    }
}

保存哪里是 s 的personDataObservableListPerson

try (Writer writer = new FileWriter(file)) {
    new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create().toJson(personData, writer);
}

这种保存方式目前会产生许多不必要的字段（如 、等）的保存，而此时可能是namevalue"firstName": "Hans"

[{
    "firstName": {
        "name": "",
        "value": "Hans",
        "valid": true,
        "helper": {
            "observable": {}
        }
    },
    "lastName": {
        "name": "",
        "value": "Muster",
        "valid": true,
        "helper": {
            "observable": {}
        }
    },
    "street": {
        "name": "",
        "value": "some street",
        "valid": true
    },
    "postalCode": {
        "name": "",
        "value": 1234,
        "valid": true
    },
    "city": {
        "name": "",
        "value": "some city",
        "valid": true
    },
    "birthday": {}
}]

现在，即使尝试使用Gson加载上面的字符串，它也会产生错误。Failed to invoke public javafx.beans.property.StringProperty() with no args

装载 机

Person[] persons;

try (Reader reader = new FileReader(file)) {
    persons = gson.fromJson(reader, Person[].class);
}

personData.clear();
personData.addAll(persons);

我已经用谷歌搜索了一下，看看是否可以将getters和setters与Gson一起使用，但这似乎是不可能的，所以我被困在了该怎么做上。