Javafx tableview反射不起作用 [英] Javafx tableview reflection not working

问题描述

我正在尝试使用模拟数据填充JavaFx TableView列，但我不断收到反射错误，即使我认为我正确遵循Bean约定：

I am trying to fill JavaFx TableView Columns with mock data, but I keep getting a reflection error, even though I think I'm following Bean conventions correctly:

// Data model

class SensorTableEntry {
    SensorTableEntry(Integer id, String man, String type, String addr) {
        this.id = new SimpleIntegerProperty(id);
        this.manufacturer = new SimpleStringProperty(man);
        this.type = new SimpleStringProperty(type);
        this.btAddress = new SimpleStringProperty(addr);
    }

    private IntegerProperty id;
    public Integer getId() { return idProperty().get(); }
    public void setId(Integer value) { idProperty().set(value); }
    public IntegerProperty idProperty() { return id; } 

    private StringProperty manufacturer;
    public void setManufacturer(String value) { manufacturerProperty().set(value); }
    public String getManufacturer() { return manufacturerProperty().get(); }
    public StringProperty manufacturerProperty() { return manufacturer; }

    private StringProperty type;
    public void setType(String value) { typeProperty().set(value); }
    public String getType() { return typeProperty().get(); }
    public StringProperty typeProperty() { return type; } 

    private StringProperty btAddress;
    public void setBtAddress(String value) { btAddressProperty().set(value); }
    public String getBtAddress() { return btAddressProperty().get(); }
    public StringProperty btAddressProperty() { return btAddress; } 
}

// More code before this...


// Actual table inside the controller

ObservableList<SensorTableEntry> sensorEntries = FXCollections.observableArrayList(
    new SensorTableEntry(1, "manufacturer", "type", "00:00:00:00:00:00")
);   

TableView<SensorTableEntry> table = new TableView<SensorTableEntry>();

TableColumn<SensorTableEntry,Integer> idCol = new TableColumn<SensorTableEntry,Integer>("ID");
idCol.setCellValueFactory(new PropertyValueFactory<SensorTableEntry,Integer>("id"));

TableColumn<SensorTableEntry,String> manufacturerCol = new TableColumn<SensorTableEntry,String>("Manufacturer");
manufacturerCol.setCellValueFactory(new PropertyValueFactory<SensorTableEntry,String>("manufacturer"));

TableColumn<SensorTableEntry,String> typeCol = new TableColumn<SensorTableEntry,String>("Type");
typeCol.setCellValueFactory(new PropertyValueFactory<SensorTableEntry,String>("type"));

TableColumn<SensorTableEntry,String> btAddressCol = new TableColumn<SensorTableEntry,String>("Bluetooth Address");
btAddressCol.setCellValueFactory(new PropertyValueFactory<SensorTableEntry,String>("btAddress"));

table.setItems(sensorEntries);
table.getColumns().addAll(
    idCol,
    manufacturerCol,
    typeCol,
    btAddressCol
);

pane.getChildren().add(table); 

我已经检查了类似问题的其他答案，如：

I have checked other answers to similar questions like:

Javafx PropertyValueFactory未填充Tableview

JavaFx TableView未填写所有必填栏

Javafx tableview不显示所有列中的数据

但无论我检查多少，我似乎都找不到我的命名出错的地方。我错过了什么吗？

But no matter how much I check I don't seem to find where my naming went wrong. Am I missing something?

我得到的例外是：

异常线程JavaFX Application Threadjava.lang.RuntimeException：java.lang.IllegalAccessException：类sun.reflect.misc.Trampoline无法访问com.Sun.javafx中带有修饰符public
的类SensorTableEntry的成员。 property.PropertyReference.getProperty（PropertyReference.java:200）

Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.IllegalAccessException: Class sun.reflect.misc.Trampoline can not access a member of class SensorTableEntry with modifiers "public" at com.sun.javafx.property.PropertyReference.getProperty(PropertyReference.java:200)

推荐答案

您的属性必须完全因为他们的吸气者和他们的所有者类必须都是公开的。

Your properties must be fully accessible so their getter and their owner class must both be public.

所以只需替换它：

class SensorTableEntry {

有了这个：

public class SensorTableEntry {

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