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我在多個系統配置（Windows 7，Windows 8和Windows 10）上測試我的應用程序（JavaFX Application with embedded JDK 8：8u66 ea-b02）。JavaFX 8：類微調不想實例化
在三臺PC的測試中使用Windows 7 64位，我遇到了一個很奇怪的問題。
我的應用程序在2臺電腦上正常工作，不在第三臺！
在追蹤問題（在第三臺PC上）後，當我嘗試實例化自定義的Spinner類時，應用程序停止運行。
我沒有日誌！應用程序會立即停止並退出。
這是（基於生成器模式）我的類的實例：
和我CustomSpinner類的聲明：
public class CustomSpinner extends javafx.scene.control.Spinner<Integer> {
private static Logger logger = Logger.getLogger(CustomSpinner.class);
public static final int MAX_VALUE = 999999;
private String title; // obligatoire
private int minValue; // obligatoire
private int maxValue; // obligatoire
private int titleWidth; // optionnel
private int width; // optionnel
private LocalTime previousTime;
private LocalTime previousTimeBS;
private LocalTime previousTimeD;
private double height; // optionnel
public CustomSpinner(CustomSpinnerBuilder builder) {
super();
previousTime = null;
previousTimeBS = null;
previousTimeD = null;
title = builder.title;
minValue = builder.minValue;
maxValue = builder.maxValue;
titleWidth = builder.titleWidth;
width = builder.width;
height = builder.height;
this.setMinWidth(width);
this.setMaxWidth(width);
this.setPrefWidth(width);
this.setMinHeight(height);
this.setMaxHeight(height);
this.setPrefHeight(height);
this.setValueFactory(new javafx.scene.control.SpinnerValueFactory.IntegerSpinnerValueFactory(
minValue, maxValue));
this.setEditable(true);
DropShadow ds = new DropShadow();
ds.setOffsetY(3.0);
ds.setOffsetX(3.0);
ds.setColor(Color.GRAY);
this.setEffect(ds);
// filtre numérique
this.addEventFilter(KeyEvent.KEY_TYPED, new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent event) {
if (!(event.getCharacter().charAt(0) >= '0' && event
.getCharacter().charAt(0) <= '9'))
event.consume();
else {
// utilisé pour contourner bug lorsqu'on utilise d'abord les
// arrows + saisie dans zone -> la valeur saisie est doublée
// solution : il faut au moins 1 seconde entre 2 appels de
// handle()
LocalTime currentTime = LocalTime.now();
if (previousTime == null
|| currentTime.toSecondOfDay() != previousTime
.toSecondOfDay()) {
// prise en compte valeur saisie
javafx.scene.control.SpinnerValueFactory<Integer> valueFactory = getValueFactory();
String cpt = valueFactory.getValue().toString()
+ event.getCharacter().charAt(0);
event.consume();
valueFactory.setValue(Integer.parseInt(cpt));
// positionner le curseur à la dernière position de la
// zone
getEditor().positionCaret(
valueFactory.getValue().toString().length());
previousTime = currentTime;
} else
event.consume();
}
}
});
// touches DELETE, BACKSPACE
this.addEventFilter(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent event) {
if (event.getCode() == KeyCode.DELETE) {
LocalTime currentTime = LocalTime.now();
if (previousTimeD != null)
logger.debug("delete = " + currentTime.toSecondOfDay()
+ " " + previousTimeD.toSecondOfDay());
else
logger.debug("delete = " + currentTime.toSecondOfDay());
if (previousTimeD == null
|| currentTime.toSecondOfDay() != previousTimeD
.toSecondOfDay()) {
// supprimer caractère
int pCaret = getEditor().caretPositionProperty()
.intValue();
javafx.scene.control.SpinnerValueFactory<Integer> valueFactory = getValueFactory();
String newCpt = null;
try {
newCpt = valueFactory.getValue().toString()
.substring(0, pCaret)
+ valueFactory.getValue().toString()
.substring(pCaret + 1);
} catch (StringIndexOutOfBoundsException exception) {
newCpt = valueFactory.getValue().toString()
.substring(0, pCaret);
}
if (newCpt.equals(""))
newCpt = minValue + "";
if (Integer.parseInt(newCpt) > maxValue)
newCpt = maxValue + "";
valueFactory.setValue(Integer.parseInt(newCpt));
event.consume();
// positionner le curseur
getEditor().positionCaret(pCaret);
previousTimeD = currentTime;
} else
event.consume();
}
if (event.getCode() == KeyCode.BACK_SPACE) {
LocalTime currentTime = LocalTime.now();
if (previousTimeBS != null)
logger.debug("backspace = "
+ currentTime.toSecondOfDay() + " "
+ previousTimeBS.toSecondOfDay());
else
logger.debug("backspace = "
+ currentTime.toSecondOfDay());
if (previousTimeBS == null
|| currentTime.toSecondOfDay() != previousTimeBS
.toSecondOfDay()) {
// supprimer caractère
int pCaret = getEditor().caretPositionProperty()
.intValue();
if ((pCaret - 1) < 0)
pCaret = 0;
else
pCaret--;
javafx.scene.control.SpinnerValueFactory<Integer> valueFactory = getValueFactory();
String newCpt = valueFactory.getValue().toString()
.substring(0, pCaret)
+ valueFactory
.getValue()
.toString()
.substring(
getEditor()
.caretPositionProperty()
.intValue());
if (newCpt.equals(""))
newCpt = minValue + "";
if (Integer.parseInt(newCpt) > maxValue)
newCpt = maxValue + "";
valueFactory.setValue(Integer.parseInt(newCpt));
event.consume();
// positionner le curseur
getEditor().positionCaret(pCaret);
previousTimeBS = currentTime;
} else
event.consume();
}
}
});
}
public static class CustomSpinnerBuilder {
private String title; // obligatoire
private int minValue = 1; // obligatoire
private int maxValue = MAX_VALUE; // obligatoire
private int titleWidth = 100; // optionnel
private int width = 110; // optionnel
private double height = TextField.USE_PREF_SIZE; // optionnel
public CustomSpinnerBuilder(String title, int minValue, int maxValue) {
this.title = title;
this.minValue = minValue;
this.maxValue = maxValue;
}
public CustomSpinnerBuilder height(double height) {
this.height = height;
return this;
}
public CustomSpinnerBuilder titleWidth(int width) {
this.titleWidth = width;
return this;
}
public CustomSpinnerBuilder width(int width) {
this.width = width;
return this;
}
public CustomSpinner build() {
return new CustomSpinner(this);
}
}
}
這種奇怪的行爲的任何想法？
什麼原因爲什麼類沒有實例化時運行（在我的情況下爲JavaFX應用程序）？
是否可以獲取系統日誌（試圖瞭解問題的根源）？
謝謝您提前
將更新「8u40」添加到JavaFX中。如果您的設備上安裝的JavaFX版本比此舊，則IDE將無法識別JavaFX中的Spinner類。在這種情況下，您需要更新您的JDK。 –
我的JavaFX應用程序中嵌入的JDK是8u66 JDK，所以沒問題！ –
具有嵌入式JDK的優勢在於，它不依賴於設備上安裝的任何JRE –