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JavaFX 是一个用于构建富 Internet 应用程序的 Java 库。使用该库编写的应用程序可以在多个平台上一致运行。使用 JavaFX 开发的应用程序可以在各种设备上运行，例如台式机、手机、电视、平板电脑等。
1.获取节点位置
这取决于您所说的绝对"是什么意思.节点有一个坐标系，其父级有一个坐标系，父级有一个坐标系，依此类推，最终有一个用于 Scene 的坐标系和一个用于屏幕的坐标系(这可能是一个物理显示设备的集合).
你可能想要相对于 Scene 的坐标，在这种情况下你可以做
Bounds boundsInScene = node.localToScene(node.getBoundsInLocal());
或相对于屏幕的坐标:
Bounds boundsInScreen = node.localToScreen(node.getBoundsInLocal());
无论哪种情况，结果都是 Bounds 对象有 getMinX(), getMinY(), getMaxX(), getMaxY()code>、getWidth() 和 getHeight() 方法.
2.ListView监听
// 待岗容器列表
ObservableList<Node> oriList = FXCollections.observableArrayList();
// listview设置数据
oriBox.setItems(oriList);
// 监听listview点击
private void listViewClick(ListView box, ObservableList<Node> list) {
box.setOnMouseClicked(new EventHandler<MouseEvent>() {
@Override
public void handle(final MouseEvent mouseEvent) {
node = (Pane) list.get(box.getSelectionModel().getSelectedIndex());
Map params = (Map) node.getProperties().get("params");
String name = (String) params.get("name");
paneNode = generateRectangleNode(name);
root.getChildren().add(paneNode);
// 获取节点的位置
Bounds boundsInScene = node.localToScene(node.getBoundsInLocal());
paneNode.relocate(mouseEvent.getX()+boundsInScene.getMinX(), mouseEvent.getY()+boundsInScene.getMinY());
box.getSelectionModel().clearSelection();
}
});
}
3.键盘监听事件获取焦点
// 键盘事件
private void initKeyPress() {
settingDialog.setOnDialogOpened(event -> {
settingDialog.requestFocus();
});
settingDialog.setOnKeyPressed(new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent event) {
switch (event.getCode()) {
case F3:
System.out.println("保存");
break;
case F4:
closeDialog();
break;
case F5:
System.out.println("同步");
break;
case F6:
System.out.println("应用");
break;
}
}
});
}
4.让组件隐藏且不占用空间
pwdStrengthPane.setVisible(false);
// 设置其托管状态
pwdStrengthPane.setManaged(false);
5.进度条动态变化
public void init(Stage stage) {
Timeline task = new Timeline(
new KeyFrame(
Duration.ZERO,
new KeyValue(initProgress.progressProperty(), 0)),
new KeyFrame(
Duration.seconds(2),
new KeyValue(initProgress.progressProperty(), 1)));
task.setCycleCount(Timeline.INDEFINITE);
task.play();
}
6.动态双向绑定数据
// model
package com.xmcares.scims.desktop.gui.models.cert;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
public class CertModel {
private final StringProperty dpsrCardName=new SimpleStringProperty("");
public StringProperty dpsrCardNameProperty() {
return dpsrCardName ;
}
public final void setDpsrCardName(String text) {
dpsrCardNameProperty().set(text);
}
public final String getDpsrCardName() {
return dpsrCardNameProperty().get();
}
}
// set
certmodel.setDpsrCardName((String) params.get("dpsrCardName"));
// bindData监听数据变化
certModel.dpsrCardNameProperty().addListener(((observable, oldValue, newValue) -> {
dpsrCardName.setText(newValue);
openDialog();
}));
7.全局注册数据 （如cookie）
// 设置data
ApplicationContext.getInstance().register("departurePassenger", departurePassenger);
// 全局获取data
JSONObject departurePassenger = (JSONObject) ApplicationContext.getInstance().getRegisteredObject("departurePassenger");
8.键盘大小写和中文限制
// 大写锁定和限制输入中文
usernameField.setTextFormatter(new TextFormatter<>((change) -> {
change.setText(change.getText().toUpperCase().replaceAll("[\u4e00-\u9fa5]+",""));
return change;
}));
9.combox修改列表背景和文字颜色
.jfx-combo-box .list-cell:hover {
-fx-background-color: rgb(245,245,245);
-fx-text-fill: #000;
}
10.combox如何实现过滤查询
/**
* @Description combox 过滤
* @Author lius
* @Date 2022/10/24 10:37
*/
package com.xmcares.scims.desktop.gui.components.comboBox;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.scene.control.ComboBox;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
public class AutoCompleteComboBoxListener<T> implements EventHandler<KeyEvent> {
private ComboBox<T> comboBox;
private ObservableList<T> data;
private boolean moveCaretToPos = false;
private int caretPos;
public AutoCompleteComboBoxListener(final ComboBox<T> comboBox) {
this.comboBox = comboBox;
data = comboBox.getItems();
this.comboBox.setEditable(true);
this.comboBox.setOnKeyReleased((EventHandler<? super KeyEvent>) AutoCompleteComboBoxListener.this);
}
@Override
public void handle(KeyEvent event) {
if (event.getCode() == KeyCode.UP) {
caretPos = -1;
moveCaret(comboBox.getEditor().getText().length());
return;
} else if (event.getCode() == KeyCode.DOWN) {
if (!comboBox.isShowing())
comboBox.show();
caretPos = -1;
moveCaret(comboBox.getEditor().getText().length());
return;
}
if (event.getCode() == KeyCode.RIGHT || event.getCode() == KeyCode.LEFT
|| event.isControlDown() || event.getCode() == KeyCode.HOME
|| event.getCode() == KeyCode.END || event.getCode() == KeyCode.TAB) {
return;
}
comboBox.hide();
if (event.getCode() == KeyCode.BACK_SPACE) {
moveCaretToPos = true;
caretPos = comboBox.getEditor().getCaretPosition();
} else if (event.getCode() == KeyCode.DELETE) {
moveCaretToPos = true;
caretPos = comboBox.getEditor().getCaretPosition();
}
ObservableList<T> list = FXCollections.observableArrayList();
for (int i = 0; i < data.size(); i++) {
if (data.get(i) != null&&data.get(i).toString().toLowerCase().startsWith(
AutoCompleteComboBoxListener.this.comboBox
.getEditor().getText().toLowerCase())) {
list.add(data.get(i));
}
}
String t = comboBox.getEditor().getText();
comboBox.setItems(list);
comboBox.getEditor().setText(t);
if (!moveCaretToPos) {
caretPos = -1;
}
moveCaret(t.length());
if (!list.isEmpty()) {
comboBox.show();
}
}
private void moveCaret(int textLength) {
if (caretPos == -1)
comboBox.getEditor().positionCaret(textLength);
else
comboBox.getEditor().positionCaret(caretPos);
moveCaretToPos = false;
}
}
public class JavaFXApplication1 extends Application {
@Override
public void start(Stage primaryStage) {
ComboBox<String> combo = new ComboBox<>();
ObservableList<String> list = FXCollections.observableArrayList();
list.add("A");
list.add("AND");
list.add("ANDR");
list.add("ANDRE");
list.add("B");
list.add("BP");
list.add("BPO");
combo.setItems(list);
new AutoCompleteComboBoxListener(combo);
StackPane root = new StackPane();
root.getChildren().add(combo);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
11.高度撑满使hbox定位到stackpane底部解决办法
HBox changeBox = new HBox();
changeBox.setMaxHeight(Region.USE_PREF_SIZE);
changeBox.setMaxWidth(Region.USE_PREF_SIZE);
setMargin(changeBox, new Insets(20));
stackPane.setAlignment(changeBox, Pos.BOTTOM_CENTER);
12.跳转浏览器（解决ie浏览器拼接参数丢失问题）
String deviceId = "";
String staffCardId = "";
URI uri = URI.create(MainService.SCIMS_SERVER_URL + MainService.SCIMS_COURTESY + "&staffCardId=" + staffCardId + "&deviceId=" + deviceId);
/*下面这样处理是为了避免在打开IE浏览器的时候带&号后面的参数被截掉的问题*/
String url = uri.toString().replaceAll(""", "'");
url = """ + url + """;
try {
browse(url);
} catch (IOException e) {
e.printStackTrace();
}
public static void browse(String url) throws Exception {
// 获取操作系统的名字
String osName = System.getProperty("os.name", "");
if (osName.startsWith("Mac OS")) {
// 苹果的打开方式
Class fileMgr = Class.forName("com.apple.eio.FileManager");
Method openURL = fileMgr.getDeclaredMethod("openURL", new Class[]{String.class});
openURL.invoke(null, new Object[]{url});
} else if (osName.startsWith("Windows")) {
// windows的打开方式。
//打开IE浏览器
Runtime.getRuntime().exec("cmd /c start iexplore " + url);
} else {
// Unix or Linux的打开方式
String[] browsers = {"firefox", "opera", "konqueror", "epiphany",
"mozilla", "netscape"};
String browser = null;
for (int count = 0; count < browsers.length && browser == null; count++) {
// 执行代码，在brower有值后跳出，
// 这里是如果进程创建成功了，==0是表示正常结束。
if (Runtime.getRuntime()
.exec(new String[]{"which", browsers[count]})
.waitFor() == 0)
browser = browsers[count];
if (browser == null)
throw new Exception("Could not find web browser");
else
// 这个值在上面已经成功的得到了一个进程。
Runtime.getRuntime().exec(new String[]{browser, url});
}
}
}
13.设置新的stage关闭后才能操作其他行为
stage.initModality(Modality.APPLICATION_MODAL);
14.设置stage自适应窗口大小
stage.sizeToScene();
15.表格数据导出excel
说明：guestTable为tableview的id;
/*下载文件*/
public void download() throws IOException {
Workbook workbook = new HSSFWorkbook();
Sheet spreadsheet = workbook.createSheet("FlightBoardingInfo");
Row row = spreadsheet.createRow(0);
for (int j = 0; j < guestTable.getColumns().size(); j++) {
row.createCell(j).setCellValue(guestTable.getColumns().get(j).getText());
}
for (int i = 0; i < guestTable.getItems().size(); i++) {
row = spreadsheet.createRow(i + 1);
for (int j = 0; j < guestTable.getColumns().size(); j++) {
if (guestTable.getColumns().get(j).getCellData(i) != null) {
row.createCell(j).setCellValue(guestTable.getColumns().get(j).getCellData(i).toString());
} else {
row.createCell(j).setCellValue("");
}
}
}
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("导出");
fileChooser.getExtensionFilters().addAll(new FileChooser.ExtensionFilter("XLS", "*.xls"),
new FileChooser.ExtensionFilter("Allfiles", "*.*"));
File desktopDir = FileSystemView.getFileSystemView().getHomeDirectory();
String currentDesktopPath = desktopDir.getAbsolutePath();
fileChooser.setInitialDirectory(new File(currentDesktopPath));
fileChooser.setInitialFileName("demo.xls");
File file = fileChooser.showSaveDialog(this.getScene().getWindow());
if (file != null) {
try {
FileOutputStream fileOut = new FileOutputStream(file.getAbsolutePath());
workbook.write(fileOut);
fileOut.close();
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
16.Javafx JFXComboBox字体样式重置
/*重置下拉框下拉内容样式*/
.jfx-combo-box .list-view .list-cell {
-fx-text-fill: #000;
}
/*重置下拉框下拉内容悬浮样式*/
.jfx-combo-box .list-cell:hover {
-fx-background-color: #ccc;
-fx-text-fill: #000;
}
/*注意：很久没试成功，发现这样可以，重置下拉框文本样式*/
.jfx-combo-box .cell {
-fx-text-fill: white;
}
17.JNativeHook全局键盘的使用技巧
1.1 版本2.2.0-2.2.2打包没法运行问题
解决办法：
（1）换低2.1.0版本便可以解决，但是会有个问题，鼠标日志一直打印，禁用方法：
private void initGlobalClick() {
try {
GlobalScreen.registerNativeHook();
} catch (NativeHookException ex) {
System.exit(1);
}
GlobalMouseListener globalMouseListener = new GlobalMouseListener(this);
GlobalScreen.addNativeMouseListener(globalMouseListener);
// logger日志禁用
Logger logger = Logger.getLogger(GlobalScreen.class.getPackage().getName());
LogManager.getLogManager().reset();
logger.setLevel(Level.OFF);
logger.setUseParentHandlers(false);
}
18.stage关闭后websocket可以重新激活打开
1.第一种方式
// 防止点击关闭后不能在打开
Platform.setImplicitExit(false);
2.第二种方式
ownStage.setOnCloseRequest(e -> {
Platform.exit();
System.exit(0);
});
查阅文档
比较全的文档： www.jc2182.com/javafx/java…
拖拽文档：www.leestorm.com/post/95.htm…
其他：
