我开始在JavaFx中开发，我有一个项目，我想知道是否可以在javaFx中对表进行“复制粘贴”。我的意思是，我有一个带有一些数据的TableView，只想将它保存在剪贴板中以将其导出到Microsoft word或任何其他文本编辑器。这可能吗？我怎么能这样做？感谢
答案 0 :(得分：1)
以下是有关如何使用TableView进行复制/粘贴的示例。您必须根据您的属性类型扩展该类。复制/粘贴到和。 G。 Excel保留表结构，因为它支持在代码中使用的Ascii空格（\ n，\ t）。
改进的解决方案是使用混合剪贴板内容，以便将ClipboardContent也构造为html。然后你将在Word等程序中获得表结构。
TableCopyPasteCellsDemo.java
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.StringTokenizer;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.IntegerProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ObservableValue;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TablePosition;
import javafx.scene.control.TableView;
import javafx.scene.input.Clipboard;
import javafx.scene.input.ClipboardContent;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyCodeCombination;
import javafx.scene.input.KeyCombination;
import javafx.scene.input.KeyEvent;
public class TableUtils {
private static NumberFormat numberFormatter = NumberFormat.getNumberInstance();
/**
* Install the keyboard handler:
* + CTRL + C = copy to clipboard
* + CTRL + V = paste to clipboard
* @param table
*/
public static void installCopyPasteHandler(TableView<?> table) {
// install copy/paste keyboard handler
table.setOnKeyPressed(new TableKeyEventHandler());
}
/**
* Copy/Paste keyboard event handler.
* The handler uses the keyEvent's source for the clipboard data. The source must be of type TableView.
*/
public static class TableKeyEventHandler implements EventHandler<KeyEvent> {
KeyCodeCombination copyKeyCodeCompination = new KeyCodeCombination(KeyCode.C, KeyCombination.CONTROL_ANY);
KeyCodeCombination pasteKeyCodeCompination = new KeyCodeCombination(KeyCode.V, KeyCombination.CONTROL_ANY);
public void handle(final KeyEvent keyEvent) {
if (copyKeyCodeCompination.match(keyEvent)) {
if( keyEvent.getSource() instanceof TableView) {
// copy to clipboard
copySelectionToClipboard( (TableView<?>) keyEvent.getSource());
// event is handled, consume it
keyEvent.consume();
}
}
else if (pasteKeyCodeCompination.match(keyEvent)) {
if( keyEvent.getSource() instanceof TableView) {
// copy to clipboard
pasteFromClipboard( (TableView<?>) keyEvent.getSource());
// event is handled, consume it
keyEvent.consume();
}
}
}
}
/**
* Get table selection and copy it to the clipboard.
* @param table
*/
public static void copySelectionToClipboard(TableView<?> table) {
StringBuilder plainBuffer = new StringBuilder();
StringBuilder htmlBuffer = new StringBuilder();
ObservableList<TablePosition> positionList = table.getSelectionModel().getSelectedCells();
int prevRow = -1;
htmlBuffer.append( "<html>\n<body>\n<table>\n");
htmlBuffer.append( " <tr>\n");
for (TablePosition position : positionList) {
int viewRow = position.getRow();
int viewCol = position.getColumn();
// determine whether we advance in a row (tab) or a column
// (newline).
if (prevRow == viewRow) {
plainBuffer.append('\t');
} else if (prevRow != -1) {
plainBuffer.append('\n');
htmlBuffer.append( " </tr>\n <tr>\n");
}
// create string from cell
String text = "";
Object observableValue = (Object) table.getVisibleLeafColumn(viewCol).getCellObservableValue( viewRow); // table position gives the view index => we need to operate on the view columns
// null-check: provide empty string for nulls
if (observableValue == null) {
text = "";
}
else if( observableValue instanceof DoubleProperty) { // TODO: handle boolean etc
text = numberFormatter.format( ((DoubleProperty) observableValue).get());
}
else if( observableValue instanceof IntegerProperty) {
text = numberFormatter.format( ((IntegerProperty) observableValue).get());
}
else if( observableValue instanceof StringProperty) {
text = ((StringProperty) observableValue).get();
}
else {
System.out.println("Unsupported observable value: " + observableValue);
}
// add new item to clipboard
plainBuffer.append(text);
htmlBuffer.append( " <td>" + text + "</td>\n");
// remember previous
prevRow = viewRow;
}
htmlBuffer.append( " </tr>\n");
htmlBuffer.append( "</table>\n</body>\n</html>");
// create clipboard content
final ClipboardContent clipboardContent = new ClipboardContent();
clipboardContent.putString(plainBuffer.toString());
clipboardContent.putHtml(htmlBuffer.toString());
System.out.println("ascii:\n" + plainBuffer.toString() + "\n\nhtml:\n" + htmlBuffer.toString());
// set clipboard content
Clipboard.getSystemClipboard().setContent(clipboardContent);
}
public static void pasteFromClipboard( TableView<?> table) {
// abort if there's not cell selected to start with
if( table.getSelectionModel().getSelectedCells().size() == 0) {
return;
}
// get the cell position to start with
TablePosition pasteCellPosition = table.getSelectionModel().getSelectedCells().get(0);
System.out.println("Pasting into cell " + pasteCellPosition);
String pasteString = Clipboard.getSystemClipboard().getString();
System.out.println(pasteString);
int rowClipboard = -1;
StringTokenizer rowTokenizer = new StringTokenizer( pasteString, "\n");
while( rowTokenizer.hasMoreTokens()) {
rowClipboard++;
String rowString = rowTokenizer.nextToken();
StringTokenizer columnTokenizer = new StringTokenizer( rowString, "\t");
int colClipboard = -1;
while( columnTokenizer.hasMoreTokens()) {
colClipboard++;
// get next cell data from clipboard
String clipboardCellContent = columnTokenizer.nextToken();
// calculate the position in the table cell
int rowTable = pasteCellPosition.getRow() + rowClipboard;
int colTable = pasteCellPosition.getColumn() + colClipboard;
// skip if we reached the end of the table
if( rowTable >= table.getItems().size()) {
continue;
}
if( colTable >= table.getColumns().size()) {
continue;
}
// System.out.println( rowClipboard + "/" + colClipboard + ": " + cell);
// get cell
TableColumn tableColumn = table.getVisibleLeafColumn(colTable); // table position gives the view index => we need to operate on the view columns
ObservableValue observableValue = tableColumn.getCellObservableValue(rowTable);
System.out.println( rowTable + "/" + colTable + ": " +observableValue);
// TODO: handle boolean, etc
if( observableValue instanceof DoubleProperty) {
try {
double value = numberFormatter.parse(clipboardCellContent).doubleValue();
((DoubleProperty) observableValue).set(value);
} catch (ParseException e) {
e.printStackTrace();
}
}
else if( observableValue instanceof IntegerProperty) {
try {
int value = NumberFormat.getInstance().parse(clipboardCellContent).intValue();
((IntegerProperty) observableValue).set(value);
} catch (ParseException e) {
e.printStackTrace();
}
}
else if( observableValue instanceof StringProperty) {
((StringProperty) observableValue).set(clipboardCellContent);
} else {
System.out.println("Unsupported observable value: " + observableValue);
}
System.out.println(rowTable + "/" + colTable);
}
}
}
}
TableUtils.java
Experiment: landing v19 Goal:view-wheels
ALTERNATIVE NAME PARTICIPANTS NON-FINISHED COMPLETED CONVERSION RATE
A 70 40 30 42.86%
B 70 27 43 61.43% +43.33%
答案 1 :(得分：0)
从表数据中获取您想要的文本，格式正确：然后您可以
ClipboardContent content = new ClipboardContent();
content.putString(tableData);
Clipboard.getSystemClipboard().setContent(content);