经过测试是没有问题的
代码
package comtestui;
import javaawtdatatransferDataFlavor;
import javaawtdatatransferUnsupportedFlavorException;
import javaawtdndDnDConstants;
import javaawtdndDropTarget;
import javaawtdndDropTargetDragEvent;
import javaawtdndDropTargetDropEvent;
import javaawtdndDropTargetEvent;
import javaawtdndDropTargetListener;
import javaioFile;
import javaioIOException;
import javautilIterator;
import javautilList;
import javaxswingJTextArea;
public class DragFile extends javaxswingJFrame {
public DragFile() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form
* WARNING: Do NOT modify this code The content of this method is always
* regenerated by the Form Editor
*/
// <editorfold defaultstate=collapsed desc= 生成的代码 >
private void initComponents() {
jScrollPane = new javaxswingJScrollPane();
jTextArea = new MyTextArea();
setDefaultCloseOperation(javaxswingWindowConstantsEXIT_ON_CLOSE);
jTextAreasetColumns();
jTextAreasetRows();
jScrollPanesetViewportView(jTextArea);
getContentPane()add(jScrollPane javaawtBorderLayoutCENTER);
pack();
}// </editorfold>
/**
* @param args
* the command line arguments
*/
public static void main(String args[]) {
javaawtEventQueueinvokeLater(new Runnable() {
public void run() {
new DragFile()setVisible(true);
}
});
}
class MyTextArea extends JTextArea implements DropTargetListener {
public MyTextArea() {
new DropTarget(this DnDConstantsACTION_COPY_OR_MOVE this);
}
public void dragEnter(DropTargetDragEvent dtde) {
}
public void dragOver(DropTargetDragEvent dtde) {
}
public void dropActionChanged(DropTargetDragEvent dtde) {
}
public void dragExit(DropTargetEvent dte) {
}
public void drop(DropTargetDropEvent dtde) {
try {
// Transferable tr = dtdegetTransferable();
if (dtdeisDataFlavorSupported(DataFlavorjavaFileListFlavor)) {
dtdeacceptDrop(DnDConstantsACTION_COPY_OR_MOVE);
List list = (List) (dtdegetTransferable()getTransferData(DataFlavorjavaFileListFlavor));
Iterator iterator = erator();
while (iteratorhasNext()) {
File f = (File) iteratornext();
thisappend(fgetAbsolutePath() + \n);
}
dtdedropComplete(true);
thisupdateUI();
} else {
dtderejectDrop();
}
} catch (IOException ioe) {
ioeprintStackTrace();
} catch (UnsupportedFlavorException ufe) {
ufeprintStackTrace();
}
}
}
// 变量声明 不进行修改
private javaxswingJScrollPane jScrollPane;
private javaxswingJTextArea jTextArea;
// 变量声明结束
}
