Java的swing界面拖拽文件至文本框显示文件路径

来源：互联网发布：口红与经济数据表格编辑：程序博客网时间：2024/05/18 20:46

import java.awt.datatransfer.DataFlavor;import java.awt.datatransfer.Transferable;import javax.swing.JComponent;import javax.swing.JFrame;import javax.swing.JTextField;import javax.swing.TransferHandler;/** * 拖拽文件至文本框显示文件路径 */public class CopyPathToTextField extends JFrame{    private static final long serialVersionUID = 1L;    private JTextField field;    public CopyPathToTextField(){                this.setTitle("拖拽文件至文本框显示文件路径");        this.setSize(500, 300);        this.setLocationRelativeTo(null);        this.setLayout(null);        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);                field = new JTextField();        field.setBounds(50, 50, 300, 30);                field.setTransferHandler(new TransferHandler()        {            private static final long serialVersionUID = 1L;            @Override            public boolean importData(JComponent comp, Transferable t) {                try {                    Object o = t.getTransferData(DataFlavor.javaFileListFlavor);                    String filepath = o.toString();                    if (filepath.startsWith("[")) {                        filepath = filepath.substring(1);                    }                    if (filepath.endsWith("]")) {                        filepath = filepath.substring(0, filepath.length() - 1);                    }                    System.out.println(filepath);                    field.setText(filepath);                    return true;                }                catch (Exception e) {                    e.printStackTrace();                }                return false;            }            @Override            public boolean canImport(JComponent comp, DataFlavor[] flavors) {                for (int i = 0; i < flavors.length; i++) {                    if (DataFlavor.javaFileListFlavor.equals(flavors[i])) {                        return true;                    }                }                return false;            }        });                this.add(field);        this.setVisible(true);    }        public static void main(String[] args) {        new CopyPathToTextField();    }}

运行效果如下图显示：

可以拖拽文件，也可以复制文件粘贴进去，显示的都是该文件的路径。

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