将DefaultTableModel数据复制到剪贴板 [英] Copying DefaultTableModel data to clipboard

问题描述

我有下一个JTable

I have the next JTable

private void initComponents() {

    jScrollPane1 = new javax.swing.JScrollPane();
    jTable1 = new javax.swing.JTable();
    jButton1 = new javax.swing.JButton();
    jButton2 = new javax.swing.JButton();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
    getContentPane().setLayout(null);

    jTable1.setModel(new javax.swing.table.DefaultTableModel(
        new Object [][] {
            {"Hat", "New York", "1000"},
            {"T-Shirt", "New York", "3500"},
            {"Sweater", "Washington", "2800"},
            {"Bag", "California", "7000"},
        },
        new String [] {
            "Name", "Warehouse", "Quantity"
        }
    ));
    jScrollPane1.setViewportView(jTable1);

    getContentPane().add(jScrollPane1);
    jScrollPane1.setBounds(19, 11, 375, 170);

    jButton1.setText("Copy");
    getContentPane().add(jButton1);
    jButton1.setBounds(113, 195, 63, 23);

    jButton2.setText("Exit");
    getContentPane().add(jButton2);
    jButton2.setBounds(225, 195, 53, 23);

    pack();
}

我希望按钮将模型的信息复制到剪贴板，但是它没有用，我尝试过使用

I want the button to copy the information of the model to the clipboard, but it is not working, i have tried using

String myString = "This text will be copied into clipboard when running this code!";
StringSelection stringSelection = new StringSelection (myString);
Clipboard clpbrd = Toolkit.getDefaultToolkit ().getSystemClipboard ();
clpbrd.setContents (stringSelection, null);

推荐答案

概念相对简单，实施多一点复杂。

The concept is relatively simple, the implementation a little more complicated.

诀窍是找到各种应用程序将识别的mime类型，并允许您翻译数据。

The trick is to find mime types that the various applications will recognize and allow you to translate your data.

我没有包含CSV转换，从示例代码中获取它不会花费太多时间，而且，我没有包含表格单元格值的任何格式化，我相信你也可以解决这个问题。

I've not included the CSV translation, it wouldn't take much to get that to work from the example code, also, I've not included any "formatting" of the table cell values, I'm sure you can figure that out as well.

import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;

public class CopyTableModel {

    public static void main(String[] args) {
        DefaultTableModel model = new DefaultTableModel(
                new Object[][]{
            {"A1", "A2", "A3", "A4", "A5"},
            {"B1", "B2", "B3", "B4", "B5"},
            {"C1", "C2", "C3", "C4", "C5"},
            {"D1", "D2", "D3", "D4", "D5"},
            {"E1", "E2", "E3", "E4", "E5"},
            {"F1", "F2", "F3", "F4", "F5"}
        },
                new Object[]{"1", "2", "3", "4", "5"});

        Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
        cb.setContents(new TableTransferable(model), new ClipboardOwner() {
            @Override
            public void lostOwnership(Clipboard clipboard, Transferable contents) {
                System.out.println("You lose :(");
            }
        });

    }

    public static class TableTransferable implements Transferable {

        public static final DataFlavor TABLE_DATA_FLAVOR = new DataFlavor(TableModel.class, "binary/x-java-tablemodel; class=<javax.swing.TableModel>");
        public static final DataFlavor HTML_DATA_FLAVOR = new DataFlavor("text/html", "HTML");
        public static final DataFlavor CSV_DATA_FLAVOR = new DataFlavor("text/csv", "CVS");
        public static final DataFlavor PLAIN_DATA_FLAVOR = new DataFlavor("text/plain", "Plain text");
        public static final DataFlavor SERIALIZED_DATA_FLAVOR = new DataFlavor(String.class, "application/x-java-serialized-object; Plain text");
        private final TableModel model;

        public TableTransferable(TableModel model) {
            this.model = model;
        }

        @Override
        public DataFlavor[] getTransferDataFlavors() {
            return new DataFlavor[]{TABLE_DATA_FLAVOR, HTML_DATA_FLAVOR, CSV_DATA_FLAVOR, SERIALIZED_DATA_FLAVOR};
        }

        @Override
        public boolean isDataFlavorSupported(DataFlavor flavor) {
            System.out.println("isSupported " + flavor);
            boolean supported = false;
            for (DataFlavor mine : getTransferDataFlavors()) {
                if (mine.equals(flavor)) {
                    supported = true;
                    break;
                }
            }
            return supported;
        }

        @Override
        public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
            System.out.println("get " + flavor);
            Object data = null;
            if (TABLE_DATA_FLAVOR.equals(flavor)) {
                data = model;
            } else if (HTML_DATA_FLAVOR.equals(flavor)) {
                data = new ByteArrayInputStream(formatAsHTML().getBytes());
            } else if (SERIALIZED_DATA_FLAVOR.equals(flavor)) {
                data = formatAsHTML();
            } else if (CSV_DATA_FLAVOR.equals(flavor)) {
                data = new ByteArrayInputStream("CSV".getBytes());
            } else {
                throw new UnsupportedFlavorException(flavor);
            }
            return data;
        }

        public String formatAsHTML() {
            StringBuilder sb = new StringBuilder(128);
            sb.append("<html><body>");
            sb.append("<table>");
            sb.append("<tr>");
            for (int index = 0; index < model.getColumnCount(); index++) {
                sb.append("<th>").append(model.getColumnName(index)).append("</th>");
            }
            sb.append("</tr>");
            for (int rowIndex = 0; rowIndex < model.getRowCount(); rowIndex++) {
                sb.append("<tr>");
                for (int colIndex = 0; colIndex < model.getColumnCount(); colIndex++) {
                    Object o = model.getValueAt(rowIndex, colIndex);
                    // You will want to format the value...
                    String value = o == null ? "" : o.toString();
                    sb.append("<td>").append(value).append("</td>");
                }
                sb.append("</tr>");
            }
            sb.append("</table>");

            return sb.toString();
        }
    }
}

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