Question

我想逐行在jtable中的同一单元格中插入多个字符串。这是我将数据添加到jtable中的方式

       String Model,Brand,Serial;

       String itemdetails=Model+Brand+Serial

       model.addRow(new Object[]{itemdetails,amountText.getText()});

这里的问题是，将输出单行输出，但我想在jtbale的单元格中输出这样的输出。

      Model                    //it is string coming from database
      Brand                      //it is string coming from database
      Serial                   //it is string coming from database

我已经尝试了这个，但它只使用双引号内的数据，而不是字符串。

                  "<html>lineOne <br/> lineTwo </html>"

Answer 1

所以，没有做任何特别的事情，我可以让<html>...<br>...</html>正常工作......

Multilines

import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.DefaultTableModel;

public class Test {

    public static void main(String[] args) {
        new Test();
    }

    public Test() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        public TestPane() {
            DefaultTableModel model = new DefaultTableModel(0, 1);
            model.addRow(new String[]{
                "<html>My teacher took my iPod.<br>She said they had a rule;<br>I couldn't bring it into class<br>or even to the school.</html>"
            });
            model.addRow(new String[]{
                "<html>She said she would return it;<br>I'd have it back that day.<br>But then she tried my headphones on<br>and gave a click on Play.</html>"
            });
            model.addRow(new String[]{
                "<html>She looked a little startled,<br>"
                + "but after just a while<br>"
                + "she made sure we were occupied<br>"
                + "and cracked a wicked smile.<br>"
            });
            model.addRow(new String[]{
                "<html>Her body started swaying.<br>"
                + "Her toes began to tap.<br>"
                + "She started grooving in her seat<br>"
                + "and rocking to the rap.</html>"
            });
            model.addRow(new String[]{
                "<html>My teacher said she changed her mind.<br>"
                + "She thinks it's now okay<br>"
                + "to bring my iPod into class.<br>"
                + "She takes it every day.</html>"
            });

            setLayout(new GridBagLayout());

            JTable table = new JTable(model);
            table.setRowHeight(75);
            add(new JScrollPane(table));

        }

    }

}

也许您的代码中还有其他内容，您没有向我们展示，这导致了问题......

更新了“动态”示例

这已超过原始问题，但是TableModel表示它支持的数据，它为JTable提供了显示它的结构。

因此，给定一堆“断开连接”的值，TableModel将根据您的要求将它们“缝合”在一起。

以下示例simple将上一首诗的每一行拆分成一个数组，每行代表一个元素。

然后再将它包裹起来，这样诗的每一部分都是一系列的行......

String data[][] = {
            {"My teacher took my iPod.", "She said they had a rule;", "I couldn't bring it into class", "or even to the school."},
            {"She said she would return it;", "I'd have it back that day.", "But then she tried my headphones on", "and gave a click on Play."}, 
            etc...

然后该示例使用自定义TableModel，当询问单元格的值时，取自给定的“section”并从每行构建String，包装成{{1}基于<html>。

此外，您需要单击“添加”按钮以添加每个新行，然后才能显示

Dynamic data

String

请查看How to Use Tables了解详情

Answer 2

您的for循环未正确关闭：

    DefaultTableModel model = (DefaultTableModel) jt.getModel();
    int i; 
    for(i=0; i<model.getRowCount(); i++){ 
    String itemdetails=model+"\n"+brand; 
    System.out.println(itemdetails);
    jt.setRowHeight(30);
    model.addRow(new Object[]{i+1,itemdetails,amountText.getText()}); }

Java-Swing在jtable的单元格中添加多行

2 个答案: