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我在 JScrollPane 中有 JTable，我正在努力解决这个问题，即水平滚动时 JTable 不适合 JScrollPane。我在 JTable 中有 18 行，但水平滚动时只显示 16 行。这就是我的意思

http://imgur.com/BfD7sKA （抱歉无法发布图片，需要 10 名声望：P）

因此，从图片中可以看出，行有点在列上运行，最后 2 行丢失了。

我还没有以编程方式编写任何代码，一切都是使用 Netbeans IDE Design builder 完成的。

PS你有趣的事实，如果我扩展我的程序或进入全屏，程序会显示必须存在的所有列。但是如果我再次缩小程序并尝试使用水平滚动，就会发生这种情况。

如果我错过了任何东西（抱歉第一次在这里发帖），请问。谢谢您的帮助！

所以这是 Netbeans 关于主 UI 窗口的代码

package View;

import static javax.swing.JFrame.EXIT_ON_CLOSE;
import base.*;
import java.awt.Dimension;

/**
 *
 * @author Nikki
 */
public class V_main extends javax.swing.JFrame {

    /**
     * Creates new form V_main
     */
    public V_main() {
        initComponents();
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setLocationRelativeTo(null);

        Dimension d = account_table.getPreferredSize();
            jScrollPane1.setPreferredSize(
        new Dimension(d.width,account_table.getRowHeight()*18+1));
    }

    /**
     * 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.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        picture_label = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        account_table = new javax.swing.JTable();
        exit_button = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("BASe (Basic Accounting System)");

        picture_label.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Images/fazer_logo.png"))); // NOI18N

        jButton1.setText("Add New Customer");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setText("Remove Customer");

        jButton3.setText("Edit Customer Information");

        jScrollPane1.setHorizontalScrollBarPolicy(javax.swing.ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
        jScrollPane1.setAutoscrolls(true);
        jScrollPane1.setPreferredSize(new java.awt.Dimension(1500, 1000));

        account_table.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {"Nikki", "Kononov", null, "", "", "none", "nikki@gmail.com", null, "none", null, null, null, null, null, null, null},
                {"Nikki", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {"Nikki", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null},
                {null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}
            },
            new String [] {
                "Company", "Person", "Title ", "Street Address", "Zip Code", "City", "Area", "Country", "Website", "Email", "Telephone", "Fax", "Mobile", "Employees", "Turnover", "Result"
            }
        ) {
            Class[] types = new Class [] {
                java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.Integer.class, java.lang.Integer.class, java.lang.Integer.class
            };

            public Class getColumnClass(int columnIndex) {
                return types [columnIndex];
            }
        });
        account_table.setAutoResizeMode(javax.swing.JTable.AUTO_RESIZE_OFF);
        account_table.setCellSelectionEnabled(true);
        account_table.setFillsViewportHeight(true);
        account_table.setPreferredSize(new java.awt.Dimension(1300, 1000));
        jScrollPane1.setViewportView(account_table);
        account_table.getColumnModel().getSelectionModel().setSelectionMode(javax.swing.ListSelectionModel.SINGLE_INTERVAL_SELECTION);

        exit_button.setText("Exit");
        exit_button.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                exit_buttonActionPerformed(evt);
            }
        });

        jButton4.setText("Search for Customers");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 938, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(layout.createSequentialGroup()
                            .addGap(27, 27, 27)
                            .addComponent(picture_label))
                        .addGroup(layout.createSequentialGroup()
                            .addGap(18, 18, 18)
                            .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 159, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addComponent(jButton3)))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addComponent(exit_button, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(jButton2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 159, Short.MAX_VALUE)
                            .addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(picture_label)
                        .addGap(13, 13, 13)
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(exit_button, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 533, Short.MAX_VALUE)))
                .addContainerGap())
        );

        pack();
    }// </editor-fold>                        

    private void exit_buttonActionPerformed(java.awt.event.ActionEvent evt) {                                            
        super.dispose();
    }                                           

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        BASe.showAdd();
    }                                        

    /**
     * @param args the command line arguments
     */
    // Variables declaration - do not modify                     
    private javax.swing.JTable account_table;
    private javax.swing.JButton exit_button;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JLabel picture_label;
    // End of variables declaration                   
}
4

2 回答 2

1

您可以滚动或让所有列适合（如果有很多则被挤压）在没有滚动条的情况下可见。该行为由 autoResizeMode 属性控制。要显示滚动条：

table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

要显示所有列，每个列都有相同的多余宽度：

table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);

后者是默认设置（模 netbeans 的干扰，对该部分一无所知）。

编辑

此特定上下文中的错误似乎是在表及其封闭的 scrollPane 上调用 setPreferredSize ，但大小不兼容。当实际大小大于表的硬编码首选项时，结果是未确定的行为。

底线：永远不要在组件上使用 setXXSize的另一个原因。这里的出路是实现表的 getPreferredScrollableViewportSize （这是它的 Scrollable 角色的一部分）以在列/行大小方面返回合理的值。

于 2013-03-17T11:04:58.170 回答
0

把表头的宽度设置大一点，比如10000，就可以解决问题了！下面的示例代码： Tablename.getTableHeader().setPreferredSize(new Dimension(10000,30));

于 2020-03-13T13:33:15.690 回答