Java:水平滚动时 JTable 列不适合 JScrollPane

标签 java swing jtable jscrollpane horizontal-scrolling

我在 JScrollPane 中有 JTable，但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 (Sorry cannot post images, 10 reputation required :P)

正如您从图片中看到的那样，行有点在列上运行，并且最后两行丢失了。

我还没有以编程方式编写任何东西，一切都是使用 Netbeans IDE 设计构建器完成的。

附注有趣的是，如果我展开程序或进入全屏，程序会显示必须存在的所有列。但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。

如果我错过了任何内容(抱歉第一次在这里发帖)请询问。感谢您的帮助!

这里是 Netbeans 中有关主 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                   
}

最佳答案

您可以滚动或让所有列适合(如果有很多则挤压)可见，无需滚动条。 该行为由 autoResizeMode 属性控制。显示滚动条:

table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

要显示所有列，每列的多余宽度都相同:

table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);

后者是默认值(模netbeans的干扰，对那部分一无所知)。

编辑

此特定上下文中的错误似乎是在表及其封闭的滚动 Pane 上调用 setPreferredSize ，且大小不兼容。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:您 shouldn't use setXXSize 的另一个原因在一个组件上，永远。这里的出路是实现表的 getPreferredScrollableViewportSize (这是其 Scrollable 角色的一部分)以返回一些合理的列/行大小。

关于Java:水平滚动时 JTable 列不适合 JScrollPane，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15459680/

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