我有个问题。在 JScrollPane 中，我使用 JPanel 的继承者作为 viewPort。继承者可以包含标签、单选按钮、复选框和其他元素（取决于实现）。在 JScrollPane 中设置 HORIZONTAL_SCROLLBAR_NEVER。 JPanel 的继承者中的内容需要在垂直和水平方向上自动换行。当在标签中显示长文本时（特别是在 html 标签中），尽管 HORIZONTAL_SCROLLBAR_NEVER，但没有自动换行。如果不使用JScrollPane（JPanel的继承者有具体的大小）的话要进行换行，但是我需要垂直滚动。
尝试设置监听器来调整 JScrollPane 的大小并为内部 JPanel 设置必要的大小。不工作。设置侦听器以调整内部 JPanel 的大小。设置宽度后，又发生了另一次更改（显然非常重要）。
我怎么解决这个问题？需要在垂直和水平自动换行中滚动。提前致谢。对不起我的英语不好）。
示例（不好，之后更好）
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ScrollPaneConstants;
import javax.swing.border.EmptyBorder;
public class Test extends JFrame
{
private JPanel contentPane;
/**
* Launch the application.
*/
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
try
{
Test frame = new Test();
JScrollPane scrollPane = new JScrollPane();
scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
JPanel panel = new JPanel();
panel.add(new JLabel("<html>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</html>"));
scrollPane.setViewportView(panel);
frame.add(scrollPane);
frame.setVisible(true);
}
catch (Exception e)
{
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Test()
{
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
}
}
好例子
屏幕链接：http://s44.radikal.ru/i104/1204/4d/72ea56d685ee.png http://s44.radikal.ru/i104/1204/4d/72ea56d685ee.png
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.ScrollPaneConstants;
import javax.swing.border.EmptyBorder;
import javax.swing.JScrollPane;
public class Test extends JFrame
{
private JPanel contentPane;
/**
* Launch the application.
*/
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
try
{
Test frame = new Test();
frame.setVisible(true);
}
catch (Exception e)
{
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Test()
{
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
GridBagLayout gbl_contentPane = new GridBagLayout();
gbl_contentPane.columnWidths = new int[] { 0, 0 };
gbl_contentPane.rowHeights = new int[] { 0, 0 };
gbl_contentPane.columnWeights = new double[] { 1.0, Double.MIN_VALUE };
gbl_contentPane.rowWeights = new double[] { 1.0, Double.MIN_VALUE };
contentPane.setLayout(gbl_contentPane);
JScrollPane scrollPane = new JScrollPane();
GridBagConstraints gbc_scrollPane = new GridBagConstraints();
gbc_scrollPane.fill = GridBagConstraints.BOTH;
gbc_scrollPane.gridx = 0;
gbc_scrollPane.gridy = 0;
contentPane.add(scrollPane, gbc_scrollPane);
JPanel panel = new JPanel();
scrollPane.setViewportView(panel);
scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
GridBagLayout gbl_panel = new GridBagLayout();
gbl_panel.columnWidths = new int[]{0, 0};
gbl_panel.rowHeights = new int[]{0, 0};
gbl_panel.columnWeights = new double[]{0.0, Double.MIN_VALUE};
gbl_panel.rowWeights = new double[]{0.0, Double.MIN_VALUE};
panel.setLayout(gbl_panel);
JLabel lblNewLabel = new JLabel("<html>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</html>");
GridBagConstraints gbc_lblNewLabel = new GridBagConstraints();
gbc_lblNewLabel.gridx = 0;
gbc_lblNewLabel.gridy = 0;
panel.add(lblNewLabel, gbc_lblNewLabel);
}
}
JLabel 中带有 `tag html` 的自动换行示例：
屏幕链接：http://s019.radikal.ru/i628/1204/75/d14b8fa81f15.png http://s019.radikal.ru/i628/1204/75/d14b8fa81f15.png
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
public class Test extends JFrame
{
private JPanel contentPane;
/**
* Launch the application.
*/
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
try
{
Test frame = new Test();
frame.setVisible(true);
}
catch (Exception e)
{
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Test()
{
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
GridBagLayout gbl_contentPane = new GridBagLayout();
gbl_contentPane.columnWidths = new int[] { 0, 0 };
gbl_contentPane.rowHeights = new int[] { 0, 0 };
gbl_contentPane.columnWeights = new double[] { 0.0, Double.MIN_VALUE };
gbl_contentPane.rowWeights = new double[] { 0.0, Double.MIN_VALUE };
contentPane.setLayout(gbl_contentPane);
JLabel lblNewLabel = new JLabel(
"<html>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</html>");
GridBagConstraints gbc_lblNewLabel = new GridBagConstraints();
gbc_lblNewLabel.weightx = 1.0;
gbc_lblNewLabel.fill = GridBagConstraints.BOTH;
gbc_lblNewLabel.gridx = 0;
gbc_lblNewLabel.gridy = 0;
contentPane.add(lblNewLabel, gbc_lblNewLabel);
}
}
