我正在做一个摇摆的项目。我想从数据库中显示我在JTable中的数据.I
创造了JSplitpane。在面板1中创建了搜索按钮，jLabel和JTextBox用于来自Databse的sect数据...在面板2中我想在JTable.my数据库查询中显示搜索结果并且一切运行良好..但是我无法在panel2中显示JTable ..任何人都可以帮我解决这个问题。
public JFrame TimesheetReport（）{//创建第一个JFrame
final JFrame employeeFrame = new JFrame("Report");
employeeFrame.setExtendedState(Frame.MAXIMIZED_BOTH);
employeeFrame.setResizable(true)
employeeFrame.setLocation(100,50);
employeeFrame.setVisible(true);
employeeFrame.setResizable(false);
panel.setLayout(new FlowLayout());
panel1.setLayout(new BorderLayout());
employeeFrame.pack();
final JLabel label1;
final JLabel label2;
final JTextField text1;
final JTextField text2;
final JButton ADD;
{
label1 = new JLabel("From Date");
text1 = new JTextField(12);
label2 = new JLabel("End Date");
text2 = new JTextField(12);
JButton button2 = new JButton("calendar");
ADD=new JButton("Search");
ADD.setText("Search");
ADD.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
DbUtility TimesheetReport=new DbUtility();
TimesheetReport. loadDriver();
TimesheetReport.connect();
String value=(text1.getText());
String value2=(text2.getText());
ResultSet rs= TimesheetReport.executeSelectQuery14(value,value2);
String Activityid =null, EmployeeName = null,StartDate = null,EndDate=null,Activity=null,Project=null,Day1=null,Day2=null,Day3=null,Day4=null,Day5=null ;
try {
while (rs.next()) {
Activityid = rs.getString("Activityid");
EmployeeName = rs.getString("EmployeeName");
StartDate = rs.getString("StartDate");
EndDate = rs.getString("EndDate");
Activity = rs.getString("Activity");
Project= rs.getString("Project");
Day1 = rs.getString("Day1");
Day2 = rs.getString("Day2");
Day3 = rs.getString("Day3");
Day4 = rs.getString("Day4");
Day5 = rs.getString("Day5");
String[] columnNames = {"Activityid","EmployeeName", "StatrDate","EndDate", "Activity","Project","Day1","Day2","Day3","Day3","Day4","Day5"};
String data[][] = {{Activityid,EmployeeName, StartDate,EndDate,Activity,Project,Day1,Day2,Day3,Day4,Day5}};
System.out.println(Activityid+" "+EmployeeName+" "+StartDate+"" +EndDate+""+Activity+" "+Project+""+Day1+""+Day2+""+Day3+""+Day4+""+Day5);
final DefaultTableModel model = new DefaultTableModel(data, columnNames);
table2= new JTable(model);
table2.setRowHeight( 70 );
table2.setFillsViewportHeight(true);
JTextField field = new JTextField();
field.setForeground(Color.RED);
field.setBackground(Color.RED);
table2.getTableHeader().setPreferredSize(new Dimension(50,50));
table2.getTableHeader().setBackground(Color.blue);
table2.getTableHeader().setForeground(Color.white);
table2.getTableHeader().setFont(new Font("Serif", Font.BOLD, 15));
table2.getTableHeader().setOpaque(true);
table2.getModel();
table2.setForeground(Color.blue);
table2.setBackground(Color.white);
table2.setGridColor(Color.MAGENTA);
table2.setShowGrid(true);
JScrollPane pane = new JScrollPane(table2);
panel1.add(pane);
}
} catch (SQLException e1) {
e1.printStackTrace();
}
}
});
JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,panel,panel1 );
splitPane.setDividerLocation(300);
Dimension minimumSize = new Dimension(250, 0);
panel.setMinimumSize(minimumSize);
employeeFrame.add(splitPane);
pane.add(panel1);
panel.add(label1);
label1.setForeground(Color.white);
panel.add(text1);
panel.add(label2);
label2.setForeground(Color.white);
panel.add( text2);
panel.add(ADD);
}
return employeeFrame;
}
答案 0 :(得分：3)
但我无法在panel2中显示JTable ......任何人都可以帮我解决 这个问题。
您的代码不是SSCCE格式...它不能在简单的复制和粘贴上编译，并且由于table2未在给定代码的方法范围内声明，因此存在错误也没有提到panel2，但我认为你的意思是panel1 ......
<强>解决方案：
1）不要使用null / Absolute LayoutManager。
请阅读：
2）为什么需要将JTable添加到panel1（或问题panel2中引用）？如果有的话，我们会将JScrollPane作为视口添加到JTable panel1，只需将table2添加到JScrollPane并添加JScrollPane到JSplitPane即：
JScrollPane pane = new JScrollPane(table2);
JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, panel, pane);
或者将JTable添加到JScrollPane，然后将JScrollPane添加到panel1 BorderLayout，以便JPanel扩展到容器大小：
JPanel panel1=new JPanel(new BorderLayout());
....
JScrollPane pane = new JScrollPane(table2);
panel1.add(pane);
JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, panel, panel1);
3）另外因为我看到你通过最大化JFrame：
JFrame#setExtendedState(JFrame.MAXIMIZED_BOTH);
使用LayoutManager明智的做法是在更改JFrame大小时自动调整组件大小。 ，BorderLayout，GridLayout和GridBagLayout是我想到的一些。
4）在添加所有组件之前，也不要将JFrame设置为可见。
5）通过SwingUtilities.invokeLater(Runnable r)块在Event Dispatch Thread上创建Swing组件。
6）不要忘记在JFrame上调用pack()，然后再将其设置为可见，但在添加组件后。
7）此外，我发现此评论可疑：//Creating 1st JFrame请阅读The Use of Multiple JFrames, Good/Bad Practice?。而是使用CardLayout或JDialog。
8）我无法看到setLocation需要完全展开JFrame。
以下是包含修复程序的代码（我刚使用了所有组件默认LayoutManager s（panel1除外，它使用BorderLayout，因此JPanel将扩展到容器大小）：< / p>
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTable;
import javax.swing.JTextField;
public class Test {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new Test();
}
});
}
public Test() {
createAndShowGui();
}
public void createAndShowGui() {
final JFrame employeeFrame = new JFrame("Report");
employeeFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
final JPanel panel = new JPanel() {
@Override
public Dimension getMinimumSize() {
return new Dimension(250, 0);
}
};
final JTable table2 = new JTable(new String[][]{
{"one", "two", "three"},
{"one", "two", "three"},
{"one", "two", "three"}
}, new String[]{"col1", "col2", "col3"});
JPanel panel1 = new JPanel(new BorderLayout());//panel which holds jtable
final JLabel label1;
final JLabel label2;
final JTextField text1;
final JTextField text2;
final JButton ADD;
label1 = new JLabel("From Date");
text1 = new JTextField(12);
label2 = new JLabel("End Date");
text2 = new JTextField(12);
JButton button2 = new JButton("calendar");
ADD = new JButton("Search");
ADD.setText("Search");
ADD.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
/*
DbUtility createAndShowGui = new DbUtility();
createAndShowGui.loadDriver();
createAndShowGui.connect();
String value = (text1.getText());
String value2 = (text2.getText());
ResultSet rs = createAndShowGui.executeSelectQuery14(value, value2);
String Activityid = null, EmployeeName = null, StartDate = null, EndDate = null, Activity = null, Project = null, Day1 = null, Day2 = null, Day3 = null, Day4 = null, Day5 = null;
try {
while (rs.next()) {
Activityid = rs.getString("Activityid");
EmployeeName = rs.getString("EmployeeName");
StartDate = rs.getString("StartDate");
EndDate = rs.getString("EndDate");
Activity = rs.getString("Activity");
Project = rs.getString("Project");
Day1 = rs.getString("Day1");
Day2 = rs.getString("Day2");
Day3 = rs.getString("Day3");
Day4 = rs.getString("Day4");
Day5 = rs.getString("Day5");
String[] columnNames = {"Activityid", "EmployeeName", "StatrDate", "EndDate", "Activity", "Project", "Day1", "Day2", "Day3", "Day3", "Day4", "Day5"};
String data[][] = {{Activityid, EmployeeName, StartDate, EndDate, Activity, Project, Day1, Day2, Day3, Day4, Day5}};
System.out.println(Activityid + " " + EmployeeName + " " + StartDate + "" + EndDate + "" + Activity + " " + Project + "" + Day1 + "" + Day2 + "" + Day3 + "" + Day4 + "" + Day5);
final DefaultTableModel model = new DefaultTableModel(data, columnNames);
table2 = new JTable(model);
table2.setRowHeight(70);
table2.setFillsViewportHeight(true);
JTextField field = new JTextField();
field.setForeground(Color.RED);
field.setBackground(Color.RED);
table2.getTableHeader().setPreferredSize(new Dimension(50, 50));
table2.getTableHeader().setBackground(Color.blue);
table2.getTableHeader().setForeground(Color.white);
table2.getTableHeader().setFont(new Font("Serif", Font.BOLD, 15));
table2.getTableHeader().setOpaque(true);
table2.getModel();
table2.setForeground(Color.blue);
table2.setBackground(Color.white);
table2.setGridColor(Color.MAGENTA);
table2.setShowGrid(true);
}
} catch (SQLException e1) {
e1.printStackTrace();
}
*/
}
});
panel.add(label1);
label1.setForeground(Color.white);
panel.add(text1);
panel.add(label2);
label2.setForeground(Color.white);
panel.add(text2);
panel.add(ADD);
JScrollPane pane = new JScrollPane(table2);
panel1.add(pane);
JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, panel, panel1);
splitPane.setDividerLocation(300);
employeeFrame.add(splitPane);
employeeFrame.setExtendedState(Frame.MAXIMIZED_BOTH);
//employeeFrame.setLocation(100, 50);
employeeFrame.pack();
employeeFrame.setVisible(true);
employeeFrame.setResizable(false);//or else it wont work nicely withn JFrame#setExtendedState
}
}
答案 1 :(得分：0)
通过查看您的代码，我无法找到您将Table放置在实际上在SplitPane中添加的Panel或Pane中的位置。