现在我有一个用KeyReleased事件实现的搜索textField，当我开始输入例如来自“Andrew”的“An”时，它没有找到/更新jTable，就在我完成键入（caseSensitive）之后的名字我想找。
所以，我想要的是从site实现Filtering方法，但是我遇到了很多问题。在以下实现并删除“旧”KeyReleased事件后，当我在textfield“txt_search”中输入内容时，jTable没有任何反应。
我的IDE（NetBeans）生成的表格代码是（从自定义代码面板复制）：
Table_Employee = new javax.swing.JTable();
Table_Employee.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"Title 1", "Title 2", "Title 3", "Title 4"
}
)
);
Table_Employee.setToolTipText("Employee info table");
Table_Employee.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
Table_Employee.getTableHeader().setReorderingAllowed(false);
Table_Employee.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
Table_EmployeeMouseClicked(evt);
}
});
Table_Employee.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
Table_EmployeeKeyPressed(evt);
}
});
jScrollPane1.setViewportView(Table_Employee);
我在我的面板类中添加了这个，其中table是：
import java.awt.Toolkit;
import java.awt.event.WindowEvent;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.swing.JOptionPane;
import net.proteanit.sql.DbUtils;
import java.awt.event.*;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.text.*;
import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableRowSorter;
public class Employee_info extends javax.swing.JFrame {
Connection conn=null;
ResultSet rs=null;
PreparedStatement pst=null;
private TableRowSorter<DefaultTableModel> sorter;
/**
* Creates new form Employee_info
*/
public Employee_info() {
initComponents();
conn=javaconnect.ConnecrDb();
Update_table();
Fillcombo();
currentDate();
Table_Employee.setAutoCreateRowSorter(true);
Table_Employee.setFillsViewportHeight(true);
Table_Employee.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
DefaultTableModel model = new DefaultTableModel();
sorter = new TableRowSorter<DefaultTableModel>(model);
Table_Employee = new JTable(model);
txt_search = new JTextField();
//Whenever filterText changes, invoke newFilter.
txt_search.getDocument().addDocumentListener(
new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
newFilter();
}
public void insertUpdate(DocumentEvent e) {
newFilter();
}
public void removeUpdate(DocumentEvent e) {
newFilter();
}
});
}
private void newFilter() {
RowFilter<DefaultTableModel, Object> rf = null;
//If current expression doesn't parse, don't update.
try {
rf = RowFilter.regexFilter(txt_search.getText(), 0);
} catch (java.util.regex.PatternSyntaxException e) {
return;
}
sorter.setRowFilter(rf);
}
我真的需要一些帮助，拜托！这是我的最后一次机会，因为我真的制作了谷歌搜索解决方案，没有任何改变。
尊重， 安德鲁
答案 0 :(得分：5)
来自JTable教程的关于过滤和排序的小修改代码
为JCheckBox过滤你可以把“true”/“false”
码
import java.awt.*;
import java.util.regex.PatternSyntaxException;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class TableFilterSorter extends JPanel {
private boolean DEBUG = false;
private static final long serialVersionUID = 1L;
public TableFilterSorter() {
super(new BorderLayout(5, 5));
final JTextField filterCpText = new JTextField();
filterCpText.setFont(new Font("Serif", Font.BOLD, 28));
filterCpText.setForeground(Color.BLUE);
filterCpText.setBackground(Color.LIGHT_GRAY);
JPanel filterCpPanel = new JPanel();
filterCpPanel.setLayout(new BorderLayout(5, 5));
filterCpPanel.setBorder(BorderFactory.createEmptyBorder(1, 1, 1, 1));
filterCpPanel.setBackground(Color.LIGHT_GRAY);
filterCpPanel.setPreferredSize(new Dimension(300, 30));
filterCpPanel.add(filterCpText, BorderLayout.CENTER);
add(filterCpPanel, BorderLayout.NORTH);
final JTable table = new JTable(new MyTableModel());
table.setPreferredScrollableViewportSize(new Dimension(500, 160));
table.setFillsViewportHeight(true);
JScrollPane scrollPane = new JScrollPane(table);
add(scrollPane, BorderLayout.CENTER);
TableModel myTableModel = table.getModel();
final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(myTableModel);
table.setRowSorter(sorter);
filterCpText.getDocument().addDocumentListener(new DocumentListener() {
private void searchFieldChangedUpdate(DocumentEvent evt) {
String text = filterCpText.getText();
if (text.length() == 0) {
sorter.setRowFilter(null);
table.clearSelection();
} else {
try {
sorter.setRowFilter(RowFilter.regexFilter("(?i)" + text, 4));
table.clearSelection();
} catch (PatternSyntaxException pse) {
JOptionPane.showMessageDialog(null, "Bad regex pattern",
"Bad regex pattern", JOptionPane.ERROR_MESSAGE);
}
}
}
@Override
public void insertUpdate(DocumentEvent evt) {
searchFieldChangedUpdate(evt);
}
@Override
public void removeUpdate(DocumentEvent evt) {
searchFieldChangedUpdate(evt);
}
@Override
public void changedUpdate(DocumentEvent evt) {
searchFieldChangedUpdate(evt);
}
});
}
private class MyTableModel extends AbstractTableModel {
private static final long serialVersionUID = 1L;
private String[] columnNames = {"First Name", "Last Name", "Sport", "# of Years", "Vegetarian"};
private Object[][] data = {
{"Mary", "Campione", "Snowboarding", new Integer(5), false},
{"Alison", "Huml", "Rowing", new Integer(3), true},
{"Kathy", "Walrath", "Knitting", new Integer(2), false},
{"Sharon", "Zakhour", "Speed reading", new Integer(20), true},
{"Philip", "Milne", "Pool", new Integer(10), false},
{"Mary", "Campione", "Snowboarding", new Integer(5), false},
{"Alison", "Huml", "Rowing", new Integer(3), true},
{"Kathy", "Walrath", "Knitting", new Integer(2), false},
{"Sharon", "Zakhour", "Speed reading", new Integer(20), true},
{"Philip", "Milne", "Pool", new Integer(10), false},};
@Override
public int getColumnCount() {
return columnNames.length;
}
@Override
public int getRowCount() {
return data.length;
}
@Override
public String getColumnName(int col) {
return columnNames[col];
}
@Override
public Object getValueAt(int row, int col) {
return data[row][col];
}
@Override
public Class<?> getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
@Override
public boolean isCellEditable(int row, int col) {
if (col < 2) {
return false;
} else {
return true;
}
}
@Override
public void setValueAt(Object value, int row, int col) {
if (DEBUG) {
System.out.println("Setting value at " + row + "," + col
+ " to " + value + " (an instance of " + value.getClass() + ")");
}
data[row][col] = value;
fireTableCellUpdated(row, col);
if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
}
}
private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();
for (int i = 0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j = 0; j < numCols; j++) {
System.out.print(" " + data[i][j]);
}
System.out.println();
}
System.out.println("--------------------------");
}
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("TableDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
TableFilterSorter newContentPane = new TableFilterSorter();
newContentPane.setOpaque(true);
frame.setContentPane(newContentPane);
frame.setLocation(150, 150);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
createAndShowGUI();
}
});
}
}