谢谢Hovercraft Full Of Eels注意到我的问题充满了困惑的代码，不太可能得到解决。从那时起，我创建了一个“最小”测试程序来显示问题:
问题
我想要做的是有一个 GUI，它显示包含员工信息的表格，并且还允许用户通过在 GUI 顶部的 jtextfield 中键入内容来对所述表格进行实时搜索。
所以我目前有一个 java 类，它创建一个表并用员工信息填充该表。此信息通过由 SwingWorker 处理的 SQL 语句放入表中。 GUI 工作得很好，直到我尝试将 TableRowSorter 添加到包含信息的表中，这会产生错误:
Exception in thread "AWT-EventQueue-0" java.lang.IndexOutOfBoundsException: Invalid range
at javax.swing.DefaultRowSorter.checkAgainstModel(Unknown Source)
at javax.swing.DefaultRowSorter.rowsInserted(Unknown Source)
at javax.swing.JTable.notifySorter(Unknown Source)
at javax.swing.JTable.sortedTableChanged(Unknown Source)
at javax.swing.JTable.tableChanged(Unknown Source)
at javax.swing.table.AbstractTableModel.fireTableChanged(Unknown Source)
at javax.swing.table.AbstractTableModel.fireTableRowsInserted(Unknown Source)
at tesPackage.WorkerTest$JDBCModel$JDBCWorker.process(WorkerTest.java:276)
基于此example ，这是一个
工作示例
package tesPackage;
import java.awt.BorderLayout;
import java.util.concurrent.ThreadLocalRandom;
import java.awt.EventQueue;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.RowFilter;
import javax.swing.ScrollPaneConstants;
import javax.swing.SwingWorker;
import javax.swing.border.EmptyBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
/**
* @see https://stackoverflow.com/a/34742409/230513
* @see https://stackoverflow.com/a/24762078/230513
*/
public class WorkerTest {
private static final int N = 25;
private static final String URL = "jdbc:h2:mem:test";
private static final Random r = new Random();
private JPanel contentPane;
private static JTable tblSchedule;
private JScrollPane scrollSchedTable;
private JDBCModel model;
private JPanel panel;
private JTextField textField;
private static TableRowSorter<TableModel> rowSorter;
private void display() {
createTestDatabase(N); //Create the Test Database
//Create the GUI
JFrame f = new JFrame("WorkerTest");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setBounds(100, 100, 780, 450);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
f.setContentPane(contentPane);
contentPane.setLayout(new BorderLayout(0, 0));
{
scrollSchedTable = new JScrollPane();
scrollSchedTable.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
contentPane.add(scrollSchedTable);
{
tblSchedule = new JTable();
tblSchedule.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
tblSchedule.setShowHorizontalLines(true);
tblSchedule.setShowVerticalLines(true);
tblSchedule.setFillsViewportHeight(true);
model = new JDBCModel(getConnection(), "select * from city");
tblSchedule.setModel(model);
rowSorter = new TableRowSorter<TableModel>(model); //IF UNCOMMENT THESE 2 LINES GUI WILL RUN
tblSchedule.setRowSorter(rowSorter); //BUT IF TYPE IN SEARCH BOX THERE IS AN ERROR
scrollSchedTable.setViewportView(tblSchedule);
}
{
panel = new JPanel();
contentPane.add(panel, BorderLayout.NORTH);
panel.setLayout(new BorderLayout(0, 0));
{
textField = new JTextField();
panel.add(textField, BorderLayout.EAST);
textField.setColumns(10);
}
{
panel.add(model.jpb, BorderLayout.CENTER);
}
{
textField.getDocument().addDocumentListener(new DocumentListener(){
@Override
public void insertUpdate(DocumentEvent e) {
String text = textField.getText().trim();
if (text.trim().length() == 0) {
rowSorter.setRowFilter(null);
} else {
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
}
}
@Override
public void removeUpdate(DocumentEvent e) {
String text = textField.getText();
if (text.trim().length() == 0) {
rowSorter.setRowFilter(null);
} else {
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
}
}
@Override
public void changedUpdate(DocumentEvent e) {
String text = textField.getText();
if (text.trim().length() == 0) {
rowSorter.setRowFilter(null);
} else {
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
}
}
});
}
}
}
f.setVisible(true);
}
private static class Row {
String lname;
String fname;
String monTime;
String tueTime;
String wedTime;
String thuTime;
String friTime;
String satTime;
String sunTime;
String totalTime;
}
private static class JDBCModel extends AbstractTableModel {
private final JProgressBar jpb = new JProgressBar();
private static final long serialVersionUID = 1L;
private final List<Row> data = new ArrayList<>();
private ResultSet rs = null;
private ResultSetMetaData meta;
public JDBCModel(Connection conn, String query) {
try {
Statement s = conn.createStatement();
rs = s.executeQuery(query);
meta = rs.getMetaData();
JDBCWorker worker = new JDBCWorker();
jpb.setIndeterminate(true);
worker.execute();
} catch (SQLException e) {
e.printStackTrace(System.err);
}
}
@Override
public int getRowCount() {
return data.size();
}
@Override
public int getColumnCount() {
return 10;
}
@Override
public Object getValueAt(int rowIndex, int colIndex) {
Row row = data.get(rowIndex);
switch (colIndex) {
case 0:
return row.lname;
case 1:
return row.fname;
case 2:
return row.monTime;
case 3:
return row.tueTime;
case 4:
return row.wedTime;
case 5:
return row.thuTime;
case 6:
return row.friTime;
case 7:
return row.satTime;
case 8:
return row.sunTime;
case 9:
return row.totalTime;
}
return null;
}
@Override
public String getColumnName(int colIndex) {
String name = null;
switch(colIndex){
case 0: name = "Last Name";
return name;
case 1: name = "First Name";
return name;
case 2: name = "Monday";
return name;
case 3: name = "Tuesday";
return name;
case 4: name = "Wednesday";
return name;
case 5: name = "Thursday";
return name;
case 6: name = "Friday";
return name;
case 7: name = "Saturday";
return name;
case 8: name = "Sunday";
return name;
case 9: name = "Total";
return name;
}
return name;
}
private class JDBCWorker extends SwingWorker<List<Row>, Row> {
@Override
protected List<Row> doInBackground() {
try {
while (rs.next()) {
Row r = new Row();
Integer total = 0;
r.lname = rs.getString(2);
r.fname = rs.getString(1);
r.monTime = String.valueOf(rs.getInt(3) + " - " + rs.getInt(4));
total += rs.getInt(4) - rs.getInt(3);
r.tueTime = String.valueOf(rs.getInt(5) + " - " + rs.getInt(6));
total += rs.getInt(6) - rs.getInt(5);
r.wedTime = String.valueOf(rs.getInt(7) + " - " + rs.getInt(8));
total += rs.getInt(8) - rs.getInt(7);
r.thuTime = String.valueOf(rs.getInt(9) + " - " + rs.getInt(10));
total += rs.getInt(10) - rs.getInt(9);
r.friTime = String.valueOf(rs.getInt(11) + " - " + rs.getInt(12));
total += rs.getInt(12) - rs.getInt(11);
r.satTime = String.valueOf(rs.getInt(13) + " - " + rs.getInt(14));
total += rs.getInt(14) - rs.getInt(13);
r.sunTime = String.valueOf(rs.getInt(15) + " - " + rs.getInt(16));
total += rs.getInt(16) - rs.getInt(15);
r.totalTime = String.valueOf(total);
publish(r);
}
} catch (SQLException e) {
e.printStackTrace(System.err);
}
return data;
}
@Override
protected void process(List<Row> chunks) {
int n = getRowCount() + 1;
System.out.println("Row Count = " + n);
System.out.println("Chunks Size = " + chunks.size());
for (Row row : chunks) {
data.add(row);
}
fireTableRowsInserted(n, n + chunks.size());
}
@Override
protected void done(){
jpb.setIndeterminate(false);
jpb.setValue(100);
}
}
}
//Creates the Test DB with test names and working hours
private static void createTestDatabase(int n) {
Connection conn = getConnection();
try {
Statement st = conn.createStatement();
st.execute("create table city(fname varchar(10), lname varchar(10), mons int(2), mone int(2), tues int(2), tuee int(2), weds int(2), wede int(2), thus int(2), thue int(2), fris int(2), frie int(2), sats int(2), sate int(2), suns int(2), sune int(2))");
Random gen = new Random();
PreparedStatement ps = conn.prepareStatement(
"insert into city values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
for (int i = 0; i < n; i++) {
ps.setString(1, "First" + i);
ps.setString(2, "Last" + i);
ps.setInt(3, ThreadLocalRandom.current().nextInt(6, 12));
ps.setInt(4, ThreadLocalRandom.current().nextInt(13, 22));
ps.setInt(5, ThreadLocalRandom.current().nextInt(6, 12));
ps.setInt(6, ThreadLocalRandom.current().nextInt(13, 22));
ps.setInt(7, ThreadLocalRandom.current().nextInt(6, 12));
ps.setInt(8, ThreadLocalRandom.current().nextInt(13, 22));
ps.setInt(9, ThreadLocalRandom.current().nextInt(6, 12));
ps.setInt(10, ThreadLocalRandom.current().nextInt(13, 22));
ps.setInt(11, ThreadLocalRandom.current().nextInt(6, 12));
ps.setInt(12, ThreadLocalRandom.current().nextInt(13, 22));
ps.setInt(13, ThreadLocalRandom.current().nextInt(6, 12));
ps.setInt(14, ThreadLocalRandom.current().nextInt(13, 22));
ps.setInt(15, ThreadLocalRandom.current().nextInt(6, 12));
ps.setInt(16, ThreadLocalRandom.current().nextInt(13, 22));
ps.execute();
}
} catch (SQLException ex) {
ex.printStackTrace(System.err);
}
}
private static Connection getConnection() {
try {
return DriverManager.getConnection(URL, "", "");
} catch (SQLException e) {
e.printStackTrace(System.err);
}
return null;
}
public static void main(String[] args) {
EventQueue.invokeLater(new WorkerTest()::display);
}
}
编辑(仅 5 分钟后)
所以我开始在eclipse中使用调试功能，当我单步调试程序时，我发现一些名为EDT.pumpOneEventForFilters(int)的事件有一个名为arg0<的变量(它是唯一的参数)，值为 -1。一旦进入此事件，就会抛出异常。我不确定这是否是有用的信息，但我想我应该把它扔掉以防万一。
最佳答案
原文example在 process() 的实现中通知监听的 JTable 新行:
fireTableRowsInserted(n, n + chunks.size());
由于表格在排序和过滤时需要考虑所有行，因此模型应通知“监听器表格行中的所有单元格值可能已更改。”
fireTableDataChanged();
顺便说一句，ThreadLocalRandom 的单个实例在 createTestDatabase() 中就足够了。
代码，经测试:
import java.awt.BorderLayout;
import java.util.concurrent.ThreadLocalRandom;
import java.awt.EventQueue;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.RowFilter;
import javax.swing.ScrollPaneConstants;
import javax.swing.SwingWorker;
import javax.swing.border.EmptyBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
/**
* @see https://stackoverflow.com/q/43161033/230513
* @see https://stackoverflow.com/a/34742409/230513
* @see https://stackoverflow.com/a/24762078/230513
*/
public class WorkerTest {
private static final int N = 256;
private static final String URL = "jdbc:h2:mem:test";
private static final Random r = new Random();
private JPanel contentPane;
private static JTable tblSchedule;
private JScrollPane scrollSchedTable;
private JDBCModel model;
private JPanel panel;
private JTextField textField;
private static TableRowSorter<TableModel> rowSorter;
private void display() {
createTestDatabase(N); //Create the Test Database
//Create the GUI
JFrame f = new JFrame("WorkerTest");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setBounds(100, 100, 780, 450);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
f.setContentPane(contentPane);
contentPane.setLayout(new BorderLayout(0, 0));
scrollSchedTable = new JScrollPane();
scrollSchedTable.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
contentPane.add(scrollSchedTable);
tblSchedule = new JTable();
tblSchedule.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
tblSchedule.setShowHorizontalLines(true);
tblSchedule.setShowVerticalLines(true);
tblSchedule.setFillsViewportHeight(true);
model = new JDBCModel(getConnection(), "select * from city");
tblSchedule.setModel(model);
rowSorter = new TableRowSorter<TableModel>(model);
tblSchedule.setRowSorter(rowSorter);
scrollSchedTable.setViewportView(tblSchedule);
panel = new JPanel();
contentPane.add(panel, BorderLayout.NORTH);
panel.setLayout(new BorderLayout(0, 0));
textField = new JTextField();
panel.add(textField, BorderLayout.EAST);
textField.setColumns(10);
panel.add(model.jpb, BorderLayout.CENTER);
textField.getDocument().addDocumentListener(new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent e) {
String text = textField.getText().trim();
if (text.trim().length() == 0) {
rowSorter.setRowFilter(null);
} else {
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
}
}
@Override
public void removeUpdate(DocumentEvent e) {
String text = textField.getText();
if (text.trim().length() == 0) {
rowSorter.setRowFilter(null);
} else {
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
}
}
@Override
public void changedUpdate(DocumentEvent e) {
String text = textField.getText();
if (text.trim().length() == 0) {
rowSorter.setRowFilter(null);
} else {
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
}
}
});
f.setVisible(true);
}
private static class Row {
String lname;
String fname;
String monTime;
String tueTime;
String wedTime;
String thuTime;
String friTime;
String satTime;
String sunTime;
String totalTime;
}
private static class JDBCModel extends AbstractTableModel {
private final JProgressBar jpb = new JProgressBar();
private static final long serialVersionUID = 1L;
private final List<Row> data = new ArrayList<>();
private ResultSet rs = null;
private ResultSetMetaData meta;
public JDBCModel(Connection conn, String query) {
try {
Statement s = conn.createStatement();
rs = s.executeQuery(query);
meta = rs.getMetaData();
JDBCWorker worker = new JDBCWorker();
jpb.setIndeterminate(true);
worker.execute();
} catch (SQLException e) {
e.printStackTrace(System.err);
}
}
@Override
public int getRowCount() {
return data.size();
}
@Override
public int getColumnCount() {
return 10;
}
@Override
public Object getValueAt(int rowIndex, int colIndex) {
Row row = data.get(rowIndex);
switch (colIndex) {
case 0:
return row.lname;
case 1:
return row.fname;
case 2:
return row.monTime;
case 3:
return row.tueTime;
case 4:
return row.wedTime;
case 5:
return row.thuTime;
case 6:
return row.friTime;
case 7:
return row.satTime;
case 8:
return row.sunTime;
case 9:
return row.totalTime;
}
return null;
}
@Override
public String getColumnName(int colIndex) {
String name = null;
switch (colIndex) {
case 0:
name = "Last Name";
return name;
case 1:
name = "First Name";
return name;
case 2:
name = "Monday";
return name;
case 3:
name = "Tuesday";
return name;
case 4:
name = "Wednesday";
return name;
case 5:
name = "Thursday";
return name;
case 6:
name = "Friday";
return name;
case 7:
name = "Saturday";
return name;
case 8:
name = "Sunday";
return name;
case 9:
name = "Total";
return name;
}
return name;
}
private class JDBCWorker extends SwingWorker<List<Row>, Row> {
@Override
protected List<Row> doInBackground() {
try {
while (rs.next()) {
Row r = new Row();
Integer total = 0;
r.lname = rs.getString(2);
r.fname = rs.getString(1);
r.monTime = String.valueOf(rs.getInt(3) + " - " + rs.getInt(4));
total += rs.getInt(4) - rs.getInt(3);
r.tueTime = String.valueOf(rs.getInt(5) + " - " + rs.getInt(6));
total += rs.getInt(6) - rs.getInt(5);
r.wedTime = String.valueOf(rs.getInt(7) + " - " + rs.getInt(8));
total += rs.getInt(8) - rs.getInt(7);
r.thuTime = String.valueOf(rs.getInt(9) + " - " + rs.getInt(10));
total += rs.getInt(10) - rs.getInt(9);
r.friTime = String.valueOf(rs.getInt(11) + " - " + rs.getInt(12));
total += rs.getInt(12) - rs.getInt(11);
r.satTime = String.valueOf(rs.getInt(13) + " - " + rs.getInt(14));
total += rs.getInt(14) - rs.getInt(13);
r.sunTime = String.valueOf(rs.getInt(15) + " - " + rs.getInt(16));
total += rs.getInt(16) - rs.getInt(15);
r.totalTime = String.valueOf(total);
publish(r);
}
} catch (SQLException e) {
e.printStackTrace(System.err);
}
return data;
}
@Override
protected void process(List<Row> chunks) {
int n = getRowCount() + 1;
System.out.println("Row Count = " + n);
System.out.println("Chunks Size = " + chunks.size());
for (Row row : chunks) {
data.add(row);
}
fireTableDataChanged();
}
@Override
protected void done() {
jpb.setIndeterminate(false);
jpb.setValue(100);
}
}
}
//Creates the Test DB with test names and working hours
private static void createTestDatabase(int n) {
ThreadLocalRandom r = ThreadLocalRandom.current();
Connection conn = getConnection();
try {
Statement st = conn.createStatement();
st.execute("create table city(fname varchar(10), lname varchar(10), mons int(2), mone int(2), tues int(2), tuee int(2), weds int(2), wede int(2), thus int(2), thue int(2), fris int(2), frie int(2), sats int(2), sate int(2), suns int(2), sune int(2))");
Random gen = new Random();
PreparedStatement ps = conn.prepareStatement(
"insert into city values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
for (int i = 0; i < n; i++) {
ps.setString(1, "First" + i);
ps.setString(2, "Last" + i);
ps.setInt(3, r.nextInt(6, 12));
ps.setInt(4, r.nextInt(13, 22));
ps.setInt(5, r.nextInt(6, 12));
ps.setInt(6, r.nextInt(13, 22));
ps.setInt(7, r.nextInt(6, 12));
ps.setInt(8, r.nextInt(13, 22));
ps.setInt(9, r.nextInt(6, 12));
ps.setInt(10, r.nextInt(13, 22));
ps.setInt(11, r.nextInt(6, 12));
ps.setInt(12, r.nextInt(13, 22));
ps.setInt(13, r.nextInt(6, 12));
ps.setInt(14, r.nextInt(13, 22));
ps.setInt(15, r.nextInt(6, 12));
ps.setInt(16, r.nextInt(13, 22));
ps.execute();
}
} catch (SQLException ex) {
ex.printStackTrace(System.err);
}
}
private static Connection getConnection() {
try {
return DriverManager.getConnection(URL, "", "");
} catch (SQLException e) {
e.printStackTrace(System.err);
}
return null;
}
public static void main(String[] args) {
EventQueue.invokeLater(new WorkerTest()::display);
}
}
关于java - 无法将 TableRowSorter 添加到 SwingWorker 生成的 JTable 中，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43161033/