【发布时间】：2015-08-03 07:20:45
【问题描述】：
我有一个 JTable 有 3 列，第二列有 ImageIcons。我想仅按图像名称过滤该列，但有一个问题：该列的内容是图像的完整路径，如果我输入路径中的单词/字母，我会收到所有记录.
例如
这是我的jTabel 和getColumnClass：
这是没有getColumnClass：
如果我在Enter value 字段中输入“资源”，则没有任何变化，因为所有单元格都有此内容。
有没有什么方法可以只按图片名称过滤而不用扩展名（例如橙色、沃达丰、cosmote）？
下面是我的代码：
package main;
import javax.swing.DefaultCellEditor;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.RowFilter;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableRowSorter;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
@SuppressWarnings("serial")
public class PhoneBook extends JFrame {
private JPanel panel1;
private static ImageIcon frameIcon = new ImageIcon("resources/appIcons/icon.png");
private JComboBox<String> comboBox;
private JComboBox<String> filterColumnBox;
private MyTableModel model;
private static ArrayList<String> phoneNumberList = new ArrayList<String>();
private String filterValue;
private int sortColumn;
public PhoneBook(String group) {
setDesign(group);
}
/**
* Set column filter
*/
private void setColumnIndex() {
try
{
if(filterColumnBox.getSelectedItem().equals("Name")) {
sortColumn = 0;
}
else if(filterColumnBox.getSelectedItem().equals("Operator")) {
sortColumn = 1;
}
else {
sortColumn = 2;
}
System.out.println("Functia setColumnIndex: " + filterColumnBox.getSelectedItem() + " " + sortColumn);
} catch (Exception e)
{
System.out.println("Exceptie: " + e.getMessage());
}
}
/**
* Add phone numbers to ComboBox
* @param cbColumn
*/
private void comboBoxColumn(TableColumn cbColumn) {
getNumbers();
comboBox = new JComboBox<String>();
for (String c : phoneNumberList) {
comboBox.addItem(c);
}
cbColumn.setCellEditor(new DefaultCellEditor(comboBox));
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setToolTipText("Click for numbers");
cbColumn.setCellRenderer(renderer);
}
/**
* Get phone number and add into phoneNumberList
*/
public void getNumbers() {
phoneNumberList.add("0733333333");
phoneNumberList.add("0744444444");
}
/**
* Extends AbstractTableModel for table model
*/
class MyTableModel extends AbstractTableModel {
private String[] columnNames = {"Name",
"Operator",
"Numbers"};
private Object[][] data = {
{"Kathy Smith", new ImageIcon("resources/opIcons/orange.png"), "0733333331"},
{"John Doe", new ImageIcon("resources/opIcons/vodafone.png"), "0733333332"},
{"Sue Black", new ImageIcon("resources/opIcons/vodafone.png"), "0733333333"},
{"Jane White", new ImageIcon("resources/opIcons/cosmote.png"), "0733333334"},
{"Jane White", new ImageIcon("resources/opIcons/cosmote.png"), "0733333335"},
{"Jane White", new ImageIcon("resources/opIcons/cosmote.png"), "0733333336"},
{"Joe Brown", new ImageIcon("resources/opIcons/orange.png"), "0733333337"}
};
public int getColumnCount() {
return columnNames.length;
}
public int getRowCount() {
return data.length;
}
public String getColumnName(int col) {
return columnNames[col];
}
public Object getValueAt(int row, int col) {
return data[row][col];
}
/*public Class<?> getColumnClass(int column) {
Class<?> returnValue;
if ((column >= 0) && (column < getColumnCount())) {
System.out.println("Functia getColumnClass: " + column);
returnValue = getValueAt(0, column).getClass();
} else {
returnValue = Object.class;
}
return returnValue;
}*/
//For editable fields (ComboBox)
public boolean isCellEditable(int row, int col) {
if (col < 2) {
return false;
} else {
return true;
}
}
//For changing values in ComboBox
public void setValueAt(Object value, int row, int col) {
data[row][col] = value;
fireTableCellUpdated(row, col);
}
}
/**
* GUI design
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
private void setDesign(String group) {
setTitle("Phone Book Application - " + group);
setSize(600, 500);
setIconImage(frameIcon.getImage());
model = new MyTableModel();
final JTable table = new JTable(model);
table.setPreferredScrollableViewportSize(new Dimension(500, 200));
table.setFillsViewportHeight(false);
final TableRowSorter<MyTableModel> sorter = new TableRowSorter<MyTableModel>(model);
table.setRowSorter(sorter);
//Table row height
table.setRowHeight(35);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Render last column
comboBoxColumn(table.getColumnModel().getColumn(2));
GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.columnWidths = new int[]{600, 0};
gridBagLayout.rowHeights = new int[]{280, 220, 0};
gridBagLayout.columnWeights = new double[]{1.0, Double.MIN_VALUE};
gridBagLayout.rowWeights = new double[]{0.0, 0.0, Double.MIN_VALUE};
setLayout(gridBagLayout);
GridBagConstraints gbc_scrollPaneTable = new GridBagConstraints();
gbc_scrollPaneTable.insets = new Insets(0, 0, 5, 0);
gbc_scrollPaneTable.fill = GridBagConstraints.BOTH;
gbc_scrollPaneTable.gridx = 0;
gbc_scrollPaneTable.gridy = 0;
add(scrollPane, gbc_scrollPaneTable);
JScrollPane scrollPaneInfo = new JScrollPane();
GridBagConstraints gbc_scrollPaneInfo = new GridBagConstraints();
gbc_scrollPaneInfo.fill = GridBagConstraints.BOTH;
gbc_scrollPaneInfo.gridx = 0;
gbc_scrollPaneInfo.gridy = 1;
add(scrollPaneInfo, gbc_scrollPaneInfo);
panel1 = new JPanel();
scrollPaneInfo.setViewportView(panel1);
GridBagLayout gbl_panel = new GridBagLayout();
gbl_panel.columnWidths = new int[]{150, 100, 100, 100, 150, 0};
gbl_panel.rowHeights = new int[]{25, 25, 25, 25,25, 25,25, 25,20};
gbl_panel.columnWeights = new double[]{1.0, 1.0, Double.MIN_VALUE};
gbl_panel.rowWeights = new double[]{1.0, 1.0, 1.0, 1.0, 1.0, 1.0, Double.MIN_VALUE};
panel1.setLayout(gbl_panel);
JLabel filterColumnLbl = new JLabel("Choose a column");
GridBagConstraints gbc_filterColumnLbl = new GridBagConstraints();
//gbc_filterColumnLbl.fill = GridBagConstraints.VERTICAL;
gbc_filterColumnLbl.anchor = GridBagConstraints.WEST;
gbc_filterColumnLbl.insets = new Insets(5, 15, 0, 0);
gbc_filterColumnLbl.gridx = 0;
gbc_filterColumnLbl.gridy = 0;
panel1.add(filterColumnLbl, gbc_filterColumnLbl);
String[] columnName = { "Name", "Operator", "Numbers" };
filterColumnBox = new JComboBox(columnName);
GridBagConstraints gbc_filterColumnBox = new GridBagConstraints();
//gbc_filterColumnBox.fill = GridBagConstraints.VERTICAL;
gbc_filterColumnBox.anchor = GridBagConstraints.WEST;
gbc_filterColumnBox.insets = new Insets(5, 15, 0, 0);
gbc_filterColumnBox.gridx = 1;
gbc_filterColumnBox.gridy = 0;
panel1.add(filterColumnBox, gbc_filterColumnBox);
JLabel filterValueLbl = new JLabel("Enter value");
GridBagConstraints gbc_filterValueLbl = new GridBagConstraints();
//gbc_filterValueLbl.fill = GridBagConstraints.VERTICAL;
gbc_filterValueLbl.anchor = GridBagConstraints.WEST;
gbc_filterValueLbl.insets = new Insets(5, 15, 0, 0);
gbc_filterValueLbl.gridx = 0;
gbc_filterValueLbl.gridy = 1;
panel1.add(filterValueLbl, gbc_filterValueLbl);
final JTextField filterValueTxt = new JTextField();
GridBagConstraints gbc_filterValueTxt = new GridBagConstraints();
//gbc_filterValueTxt.fill = GridBagConstraints.VERTICAL;
gbc_filterValueTxt.anchor = GridBagConstraints.WEST;
gbc_filterValueTxt.insets = new Insets(5, 15, 0, 0);
gbc_filterValueTxt.gridx = 1;
gbc_filterValueTxt.gridy = 1;
panel1.add(filterValueTxt, gbc_filterValueTxt);
filterValueTxt.setColumns(10);
JButton filterBtn = new JButton("Apply filter");
GridBagConstraints gbc_filterBtn = new GridBagConstraints();
//gbc_filterValueTxt.fill = GridBagConstraints.VERTICAL;
gbc_filterBtn.anchor = GridBagConstraints.WEST;
gbc_filterBtn.insets = new Insets(5, 15, 0, 0);
gbc_filterBtn.gridx = 0;
gbc_filterBtn.gridy = 2;
filterBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(!filterValueTxt.getText().equals("")) {
filterValue = filterValueTxt.getText();
setColumnIndex();
if(sortColumn == 1) {
filterValue = filterValue.toLowerCase();
System.out.println("Operator: " + filterValue.toLowerCase());
}
if (filterValue.length() == 0) {
sorter.setRowFilter(null);
} else {
System.out.println("Apply listener" + filterValue + " "+filterValue.length() + " sort: "+ sortColumn );
sorter.setRowFilter(RowFilter.regexFilter(filterValue, sortColumn));
}
}
else {
JOptionPane.showMessageDialog(null, "Enter a value!");
}
}
});
panel1.add(filterBtn, gbc_filterBtn);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // important
pack();
setVisible(true); // important
}
}
【问题讨论】：
-
每次XxxRenderer重绘JTables视图时使用局部变量而不是加载Icon
-
“按 ImageIcon 列过滤 jTable” 这很反直觉。那么，用户必须知道图像的 name 才能获得该列的过滤器吗？为什么不将名称放在旁边的列中，然后对其进行过滤？否则，我会提供一个过滤器来呈现图像本身以供用户选择，而不是图像的文件 names。
-
1) 按照@AndrewThompson 所说的去做，但作为一种技术解决方案，只需将共享路径添加到键入的字符串。 2) 粘贴MCVE，而不是链接到您的完整代码。
-
顺便说一句-您是否尝试过过滤“乔”然后恢复整个列表？我找不到如何做到这一点 - 按原样使用代码。如果文本字段为空，最好返回整个（未过滤的）列表。顺便说一句 - 你遵循@user1803551 的建议并发布代码很好，但是 MCVE 需要
main(string[])来运行它。例如，获取图像的一种方法是热链接到在this Q&A 中看到的图像（尽管这些图像不会有您的示例中看到的“好”字符串名称）。 -
你的过滤器区分大小写，有点奇怪。