This article mainly introduces in detail the implementation of simple FTP software in Java language and the implementation method of the local window of FTP software. It has certain reference value. Interested friends can refer to it.
This article is We introduced the implementation method of the local window of FTP software for your reference. The specific content is as follows
1. First, take a look at the layout effect of the local window
2 , Take a look at the code implemented by the local windowFramework
3. The specific implementation code of the local window LocalPanel.java
package com.oyp.ftp.panel.local;
import java.awt.Color;
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.event.ItemEvent;
import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.LinkedList;
import java.util.Queue;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ActionMap;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
import javax.swing.table.TableStringConverter;
import com.oyp.ftp.FTPClientFrame;
import com.oyp.ftp.panel.FTPTableCellRanderer;
import com.oyp.ftp.panel.ftp.TableConverter;
import com.oyp.ftp.utils.DiskFile;
public class LocalPanel extends javax.swing.JPanel {
Queue<Object[]> queue = new LinkedList<Object[]>();
private UploadThread uploadThread = null;
private Desktop desktop = null;
private javax.swing.JButton createFolderButton;
private javax.swing.JButton delButton;
private javax.swing.JScrollPane scrollPane;
private javax.swing.JToolBar.Separator jSeparator1;
private javax.swing.JToolBar toolBar;
private javax.swing.JComboBox localDiskComboBox;
javax.swing.JTable localDiskTable;
javax.swing.JLabel localSelFilePathLabel;
private javax.swing.JButton renameButton;
private javax.swing.JButton uploadButton;
private TableRowSorter<TableModel> sorter;
FTPClientFrame frame = null;
public LocalPanel() {
initComponents();
}
public LocalPanel(FTPClientFrame client_Frame) {
frame = client_Frame;
if (Desktop.isDesktopSupported()) {
desktop = Desktop.getDesktop();
}
initComponents();
}
/**
* 界面布局与初始化方法
*/
private void initComponents() {
ActionMap actionMap = getActionMap();
actionMap.put("delAction", new DelFileAction(this, "删除", null));
actionMap.put("renameAction", new RennameAction(this, "重命名", null));
actionMap.put("createFolderAction", new CreateFolderAction(this,
"新建文件夹", null));
actionMap.put("uploadAction", new UploadAction(this, "上传", null));
actionMap.put("refreshAction", new RefreshAction(this, "刷新", null));
java.awt.GridBagConstraints gridBagConstraints;
toolBar = new javax.swing.JToolBar();
delButton = new javax.swing.JButton();
renameButton = new javax.swing.JButton();
createFolderButton = new javax.swing.JButton();
uploadButton = new javax.swing.JButton();
jSeparator1 = new javax.swing.JToolBar.Separator();
localDiskComboBox = new javax.swing.JComboBox();
localDiskComboBox.setPreferredSize(new Dimension(100, 25));
scrollPane = new javax.swing.JScrollPane();
localDiskTable = new javax.swing.JTable();
localDiskTable.setDragEnabled(true);
localSelFilePathLabel = new javax.swing.JLabel();
/**
* 向现有边框添加一个标题，使其具有指定的位置和默认字体和文本颜色（由当前外观确定）。
* TitledBorder.CENTER: 将标题文本置于边框线的中心。
* TitledBorder.ABOVE_TOP: 将标题置于边框顶端线的上部。
*/
setBorder(javax.swing.BorderFactory.createTitledBorder(null, "本地",
javax.swing.border.TitledBorder.CENTER,
javax.swing.border.TitledBorder.ABOVE_TOP));
setLayout(new java.awt.GridBagLayout());
toolBar.setRollover(true);
toolBar.setFloatable(false);
delButton.setText("删除");
delButton.setFocusable(false);
delButton.setAction(actionMap.get("delAction"));
toolBar.add(delButton);
renameButton.setText("重命名");
renameButton.setFocusable(false);
renameButton.setAction(actionMap.get("renameAction"));
toolBar.add(renameButton);
createFolderButton.setText("新文件夹");
createFolderButton.setFocusable(false);
createFolderButton.setAction(actionMap.get("createFolderAction"));
toolBar.add(createFolderButton);
uploadButton.setText("上传");
uploadButton.setFocusable(false);
uploadButton.setAction(actionMap.get("uploadAction"));
toolBar.add(uploadButton);
JButton refreshButton = new JButton();
refreshButton.setText("刷新");
refreshButton.setFocusable(false);
refreshButton.setAction(actionMap.get("refreshAction"));
toolBar.add(refreshButton);
toolBar.add(jSeparator1);
//File.listRoots():列出可用的文件系统根。
localDiskComboBox.setModel(new DefaultComboBoxModel(File.listRoots()));
localDiskComboBox.addItemListener(new java.awt.event.ItemListener() {
public void itemStateChanged(java.awt.event.ItemEvent evt) {
localDiskComboBoxItemStateChanged(evt);
}
});
toolBar.add(localDiskComboBox);
gridBagConstraints = new java.awt.GridBagConstraints();
gridBagConstraints.gridx = 0;
gridBagConstraints.gridy = 1;
gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
gridBagConstraints.weightx = 1.0;
add(toolBar, gridBagConstraints);
localDiskTable.setModel(new LocalTableModel());
localDiskTable.setShowHorizontalLines(false);
localDiskTable.setShowVerticalLines(false);
localDiskTable.getTableHeader().setReorderingAllowed(false);
localDiskTable.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
localDiskTableMouseClicked(evt);
}
});
scrollPane.setViewportView(localDiskTable);
scrollPane.getViewport().setBackground(Color.WHITE);
//设置渲染本地资源和FTP资源表格组件的渲染器
localDiskTable.getColumnModel().getColumn(0).setCellRenderer(
FTPTableCellRanderer.getCellRanderer());
//RowSorter 的一个实现，它使用 TableModel 提供排序和过滤操作。
sorter = new TableRowSorter<TableModel>(localDiskTable.getModel());
TableStringConverter converter = new TableConverter();
//设置负责将值从模型转换为字符串的对象。
sorter.setStringConverter(converter);
//设置 RowSorter。RowSorter 用于提供对 JTable 的排序和过滤。
localDiskTable.setRowSorter(sorter);
sorter.toggleSortOrder(0);
gridBagConstraints = new java.awt.GridBagConstraints();
gridBagConstraints.gridx = 0;
gridBagConstraints.gridy = 2;
gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
gridBagConstraints.weightx = 1.0;
gridBagConstraints.weighty = 1.0;
add(scrollPane, gridBagConstraints);
localSelFilePathLabel.setBorder(javax.swing.BorderFactory
.createEtchedBorder());
gridBagConstraints = new java.awt.GridBagConstraints();
gridBagConstraints.gridx = 0;
gridBagConstraints.gridy = 3;
gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
add(localSelFilePathLabel, gridBagConstraints);
}
/**
* 本地磁盘下拉选择框的选项改变事件处理方法，由事件监听器调用
*/
private void localDiskComboBoxItemStateChanged(java.awt.event.ItemEvent evt) {
if (evt.getStateChange() == ItemEvent.SELECTED) {
Object item = evt.getItem(); // 获取选择的下拉列表的选项
if (item instanceof File) { // 如果该选项是File类的实例对象
File selDisk = (File) item; // 将该选项转换成File类
// 调用listLocalFiles()方法，显示该File类指定的磁盘文件列表
listLocalFiles(selDisk);
}
}
}
/**
* 刷新指定文件夹的方法
*/
void refreshFolder(File file) {
listLocalFiles(file);
}
/**
* 刷新本地当前文件夹的方法
*/
public void refreshCurrentFolder() {
final File file = getCurrentFolder(); // 获取当前文件夹
Runnable runnable = new Runnable() { // 创建新的线程
public void run() {
listLocalFiles(file); // 重载当前文件夹的列表到表格中
}
};
//导致 runnable 的 run 方法在 EventQueue 的指派线程上被调用。
SwingUtilities.invokeLater(runnable); // 在事件线程中调用该线程对象
}
/**
* 获取当前文件夹
*/
public File getCurrentFolder() {
// 使用路径标签的路径创建当前文件夹对象
File file = new File(localSelFilePathLabel.getText());
// 如果表格选择了文件夹，或选择的文件有真是的上级文件夹
if (localDiskTable.getSelectedRow() > 1 && file.getParentFile() != null)
file = file.getParentFile(); // 获取该上级文件夹
return file; // 返回文件夹对象
}
/**
* 本地磁盘文件的表格单击和双击事件处理方法
*/
private void localDiskTableMouseClicked(java.awt.event.MouseEvent evt) {
int selectedRow = localDiskTable.getSelectedRow(); // 获取选择的表格行号
if (selectedRow < 0)
return;
// 获取表格中选择的当前行的第一个字段的值
Object value = localDiskTable.getValueAt(selectedRow, 0);
if (value instanceof DiskFile) { // 如果该值是DiskFile的实例对象
DiskFile selFile = (DiskFile) value;
// 设置状态栏的本地文件路径
localSelFilePathLabel.setText(selFile.getAbsolutePath());
if (evt.getClickCount() >= 2) { // 如果是双击鼠标
if (selFile.isDirectory()) { // 并且选择的是文件夹
listLocalFiles(selFile); // 显示该文件夹的内容列表
} else if (desktop != null) { // 如果不是文件夹
try {
desktop.open(selFile); // 关联本地系统程序打开该文件
} catch (IOException ex) {
Logger.getLogger(FTPClientFrame.class.getName()).log(
Level.SEVERE, null, ex);
}
}
}
} else { // 如果选择的表格内容不是DiskFile类的实例
// 判断选择的是不是..选项
if (evt.getClickCount() >= 2 && value.equals("..")) {
// 创建当前选择文件的临时文件
File tempFile = new File((localSelFilePathLabel.getText()));
// 显示选择的文件的上级目录列表
listLocalFiles(tempFile.getParentFile());
}
}
}
/**
* 读取本地文件到表格的方法
*/
private void listLocalFiles(File selDisk) {
if (selDisk == null || selDisk.isFile()) {
return;
}
localSelFilePathLabel.setText(selDisk.getAbsolutePath());
File[] listFiles = selDisk.listFiles(); // 获取磁盘文件列表
// 获取表格的数据模型
DefaultTableModel model = (DefaultTableModel) localDiskTable.getModel();
model.setRowCount(0); // 清除模型的内容
model.addRow(new Object[] { ".", "<DIR>", "" }); // 创建.选项
model.addRow(new Object[] { "..", "<DIR>", "" }); // 创建..选项
if (listFiles == null) {
JOptionPane.showMessageDialog(this, "该磁盘无法访问");
return;
}
// 遍历磁盘根文件夹的内容，添加到表格中
for (File file : listFiles) {
File diskFile = new DiskFile(file); // 创建文件对象
String length = file.length() + "B "; // 获取文件大小
if (file.length() > 1000 * 1000 * 1000) { // 计算文件G单位
length = file.length() / 1000000000 + "G ";
}
if (file.length() > 1000 * 1000) { // 计算文件M单位
length = file.length() / 1000000 + "M ";
}
if (file.length() > 1000) {
length = file.length() / 1000 + "K "; // 计算文件K单位
}
if (file.isDirectory()) { // 显示文件夹标志
length = "<DIR>";
}
// 获取文件的最后修改日期
String modifDate = new Date(file.lastModified()).toLocaleString();
if (!file.canRead()) {
length = "未知";
modifDate = "未知";
}
// 将单个文件的信息添加到表格的数据模型中
model.addRow(new Object[] { diskFile, length, modifDate });
}
localDiskTable.clearSelection(); // 取消表格的选择项
}
/**
* 停止文件上传线程的方法
*/
public void stopUploadThread() {
if (uploadThread != null)
uploadThread.stopThread();
}
public javax.swing.JComboBox getLocalDiskComboBox() {
return localDiskComboBox;
}
/**
* 设置FTP连接，并启动上传队列线程的方法。
*/
public void setFtpClient(String server, int port, String userStr,
String passStr) {
if (uploadThread != null)
uploadThread.stopThread();
uploadThread = new UploadThread(this, server, port, userStr, passStr);
uploadThread.start();
}
public Queue<Object[]> getQueue() {
return queue;
}
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