Java语言实现简单FTP软件 FTP软件本地窗口实现（5）

本文为大家介绍了FTP软件本地窗口的实现方法，供大家参考，具体内容如下

1、首先看一下本地窗口的布局效果

2、看一下本地窗口实现的代码框架

3、本地窗口的具体实现代码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 queue = new linkedList(); 
  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 sorter; 
  FTPClientframe frame = null; 
 
  public LocalPanel() { 
    initComponents(); 
  } 
 
  public LocalPanel(FTPClientframe client_frame) { 
    frame = client_frame; 
    if (Desktop.isDesktopSupported()) { 
      desktop = Desktop.getDesktop(); 
    } 
    initComponents(); 
  } 
 
   
  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(); 
     
    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(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); 
  } 
 
   
  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); 
      } 
    } 
  } 
 
   
  void refreshFolder(File file) { 
    listLocalFiles(file); 
  } 
 
   
  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 
  } 
 
   
  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 
  } 
 
   
  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()); 
      } 
    } 
  } 
 
   
  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[] { ".", "", "" }); // 创建.选项 
    model.addRow(new Object[] { "..", "", "" }); // 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 = ""; 
      } 
      // 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 
  } 
 
   
  public void stopUploadThread() { 
    if (uploadThread != null) 
      uploadThread.stopThread(); 
  } 
 
  public javax.swing.JComboBox getLocalDiskComboBox() { 
    return localDiskComboBox; 
  } 
 
   
  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 getQueue() { 
    return queue; 
  } 
} 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。