TCP、UDP协议客户端

package cn.edu.ldu; import cn.edu.ldu.util.Message; import cn.edu.ldu.util.Translate; import java.awt.Toolkit; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.File; import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.InetSocketAddress; import java.net.ServerSocket; import java.net.Socket; import java.net.SocketAddress; import java.util.List; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import javax.swing.JFileChooser; import javax.swing.JOptionPane; import javax.swing.SwingWorker; /** * ClientUI，客户机聊天界面类 * @author 南京农业大学 19215227 计科152 程柯 */ public class ClientUI extends javax.swing.JFrame { private DatagramSocket clientSocket; //客户机套接字 private Message msg; //消息对象 private byte[] data=new byte[8096]; //8K字节数组 /** * Creates new form ClientUI */ public ClientUI() { initComponents(); //设置窗体位置到屏幕中央 int x = (Toolkit.getDefaultToolkit().getScreenSize().width - this.getSize().width)/2; int y = (Toolkit.getDefaultToolkit().getScreenSize().height - this.getSize().height)/2; this.setLocation(x, y); filePanel.setVisible(false); } /** * 构造函数 * @param socket 客户机会话套接字 * @param msg 登录消息对象 */ public ClientUI(DatagramSocket socket,Message msg) { this(); //调用无参数构造函数，初始化界面 clientSocket=socket; //初始化会话套接字 this.msg=msg; //登录消息 //创建客户机消息接收和处理线程 Thread recvThread=new ReceiveMessage(clientSocket,this); recvThread.start();//启动消息线程 } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { fileMenu = new javax.swing.JPopupMenu(); uploadFile = new javax.swing.JMenuItem(); jScrollPane2 = new javax.swing.JScrollPane(); txtInput = new javax.swing.JTextArea(); jScrollPane3 = new javax.swing.JScrollPane(); userList = new javax.swing.JList<>(); filePanel = new javax.swing.JPanel(); fileLabel = new javax.swing.JLabel(); progressBar = new javax.swing.JProgressBar(); jScrollPane1 = new javax.swing.JScrollPane(); txtArea = new javax.swing.JTextArea(); btnSend = new javax.swing.JButton(); btnFile = new javax.swing.JButton(); jScrollPane4 = new javax.swing.JScrollPane(); fileList = new javax.swing.JList<>(); uploadFile.setText("上传文件"); uploadFile.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { uploadFileActionPerformed(evt); } }); fileMenu.add(uploadFile); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); addWindowListener(new java.awt.event.WindowAdapter() { public void windowClosing(java.awt.event.WindowEvent evt) { formWindowClosing(evt); } }); jScrollPane2.setBorder(javax.swing.BorderFactory.createTitledBorder("发言窗口")); txtInput.setColumns(20); txtInput.setRows(5); jScrollPane2.setViewportView(txtInput); jScrollPane3.setBorder(javax.swing.BorderFactory.createTitledBorder("在线用户")); jScrollPane3.setViewportView(userList); fileLabel.setText("上传进度："); progressBar.setStringPainted(true); javax.swing.GroupLayout filePanelLayout = new javax.swing.GroupLayout(filePanel); filePanel.setLayout(filePanelLayout); filePanelLayout.setHorizontalGroup( filePanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(filePanelLayout.createSequentialGroup() .addContainerGap() .addComponent(fileLabel, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(95, 158, Short.MAX_VALUE)) .addGroup(filePanelLayout.createSequentialGroup() .addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(0, 0, Short.MAX_VALUE)) ); filePanelLayout.setVerticalGroup( filePanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(filePanelLayout.createSequentialGroup() .addGap(0, 0, Short.MAX_VALUE) .addComponent(fileLabel) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(35, 35, 35)) ); jScrollPane1.setBorder(javax.swing.BorderFactory.createTitledBorder("会话消息窗口")); txtArea.setColumns(20); txtArea.setRows(5); jScrollPane1.setViewportView(txtArea); btnSend.setText("发送"); btnSend.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnSendActionPerformed(evt); } }); btnFile.setText("文件传输"); btnFile.setFocusable(false); btnFile.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER); btnFile.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM); btnFile.addMouseListener(new java.awt.event.MouseAdapter() { public void mousePressed(java.awt.event.MouseEvent evt) { btnFileMousePressed(evt); } }); btnFile.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnFileActionPerformed(evt); } }); jScrollPane4.setBorder(javax.swing.BorderFactory.createTitledBorder("服务器文件列表（单击下载）")); fileList.addMouseListener(new java.awt.event.MouseAdapter() { public void mouseClicked(java.awt.event.MouseEvent evt) { fileListMouseClicked(evt); } }); jScrollPane4.setViewportView(fileList); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(filePanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGroup(layout.createSequentialGroup() .addGap(67, 67, 67) .addComponent(btnFile) .addGap(30, 30, 30) .addC