java swing 界面显示,文件选择按钮并且选择后显示在文本框,再添加文件发送按钮 已socket形式发送到指定IP及端口号

以下是一个简单的Java Swing界面，其中包括一个文件选择按钮、一个文本框和一个发送按钮。一旦用户选择一个文件，文件路径将显示在文本框中。当用户点击发送按钮时，文件将作为数据包通过Socket发送到指定的IP地址和端口号。

import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.Socket;

public class FileSender extends JFrame {

    private JTextField ipField, portField, fileField;
    private JButton selectButton, sendButton;

    public FileSender() {
        initComponents();
    }

    private void initComponents() {
        setTitle("File Sender");

        // 创建IP地址和端口号输入框
        ipField = new JTextField("127.0.0.1", 10);
        portField = new JTextField("8080", 5);

        // 创建文件选择按钮和文件路径文本框
        selectButton = new JButton("选择文件");
        selectButton.addActionListener(new SelectAction());
        fileField = new JTextField(20);
        fileField.setEditable(false);

        // 创建发送按钮
        sendButton = new JButton("发送");
        sendButton.addActionListener(new SendAction());

        // 创建布局面板
        JPanel panel = new JPanel(new GridBagLayout());
        GridBagConstraints c = new GridBagConstraints();
        c.gridx = 0;
        c.gridy = 0;
        c.anchor = GridBagConstraints.WEST;
        c.insets = new Insets(5, 5, 5, 5);
        panel.add(new JLabel("IP地址:"), c);
        c.gridx++;
        panel.add(ipField, c);
        c.gridx++;
        panel.add(new JLabel("端口号:"), c);
        c.gridx++;
        panel.add(portField, c);
        c.gridx = 0;
        c.gridy++;
        panel.add(new JLabel("文件路径:"), c);
        c.gridx++;
        panel.add(fileField, c);
        c.gridx++;
        panel.add(selectButton, c);
        c.gridx = 0;
        c.gridy++;
        c.gridwidth = 2;
        panel.add(sendButton, c);

        // 将布局面板添加到窗口中
        getContentPane().add(panel);

        pack();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
    }

    private class SelectAction implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            // 创建文件选择器
            JFileChooser chooser = new JFileChooser();
            FileNameExtensionFilter filter = new FileNameExtensionFilter("所有文件", "*");
            chooser.setFileFilter(filter);

            // 显示文件选择器对话框
            int returnVal = chooser.showOpenDialog(FileSender.this);
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                // 获取所选文件的路径
                File file = chooser.getSelectedFile();
                fileField.setText(file.getAbsolutePath());
            }
        }
    }

    private class SendAction implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            // 获取IP地址和端口号
            String ip = ipField.getText();
            int port = Integer.parseInt(portField.getText());

            // 获取文件路径
            String filePath = fileField.getText();
            if (filePath.equals("")) {
                JOptionPane.showMessageDialog(FileSender.this, "请选择要发送的文件", "错误", JOptionPane.ERROR_MESSAGE);
                return;
            }

            // 创建Socket并连接到服务器
            try (Socket socket = new Socket(ip, port)) {
                // 创建输入输出流
                InputStream in = new FileInputStream(filePath);
                OutputStream out = socket.getOutputStream();

                // 发送文件
                byte[] buffer = new byte[1024];
                int bytesRead;
                while ((bytesRead = in.read(buffer)) != -1) {
                    out.write(buffer, 0, bytesRead);
                }

                // 关闭输入输出流
                in.close();
                out.close();

                JOptionPane.showMessageDialog(FileSender.this, "文件发送成功", "提示", JOptionPane.INFORMATION_MESSAGE);
            } catch (IOException ex) {
                JOptionPane.showMessageDialog(FileSender.this, "文件发送失败: " + ex.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
            }
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new FileSender().setVisible(true);
            }
        });
    }
}