frame1.java

可以匿名登陆FTP,只要填写密码就可以,我找了很就的

package ftpclient;
import java.awt.*;
import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.Dimension;
import com.borland.jb.util.*;
import java.beans.*;
import java.io.*;
import sun.net.TelnetInputStream;
import sun.net.ftp.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import com.borland.jbcl.layout.XYLayout;
import com.borland.jbcl.layout.*;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JList;
import java.awt.List;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.Object;
import javax.swing.tree.DefaultTreeCellEditor;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.JCheckBox;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Frame1 extends JFrame {
    JTextArea jTextArea1 = new JTextArea();
    JPanel contentPane;
    FtpClient ftp = null;
    JLabel statusLabe1 = new JLabel();
    JLabel jLabel1 = new JLabel();
    JLabel jLabel2 = new JLabel();
    XYLayout xYLayout1 = new XYLayout();
    JLabel jLabel3 = new JLabel();
    JLabel jLabel4 = new JLabel();
    JTextField jTextField1 = new JTextField();
    JTextField jTextField2 = new JTextField();
    JTextField jTextField3 = new JTextField();
    JTextField jTextField4 = new JTextField();
    JButton jButton1 = new JButton();
    JButton jButton2 = new JButton();
    List list1 = new List();

    public Frame1() {
        try {
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    /**
     * Component initialization.
     *
     * @throws java.lang.Exception
     */
    private void jbInit() throws Exception {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(xYLayout1);
        setSize(new Dimension(400, 300));
        setTitle("Frame Title");
        jLabel1.setText("用户名");
        jLabel2.setText("服务器地址");
        jLabel3.setText("密码");
        jLabel4.setText("端口号");
        jButton1.setText("连接到服务器");
        jButton1.addActionListener(new Frame1_jButton1_actionAdapter(this));
        jButton2.setText("断开服务器连接");
        list1.addActionListener(new Frame1_list1_actionAdapter(this));

        contentPane.add(jButton1, new XYConstraints(26, 129, 155, 22));
        contentPane.add(jButton2, new XYConstraints(28, 159, 152, 22));
        contentPane.add(jLabel1, new XYConstraints(11, 29, 50, 24));
        contentPane.add(jTextField1, new XYConstraints(98, 3, 121, -1));
        contentPane.add(jTextField2, new XYConstraints(97, 34, 122, -1));
        contentPane.add(jTextField3, new XYConstraints(97, 61, 122, 22));
        contentPane.add(jTextField4, new XYConstraints(98, 88, 121, 27));
        contentPane.add(jLabel3, new XYConstraints(11, 58, 49, 22));
        contentPane.add(jLabel4, new XYConstraints(12, 90, 50, 26));
        contentPane.add(jLabel2, new XYConstraints(8, 3, 87, 21));
        contentPane.add(list1, new XYConstraints(227, 4, 156, 181));
    }

    public void jButton1_actionPerformed(ActionEvent e) {
        int ch;

        String hostname = jTextField1.getText();
        try {
            if (ftp != null)
                ftp.closeServer();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        try {
            statusLabe1.setText("正在连接");
            ftp = new FtpClient(hostname);
            ftp.login(jTextField2.getText(), jTextField3.getText());
            ftp.binary();

        } catch (FtpLoginException ex) {
            statusLabe1.setText("无权限与主机：" + hostname + "连接！");

        } catch (IOException ex) {
            statusLabe1.setText("用户或密码可能不对" + hostname + "连接");
        }
        statusLabe1.setText("连接主机" + hostname + "成功");
        ReloadList();
    }

    public void list1_actionPerformed(ActionEvent e) {
        StringBuffer buf = new StringBuffer();
        if (ftp == null)
            list1.removeAll();
        if (list1.getRows() > 0) {
            String dir = list1.getSelectedItem().trim();
            try {
                ftp.cd(dir);
                ReloadList();
                jTextArea1.append("进入目录：");
                jTextArea1.append(dir);
                jTextArea1.append("\n");
            } catch (IOException ex) {
                jTextArea1.append(dir);
                jTextArea1.append(":是一个文件\n");
            }
        }
    }


    private void ReloadList() {
        StringBuffer buf = new StringBuffer();
        int ch;
        list1.removeAll();
        try {
            TelnetInputStream t = ftp.list();
            t.setStickyCRLF(true);
            while ((ch = t.read()) >= 0) {
                if (ch == '\n') {
                    list1.add(getDIR(buf.toString()));
                    buf.setLength(0);
                } else {
                    buf.append((char) ch);
                }
            }
            t.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        list1.validate();
    }

    public String getDIR(String path) {
        String DIRName;
        int ch;
        int begin = 55;
        DIRName= path.substring(begin).trim();
        return DIRName;

    }

        class Frame1_list1_actionAdapter implements ActionListener {
            private Frame1 adaptee;
            Frame1_list1_actionAdapter(Frame1 adaptee) {
                this.adaptee = adaptee;
            }

            public void actionPerformed(ActionEvent e) {
                adaptee.list1_actionPerformed(e);
            }
        }


        class Frame1_jButton1_actionAdapter implements ActionListener {
            private Frame1 adaptee;
            Frame1_jButton1_actionAdapter(Frame1 adaptee) {
                this.adaptee = adaptee;
            }

            public void actionPerformed(ActionEvent e) {
                adaptee.jButton1_actionPerformed(e);
            }
        }
    }