注册
个人空间
JAVA源代码如下：
package jdeveloper.ftp;import sun.net.ftp.*;import sun.net.*;import java.awt.*;import java.awt.event.*;import java.applet.*;import java.io.*;public class FtpApplet extends Applet{ FtpClient aftp; DataOutputStream outputs ; TelnetInputStream ins; TelnetOutputStream outs; TextArea lsArea; Label LblPrompt; Button BtnConn; Button BtnClose; TextField TxtUID; TextField TxtPWD; TextField TxtHost; int ch; public String a="没有连接主机"; String hostname=""; public void init () { setBackground(Color.white); setLayout(new GridBagLayout()); GridBagConstraints GBC = new GridBagConstraints(); LblPrompt = new Label("没有连接主机"); LblPrompt.setAlignment(Label.LEFT); BtnConn = new Button("连接"); BtnClose = new Button("断开"); BtnClose.enable(false); TxtUID = new TextField("",15); TxtPWD = new TextField("",15); TxtPWD.setEchoCharacter('*'); TxtHost = new TextField("",20); Label LblUID = new Label("User ID:"); Label LblPWD = new Label("PWD:"); Label LblHost = new Label("Host:"); lsArea = new TextArea(30,80); lsArea.setEditable(false); GBC.gridwidth= GridBagConstraints.REMAINDER; GBC.fill = GridBagConstraints.HORIZONTAL; ((GridBagLayout)getLayout()).setConstraints(LblPrompt,GBC); add(LblPrompt); GBC.gridwidth=1; ((GridBagLayout)getLayout()).setConstraints(LblHost,GBC); add(LblHost); GBC.gridwidth=GridBagConstraints.REMAINDER; ((GridBagLayout)getLayout()).setConstraints(TxtHost,GBC); add(TxtHost); GBC.gridwidth=1; ((GridBagLayout)getLayout()).setConstraints(LblUID,GBC); add(LblUID); GBC.gridwidth=1; ((GridBagLayout)getLayout()).setConstraints(TxtUID,GBC); add(TxtUID); GBC.gridwidth=1; ((GridBagLayout)getLayout()).setConstraints(LblPWD,GBC); add(LblPWD); GBC.gridwidth=1; ((GridBagLayout)getLayout()).setConstraints(TxtPWD,GBC); add(TxtPWD); GBC.gridwidth=1; GBC.weightx=2; ((GridBagLayout)getLayout()).setConstraints(BtnConn,GBC); add(BtnConn); GBC.gridwidth=GridBagConstraints.REMAINDER; ((GridBagLayout)getLayout()).setConstraints(BtnClose,GBC); add(BtnClose); GBC.gridwidth=GridBagConstraints.REMAINDER; GBC.fill = GridBagConstraints.HORIZONTAL; ((GridBagLayout)getLayout()).setConstraints(lsArea,GBC); add(lsArea); } public boolean connect(String hostname, String uid,String pwd) { this.hostname = hostname; LblPrompt.setText("正在连接，请等待....."); try{ aftp =new FtpClient(hostname); aftp.login(uid,pwd); aftp.binary(); showFileContents(); } catch(FtpLoginException e){ a="无权限与主机:"+hostname+"连接!"; LblPrompt.setText(a); return false; } catch (IOException e){ a="连接主机:"+hostname+"失败!"; LblPrompt.setText(a); return false; } catch(SecurityException e) { a="无权限与主机:"+hostname+"连接!"; LblPrompt.setText(a); return false; } LblPrompt.setText("连接主机:"+hostname+"成功!"); return true; } public void stop() { try { aftp.closeServer(); } catch(IOException e) { } } public void paint(Graphics g){ } public boolean action(Event evt,Object obj) { if (evt.target == BtnConn) { LblPrompt.setText("正在连接，请等待....."); if (connect(TxtHost.getText(),TxtUID.getText(),TxtPWD.getText())) { BtnConn.setEnabled(false); BtnClose.setEnabled(true); } return true; } if (evt.target == BtnClose) { stop(); BtnConn.enable(true); BtnClose.enable(false); LblPrompt.setText("与主机"+hostname+"连接已断开!"); return true; } return super.action(evt,obj); } public boolean sendFile(String filepathname){ boolean result=true; if (aftp != null) { LblPrompt.setText("正在粘贴文件,请耐心等待...."); String contentperline; try{ a="粘贴成功!"; String fg =new String("\\"); int index = filepathname.lastIndexOf(fg); String filename = filepathname.substring(index+1); File localFile ; localFile = new File(filepathname) ; RandomAccessFile sendFile = new RandomAccessFile(filepathname,"r"); // sendFile.seek(0); outs = aftp.put(filename); outputs = new DataOutputStream(outs); while (sendFile.getFilePointer()
| 论坛热门帖子: | [lch203] 写得蛮好的linux学习笔记(10-21) [黑马制造] 学习java的30个目标(10-19) [笑傲股林] 做测试半年了，有点迷茫，应该再学些什么提高自己的测试水平和测试能力呢？(10-19) [udp8589] 大家用google的来吱一声? 用百度的~~也来报道下?(10-18) [沂偌掳兆] 本人总结的一些认为C++比较经典的书籍，希望对大家有用(10-18) |
| TAG标签: | 功能 简单 实现 源码 new GBC String GridBagLayout 连接 |
