Filename:  ftp.javaAuthor:   leetsing(elove)Create date: 2004-08-30Use:   connect to FTP server,then upload and download fileModify date: 2004-09-05 add to upload file     2004-09-13 add to download fileCopy right:  Magisky Media Technology Co.,Ltd.*******************************************************************************************************字串7*///import cz.dhl.io.*;//import cz.dhl.ftp.*;import sun.net.ftp.*;import sun.net.*;import java.applet.*;import java.io.*;import java.io.IOException;import java.util.StringTokenizer;import sun.net.ftp.FtpClient;import java.util.ArrayList;public class ftp  extends Applet{FtpClient aftp;DataOutputStream outputs ;TelnetInputStream ins;TelnetOutputStream outs;int ch;public String a;String hostname="";private String path = "/";public static void main(String[] args){  String hostname = "192.168.0.56";  int port = 2121;  String uid = "lee";  String pwd = "lee";  String RWFileDir = "D:\\smsftp\\";//文件目录  //连接ftp服务器  ftp ft = new  ftp();  ft.connect(RWFileDir,hostname,port,uid,pwd);字串3  //下载文件  if (ft.aftp != null){   try {    ft.getNameList(RWFileDir);   }catch(IOException e)   {    System.out.println("下载文件出错："+e);   }  }  //上传文件  if (ft.aftp != null){   String sdir = RWFileDir + "subunsubfromsp\\";   File fdir = new File(sdir);   String FileName = "";     for(int i=0;i    FileName = sdir + (fdir.list())[i];       ft.uploadFile(RWFileDir,FileName);   }   //System.out.println("成功上传的文件：");   //ft.showFileContents("subunsubfromsp\\");  }  //删除subunsubfromsp目录下已经上传的文件文件 字串6//  ft.deleFile(RWFileDir);  //断开服务器连接  ft.stop(RWFileDir);}public FtpClient connect(String RWFileDir,String hostname,int port,String uid,String pwd){  this.hostname = hostname;  System.out.println("正在连接"+hostname+"，请等待.....");  try{   aftp = new FtpClient(hostname,port);   aftp.login(uid,pwd);   aftp.binary();   //aftp.openPortDataConnection();   a = "连接主机:"+hostname+"成功!";   System.out.println(a);  }  catch(FtpLoginException e){   a="登陆主机:"+hostname+"失败!请检查用户名或密码是否正确："+e;   System.out.println(a);   //return false;  }  catch (IOException e){   a="连接主机:"+hostname+"失败!请检查端口是否正确："+e; 字串3   System.out.println(a);   //return false;  }  catch(SecurityException e)  {   a="无权限与主机:"+hostname+"连接!请检查是否有访问权限："+e;   System.out.println(a);   //return false;  }    log(RWFileDir,a);  return aftp;}public void stop(String RWFileDir){  String message = "";  try {   if(aftp!=null){    aftp.closeServer();    message = "与主机"+hostname+"连接已断开!";    System.out.println(message);    log(RWFileDir,message);   }  }  catch(IOException e)  {   message = "与主机"+hostname+"断开连接失败!"+e; 字串2   System.out.println(message);   log(RWFileDir,message);  }}public boolean downloadFile(String RWFileDir,String filepathname){  boolean result=true;  String message = "";  if (aftp != null)  {   System.out.println("正在下载文件"+filepathname+",请等待....");   String badfile = filepathname.substring(filepathname.length()-4,filepathname.length());   String badlog = filepathname.substring(filepathname.length()-7,filepathname.length());   String baddir = "";   if ((badfile.compareTo(".bad") != 0) && (badlog.compareTo(".badlog") != 0)){    baddir = "subunsubtosp\\";   }   else{    baddir = "bad\\";   } 字串9   String strdir = "subunsubtosp\\";   //System.out.println(RWFileDir + baddir + filepathname);   try{    //FtpClient fc=new FtpClient("192.168.0.56",2121);    //fc.login("lee","lee");    int ch;    File fi = new File(RWFileDir + baddir + filepathname);    //aftp.cd(strdir);    RandomAccessFile getFile = new RandomAccessFile(fi,"rw");    getFile.seek(0);    TelnetInputStream fget=aftp.get(strdir+filepathname);    DataInputStream puts = new DataInputStream(fget);    while ((ch = puts.read()) >= 0) {     getFile.write(ch);         }    //s.delete(); 字串1        fget.close();    getFile.close();    //fc.closeServer();    message = "下载"+filepathname+"文件到"+baddir +"目录成功!";    System.out.println(message);    log(RWFileDir,message);   }   catch(IOException e){    message = "下载"+filepathname+"文件到"+baddir +"目录失败!"+e;    System.out.println(message);    log(RWFileDir,message);    result = false ;   }  }  else{   result = false;  }  return result;}public boolean uploadFile(String RWFileDir,String filepathname){  boolean result=true; 字串8  String message = "";  if (aftp != null)  {   System.out.println("正在上传文件"+filepathname+",请等待....");   try{    String fg =new  String("\\subunsubfromsp\\");    int index = filepathname.lastIndexOf(fg);    String filename = filepathname.substring(index+1);    File localFile = new File(filepathname) ;          RandomAccessFile sendFile = new RandomAccessFile(filepathname,"r");    //    sendFile.seek(0);    //改名上传temp_    filename = filename.substring(0,15)+"temp_"+filename.substring(15,filename.length());    outs = aftp.put(filename);    outputs = new DataOutputStream(outs); 字串8    while (sendFile.getFilePointer() < sendFile.length() )    {     ch = sendFile.read();     outputs.write(ch);    }        rename(filename.substring(15,filename.length()),filename.substring(20,filename.length()));    outs.close();    sendFile.close();        message = "上传"+filepathname+"文件成功!";    System.out.println(message);    log(RWFileDir,message);   }   catch(IOException e){    message = "上传"+filepathname+"文件失败!"+e;    System.out.println(message);    log(RWFileDir,message);    result = false ;字串1   }  }  else{   result = false;  }  return result;}public void rename(String oldName,String newName){     //aftp.renameTo(oldName,newName);   File Old = new File(oldName); //oldName   File New = new File(newName); //newName   //aftp.renameTo(New);   //boolean Old.renameTo(File newName);   //System.out.println(Old);   //System.out.println(New);  }public static void deleFile(String RWFileDir) {//try {  //取得ReadFile目录下的txt文件  String sdir = RWFileDir + "subunsubfromsp\\";  File fdir = new File(sdir);  String FileName = "";  int j = fdir.list().length;    System.out.println(sdir+"目录下要删除的文件数："+fdir.list().length);字串6  File  file;  for(int i=0;i  {   //删除subunsubfromsp中的txt文件   FileName = RWFileDir + "subunsubfromsp\\" + (fdir.list())[0];   file = new  File(FileName);   file.delete();   System.out.println("已经成功删除"+FileName+"文件！");  }