sun.net.ftp.FtpClient 可以幫助我們進行一些簡單的ftp客戶端功能:下載、上傳文件,但如遇到創建目錄之類的就無能爲力了,我們只好利用第三方源碼。
1.文件的上傳
System.out.println("開始建立連接");
FtpClient ftpClient=new FtpClient(ip,Integer.valueOf(sock).intValue());
ftpClient.login(username,pwd);
ftpClient.binary();
System.out.println("成功建立連接開始上傳文件");
for(int i=0;i<filename.length;i++){
File f=new File(createfilepath+File.separator+filename[i]);
System.out.println("開始上傳文件:"+createfilepath+File.separator+filename[i]);
if(!f.exists())continue;
FileInputStream fis=new FileInputStream(f);
TelnetOutputStream tos=ftpClient.put(uppath+File.separator+f.getName());
byte[] bt=new byte[1024];
int len=0;
int lenTotal=0;
while((len=fis.read(bt))!=-1) {
lenTotal+=len;
tos.write(bt,0,len);
}
System.out.println("成功上傳文件:"+createfilepath+File.separator+filename[i]);
tos.close();
fis.close();
}
ftpClient.closeServer();
2.文件的下載
FtpClient ftpClient = new FtpClient(ip, Integer.valueOf(sock).intValue());
ftpClient.login(username, pwd);
BufferedReader reader = new BufferedReader(new InputStreamReader(ftpClient.nameList(downpath)));
ArrayList<String> nameList = new ArrayList<String>();
String s = "";
while( (s = reader.readLine()) != null){
if(s.indexOf(".xls")==-1 && s.indexOf(".dat")==-1)
nameList.add(s);
}
for(String filename : nameList){
File f = new File(filename);
if(!f.isDirectory()){
File fi = new File(downfilepath+File.separator+filename);
RandomAccessFile getFile = new RandomAccessFile(fi, "rw");
getFile.seek(0);
TelnetInputStream ins = ftpClient.get(downpath+File.separator+filename);
DataInputStream dins = new DataInputStream(ins);
String ss = "";
while((s = dins.readLine()) != null){
getFile.writeBytes(ss);
}
ins.close();
dins.close();
}
}
ftpClient.closeServer();