java.txt

java实现ftp服务器的上传和下载 ftpclient

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.SocketException;

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPConnectionClosedException;
import org.apache.commons.net.ftp.FTPFiel;
import org.apache.commons.net.ftp.FTPReply;

public final class FtpTest{
public static final void main(String[] args){
int base = 0 ;
boolean storeFile = false,binaryTransfer = false,error = false;
String server,usrrname,password,remote,local;
FTPClient ftp;
server ="127.16.1.1";
username = "public";
password = "public";
remote = "ht/isic-0.05.tar";
remote = "d:\\isic-0.05.tar";

ftp = new FTPClient();
ftp.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));

//————新添加的————
FTPClient ftest = new FTPClient();
try{
ftest.connect(server);
ftest.login(username,password);
FTPFile[] files =ftest.listFiles();
System.out.println("输入FTP服务器目录下的文件或文件夹名字开始：\n");
for(int i =0;i<files.length;i++){
System.out.println(IsoToCh(files[i].getName()));
}
System.out.println("输入FTP服务器根目录下的文件或文件夹名字结束.\n");
}catch (SocketException e1){
//TODO自动生成catch块
e1.printStackTrace();
}catch (IOException e1){
//TODO自动生成catch块

e1.printStackTrace();
}
 





try {
int reply;
System.out.println("Connected to "+server+".");

//尝试连接后，需要检验返回代码以验证是否连接成功
reply = ftp.getReplyCode();
if(!FTPReply.isPositiveCompletion(reply)){
ftp.disconnect();
System.err.println("FTP server refused connection");
System.exit(1);
}
}catch (IOException e){
if (ftp.isConnected()){
try {
ftp.disconnect();
}catch(IOException f){


}
}
System.err.println("Could not connect to server.");
e.printStackTrace();
System.exit(1);
}
_main:try {
if (!ftp.login(username.password)){
ftp.logout();
error = true;
break _main;
}
System.out.println("Remote system is "+ftp.getSystemName());
if (binaryTransfer)
ftp.setFileType(FTP.BINARY_FILE_TYPE);
//默认的状态下使用passive mode,因为大多都在防火墙后面
ftp.enterLocalPassiveMode();

if (storeFile){
InputStream input;
input = new FileInputStream(local);
ftp.storeFile(remote,input);
input.close();



}else{
  OutputStream output;
output = new FileOutputStream(local);
ftp.retrieveFile(remote,output);
output.close();
}
ftp.logout();
}catch (FTPConnectionClosedException e){
error = true;
System.err.println("Server closed connection.");
e.printStackTrace();
}catch (IOException e){
error = true;
e.printStackTrace();
}finally {
if (ftp.isConnected()){
try{
ftp.disconnect();
}catch(IOException f){

//do nothing
}
}
}
System.exit(error ? 1:0);
}// end main
/**
*iso8859_1转换为gh2312编码
*@param param
*@return
*/
public static String IsoToCh(String param){
String temp = new String(param);
//这里都需要使用new 方法，否则WebSphere不兼容
try{temp = new String(temp.getBytes("iso8859_1"),"gb2312");
}catch (UnsupportedEncodingException e){
e.printStackTrace();
}
return temp;
}
}