import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
public class FtpApche {
private static FTPClient ftpClient = new FTPClient();
private static String encoding = System.getProperty("file.encoding");
/**
* Description: 從FTP服務器下載文件
* 
* @Version1.0
* @param url
* FTP服務器hostname
* @param port
* FTP服務器端口
* @param username
* FTP登錄賬號
* @param password
* FTP登錄密碼
* @param remotePath
* FTP服務器上的相對路徑
* @param fileName
* 要下載的文件名
* @param localPath
* 下載后保存到本地的路徑
* @return
*/
public static boolean downFile(String url, int port, String username,
String password, String remotePath, String fileName,
String localPath) {
boolean result = false;
try {
int reply;
ftpClient.setControlEncoding(encoding);
/*
* 為了上傳和下載中文文件，有些地方建議使用以下兩句代替
* new String(remotePath.getBytes(encoding),"iso-8859-1")轉碼。
* 經過測試，通不過。
*/
// FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);
// conf.setServerLanguageCode("zh");
ftpClient.connect(url, port);
// 如果采用默認端口，可以使用ftp.connect(url)的方式直接連接FTP服務器
ftpClient.login(username, password);// 登錄
// 設置文件傳輸類型為二進制
ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
// 獲取ftp登錄應答代碼
reply = ftpClient.getReplyCode();
// 驗證是否登陸成功
if (!FTPReply.isPositiveCompletion(reply)) {
ftpClient.disconnect();
System.err.println("FTP server refused connection.");
return result;
}
// 轉移到FTP服務器目錄至指定的目錄下
ftpClient.changeWorkingDirectory(new String(remotePath.getBytes(encoding),"iso-8859-1"));
// 獲取文件列表
FTPFile[] fs = ftpClient.listFiles();
for (FTPFile ff : fs) {
if (ff.getName().equals(fileName)) {
File localFile = new File(localPath + "/" + ff.getName());
OutputStream is = new FileOutputStream(localFile);
ftpClient.retrieveFile(ff.getName(), is);
is.close();
}
}
ftpClient.logout();
result = true;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ftpClient.isConnected()) {
try {
ftpClient.disconnect();
} catch (IOException ioe) {
}
}
}
return result;
}
/**
* 將FTP服務器上文件下載到本地
* 
*/
public void testDownFile() {
try {
boolean flag = downFile("10.0.0.102", 21, "admin",
"123456", "/", "ip.txt", "E:/");
System.out.println(flag);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
FtpApche fa = new FtpApche();
fa.testDownFile();
}
}

import java.io.File;
import java.io.FileInputStream;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;
public class FTPTest_05 {
private FTPClient ftp;
/** 
* 
* @param path 上傳到ftp服務器哪個路徑下 
* @param addr 地址 
* @param port 端口號 
* @param username 用戶名 
* @param password 密碼 
* @return 
* @throws Exception 
*/ 
private boolean connect(String path,String addr,int port,String username,String password) throws Exception {
boolean result = false;
ftp = new FTPClient();
int reply;
ftp.connect(addr,port);
ftp.login(username,password);
ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
return result;
}
ftp.changeWorkingDirectory(path);
result = true;
return result;
}
/** 
* 
* @param file 上傳的文件或文件夾 
* @throws Exception 
*/ 
private void upload(File file) throws Exception{
if(file.isDirectory()){
ftp.makeDirectory(file.getName());
ftp.changeWorkingDirectory(file.getName());
String[] files = file.list();
for (int i = 0;i < files.length;i++) {
File file1 = new File(file.getPath()+"\\"+files[i] );
if(file1.isDirectory()){
upload(file1);
ftp.changeToParentDirectory();
}else{
File file2 = new File(file.getPath()+"\\"+files[i]);
FileInputStream input = new FileInputStream(file2);
ftp.storeFile(file2.getName(), input);
input.close();
}
}
}else{
File file2 = new File(file.getPath());
FileInputStream input = new FileInputStream(file2);
ftp.storeFile(file2.getName(), input);
input.close();
}
}
public static void main(String[] args) throws Exception{
FTPTest_05 t = new FTPTest_05();
boolean connFlag = t.connect("/", "10.0.0.105", 21, "ls", "123456");
System.out.println("connFlag : " + connFlag);
File file = new File("D:\\test02");//本機被傳文件的地址
System.out.println("file : " + file);
t.upload(file);
System.out.println("upload : " + "ok");
}
}