Commons FTP范例

public class FtpUtil {
	private FTPClient ftpClient;
	private String hostname;
	private  int port;
	private String username;
	private String password;
	private String remoteDir;
	
	public FtpUtil(String hostname, int port, String username, String password, String remoteDir){
		this.hostname = hostname;
		this.port = port;
		this.username = username;
		this.password = password;
		this.remoteDir = remoteDir;
		
		ftpClient = getClient();
		
		this.login();
		this.changeDir();
		this.setFileType(FTPClient.BINARY_FILE_TYPE);
	}
	
	private FTPClient getClient(){
		FTPClient ftpClient = new FTPClient();
		
		ftpClient.setDefaultPort(port);
		ftpClient.configure(getClientConfig(FTPClientConfig.SYST_NT));
		ftpClient.setControlEncoding("GBK");
		
		return ftpClient;
	}
	
	private static FTPClientConfig getClientConfig(String sysType){
		FTPClientConfig config = new FTPClientConfig(sysType);
		config.setRecentDateFormatStr("yyyy-MM-dd HH:mm");
		return config;
	}
	
	/**
	 * 登录FTP服务器
	 */
	private void login(){
		try {
			ftpClient.connect(hostname);
			ftpClient.login(username, password);
			
		}catch(SocketException e){
			e.printStackTrace();
		}catch(IOException e){
			e.printStackTrace();
		}
	}
	
	/**
	 * 关闭FTP服务器
	 */
	public void logout(){
		try{
			ftpClient.logout();
			ftpClient.disconnect();
			
		}catch(IOException e){
			e.printStackTrace();
		}
	}
	
	/**
	 * 变更工作目录
	 */
	private void changeDir(){
		try{
			ftpClient.changeWorkingDirectory(remoteDir);
		}catch(IOException e){
			e.printStackTrace();
		}
	}
	
	private void setFileType(int fileType){
		try{
			ftpClient.setFileType(fileType);
		}catch(IOException e){
			e.printStackTrace();
		}
	}
	
	public String[] listFiles(String regEx){
		String[] names;
		try{
			names = ftpClient.listNames(regEx);
			if(names == null) return new String[0];
			
			return names;
		}catch(IOException e){
			e.printStackTrace();
		}
		return new String[0];
	}
	
	public static void main(String[] args) {
		try {
			FtpUtil ftpUtil = new FtpUtil(host, port, username, password, basePath);
			
			String[] filesList = ftpUtil.listFiles("mps_simsales_100000_*_qy_000_00");
			if(filesList != null){
				System.out.println(filesList.length);
				for(int i=0;i<filesList.length;i++){
					System.out.println(filesList[i]);
				}
			}
			
			ftpUtil.logout();
			
		}catch(Exception e){
			e.printStackTrace();
		}
	}
	
}