java FTP1

package com.sand.utils;import java.io.IOException;import java.net.SocketException;import org.apache.commons.net.ftp.FTPClient;import org.apache.commons.net.ftp.FTPClientConfig;public class FTPUtils {private FTPClient ftpClient;private String hostname;private int port;private String username;private String password;private String remoteDir;public FTPUtils(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_UNIX));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 FTPClient getFTPClient() throws Exception {FTPClient ftp = new FTPClient();ftp.setDefaultPort(21);//ftp.connect("172.28.250.58");ftp.connect("172.28.250.69");ftp.login("user", "password");return ftp;}}