ftp是一種文件傳輸協議,讓客戶端和服務端能夠互相傳遞文件,圖片等數據;方便快捷;sftp是ssh file transfer protocol縮寫,也是一種文件傳輸協議.sftp比ftp安全的多,但傳輸效率要低的多

搭建:ftp可以搜索網上教程,很多,在此不過多贅述

創建完成后,通過瀏覽器就可以訪問到內容了;

sftp用freesshd搭建(記得freesshd的安裝路徑不要有中文,否則各種報錯);這個也可以自行百度,解決方法很多;

代碼如下:import java.io.*;import java.net.SocketException; import java.util.ArrayList;import org.apache.commons.net.ftp.FTP;import org.apache.commons.net.ftp.FTPClient;import org.apache.commons.net.ftp.FTPClientConfig;import org.apache.commons.net.ftp.FTPReply;public class FTPClientTest{ private static String userName; // FTP 登錄用戶名 private static String password; // FTP 登錄密碼 private static String ip;// FTP 服務器地址IP地址 private static int port; // FTP 端口 //構造函數初始化 public FTPClientTest(String userName,String password,String ip,int port){ this.userName=userName; this.password=password; this.ip=ip; this.port=port; } public static String getUserName(){ return userName;} public static void setUserName(String userName) {FTPClientTest.userName = userName; } public static String getPassword() {return password;} public static void setPassword(String password){FTPClientTest.password = password;} public static String getIp() { return ip; } public static void setIp(String ip){FTPClientTest.ip = ip;} public static int getPort() {return port; } public static void setPort(int port) {FTPClientTest.port = port;} private static FTPClient ftpClient = null; // FTP 客戶端代理/** * 連接到服務器 * @return true 連接服務器成功，false 連接服務器失敗 */ public boolean connectServer() { System.out.println('進行連接'); boolean flag = true; if (ftpClient == null) { int reply; try { System.out.println('初始化連接'); ftpClient = new FTPClient(); String LOCAL_CHARSET = 'GBK'; System.out.println('設置IP和端口'); ftpClient.connect(ip, port); System.out.println('設置密碼'); ftpClient.login(userName, password); System.out.println('進行連接'); reply = ftpClient.getReplyCode(); ftpClient.setDataTimeout(120000); System.out.println('設置編碼操作方式'); if (FTPReply.isPositiveCompletion(ftpClient.sendCommand('OPTS UTF8', 'ON'))) // 開啟服務器對UTF-8的支持，如果服務器支持就用UTF-8編碼，否則就使用本地編碼（GBK）. { LOCAL_CHARSET = 'UTF-8'; } System.out.println('設置編碼操作方式1'); ftpClient.setControlEncoding(LOCAL_CHARSET); System.out.println('是否連接成功'); if (!FTPReply.isPositiveCompletion(reply)) { ftpClient.disconnect(); System.out.println('FTP 服務拒絕連接！'); flag = false; } } catch (SocketException e) { flag = false; e.printStackTrace(); System.out.println('登錄ftp服務器 ' + ip + ' 失敗,連接超時！'); } catch (IOException e) { flag = false; e.printStackTrace(); System.out.println('登錄ftp服務器 ' + ip + ' 失敗，FTP服務器無法打開！'); } catch (Exception e) { flag = false; e.printStackTrace(); // System.out.println('登錄ftp服務器 ' + ip + ' 失敗，FTP服務器無法打開！'); } } return flag; }/** * 上傳文件 * * @param remoteFile 遠程文件路徑,支持多級目錄嵌套 需要保證路徑已經存在 并切包含文件重命名 * @param localFile 本地文件名稱，絕對路徑 * */ public boolean uploadFile(String remoteFile1, File localFile) { boolean flag = false;try{ InputStream in = new FileInputStream(localFile); String remote = new String(remoteFile1.getBytes('UTF-8'), 'iso-8859-1'); if (ftpClient.storeFile(remote, in)) {flag = true;System.out.println(localFile.getAbsolutePath() + '上傳文件成功！'); } else {System.out.println(localFile.getAbsolutePath() + '上傳文件失敗！'); } in.close();}catch (FileNotFoundException e){ // TODO Auto-generated catch block e.printStackTrace();}catch (UnsupportedEncodingException e){ // TODO Auto-generated catch block e.printStackTrace();}catch (IOException e){ // TODO Auto-generated catch block e.printStackTrace();}return flag; }/** * 上傳單個文件 * * @param local 本地文件名稱，絕對路徑 * @param remote 遠程文件路徑,支持多級目錄嵌套 * @return */ public boolean uploadFile(String local, String remote) {boolean flag = true;String remoteFileName = remote;if (remote.contains('/')){ remoteFileName = remote.substring(remote.lastIndexOf('/') + 1); // 創建服務器遠程目錄結構，創建失敗直接返回 if (!CreateDirecroty(remote)) {return false; }}File f = new File(local);if (!uploadFile(remoteFileName, f)){ flag = false;}return flag; }/** * 上傳文件夾內的所有文件 * * * @param filename 本地文件夾絕對路徑 只能上傳文件，子文件夾無法上傳 * @param uploadpath 上傳到FTP的路徑,形式為/或/dir1/dir2/../ * @return true 上傳成功，false 上傳失敗 * @throws IOException */ public ArrayList<String> uploadManyFile(String filename, String uploadpath) {boolean flag = true;ArrayList<String> l = new ArrayList<String>();StringBuffer strBuf = new StringBuffer();int n = 0; // 上傳失敗的文件個數int m = 0; // 上傳成功的文件個數try{ ftpClient.setFileType(FTP.BINARY_FILE_TYPE); ftpClient.enterLocalPassiveMode(); ftpClient.setFileTransferMode(FTP.STREAM_TRANSFER_MODE); ftpClient.changeWorkingDirectory('/'); File file = new File(filename); File fileList[] = file.listFiles();for (File upfile : fileList) {if (!upfile.isDirectory()){ String local = upfile.getCanonicalPath().replaceAll('', '/'); String temp = upfile.getCanonicalPath(); String a = temp.replace(filename + '', ''); String remote = uploadpath.replaceAll('', '/') + a; flag = uploadFile(local, remote); ftpClient.changeWorkingDirectory('/');}if (!flag){ n++; strBuf.append(upfile.getName() + ','); System.out.println('文件［' + upfile.getName() + '］上傳失敗');}else{ m++;} } l.add('失敗個數' + n); l.add('成功個數' + m); l.add(strBuf.toString());}catch (NullPointerException e){ e.printStackTrace(); System.out.println('本地文件上傳失敗！找不到上傳文件！' + e);}catch (Exception e){ e.printStackTrace(); System.out.println('本地文件上傳失敗！' + e);}return l; } /** * 下載文件 * * @param remoteFileName --服務器上的文件名 * @param localFileName--本地文件名 * @return true 下載成功，false 下載失敗 */ public boolean loadFile(String remoteFileName, String localFileName) {boolean flag = true;// 下載文件BufferedOutputStream buffOut = null;try{ buffOut = new BufferedOutputStream(new FileOutputStream(localFileName)); flag = ftpClient.retrieveFile(new String(remoteFileName.getBytes('UTF-8'), 'iso-8859-1'), buffOut);}catch (Exception e){ e.printStackTrace(); System.out.println('本地文件下載失敗！' + e);}finally{ try {if (buffOut != null) buffOut.close(); } catch (Exception e) {e.printStackTrace(); }}return flag; }/** * 刪除一個文件 */ public boolean deleteFile(String filename) {boolean flag = true;try{ flag = ftpClient.deleteFile(new String(filename.getBytes('UTF-8'), 'iso-8859-1')); if (flag) {System.out.println('刪除文件' + filename + '成功！'); } else {System.out.println('刪除文件' + filename + '成功！'); }}catch (IOException ioe){ ioe.printStackTrace();}return flag; }/** * 刪除空目錄 */ public void deleteEmptyDirectory(String pathname) {try{ ftpClient.removeDirectory(new String(pathname.getBytes('UTF-8'), 'iso-8859-1'));}catch (IOException ioe){ ioe.printStackTrace();} }/** * 列出Ftp服務器上的所有文件和目錄 */ public String[] listRemoteAllFiles() { try{ String[] names = ftpClient.listNames();for (int i = 0; i < names.length; i++) {System.out.println(names[i]); } return names;}catch (Exception e){ e.printStackTrace();}return null; }/** * 關閉連接 */ public void closeConnect() { try{ if (ftpClient != null) {ftpClient.logout();ftpClient.disconnect();ftpClient=null; }}catch (Exception e){ e.printStackTrace();} }/** * 設置傳輸文件的類型[文本文件或者二進制文件] 1是文本文件 其余 二進制文件 * * @param fileType--BINARY_FILE_TYPE(二進制文件)、ASCII_FILE_TYPE(文本文件) * */ public void setFileType(int fileType1) { try{ int a = FTP.BINARY_FILE_TYPE; if (fileType1 == 1) {a = FTP.ASCII_FILE_TYPE; } ftpClient.setFileType(a);}catch (Exception e){ e.printStackTrace();} }/** * 進入到服務器的某個目錄下 * * @param directory */ public boolean changeWorkingDirectory(String directory) {boolean flag = true;try{ flag = ftpClient.changeWorkingDirectory(directory); if (flag) {System.out.println('進入文件夾' + directory + ' 成功！'); } else {System.out.println('進入文件夾' + directory + ' 失敗！'); }}catch (IOException ioe){ ioe.printStackTrace();}return flag; }/** * 返回到上一層目錄 */ public void changeToParentDirectory() { try { ftpClient.changeToParentDirectory(); } catch (IOException ioe) { ioe.printStackTrace(); } }/** * 重命名文件 * * @param oldFileName --原文件名 * @param newFileName --新文件名 */ public void renameFile(String oldFileName, String newFileName) {try{ System.out.println(oldFileName); System.out.println(newFileName); ftpClient.rename(new String(oldFileName.getBytes('UTF-8'), 'iso-8859-1'), new String(newFileName.getBytes('UTF-8'), 'iso-8859-1'));}catch (IOException ioe){ ioe.printStackTrace();}catch(Exception e){ e.printStackTrace();} }/** * 設置FTP客服端的配置--一般可以不設置 * * @return ftpConfig */ @SuppressWarnings('unused')private FTPClientConfig getFtpConfig() { FTPClientConfig ftpConfig = new FTPClientConfig(FTPClientConfig.SYST_UNIX); ftpConfig.setServerLanguageCode(FTP.DEFAULT_CONTROL_ENCODING); return ftpConfig; }/** * 轉碼[ISO-8859-1 -> GBK] 不同的平臺需要不同的轉碼 * * @param obj * @return '' */ @SuppressWarnings('unused')private String iso8859togbk(Object obj) {try{ if (obj == null)return ''; elsereturn new String(obj.toString().getBytes('iso-8859-1'), 'GBK');}catch (Exception e){ return '';} }/** * 在服務器上創建一個文件夾 * * @param dir 文件夾名稱，不能含有特殊字符，如 、/ 、: 、* 、?、 '、 <、>... */ public boolean makeDirectory(String dir) {boolean flag = true;try{ flag = ftpClient.makeDirectory(dir); if (flag) {System.out.println('創建文件夾' + dir + ' 成功！'); } else {System.out.println('創建文件夾' + dir + ' 失敗！'); }}catch (Exception e){ e.printStackTrace();}return flag; }/** * 遞歸創建遠程服務器目錄 * * @param remote 遠程服務器文件絕對路徑 路徑： /Draw1/Point1/GUID1/a.bmp 或者/Draw1/Point1/GUID1/ 最后一級文件夾必須有/否則最后一級文件夾創建不成功 * * @return 目錄創建是否成功 * @throws IOException */ public boolean CreateDirecroty(String remote) {boolean success = true;try{ String directory = remote.substring(0, remote.lastIndexOf('/') + 1); // 如果遠程目錄不存在，則遞歸創建遠程服務器目錄 if (!directory.equalsIgnoreCase('/') && !changeWorkingDirectory(new String(directory))) {int start = 0;int end = 0;if (directory.startsWith('/')){ start = 1;}else{ start = 0;}end = directory.indexOf('/', start);while (true){ String subDirectory; subDirectory = new String(remote.substring(start, end).getBytes('GBK'), 'iso-8859-1');if (!changeWorkingDirectory(subDirectory)) {if (makeDirectory(subDirectory)){ changeWorkingDirectory(subDirectory);}else{ System.out.println('創建目錄[' + subDirectory + ']失敗'); System.out.println('創建目錄[' + subDirectory + ']失敗'); success = false; return success;} } start = end + 1; end = directory.indexOf('/', start); // 檢查所有目錄是否創建完畢 if (end <= start) {break; }} }}catch (UnsupportedEncodingException e){ // TODO Auto-generated catch block e.printStackTrace();}return success; }}ftp測試代碼如下:

public class test {public static void main(String[] args) {FTPClientTest ftp=new FTPClientTest('user', '548', '168.125.256.22', 21);boolean b=ftp.connectServer();System.out.println(b);System.out.println(ftp.listRemoteAllFiles());System.out.println(ftp.uploadFile('F:/home/b.txt', '/c.txt'));System.out.println(ftp.loadFile('/a.txt', 'F:/home/b.txt'));ftp.closeConnect();}}

輸出結果如下:

成功了;

sftp搭建完成后,也測試下,至于搭建過程,自行百度好啦

看到沒,連接成功了;我用我的電腦模擬的;