java实现sftp客户端上传文件夹的功能
使用的jar：
<dependencies> <dependency> <groupId>jsch</groupId> <artifactId>jsch</artifactId> <version>0.1.53</version> </dependency> </dependencies>
入口方法：
import java.util.HashMap; public class Sftp { public static void main(String[] args) { String helpMessage = "You need enter 5 args\n" + "1. target ip or domain name\n" + "2. target user\n" + "3. target password\n" + "4. source path\n" + "5. destination path\n"; if (args[0].equalsIgnoreCase("-help") || args[0].equalsIgnoreCase("-h")) { System.out.println(helpMessage); } if (args.length != 5) { System.out.println("The number of parameters entered is incorrect!\n" + helpMessage); return; } HashMap<String, String> map = new HashMap<>(8); map.put("ip",args[0]); map.put("user",args[1]); map.put("pwd",args[2]); map.put("sourcePath",args[3]); map.put("destinationPath",args[4]); map.put("port","22"); Login.login(map); } }
登录处理：
import java.io.Console; import java.util.Properties; import com.jcraft.jsch.JSch; import com.jcraft.jsch.Session; public class Login { public static void login(Properties properties) { String ip = properties.getProperty("ip"); String user = properties.getProperty("user"); String pwd = properties.getProperty("pwd"); String port = properties.getProperty("port"); String privateKeyPath = properties.getProperty("privateKeyPath"); String passphrase = properties.getProperty("passphrase"); String sourcePath = properties.getProperty("sourcePath"); String destinationPath = properties.getProperty("destinationPath"); if (ip != null && !ip.equals("") && user != null && !user.equals("") && port != null && !port.equals("") && sourcePath != null && !sourcePath.equals("") && destinationPath != null && !destinationPath.equals("")) { if (privateKeyPath != null && !privateKeyPath.equals("")) { sshSftp2(ip, user, Integer.parseInt(port), privateKeyPath, passphrase, sourcePath, destinationPath); } else if (pwd != null && !pwd.equals("")) { sshSftp(ip, user, pwd, Integer.parseInt(port), sourcePath, destinationPath); } else { Console console = System.console(); System.out.print("Enter password:"); char[] readPassword = console.readPassword(); sshSftp(ip, user, new String(readPassword), Integer.parseInt(port), sourcePath, destinationPath); } } else { System.out.println("请先设置配置文件"); } } /** * 密码方式登录 * * @param ip * @param user * @param psw * @param port * @param sPath * @param dPath */ public static void sshSftp(String ip, String user, String psw, int port, String sPath, String dPath) { System.out.println("password login"); Session session = null; JSch jsch = new JSch(); try { if (port <= 0) { // 连接服务器，采用默认端口 session = jsch.getSession(user, ip); } else { // 采用指定的端口连接服务器 session = jsch.getSession(user, ip, port); } // 如果服务器连接不上，则抛出异常 if (session == null) { throw new Exception("session is null"); } // 设置登陆主机的密码 session.setPassword(psw);// 设置密码 // 设置第一次登陆的时候提示，可选值：(ask | yes | no) session.setConfig("StrictHostKeyChecking", "no"); // 设置登陆超时时间 session.connect(300000); UpLoadFile.upLoadFile(session, sPath, dPath); } catch (Exception e) { e.printStackTrace(); } System.out.println("success"); } /** * 密匙方式登录 * * @param ip * @param user * @param port * @param privateKey * @param passphrase * @param sPath * @param dPath */ public static void sshSftp2(String ip, String user, int port, String privateKey, String passphrase, String sPath, String dPath) { System.out.println("privateKey login"); Session session = null; JSch jsch = new JSch(); try { // 设置密钥和密码 // 支持密钥的方式登陆，只需在jsch.getSession之前设置一下密钥的相关信息就可以了 if (privateKey != null && !"".equals(privateKey)) { if (passphrase != null && "".equals(passphrase)) { // 设置带口令的密钥 jsch.addIdentity(privateKey, passphrase); } else { // 设置不带口令的密钥 jsch.addIdentity(privateKey); } } if (port <= 0) { // 连接服务器，采用默认端口 session = jsch.getSession(user, ip); } else { // 采用指定的端口连接服务器 session = jsch.getSession(user, ip, port); } // 如果服务器连接不上，则抛出异常 if (session == null) { throw new Exception("session is null"); } // 设置第一次登陆的时候提示，可选值：(ask | yes | no) session.setConfig("StrictHostKeyChecking", "no"); // 设置登陆超时时间 session.connect(300000); UpLoadFile.upLoadFile(session, sPath, dPath); System.out.println("success"); } catch (Exception e) { e.printStackTrace(); } } }
文件上传的代码：
import java.io.*; import java.util.Vector; import com.jcraft.jsch.Channel; import com.jcraft.jsch.ChannelSftp; import com.jcraft.jsch.Session; import com.jcraft.jsch.SftpException; public class UpLoadFile { private static String split = "\\"; public static void upLoadFile(Session session, String sPath, String dPath) { Channel channel = null; try { channel = (Channel) session.openChannel("sftp"); channel.connect(10000000); ChannelSftp sftp = (ChannelSftp) channel; if (isDirExist(sftp, dPath)) { String createPath = dPath + sPath.substring(sPath.lastIndexOf(split) + split.length()); if (isDirExist(sftp, createPath)) { deleteSFTP(sftp, createPath); } } else { createDir(sftp, dPath); } sftp.cd(dPath); File file = new File(sPath); copyFile(sftp, file, sftp.pwd()); } catch (Exception e) { e.printStackTrace(); } finally { session.disconnect(); channel.disconnect(); } } public static void copyFile(ChannelSftp sftp, File file, String pwd) { if (file.isDirectory()) { File[] list = file.listFiles(); try { try { String fileName = file.getName(); sftp.cd(pwd); System.out.println("正在创建目录:" + sftp.pwd() + "/" + fileName); sftp.mkdir(fileName); System.out.println("目录创建成功:" + sftp.pwd() + "/" + fileName); } catch (Exception e) { // TODO: handle exception } pwd = pwd + "/" + file.getName(); try { sftp.cd(file.getName()); } catch (SftpException e) { // TODO: handle exception e.printStackTrace(); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } for (int i = 0; i < list.length; i++) { copyFile(sftp, list[i], pwd); } } else { try { sftp.cd(pwd); } catch (SftpException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } System.out.println("正在复制文件:" + file.getAbsolutePath()); InputStream instream = null; OutputStream outstream = null; try { outstream = sftp.put(file.getName()); instream = new FileInputStream(file); byte b[] = new byte[1024]; int n; try { while ((n = instream.read(b)) != -1) { outstream.write(b, 0, n); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (SftpException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { try { outstream.flush(); outstream.close(); instream.close(); } catch (Exception e2) { // TODO: handle exception e2.printStackTrace(); } } } } /** * 创建目录 * * @param createPath * @return */ public static void createDir(ChannelSftp sftp, String createPath) { try { if (isDirExist(createpath)) { sftp.cd(createpath); } String pathArry[] = createpath.split("/"); StringBuffer filePath = new StringBuffer("/"); for (String path : pathArry) { if (path.equals("")) { continue; } filePath.append(path + "/"); if (isDirExist(filePath.toString())) { sftp.cd(filePath.toString()); } else { // 建立目录 sftp.mkdir(filePath.toString()); // 进入并设置为当前目录 sftp.cd(filePath.toString()); } } } catch (SftpException e) { e.printStackTrace(); } } /** * 删除stfp文件 * * @param directory：要删除文件所在目录 */ public static void deleteSFTP(ChannelSftp sftp, String directory) { try { if (isDirExist(directory)) { Vector<ChannelSftp.LsEntry> vector = sftp.ls(directory); if (vector.size() == 1) { // 文件，直接删除 sftp.rm(directory); } else if (vector.size() == 2) { // 空文件夹，直接删除 sftp.rmdir(directory); } else { String fileName = ""; // 删除文件夹下所有文件 for (ChannelSftp.LsEntry en : vector) { fileName = en.getFilename(); if (".".equals(fileName) || "..".equals(fileName)) { continue; } else { deleteSFTP(sftp,directory + "/" + fileName); } } // 删除文件夹 sftp.rmdir(directory); } } } catch (Exception e) { e.printStackTrace(); } } /** * 判断目录是否存在 * * @param directory * @return */ public static boolean isDirExist(String directory) { try { Vector<?> vector = sftp.ls(directory); return (null != vector); } catch (Exception e) { return false; } } }
参考：
https://www.cnblogs.com/zuo-java/p/5913295.html
https://www.cnblogs.com/future-eye/p/8194544.html
