关于sftp，服务器架设，上传下载

服务器架设，推荐使用FreeSShd软件，简单易用，根据指示来配置即可java代码来链接sftp服务器上传下载文件，例子如下package hygd.grjz.exchange.utils;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.Properties;import java.util.Vector;import com.jcraft.jsch.Channel;import com.jcraft.jsch.ChannelSftp;import com.jcraft.jsch.JSch;import com.jcraft.jsch.Session;import com.jcraft.jsch.SftpException;public class SFTPUtil {/*** 连接sftp服务器** @param host* 主机* @param port* 端口* @param username* 用户名* @param password* 密码* @return*/public ChannelSftp connect(String host, int port, String username, String password) {ChannelSftp sftp = null;try {JSch jsch = new JSch();jsch.getSession(username, host, port);Session sshSession = jsch.getSession(username, host, port);System.out.println("Session created.");sshSession.setPassword(password);Properties sshConfig = new Properties();sshConfig.put("StrictHostKeyChecking", "no");sshSession.setConfig(sshConfig);sshSession.connect(5000);System.out.println("Session connected.");System.out.println("Opening Channel.");Channel channel = sshSession.openChannel("sftp");channel.connect();sftp = (ChannelSftp) channel;System.out.println("Connected to " + host + ".");} catch (Exception e) {e.printStackTrace();System.out.println("sftp服务器连接失败");}return sftp;}/*** 上传文件** @param directory* 上传的目录* @param uploadFile* 要上传的文件* @param sftp* @throws SftpException* @throws FileNotFoundException*/public void upload(String directory, String uploadFile, ChannelSftp sftp) throws FileNotFoundException, SftpException {sftp.cd(directory);File file = new File(uploadFile);sftp.put(new FileInputStream(file), file.getName());System.out.println(file.getName() + " sftp上传成功");}/*** 下载文件** @param directory* 下载目录* @param downloadFile* 下载的文件* @param saveFile* 存在本地的路径* @param sftp* @throws SftpException* @throws IOException*/public void download(String directory, String downloadFile, String saveFile, ChannelSftp sftp) throws SftpException, IOException {sftp.cd(directory);File file = new File(saveFile);FileOutputStream os = new FileOutputStream(file);sftp.get(downloadFile, os);os.close();System.out.println(downloadFile + " sftp下载成功");}/*** 删除文件** @param directory* 要删除文件所在目录* @param deleteFile* 要删除的文件* @param sftp*/public void delete(String directory, String deleteFile, ChannelSftp sftp) {try {sftp.cd(directory);sftp.rm(deleteFile);} catch (Exception e) {e.printStackTrace();}}/*** 列出目录下的文件** @param directory* 要列出的目录* @param sftp* @return* @throws SftpException*/public Vector listFiles(String directory, ChannelSftp sftp) throws SftpException {return sftp.ls(directory);}public static void main(String[] args) {SFTPUtil sf = new SFTPUtil();String host = "192.168.1.156";int port = 22;String username = "root";String password = "root";String directory = "C:\\temp\\";String uploadFile = "C:\\temp\\zip\\C1104412000011cams001001012017041111350235458.zip";String downloadFile = "C1104412000011cams001001012017041111350235458.zip";String saveFile = "C:\\temp\\dat\\C1104412000011cams001001012017041111350235459.zip";String deleteFile = "delete.txt";ChannelSftp sftp = sf.connect(host, port, username, password);// try {// sf.upload(directory, uploadFile, sftp);// } catch (FileNotFoundException e1) {// // TODO Auto-generated catch block// e1.printStackTrace();// } catch (SftpException e1) {// // TODO Auto-generated catch block// e1.printStackTrace();// }// try {// sf.download(directory, downloadFile, saveFile, sftp);// } catch (Exception e1) {// // TODO Auto-generated catch block// e1.printStackTrace();// }// sf.delete(directory, deleteFile, sftp);try {sftp.cd("\\zip");sftp.mkdir("ss");System.out.println("finished");} catch (Exception e) {e.printStackTrace();}}}应注意，1.方法中用到的sftp.cd("path")，path是sftp服务器根目录后的路径（windows是如此，linux未测试），该方法用来跳转到指定目录2.上传文件sftp.put(new FileInputStream(file), file.getName());file是一个完整的文件路径

3.下载文件com.jcraft.jsch.ChannelSftp.get(Stringarg0, OutputStream arg1)这个方法用到的是文件名