XFTP完整实例

Xftp 与ftp 类似，安全性要较高。java实现操作sftp需要第三方的jar包，本例使用  

package xftp;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;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;/** * @author handongwei */public class SftpRead {/** * 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();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) {}return sftp;}/** * 上传文件 *  * @param directory *            上传的目录 * @param uploadFile *            要上传的文件 * @param sftp */public void upload(String directory, String uploadFile, ChannelSftp sftp) {try {sftp.cd(directory);File file = new File(uploadFile);sftp.put(new FileInputStream(file), file.getName());} catch (Exception e) {e.printStackTrace();}}/** * 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 */public void download(String directory, String downloadFile,String saveFile, ChannelSftp sftp) {try {sftp.cd(directory);File file = new File(saveFile);FileOutputStream out = new FileOutputStream(file);InputStream in = sftp.get(downloadFile);BufferedReader bf = new BufferedReader(new InputStreamReader(in));StringBuffer sb = new StringBuffer();String line = null;while((line = bf.readLine()) != null){sb.append(line + "\n");}System.out.println(sb);sftp.get(downloadFile,out);if (out != null){out.close();}if (in != null){in.close();}} catch (Exception e) {e.printStackTrace();}}/** * 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) {SftpRead sf = new SftpRead();String host = "10.0.1.3";int port = 22;String username = "weblogic";String password = "weblogic_iss";String directory = "/home/weblogic/bea103/user_projects/domains/ybttest_domain/log/BM";String uploadFile = "D:\\tmp\\upload.txt";String downloadFile = "debug.log";String saveFile = "D:\\tmp\\download.txt";String deleteFile = "delete.txt";ChannelSftp sftp = sf.connect(host, port, username, password);//sf.upload(directory, uploadFile, sftp);sf.download(directory, downloadFile, saveFile, sftp);//sf.delete(directory, deleteFile, sftp);try {//sftp.cd(directory);//sftp.mkdir("ss");//System.out.println("finished");sftp.quit();System.out.println(sftp.isClosed());} catch (Exception e) {e.printStackTrace();}}        public String convertStreamToString(InputStream is) {           /*          * To convert the InputStream to String we use the BufferedReader.readLine()          * method. We iterate until the BufferedReader return null which means          * there's no more data to read. Each line will appended to a StringBuilder          * and returned as String.          */           BufferedReader reader = new BufferedReader(new InputStreamReader(is));            StringBuilder sb = new StringBuilder();              String line = null;           try {               while ((line = reader.readLine()) != null) {                    sb.append(line + "\n");                }            } catch (IOException e) {                e.printStackTrace();            } finally {               try {                    is.close();                } catch (IOException e) {                    e.printStackTrace();                }            }             return sb.toString();        }   }

jsch-20091114.jar