1.SFTP搭建方法:java
地址:apache
http://www.jb51.net/article/101405.htm數組
https://blog.csdn.net/helloloser/article/details/79399575服務器
2.SFTP工具類:session
import com.jcraft.jsch.*; import org.apache.commons.io.IOUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.*; import java.util.Properties; import java.util.Vector; /** * sftp工具類 實現文件上傳、下載、刪除操做 * @author XIHONGLEI * @date 2018-03-26 */ public class SftpUtil { private transient Logger log = LoggerFactory.getLogger(this.getClass()); private ChannelSftp sftp; private Session session; /** SFTP 登陸用戶名*/ private String username; /** SFTP 登陸密碼*/ private String password; /** 私鑰 */ private String privateKey; /** SFTP 服務器地址IP地址*/ private String host; /** SFTP 端口*/ private int port; /** * 構造基於密碼認證的sftp對象 */ public SftpUtil(String username, String password, String host, int port) { this.username = username; this.password = password; this.host = host; this.port = port; } /** * 構造基於祕鑰認證的sftp對象 */ public SftpUtil(String username, String host, int port, String privateKey) { this.username = username; this.host = host; this.port = port; this.privateKey = privateKey; } public SftpUtil(){} /** * 鏈接sftp服務器 */ public void login(){ try { JSch jsch = new JSch(); if (privateKey != null) { // 設置私鑰 jsch.addIdentity(privateKey); } session = jsch.getSession(username, host, port); if (password != null) { session.setPassword(password); } Properties config = new Properties(); config.put("StrictHostKeyChecking", "no"); session.setConfig(config); session.connect(); Channel channel = session.openChannel("sftp"); channel.connect(); sftp = (ChannelSftp) channel; } catch (JSchException e) { e.printStackTrace(); } } /** * 關閉鏈接 server */ public void logout(){ if (sftp != null) { if (sftp.isConnected()) { sftp.disconnect(); } } if (session != null) { if (session.isConnected()) { session.disconnect(); } } } /** * 將輸入流的數據上傳到sftp做爲文件。文件完整路徑=basePath+directory * @param basePath 服務器的基礎路徑 * @param directory 上傳到該目錄 * @param sftpFileName sftp端文件名 * @param input 輸入流 */ public void upload(String basePath,String directory, String sftpFileName, InputStream input) throws SftpException{ try { sftp.cd(basePath); sftp.cd(directory); } catch (SftpException e) { //目錄不存在,則建立文件夾 String [] dirs=directory.split("/"); String tempPath=basePath; for(String dir:dirs){ if(null == dir || "".equals(dir)) { continue; } tempPath+="/"+dir; try{ sftp.cd(tempPath); }catch(SftpException ex){ sftp.mkdir(tempPath); sftp.cd(tempPath); } } } //上傳文件 sftp.put(input, sftpFileName); } /** * 下載文件。 * @param directory 下載目錄 * @param downloadFile 下載的文件 * @param saveFile 存在本地的路徑 */ public void download(String directory, String downloadFile, String saveFile) throws SftpException, FileNotFoundException{ if (directory != null && !"".equals(directory)) { sftp.cd(directory); } File file = new File(saveFile); sftp.get(downloadFile, new FileOutputStream(file)); } /** * 判斷遠程SFTP服務器上是否存在某個文件 * @param directory 目錄 * @param fileName 文件名 * @return 是否存在 */ public boolean isExists(String directory, String fileName){ boolean isHave = false; try { sftp.cd(directory); SftpATTRS attrs = sftp.stat(fileName); if(attrs != null){ isHave = true; } } catch (Exception e) {} return isHave; } /** * 下載文件 * @param directory 下載目錄 * @param downloadFile 下載的文件名 * @return 字節數組 */ public byte[] download(String directory, String downloadFile) throws SftpException, IOException{ if (directory != null && !"".equals(directory)) { sftp.cd(directory); } InputStream is = sftp.get(downloadFile); byte[] fileData = IOUtils.toByteArray(is); return fileData; } /** * 刪除文件 * @param directory 要刪除文件所在目錄 * @param deleteFile 要刪除的文件 */ public void delete(String directory, String deleteFile) throws SftpException{ sftp.cd(directory); sftp.rm(deleteFile); } /** * 列出目錄下的文件 * @param directory 要列出的目錄 */ public Vector<?> listFiles(String directory) throws SftpException { return sftp.ls(directory); } /** * 測試Main方法 * @param args * @throws SftpException * @throws IOException */ public static void main(String[] args) throws SftpException, IOException { SftpUtil sftp = new SftpUtil("zhnx","Zhnx$p=!@#z@n$h&x", "139.224.145.186", 22022); sftp.login(); /* File file = new File("F:\\img\\timg.jpg"); InputStream is = new FileInputStream(file); sftp.upload("/IN","", "timg.jpg", is);*/ byte[] bytes = sftp.download("/IN","timg.jpg"); ByteUtil.saveFile(bytes,"F:\\img2","timg2.jpg"); sftp.logout(); } }
import java.io.*; /** * byte數組工具類實現byte[]與文件之間的相互轉換 * @author XIHONGLEI * @Date 2018-03-26 */ public class ByteUtil { /** * 得到指定文件的byte數組 */ public static byte[] getBytes(String filePath){ byte[] buffer = null; try { File file = new File(filePath); FileInputStream fis = new FileInputStream(file); ByteArrayOutputStream bos = new ByteArrayOutputStream(1000); byte[] b = new byte[1000]; int n; while ((n = fis.read(b)) != -1) { bos.write(b, 0, n); } fis.close(); bos.close(); buffer = bos.toByteArray(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return buffer; } /** * 根據byte數組,生成文件 */ public static void saveFile(byte[] bfile, String filePath,String fileName) { BufferedOutputStream bos = null; FileOutputStream fos = null; File file = null; try { File dir = new File(filePath); //判斷文件目錄是否存在 if(!dir.exists()&&dir.isDirectory()){ dir.mkdirs(); } file = new File(filePath+"\\"+fileName); fos = new FileOutputStream(file); bos = new BufferedOutputStream(fos); bos.write(bfile); } catch (Exception e) { e.printStackTrace(); } finally { if (bos != null) { try { bos.close(); } catch (IOException e1) { e1.printStackTrace(); } } if (fos != null) { try { fos.close(); } catch (IOException e1) { e1.printStackTrace(); } } } } }