最近再開發中遇到需要將文件上傳到Linux服務器上,至此整理代碼筆記。
此種連接方法中有考慮到並發問題,在進行創建FTP連接的時候將每一個連接對象存放至
ThreadLocal<Ftp> 中以確保每個線程之間對FTP的打開與關閉互不影響。
package com.test.utils;import java.io.BufferedInputStream;import java.io.File;import java.io.FileFilter;import java.io.FileInputStream;import java.io.InputStream;import java.util.ArrayList;import java.util.Date;import java.util.List;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import com.jcraft.jsch.ChannelSftp;import com.jcraft.jsch.JSch;import com.jcraft.jsch.Session;public class Ftp { //打印log日誌private static final Log logger = LogFactory.getLog(Ftp.class); private static Date last_push_date = null; private Session sshSession; private ChannelSftp channel; private static ThreadLocal<Ftp> sftpLocal = new ThreadLocal<Ftp>(); private Ftp(String host, int port, String username, String password) throws Exception { JSch jsch = new JSch(); jsch.getSession(username, host, port); //根據用戶名,密碼,端口號獲取session sshSession = jsch.getSession(username, host, port); sshSession.setPassword(password); //修改服務器/etc/ssh/sshd_config 中GSSAPIAuthentication的值yes為no,解決用戶不能遠程登錄sshSession.setConfig("userauth.gssapi-with-mic", "no"); //為session對象設置properties,第一次訪問服務器時不用輸入yes sshSession.setConfig("StrictHostKeyChecking", "no"); sshSession.connect(); //獲取sftp通道channel = (ChannelSftp)sshSession.openChannel("sftp"); channel.connect(); logger.info("連接ftp成功!" + sshSession); } /** * 是否已連接* * @return */ private boolean isConnected() { return null != channel && channel.isConnected(); } /** * 獲取本地線程存儲的sftp客戶端* * @return * @throws Exception */ public static Ftp getSftpUtil(String host, int port, String username, String password) throws Exception { //獲取本地線程Ftp sftpUtil = sftpLocal.get(); if (null == sftpUtil || !sftpUtil.isConnected()) { //將新連接防止本地線程,實現並發處理sftpLocal.set(new Ftp(host, port, username, password)); } return sftpLocal.get(); } /** * 釋放本地線程存儲的sftp客戶端*/ public static void release() { if (null != sftpLocal.get()) { sftpLocal.get().closeChannel(); logger.info("關閉連接" + sftpLocal.get().sshSession); sftpLocal.set(null); } } /** * 關閉通道* * @throws Exception */ public void closeChannel() { if (null != channel) { try { channel.disconnect(); } catch (Exception e) { logger.error("關閉SFTP通道發生異常:", e); } } if (null != sshSession) { try { sshSession.disconnect(); } catch (Exception e) { logger.error("SFTP關閉session異常:", e); } } } /** * @param directory 上傳ftp的目錄* @param uploadFile 本地文件目錄* */ public void upload(String directory, String uploadFile) throws Exception { try {<br> //執行列表展示ls 命令channel.ls(directory);<br> //執行盤符切換cd 命令channel.cd(directory); List<File> files = getFiles(uploadFile, new ArrayList<File>()); for (int i = 0; i < files.size(); i++) { File file = files.get(i); InputStream input = new BufferedInputStream(new FileInputStream(file)); channel.put(input, file.getName()); try { if (input != null) input.close(); } catch (Exception e) { e.printStackTrace(); logger.error(file.getName() + "關閉文件時.....異常!" + e.getMessage()); } if (file.exists()) { boolean b = file.delete(); logger.info(file.getName() + "文件上傳完畢!刪除標識:" + b); } } }catch (Exception e) { logger.error("【子目錄創建中】:",e); //創建子目錄channel.mkdir(directory); } } //獲取文件public List<File> getFiles(String realpath, List<File> files) { File realFile = new File(realpath); if (realFile.isDirectory()) { File[] subfiles = realFile.listFiles(new FileFilter() { @Override public boolean accept(File file) { if (null == last_push_date ) { return true; } else { long modifyDate = file.lastModified(); return modifyDate > last_push_date.getTime(); } } }); for (File file : subfiles) { if (file.isDirectory()) { getFiles(file.getAbsolutePath(), files); } else { files.add(file); } if (null == last_push_date) { last_push_date = new Date(file.lastModified()); } else { long modifyDate = file.lastModified(); if (modifyDate > last_push_date.getTime()) { last_push_date = new Date(modifyDate); } } } } return files; }}總結
以上所述是小編給大家介紹的Java遠程連接Linux服務器並執行命令及上傳文件,希望對大家有所幫助如果大家有任何疑問歡迎給我留言,小編會及時回復大家的!