最近在做ftp文件的上傳與下載,基於此,整理了一下資料。本來想采用java自帶的方法,可是看了一下jdk1.6與1.7的實現方法有點區別,於是采用了Apache下的框架實現的。。。
1.首先引用3個包

2.然后是相關類的代碼
/** * ftp鏈接常量 * */ public class Ftp { private String ipAddr;//ip地址 private Integer port;//端口號 private String userName;//用戶名 private String pwd;//密碼 private String path;//aaa路徑 public String getIpAddr() { return ipAddr; } public void setIpAddr(String ipAddr) { this.ipAddr = ipAddr; } public Integer getPort() { return port; } public void setPort(Integer port) { this.port = port; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } public String getPath() { return path; } public void setPath(String path) { this.path = path; } }
import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import org.apache.commons.net.ftp.FTPClient; import org.apache.commons.net.ftp.FTPFile; import org.apache.commons.net.ftp.FTPReply; import org.apache.log4j.Logger; public class FtpUtil { private static Logger logger=Logger.getLogger(FtpUtil.class); private static FTPClient ftp; /** * 獲取ftp連接 * @param f * @return * @throws Exception */ public static boolean connectFtp(Ftp f) throws Exception{ ftp=new FTPClient(); boolean flag=false; int reply; if (f.getPort()==null) { ftp.connect(f.getIpAddr(),21); }else{ ftp.connect(f.getIpAddr(),f.getPort()); } ftp.login(f.getUserName(), f.getPwd()); ftp.setFileType(FTPClient.BINARY_FILE_TYPE); reply = ftp.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { ftp.disconnect(); return flag; } ftp.changeWorkingDirectory(f.getPath()); flag = true; return flag; } /** * 關閉ftp連接 */ public static void closeFtp(){ if (ftp!=null && ftp.isConnected()) { try { ftp.logout(); ftp.disconnect(); } catch (IOException e) { e.printStackTrace(); } } } /** * ftp上傳文件 * @param f * @throws Exception */ public static void upload(File f) throws Exception{ if (f.isDirectory()) { ftp.makeDirectory(f.getName()); ftp.changeWorkingDirectory(f.getName()); String[] files=f.list(); for(String fstr : files){ File file1=new File(f.getPath()+"/"+fstr); if (file1.isDirectory()) { upload(file1); ftp.changeToParentDirectory(); }else{ File file2=new File(f.getPath()+"/"+fstr); FileInputStream input=new FileInputStream(file2); ftp.storeFile(file2.getName(),input); input.close(); } } }else{ File file2=new File(f.getPath()); FileInputStream input=new FileInputStream(file2); ftp.storeFile(file2.getName(),input); input.close(); } } /** * 下載鏈接配置 * @param f * @param localBaseDir 本地目錄 * @param remoteBaseDir 遠程目錄 * @throws Exception */ public static void startDown(Ftp f,String localBaseDir,String remoteBaseDir ) throws Exception{ if (FtpUtil.connectFtp(f)) { try { FTPFile[] files = null; boolean changedir = ftp.changeWorkingDirectory(remoteBaseDir); if (changedir) { ftp.setControlEncoding("GBK"); files = ftp.listFiles(); for (int i = 0; i < files.length; i++) { try{ downloadFile(files[i], localBaseDir, remoteBaseDir); }catch(Exception e){ logger.error(e); logger.error("<"+files[i].getName()+">下載失敗"); } } } } catch (Exception e) { logger.error(e); logger.error("下載過程中出現異常"); } }else{ logger.error("鏈接失敗!"); } } /** * * 下載FTP文件 * 當你需要下載FTP文件的時候,調用此方法 * 根據<b>獲取的文件名,本地地址,遠程地址</b>進行下載 * * @param ftpFile * @param relativeLocalPath * @param relativeRemotePath */ private static void downloadFile(FTPFile ftpFile, String relativeLocalPath,String relativeRemotePath) { if (ftpFile.isFile()) { if (ftpFile.getName().indexOf("?") == -1) { OutputStream outputStream = null; try { File locaFile= new File(relativeLocalPath+ ftpFile.getName()); //判斷文件是否存在,存在則返回 if(locaFile.exists()){ return; }else{ outputStream = new FileOutputStream(relativeLocalPath+ ftpFile.getName()); ftp.retrieveFile(ftpFile.getName(), outputStream); outputStream.flush(); outputStream.close(); } } catch (Exception e) { logger.error(e); } finally { try { if (outputStream != null){ outputStream.close(); } } catch (IOException e) { logger.error("輸出文件流異常"); } } } } else { String newlocalRelatePath = relativeLocalPath + ftpFile.getName(); String newRemote = new String(relativeRemotePath+ ftpFile.getName().toString()); File fl = new File(newlocalRelatePath); if (!fl.exists()) { fl.mkdirs(); } try { newlocalRelatePath = newlocalRelatePath + '/'; newRemote = newRemote + "/"; String currentWorkDir = ftpFile.getName().toString(); boolean changedir = ftp.changeWorkingDirectory(currentWorkDir); if (changedir) { FTPFile[] files = null; files = ftp.listFiles(); for (int i = 0; i < files.length; i++) { downloadFile(files[i], newlocalRelatePath, newRemote); } } if (changedir){ ftp.changeToParentDirectory(); } } catch (Exception e) { logger.error(e); } } } public static void main(String[] args) throws Exception{ Ftp f=new Ftp(); f.setIpAddr("1111"); f.setUserName("root"); f.setPwd("111111"); FtpUtil.connectFtp(f); File file = new File("F:/test/com/test/Testng.java"); FtpUtil.upload(file);//把文件上傳在ftp上 FtpUtil.startDown(f, "e:/", "/xxtest");//下載ftp文件測試 System.out.println("ok"); } }
以上代碼均測試通過了。。。
項目及相關包下載:http://pan.baidu.com/s/1hq5p7NI
