ftpClient上传文件详解
sun.net.ftp.FtpClient.，该类库主要提供了用于建立FTP连接的类。利用这些类的方法，编程人员可以远程登录到FTP服务器，列举该服务器上的目录，设置传输协议，以及传送文件。FtpClient类涵盖了几乎所有FTP的功能，FtpClient的实例变量保存了有关建立"代理"的各种信息。下面给出了这些实例变量。
直接给大家上代码，想要用功能的直接拿过来用接可以：
import java.io.BufferedInputStream; 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.io.OutputStream; import java.sql.Connection; import java.sql.Statement; import java.util.ArrayList; import java.util.List; import java.util.Vector; import org.apache.commons.net.ftp.FTPClient; import org.apache.commons.net.ftp.FTPFile; import org.apache.commons.net.ftp.FTPReply; public class TfpTools { //连接ftp private FTPClient ftpClient = null; // public static String ip = "117.21.208.37"; // public static int port = 21; // public static String username = "eftp"; // public static String password = "e1f2t3p4"; // public static String sub_path = "/opt/tomcat/webapps/photocdn/msgdata/"; /** * 连接ftp */ public void connectServer(String ip,int port,String username,String password,String sub_path) throws Exception { int i = 10; if (ftpClient == null) { int reply; while (i > 0) { try { ftpClient = new FTPClient(); if (port != 21) ftpClient.connect(ip, port); else ftpClient.connect(ip); ftpClient.login(username, password); reply = ftpClient.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { ftpClient.disconnect(); } System.out.println("sub_path=============="+sub_path); // 对目录进行转换 if (ftpClient.changeWorkingDirectory(sub_path)) { } else { ftpClient.disconnect(); ftpClient = null; } } catch (Exception e) { e.printStackTrace(); if (0 < i--) { try { Thread.sleep(10000); continue; } catch (Exception ex) { } } } i = 0; } } } /** * 文件上传 * @param ip * @param port * @param username * @param password * @param sub_path 远程文件上传目录 * @param localFilePath 本地文件存放路径、、 * @param newFileName 远程生成的文件路径和文件名 * @throws Exception */ public void uploadFile(String ip,int port,String username,String password,String sub_path,String localFilePath, String newFileName)throws Exception { BufferedInputStream buffIn = null; try { connectServer(ip,port,username,password,sub_path); //连接服务器 System.out.println("start upload"); buffIn = new BufferedInputStream(new FileInputStream(localFilePath)); System.out.println("find localFilePath success"); ftpClient.storeFile(newFileName, buffIn); System.out.println("upload success"); } catch (Exception e) { e.printStackTrace(); throw e; } finally { try { if (buffIn != null) buffIn.close(); } catch (Exception e) { e.printStackTrace(); } } } /** * * Definition: 读取txt文件，存放到list中，以便于读取 * author: xiehaoyu * Created date: 2013-6-14 * @param readTxt * @return */ public static List<String> readTxt(String readTxt){ BufferedReader br = null; List<String> list = new ArrayList<String>(); try { br = new BufferedReader(new InputStreamReader(new FileInputStream( new File(readTxt)))); String temp = br.readLine(); while (temp != null) { String[] str=temp.toString().trim().split("\\|"); for(String s : str){ if(!"".equals(s)) list.add(s); } temp=br.readLine(); } br.close(); } catch (Exception e1) { e1.printStackTrace(); } return list; } public void copyFile(String oldPath, String newPath) { try { int bytesum = 0; int byteread = 0; File oldfile = new File(oldPath); if (oldfile.exists()) { //文件存在时 InputStream inStream = new FileInputStream(oldPath); //读入原文件 FileOutputStream fs = new FileOutputStream(newPath); byte[] buffer = new byte[1444]; while ( (byteread = inStream.read(buffer)) != -1) { bytesum += byteread; //字节数 文件大小 System.out.println(bytesum); fs.write(buffer, 0, byteread); } inStream.close(); } } catch (Exception e) { System.out.println("复制单个文件操作出错"); e.printStackTrace(); } } public void delFile(String filePathAndName) { try { String filePath = filePathAndName; filePath = filePath.toString(); java.io.File myDelFile = new java.io.File(filePath); myDelFile.delete(); } catch (Exception e) { System.out.println("删除文件操作出错"); e.printStackTrace(); } } /** * 文件下载。。 * @param url ftp ip * @param port ftp端口 * @param username * @param password * @param remotePath 下载路径 * @param fileName 下载文件中包含什么文件名 * @param localPath 本地存放路径 * @return */ public static boolean downFile( String url, int port, String username, String password, String remotePath, String fileName, String localPath){ boolean success = false; FTPClient ftp = new FTPClient(); try { int reply; ftp.connect(url, port); //如果采用默认端口，可以使用ftp.connect(url)的方式直接连接FTP服务器 ftp.login(username, password);//登录 reply = ftp.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { ftp.disconnect(); return success; } ftp.changeWorkingDirectory(remotePath);//转移到FTP服务器目录 FTPFile[] fs = ftp.listFiles(); TfpTools fu=new TfpTools(); for(FTPFile ff:fs){ if(ff.getName().contains(fileName)){ if(fu.ToDetermineWhetherAFileExists(ff.getName())){ File localFile = new File(localPath+"/"+ff.getName()); OutputStream is = new FileOutputStream(localFile); ftp.retrieveFile(ff.getName(), is); is.close(); } } } ftp.logout(); success = true; } catch (IOException e) { e.printStackTrace(); } finally { if (ftp.isConnected()) { try { ftp.disconnect(); } catch (IOException ioe) { } } } return success; } public boolean ToDetermineWhetherAFileExists(String fileName){ boolean flag=true; Vector<String> v=new Vector<String>(); v=GetTestXlsFileName("c:/JX_jiekou/src/backups"); for(int i=0;i<v.size();i++){ String str=(String)v.elementAt(i); if(str.equals(fileName)){ flag=false; } } return flag; } /** * 读取本地某个目录下，所有txt文件的文件名 * @param fileAbsolutePath 本地文件目录。 * @return */ public static Vector<String> GetTestXlsFileName(String fileAbsolutePath) { Vector<String> vecFile = new Vector<String>(); File file = new File(fileAbsolutePath); File[] subFile = file.listFiles(); for (int iFileLength = 0; iFileLength < subFile.length; iFileLength++) { // 判断是否为文件夹 if (!subFile[iFileLength].isDirectory()) { String fileName = subFile[iFileLength].getName(); // 判断是否为.txt结尾 if (fileName.trim().toLowerCase().endsWith(".txt")) { vecFile.add(fileName); } } } return vecFile; } public boolean truncateTable(String tableName){ Connection conn=null; Statement sm=null; String sql="truncate table "+tableName; try { conn=DBConfig.getConn(JkConfig.getDb_url(),JkConfig.getDb_username(),JkConfig.getDb_password(),0); sm=conn.createStatement(); sm.executeUpdate(sql); } catch (Exception e) { e.printStackTrace(); } return true; } public void closeConnect() { try { if (ftpClient != null) { ftpClient.logout(); ftpClient.disconnect(); ftpClient=null; } } catch (Exception e) { e.printStackTrace(); } } }
