ftp文件下载
链接ftp，并从ftp上面下载文件
调用方法：
package ftp; import java.io.File; import java.io.IOException; import pojo.FileFtp; public class Test { public static void main(String[] args) throws Exception { getRemotoFtpAllFileName(); } //获取FTP目录下的所有文件夹 public static void getRemotoFtpAllFileName() { Ftp ftp=new Ftp(); ftp.setIpAddr("1.1.1.217"); ftp.setPort(21); ftp.setUserName("zangsan"); ftp.setPwd("123"); ftp.setPath("/home/zangsan/tmp"); /* //文件上传 File file=new File("C:\\Users\\doume\\Desktop\\问责率调用方法.txt"); FtpUtil.upload(ftp,file); */ try { FtpUtil.startDown(ftp,"C:\\Users\\doume\\Desktop\\拦截器验证token\\filedown\\test","/home/zangsan/tmp"); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println("success"); } }
一共有三个类：
package ftp; public class Ftp { private String ipAddr; private Integer port; private String userName; private String pwd; private String path; 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; } }
package ftp; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.util.ArrayList; import org.apache.commons.net.ftp.FTPClient; import org.apache.commons.net.ftp.FTPReply; public class FTPRemo { public FTPRemo(String path,String addr,int port,String username,String password ) { try { connect(path,addr,port,username,password ); } catch (Exception e) { // TODO Auto-generated catch block System.out.println("ftp连接失败，IP: "+addr+",port: "+port); e.printStackTrace(); } } private FTPClient ftp; /** * * @param path * @param addr * @param port * @param username * @param password * @return * @throws Exception */ public boolean connect(String path,String addr,int port,String username,String password) throws Exception { boolean result = false; ftp = new FTPClient(); int reply; ftp.connect(addr,port); ftp.login(username,password); ftp.setFileType(FTPClient.BINARY_FILE_TYPE); reply = ftp.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { ftp.disconnect(); return result; } ftp.changeWorkingDirectory(path); result = true; return result; } /** * * @param file 文件上传 * @throws Exception */ public void upload(File file) throws Exception{ if(file.isDirectory()){ ftp.makeDirectory(file.getName()); ftp.changeWorkingDirectory(file.getName()); String[] files = file.list(); for (int i = 0; i < files.length; i++) { File file1 = new File(file.getPath()+"\\"+files[i] ); if(file1.isDirectory()){ upload(file1); ftp.changeToParentDirectory(); }else{ File file2 = new File(file.getPath()+"\\"+files[i]); FileInputStream input = new FileInputStream(file2); ftp.storeFile(file2.getName(), input); input.close(); } } }else{ File file2 = new File(file.getPath()); FileInputStream input = new FileInputStream(file2); String name=new String(file2.getName().getBytes(),"iso-8859-1"); ftp.storeFile(name, input); input.close(); } } /* public static void main(String[] args) throws Exception{ FTPRemo t = new FTPRemo(); t.connect("/home/user-file", "192.168.31.92", 21, "user-file", "123"); File file = new File("F:/test_client.txt"); t.upload(file); System.out.println("ok"); } */ }
package ftp; 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; /** * 获取ftp连接 * @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; } /** * 关闭ftp连接 */ public static void closeFtp(){ if (ftp!=null && ftp.isConnected()) { try { ftp.logout(); ftp.disconnect(); } catch (IOException e) { e.printStackTrace(); } } } /** * ftp上传文件 * @param f * @throws Exception */ public static void upload(Ftp ftps,File f) throws Exception{ if (FtpUtil.connectFtp(ftps)) { 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(ftps,file1); ftp.changeToParentDirectory(); }else{ File file2=new File(f.getPath()+"/"+fstr); FileInputStream input=new FileInputStream(file2); String name=new String(file2.getName().getBytes(),"iso-8859-1"); ftp.storeFile(name,input); input.close(); } } }else{ File file2=new File(f.getPath()); FileInputStream input=new FileInputStream(file2); String name=new String(file2.getName().getBytes(),"iso-8859-1"); ftp.storeFile(name, input); input.close(); } }else{ logger.error("链接失败"); } } /** * 下载链接配置 * @param f * @param localBaseDir 本地目录 * @param remoteBaseDir 远程目录 * @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("utf-8"); 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()+">下载失败"); } } } } catch (Exception e) { logger.error(e); logger.error("下载过程中出现异"); } }else{ logger.error("链接失败"); } } /** * * 下载FTP文件 * 当你�?要下载FTP文件的时候，调用此方�? * 根据<b>获取的文件名，本地地�?，远程地�?</b>进行下载 * * @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+ File.separator+ftpFile.getName()); //判断文件是否存在，存在则返回 if(locaFile.exists()){ return; }else{ outputStream = new FileOutputStream(relativeLocalPath+ File.separator+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("输出文件流异�?"); } } } } else { String newlocalRelatePath = relativeLocalPath +File.separator+ ftpFile.getName(); System.out.println(newlocalRelatePath); String newRemote = new String(relativeRemotePath+ File.separator+ftpFile.getName().toString()); System.out.println(newRemote); 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{ } }
jar包：
