package com.fengstingworld.framework.ftp;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import org.apache.commons.io.IOUtils;import org.apache.commons.net.ftp.FTPClient;import org.apache.commons.net.ftp.FTPFile;import org.apache.commons.net.ftp.FTPReply;public class FtpHelper{ /** * 向FTP服务器上传、下载、删除文件 * @param flag * @param fileName * @param remotePathName * @param localPathName * @param input * @throws Exception */ public static void handleFtpFiles(String flag, String fileName, String remotePath, String localPathName, InputStream input){ ApplicationUtils applicationUtils = new ApplicationUtils(); String ip = StringUtils.toString(applicationUtils.getCo("FTPSERVER"));//FTP服务器IP地址 String username = StringUtils.toString(applicationUtils.getCo("FTPUSERNAME"));//FTP服务器用户名 String password = StringUtils.toString(applicationUtils.getCo("FTPPASSWORD"));//FTP服务器密码 int port;//FTP服务器端口 try{ port = Integer.parseInt("".equals(StringUtils.toString(StringUtils.toString(applicationUtils.getCo("FTPPORT")))) ? "0" : StringUtils.toString(StringUtils.toString(applicationUtils.getCo("FTPPORT")))); } catch (Exception e){ e.printStackTrace(); throw new RuntimeException("解析端口时出错了，请查系统参数配置的FTP端口是否合法！"); } if("".equals(ip) || "".equals(username) || "".equals(password) || 0 == port) return; if("upload".equals(flag)){ uploadFile(ip, port, username, password, remotePath, fileName, input); } else if("download".equals(flag)){ downFile(ip, port, username, password, remotePath, fileName, localPathName); } else if("delete".equals(flag)){ deleteFile(ip, port, username, password, remotePath, fileName); } } /** * 文件上传源代码 * Description: 向FTP服务器上传文件 * @Version1.0 * @param url FTP服务器hostname * @param port FTP服务器端口 * @param username FTP登录账号 * @param password FTP登录密码 * @param path FTP服务器保存目录 * @param filename 上传到FTP服务器上的文件名 * @param input 输入流 * @return 成功返回true，否则返回false */ public static void uploadFile(String url,int port,String username,String password,String path,String filename,InputStream input){ FTPClient ftp = loginFtpServer(url, port, username, password); try{ for(String str : path.split("/")){ ftp.makeDirectory(str); ftp.changeWorkingDirectory(str); } ftp.setBufferSize(2048); ftp.setControlEncoding("UTF8"); //设置文件类型 ftp.setFileType(FTPClient.BINARY_FILE_TYPE); ftp.storeFile(filename, input); IOUtils.closeQuietly(input); }catch(Exception ex){ ex.printStackTrace(); throw new RuntimeException("上传文件到FTP服务器出现异常"); }finally{ closeFtpServer(ftp); } } /** * 删除Ftp服务器上的某个文件 * @param url * @param port * @param username * @param password * @param path * @param filename * @return */ public static void deleteFile(String url,int port,String username,String password,String path,String filename){ FTPClient ftp = loginFtpServer(url, port, username, password); try{ ftp.changeWorkingDirectory(path); ftp.deleteFile(filename); }catch(Exception ex){ ex.printStackTrace(); throw new RuntimeException("删除Ftp服务器上的文件异常"); }finally{ closeFtpServer(ftp); } } /** * 文件下载源代码 * Description: 从FTP服务器下载文件 * @Version1.0 * @param url FTP服务器hostname * @param port FTP服务器端口 * @param username FTP登录账号 * @param password FTP登录密码 * @param remotePath FTP服务器上的相对路径 * @param fileName 要下载的文件名 * @param localPath 下载后保存到本地的路径 * @return */ public static boolean downFile(String url,int port,String username,String password,String remotePath,String fileName,String localPath) { boolean success = false; FTPClient ftp = loginFtpServer(url, port, username, password); try { ftp.changeWorkingDirectory(remotePath);//转移到FTP服务器目录 FTPFile[] fs = ftp.listFiles(); for(FTPFile ff:fs){ if(ff.getName().equals(fileName)){ File localFile = new File(localPath+"/"+ff.getName()); if (!localFile.exists() && !localFile.getParentFile().exists()) { localFile.getParentFile().mkdirs(); } OutputStream is = new FileOutputStream(localFile); ftp.retrieveFile(ff.getName(), is); is.close(); } } success = true; } catch (Exception e) { e.printStackTrace(); }finally{ closeFtpServer(ftp); } return success; } /** * 连接FTP服务器 * @param url * @param port * @param username * @param password * @return */ public static FTPClient loginFtpServer(String url,int port,String username,String password){ FTPClient ftp = new FTPClient(); try { int reply; ftp.connect(url, port); ftp.login(username, password);//登录 System.out.println("login success!"); reply = ftp.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { ftp.disconnect(); return null; } } catch (IOException e) { e.printStackTrace(); throw new RuntimeException("连接FTP服务器异常"); } return ftp; } /** * 关闭FTP服务器连接 * @param ftp */ public static void closeFtpServer(FTPClient ftp){ try{ ftp.logout(); }catch (IOException e) { e.printStackTrace(); } finally { if (ftp.isConnected()) { try { ftp.disconnect(); } catch (IOException ioe) { } } } }}
