JAVA学习(一)__操作FTP

//FFP初始化连接
	public static void init(){
		Properties config = new Properties();
		try{
			System.out.println("访问ftp.properties");
			//读取配置文件
			InputStream inputStream = FTPUtils.class.getClassLoader().getResourceAsStream("/ftp.properties");
			config.load(inputStream);
			//FTP服务器IP
			serverIP = config.getProperty("ftp.serverName");
			//FTP服务器端口
			port = config.getProperty("ftp.port");
			//FTP服务器用户名
			userName = config.getProperty("ftp.userName");
			//FTP服务器密码
			password = config.getProperty("ftp.password");
			//服务器名称。(这里组装的文件名,如:report_2013_02_01.csv)
			FTPConst.REMORT_FILE_NAME = config.getProperty("ftp.reportDateFile")+getFtpDay()+".csv";
			FTPConst.LOCAL_FILE_NAME = config.getProperty("local.reportDateFile")+getFtpDay()+".csv";
			FTPConst.FTP_REPORT_FLOW_BROWSERS_FILE_NAME = config.getProperty("ftp.browsersMonthFile")+getFtpMonth()+".csv";
			FTPConst.LOCAL_REPORT_FLOW_BROWSERS_FILE_NAME = config.getProperty("local.BrowsersMonthFile")+getFtpMonth()+".csv";
		}catch(Exception e){
			e.printStackTrace();
			logger.error("ftp.properties加载失败:",e);
		}
	}
	/**
	 * 获得BROWSERS报表的名称拼接信息,获得前一个月。如:现在2月。获得字符串为2012-01
	 * @return
	 */
	public static String getFtpMonth(){
		Date date = new Date();
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		cal.add(Calendar.MONTH, -1);
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
		String dateStr = sdf.format(cal.getTime());
		return dateStr;
	}
	
	/**
	 * 获得每日OMNITURE报表的名称拼接信息,获得前一日。如:现在为2013年02月22日。获得字符串为2013年02月21日
	 * @return
	 */
	public static String getFtpDay(){
		Date date = new Date();
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		cal.add(Calendar.DAY_OF_MONTH, -1);
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		String dateStr = sdf.format(cal.getTime());
//		System.out.println(dateStr);
		return dateStr;
	}
	/**
	 * 将FTP服务器文件下载到本地,返回本地文件。
	 * @param remoteFileName
	 * @param localFileName
	 * @return
	 */
	public static synchronized String downloadFile(String remoteFileName, String localFileName){
		try{
			File localFile = new File(localFileName);
			//如果文件不存在。则创建此文件
			if(!localFile.exists()){
				localFile.createNewFile();
			}else{
				logger.info("创建文件已存在");
				return localFileName;
			}
			OutputStream output = new FileOutputStream(localFile);
			FTPClient client = new FTPClient();
			client.connect(serverIP);
			client.login(userName, password);
			boolean flag = client.retrieveFile(remoteFileName, output);
			client.logout();
			if(flag){
				return localFileName;
			}else{
				return null;
			}
		}catch(Exception e){
			e.printStackTrace();
			logger.error("omniture数据下载错误:",e);
			return null;
		}
	}

	/**
	 * 利用javacsv解析csv文件
	 * @param file
	 * @return
	 */
	private List<OmnitureReportBean> javaCsv(String file){
		try{
			List<OmnitureReportBean> omnitureList = new ArrayList<OmnitureReportBean>();
			CsvReader reader = new CsvReader(file, ',', Charset.forName("UTF-8")); 
			int i = 0;
			while (reader.readRecord())   
			{  
				//跳过没用的行数。
					if(i++ <= 15){
						String[] str = reader.getValues();
						System.out.println("数字编号:"+ (i-1) + str[0]);
						continue;
					}
				
				//读取每行数据以数组形式返回  
				String[] str = reader.getValues(); 
				
				OmnitureReportBean omniture = new OmnitureReportBean();
				String timeStr = file.trim().substring(21, 28);
				Date date = smipleDateFormat.parse(timeStr);
			    omniture.setStartTime(date);
			    omniture.setEndTime(date);
				omniture.setBrowsers(str[0]);   
				omniture.setVisits(new Integer(str[1].replace(",", "").trim()));    
				omniture.setSearches(new Integer(str[2].replace(",", "").trim()));
				omniture.setCardAdd(new Integer(str[3].replace(",", "").trim()));
				omniture.setCheckOuts(new Integer(str[4].replace(",", "").trim()));
				omniture.setPament(new Integer(str[5].replace(",", "").trim()));
				omniture.setOrders(new Integer(str[6].replace(",", "").trim()));
				omniture.setType(2);
				omnitureList.add(omniture);
				List<OmnitureReportBean> list = this.omnitureDao.findOmnitureMonthList(omniture.getStartTime(),omniture.getBrowsers());
				//若表里面已有该时间段的数据,则不重复插入本次csv中的数据
				if(list!=null&&list.size()>0){
					continue;
				}else{
					omnitureDao.saveOmniture(omniture);
				}
			}
			return omnitureList;
		}catch(Exception e){
			e.printStackTrace();
			return null;
		}
	}
	
	/**
	 * 与当前日期比较。如早于当前时间返回true.否而返回false
	 * @param endDate
	 * @return
	 */
	public static boolean compareToDate(Date date){
		Calendar cal1 = Calendar.getInstance();
		Calendar cal2 = Calendar.getInstance();
		Date nowDate = new Date();
		cal1.setTime(date);
		cal1.add(Calendar.HOUR_OF_DAY, 00);
		cal1.add(Calendar.MINUTE, 00);
		cal1.add(Calendar.SECOND, 00);
		cal2.setTime(nowDate);
		cal2.add(Calendar.HOUR_OF_DAY, 00);
		cal2.add(Calendar.MINUTE, 00);
		cal2.add(Calendar.SECOND, 00);
		boolean flag = cal1.before(cal2);
		if(flag){
			//早于当前系统时间
			return true;
			
		}else{
			//晚于当前系统时间
			return  false;
		}
	}
	/**
	 * 删除服务器上的文件
	 * @param path
	 * @return
	 * @throws IOException
	 */
	public  boolean delFile(String path) throws IOException {
		boolean flag = false;
		FTPClient client = new FTPClient();
		Date currentTime = new Date();
		SimpleDateFormat formatter = new SimpleDateFormat("yyMMdd");
		
		String dateString = formatter.format(currentTime);
		String fileName = "Report.csv";
		try {
			client.connect(serverIP);
			client.login(userName, password);
			client.enterLocalPassiveMode();
			client.setFileType(FTP.BINARY_FILE_TYPE);
			client.changeWorkingDirectory(path);
			client.deleteFile(path + fileName);
			flag = true;
			logger.info("file:[" + path + fileName + "] is deleted on ftp:" + serverIP);
		} catch (Exception e) {
			flag = false;
		} finally {
			try {
				client.disconnect();
			} catch (IOException e) {
				logger.info("disconnect FTP failed:" + e.getMessage());
			}
		}
		return flag;

	}


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