JAVA Learning (1) _ operate FTP

[Html] // FFP initializes the connection public static void init () {Properties config = new Properties (); try {System. out. println ("access ftp. properties "); // read the configuration file InputStream inputStream = FTPUtils. class. getClassLoader (). getResourceAsStream ("/ftp. properties "); config. load (inputStream); // FTP Server IP serverIP = config. getProperty ("ftp. serverName "); // FTP server port = config. getProperty ("ftp. port "); // FTP Server userName = config. GetProperty ("ftp. userName"); // FTP server password = config. getProperty ("ftp. password"); // server name. (The file name assembled here, for example, 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. B RowsersMonthFile ") + getFtpMonth () + ". csv ";} catch (Exception e) {e. printStackTrace (); logger. error ("ftp. failed to load properties: ", e) ;}/ *** obtain the name of the BROWSERS report and obtain the previous month. For example, it is now in December February. Obtain the String 2012-01 * @ return */public static String getFtpMonth () {Date date = new Date (); Calendar ar cal = Calendar ar. getInstance (); cal. setTime (date); cal. add (Calendar. MONTH,-1); SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM"); String dateStr = sdf. format (cal. getTime (); return dateStr;}/*** get the name of the daily OMNITURE report and the previous day. For example, this is July 22, February 22, 2013. Obtain the String: February 21, 2013 * @ return */public static String getFtpDay () {Date date Date = new Date (); Calendar ar cal = Calendar ar. 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;}/*** download the FTP server file to the local device and return the local file. * @ Param remoteFileName * @ param localFileName * @ return */public static synchronized String downloadFile (String remoteFileName, String localFileName) {try {File localFile = new File (localFileName ); // if the object does not exist. Create this file if (! LocalFile. exists () {localFile. createNewFile ();} else {logger.info ("the file already exists"); 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 data download error:", e); return null ;}} /*** use javacsv to parse csv files * @ 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 () {// skip useless rows. If (I ++ <= 15) {String [] str = reader. getValues (); System. out. println ("number:" + (I-1) + str [0]); continue;} // read each row of data returns String [] str = reader in an array. 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]); omnitur E. 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. se TType (2); omnitureList. add (omniture); List <OmnitureReportBean> list = this. omnitureDao. findOmnitureMonthList (omniture. getStartTime (), omniture. getBrowsers (); // if the table already contains data for this time period, the data in this csv will not be inserted repeatedly if (list! = Null & list. size ()> 0) {continue;} else {omnitureDao. saveOmniture (omniture) ;}return omnitureList;} catch (Exception e) {e. printStackTrace (); return null ;}/ *** compared with the current date. If true is returned earlier than the current time. otherwise, 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 ar. 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) {// return true before the current system time ;} else {// return false later than the current system time ;}} /*** delete the file on the server * @ 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 ;}