写了个接口,核心思想是两个异构系统之间实现数据的非实时同步。 也就是说平台1生成的数据在每天规定时间放到FTP服务器地址中去,平台2在规定的时间去取数据。这样就可以实现了非实时数据同步。 思想虽说不难理解,但是实现起来还是费了很多功夫。其中涉及的到的技术就有FTP 协议、定时器原理、服务器集群分布思想、ServletContextListener原理。 本代码已经对接成功 ,现分享代码如下,在此抛砖引玉------(相关jar包就不提供了,网上都有)
具体代码如下:
1.监听器类
package com.usermsgsync.servlet;import javax.servlet.ServletContextEvent;import javax.servlet.ServletContextListener;import com.usermsgsync.time.TimerManagerDay;import com.usermsgsync.time.TimerManagerMon;/** * @see 用于监听WEB 应用启动和销毁的事件,监听器类需要实现ServletContextListener接口 * @author * */public class ContextListener implements ServletContextListener { //获取容器中的ServletContext(上下文),为了取到配置中的键值 public void contextInitialized(ServletContextEvent event) { //定时器管理方法,以构造方法获取中的键值 new TimerManagerDay(event.getServletContext()); new TimerManagerMon(event.getServletContext()); } //在服务器停止运行的时候停止所有的定时任务 public void contextDestroyed(ServletContextEvent event) { }}
2.处理具体业务类
package com.usermsgsync;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.List;import com.entity.Userreg;import com.usermsgsync.time.DateUtil;import com.userreg.dao.UserRegDao;public class UserSyncMsg { private static UserRegDao userDao = UserRegDao.getInstance(); private static final String VersionNo = UserSyncMsgConfig.getValue("userSyncMsg_VersionNo"); //版本信息,4位,采用VXXX格式,本版本填V010 private static final String PlatformID = UserSyncMsgConfig.getValue("userSyncMsg_PlatformID"); //XXX平台分配给XX共享平台的编号,6位 private static final String InterfaceNo = UserSyncMsgConfig.getValue("userSyncMsg_InterfaceNo"); //同步接口编号,两位。(01: 用户状态信息通知接口) private static String createDate; //文件产生日期,14位。格式为YYYYMMDDHHMMSS private static String day = "Day"; //文件标示 Day表示增量文件 private static String mon = "Mon"; //文件标示 Mon表示按月的全量文件 //服务器端的:每日/月源文件的保存目录 private static String userMsgfileDir = "//home//stemp//ROOT//fileDir//"; // 本地调试用的// private static String userMsgfileDir = "F:\\" + VersionNo + "\\" + InterfaceNo + "\\" + PlatformID ; //请求文件目录:每日/月源文件的保存目录 // private static String ReturnDir = RequestDir + "\\RSP"; //回执文件目录 /** * 生成每天的增量同步源文件,并远程上传到FTP服务器 */ public static void createFileDay() { //判断目录是否存在 不存在创建 directoryExists(userMsgfileDir); //获取前一天的增量内容 Listlist = getUserListDay(); String fileContent = getFileContent(list); //日期格式 SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMDDHHmmss"); // 请求文件名: createDate = sdf.format(new Date()); String fileName = InterfaceNo + PlatformID + createDate + "_" + day; String requestFileName = fileName + ".txt"; //请求文件名 System.out.println("--请求文件名---->"+requestFileName); // 生成每天增量请求文件,并将内容写入文件 File file = new File(userMsgfileDir, requestFileName); createFile(file, fileContent); uploadFile(requestFileName); } /** * 生成每月的全量的同步文件 */ public static void createFileMon() {// System.out.println("--请求文件目录(每月的)---->"+userMsgfileDir); //判断目录是否存在 不存在创建 directoryExists(userMsgfileDir); //获取全量内容 List list = getUserListAll(); String fileContent = getFileContent(list); //日期格式 SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMDDHHmmss"); //请求文件名: createDate = sdf.format(new Date()); String fileName = InterfaceNo + PlatformID + createDate + "_" + mon; String requestFileName = fileName + ".txt"; // 生成请求文件,并将内容写入文件 File file = new File(userMsgfileDir, requestFileName); createFile(file, fileContent); } /** * 得到每日的增量信息(注意:由于此处的定时器的优先级太高,还没有完全启动完就已经执行了,所以取不到数据) */ public static List getUserListDay() { // 得到当前时间 的前一天 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String date = DateUtil.getSpecifiedDayBefore(sdf.format(new Date())); // 获取前一天的增量 String hql = "from Userreg u where u.regtime BETWEEN '"+date+" 00:00:00' AND '"+date+" 24:00:00'";// String sql = "select *from userreg where bak2 between '"+date+" 00:00:00' and '"+date+" 24:00:00'"; System.out.println("--进入查询每日增量---->"+hql); return userDao.getUserList(hql); } /** * 每月一次的全量信息 */ public static List getUserListAll() { Date nowDate = new Date() ; String firstDay = DateUtil.getFirstDayOfMonth(nowDate); String lastDay = DateUtil.getLastDayOfMonth(nowDate); String hql = "from Userreg u where u.regtime BETWEEN '"+firstDay+" 00:00:00' AND '"+lastDay+" 24:00:00'"; return userDao.getUserList(hql); } /** * 文件内容格式 * @param list * @return */ private static String getFileContent(List list) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.size(); i++) { sb.append(list.get(i).getUserphone() + "," + list.get(i).getEmail()+ "," + list.get(i).getUserstate()); sb.append("\r\n"); } System.out.println("--获取文件内容格式---->"+sb.toString()); return sb.toString(); } /** * 判断目录是否存在,如果不存在,则创建 * @param dir */ private static void directoryExists(String dir) { // 保存目录 File saveDirectory = new File(dir); // 如果不存在则创建多级目录 if (!saveDirectory.exists()) { saveDirectory.mkdirs(); } } /** * 创建文件 并将内容写入文件 * @param file * @param content */ private static void createFile(File file, String content) { try { if (file.exists()) { file.delete(); file.createNewFile(); // 将内容写入文件 BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file)); bos.write(content.getBytes()); bos.flush(); bos.close(); } else { System.out.println("--写入文件内容方法---->"); file.createNewFile(); // 将内容写入文件 BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file)); bos.write(content.getBytes()); bos.flush(); bos.close(); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } /** * 远程上传文件到FTP服务器 * @param requestFileName */ private static void uploadFile(String requestFileName) { String ip = UserSyncMsgConst.IP ; int port = UserSyncMsgConst.Port ; String user =UserSyncMsgConst.User ; String pwd = UserSyncMsgConst.Pwd ; String requestDir = UserSyncMsgConst.RequestDir ; System.out.println("----ftp请求文件目录--->"+ requestDir); List fileList = new ArrayList (); File onefile = new File(userMsgfileDir,requestFileName); System.out.println("----服务器端的文件路径--->"+ onefile.getAbsolutePath()); fileList.add(onefile); FTPUtil ftpupload = new FTPUtil(ip,port,user,pwd); try { ftpupload.uploadFile(requestDir, fileList); } catch (Exception e) { e.printStackTrace(); } } /** * 远程删除FTP服务器下的请求文件目录 */ public static void deleteFilesDay() { String ip = UserSyncMsgConst.IP ; //第1台FTP服务器 int port = UserSyncMsgConst.Port ; String user =UserSyncMsgConst.User ; String pwd = UserSyncMsgConst.Pwd ; String requestDir = UserSyncMsgConst.RequestDir ; // String ip1 = UserSyncMsgConst.IP1 ; //第2台FTP服务器 FTPUtil ftpupload = new FTPUtil(ip,port,user,pwd);// FTPUtil ftpupload1 = new FTPUtil(ip1,port,user,pwd); try { ftpupload.deleteAllFile(requestDir);// ftpupload1.deleteAllFile(remotePath); } catch (Exception e) { e.printStackTrace(); } } }
3. 常量类,其实可以去掉,因为已经有了properties文件
package com.usermsgsync;/** * 配置用户同步信息常量 * @author * */public class UserSyncMsgConst { public static final String IP = UserSyncMsgConfig.getValue("userSyncMsg_FTP_IP") ; //FTP服务器的ip public static final int Port = Integer.parseInt(UserSyncMsgConfig.getValue("userSyncMsg_FTP_port")); //FTP服务器的端口 public static final String User = UserSyncMsgConfig.getValue("userSyncMsg_FTP_userName"); //FTP服务器的用户名 public static final String Pwd = UserSyncMsgConfig.getValue("userSyncMsg_FTP_passWord") ; //FTP服务器的密码 public static final String RequestDir =UserSyncMsgConfig.getValue("userSyncMsg_FTP_RequestDir") ; //FTP服务器的配置的上传目录(请求文件目录) }
4. 读取配置文件方法
package com.usermsgsync;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.util.Properties;import com.weibo.weibo4j.util.URLEncodeUtils;@SuppressWarnings("static-access") public class UserSyncMsgConfig{ private static String filePath = UserSyncMsgConfig.class.getResource("/").getPath() + "userSyncMsgConfig.properties"; public UserSyncMsgConfig() { } private static Properties props = new Properties(); static { try { String filePaths = new URLEncodeUtils().decodeURL(filePath); System.out.println(filePaths); props.load(new FileInputStream(filePaths)); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public static String getValue(String key) { return props.getProperty(key); } public static void updateProperties(String key, String value) { props.setProperty(key, value); }}
5.远程FTP处理类
package com.usermsgsync;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;import java.util.ArrayList;import java.util.List;import org.apache.commons.net.ftp.FTPClient;//import org.apache.commons.net.ftp.FTPClientConfig; import org.apache.commons.net.ftp.FTPFile;import org.apache.commons.net.ftp.FTPReply;import org.apache.log4j.Logger;/** 远程FTP处理类 * * @author suchiheng * @version 1.0, 2012/09/15 */public class FTPUtil{ private Logger logger = Logger.getLogger(FTPUtil.class); private String ip; private int port; private String pwd; private String user; private FTPClient ftpClient; private FTPUtil() { } public FTPUtil(String ip, int port, String user, String pwd) { this.ip = ip; this.port = port; this.user = user; this.pwd = pwd; } /** 连接远程FTP服务器 * * @param ip * 地址 * @param port * 端口号 * @param user * 用户名 * @param pwd * 密码 * @return * @throws Exception */ public boolean connectServer(String ip, int port, String user, String pwd) throws Exception { boolean isSuccess = false; try { ftpClient = new FTPClient(); ftpClient.connect(ip, port); ftpClient.setControlEncoding("GBK");// FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT); //此类commons-net-2.0不提供// conf.setServerLanguageCode("zh"); ftpClient.login(user, pwd); ftpClient.setFileType(FTPClient.ASCII_FILE_TYPE); if (FTPReply.isPositiveCompletion(ftpClient.getReplyCode())) { isSuccess = true; System.out.println("--连接ftp服务器成功!!!"); } else { ftpClient.disconnect(); logger.error("连不上ftp服务器!");// throw new BossOperException(); } } catch (Exception e) { logger.error("连接FTP服务器异常..", e); e.printStackTrace(); } return isSuccess; } /** 远程FTP上传文件 * * @param remotePath * @param localPath * @param files * @return * @throws Exception */ public File uploadFile(String remotePath, Listfiles) throws Exception { File fileIn = null; OutputStream os = null; FileInputStream is = null; try { for (File file : files) { if (connectServer(this.getIp(), this.getPort(), this.getUser(), this.getPwd())) { System.out.println("----进入文件上传到FTP服务器--->"); ftpClient.changeWorkingDirectory(remotePath); os = ftpClient.storeFileStream(file.getName()); fileIn = file; is = new FileInputStream(fileIn); byte[] bytes = new byte[1024]; int c; while ((c = is.read(bytes)) != -1) { os.write(bytes, 0, c); } } } } catch (Exception e) { logger.error("上传FTP文件异常: ", e); } finally { os.close(); is.close(); ftpClient.logout(); if (ftpClient.isConnected()) { ftpClient.disconnect(); } } return fileIn; } /** 远程FTP上删除一个文件 * * @param remotefilename * @return */ public boolean deleteFile(String remotefilename) { boolean flag = true; try { if (connectServer(this.getIp(), this.getPort(), this.getUser(), this.getPwd())) { flag = ftpClient.deleteFile(remotefilename); if (flag) { System.out.println("远程删除FTP文件成功!"); } else { System.out.println("-----远程删除FTP文件失败!----"); } } } catch (Exception ex) { logger.error("远程删除FTP文件异常: ", ex); ex.printStackTrace(); } return flag; } /** 远程FTP删除目录下的所有文件 * * @param remotePath * @return * @throws Exception */ public void deleteAllFile(String remotePath) throws Exception { try { if (connectServer(this.getIp(), this.getPort(), this.getUser(), this.getPwd())) { ftpClient.changeWorkingDirectory(remotePath); FTPFile[] ftpFiles = ftpClient.listFiles(); for (FTPFile file : ftpFiles) { System.out.println("----删除远程FTP服务器文件--->" + file.getName()); ftpClient.deleteFile(file.getName()); } } } catch (Exception e) { logger.error("从FTP服务器删除文件异常:", e); e.printStackTrace(); } finally { ftpClient.logout(); if (ftpClient.isConnected()) { ftpClient.disconnect(); } } } /** 远程FTP上创建目录 * * @param dir * @return */ public boolean makeDirectory(String dir) { boolean flag = true; try { if (connectServer(this.getIp(), this.getPort(), this.getUser(), this.getPwd())) { flag = ftpClient.makeDirectory(dir); if (flag) { System.out.println("make Directory " + dir + " succeed"); } else { System.out.println("make Directory " + dir + " false"); } } } catch (Exception ex) { logger.error("远程FTP生成目录异常:", ex); ex.printStackTrace(); } return flag; } /** 远程FTP下载文件 * * @param remotePath * @param localPath * @return * @throws Exception */ public List downloadFile(String remotePath, String localPath) throws Exception { List result = new ArrayList (); File fileOut = null; InputStream is = null; FileOutputStream os = null; try { if (connectServer(this.getIp(), this.getPort(), this.getUser(), this.getPwd())) { ftpClient.changeWorkingDirectory(remotePath); FTPFile[] ftpFiles = ftpClient.listFiles(); for (FTPFile file : ftpFiles) { is = ftpClient.retrieveFileStream(file.getName()); if (localPath != null && !localPath.endsWith(File.separator)) { localPath = localPath + File.separator; File path = new File(localPath); if (!path.exists()) { path.mkdirs(); } } fileOut = new File(localPath + file.getName()); os = new FileOutputStream(fileOut); byte[] bytes = new byte[1024]; int c; while ((c = is.read(bytes)) != -1) { os.write(bytes, 0, c); } result.add(fileOut); ftpClient.completePendingCommand(); os.flush(); is.close(); os.close(); } for (FTPFile file : ftpFiles) { ftpClient.deleteFile(file.getName()); } } } catch (Exception e) { logger.error("从FTP服务器下载文件异常:", e); e.printStackTrace(); } finally { ftpClient.logout(); if (ftpClient.isConnected()) { ftpClient.disconnect(); } } return result; } public String getIp() { return ip; } public void setIp(String ip) { this.ip = ip; } public int getPort() { return port; } public void setPort(int port) { this.port = port; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } public String getUser() { return user; } public void setUser(String user) { this.user = user; } /** 测试方法 * * @param args */ public static void main(String[] args) { String ip = UserSyncMsgConst.IP; int port = UserSyncMsgConst.Port; String user = UserSyncMsgConst.User; String pwd = UserSyncMsgConst.Pwd; String requestDir = UserSyncMsgConst.RequestDir; // 上传文件配置// List fileList = new ArrayList (); File onefile = new File("F:\\V010\\01\\000011\\RSP\\0100001120120701122712_Day.txt");// File onefile = new File("F:\\V010\\01\\000011\\RSP\\" ,"01000011201209263112839_Day.txt");// System.out.println("----本地文件路径--->"+ onefile.getAbsolutePath());// fileList.add(onefile); FTPUtil ftpupload = new FTPUtil(ip, port, user, pwd); try {// ftpupload.uploadFile(remotePath, fileList); //测试上传文件 // 删除文件// String remotefilename = remotePath+"01000011201209263112839_Day.txt";// System.out.println("----远程FTF上的文件名----"+remotefilename);// ftpupload.deleteFile(remotefilename); // 删除目录下所有的文件// ftpupload.deleteAllFile(RequestDir); // 下载目录下所有的文件// String localPath = "F:\\TEST\\" ;// ftpupload.downloadFile(remotePath, localPath); } catch (Exception e) { e.printStackTrace(); } }}
6. 相关时间处理类和定时器类
package com.usermsgsync.time;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;/** * 相关时间处理类 * @author suchiheng * @version 1.0, 2012/09/15 */public class DateUtil { /** * 获得指定日期的前一天 * * @param specifiedDay * @return * @throws Exception */ public static String getSpecifiedDayBefore(String specifiedDay) { Calendar c = Calendar.getInstance(); Date date = null; SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); try { date = simpleDateFormat.parse(specifiedDay); } catch (ParseException e) { e.printStackTrace(); } c.setTime(date); int day = c.get(Calendar.DATE); c.set(Calendar.DATE, day - 1); String dayBefore = simpleDateFormat.format(c.getTime()); return dayBefore; } /** * 获得指定日期的后一天 * * @param specifiedDay * @return */ public static String getSpecifiedDayAfter(String specifiedDay) { Calendar c = Calendar.getInstance(); Date date = null; SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); try { date = simpleDateFormat.parse(specifiedDay); } catch (ParseException e) { e.printStackTrace(); } c.setTime(date); int day = c.get(Calendar.DATE); c.set(Calendar.DATE, day + 1); String dayAfter = simpleDateFormat.format(c.getTime()); return dayAfter; } /** * 获取指定时间的上个月的最后一天 * @param specifiedDay * @return */ public static String getLastDayOfMonth(String specifiedDay) { Calendar c = Calendar.getInstance(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); Date date = null; try { date = simpleDateFormat.parse(specifiedDay); //转化为Date格式 } catch (ParseException e) { e.printStackTrace(); } c.setTime(date); c.add(Calendar.MONTH, -1); //获取上一个月 int maxDate = c.getActualMaximum(Calendar.DAY_OF_MONTH); c.set(Calendar.DAY_OF_MONTH, maxDate); String LastDayOfMonth = simpleDateFormat.format(c.getTime()); //格式化时间格式 return LastDayOfMonth; } /** * 获取指定时间的上个月的最后一天 * @param specifiedDay * @return */ public static String getLastDayOfMonth(Date specifiedDay) { Calendar c = Calendar.getInstance(); c.setTime(specifiedDay); c.add(Calendar.MONTH, -1); //设置上一个月 int maxDate = c.getActualMaximum(Calendar.DAY_OF_MONTH); //设置最后一天 c.set(Calendar.DAY_OF_MONTH, maxDate); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); String LastDayOfMonth = simpleDateFormat.format(c.getTime()); //格式化时间格式 return LastDayOfMonth; } /** * 获取指定时间的上个月的第一天 * @param specifiedDay * @return */ public static String getFirstDayOfMonth(String specifiedDay) { Calendar c = Calendar.getInstance(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); Date date = null; try { date = simpleDateFormat.parse(specifiedDay); //转化为Date格式 } catch (ParseException e) { e.printStackTrace(); } c.setTime(date); c.add(Calendar.MONTH, -1); //设置上一个月 int MiniDate = c.getActualMinimum(Calendar.DAY_OF_MONTH); c.set(Calendar.DAY_OF_MONTH, MiniDate); String FirstDayOfMonth = simpleDateFormat.format(c.getTime()); return FirstDayOfMonth ; } /** * 获取上个月的第一天 * @param specifiedDay * @return */ public static String getFirstDayOfMonth(Date specifiedDay) { Calendar c = Calendar.getInstance(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); c.setTime(specifiedDay); c.add(Calendar.MONTH, -1); //设置上一个月 int MiniDate = c.getActualMinimum(Calendar.DAY_OF_MONTH); c.set(Calendar.DAY_OF_MONTH, MiniDate); String FirstDayOfMonth = simpleDateFormat.format(c.getTime()); return FirstDayOfMonth ; } /** * * 方法描述:取得当前日期的上月或下月日期 ,amount=-1为上月日期,amount=1为下月日期;创建人: * @param s_DateStr * @param s_FormatStr * @return * @throws Exception */ public static String getFrontBackStrDate(String strDate,int amount) throws Exception { if (null == strDate) { return null; } try { SimpleDateFormat fmt = new SimpleDateFormat("yy-MM-dd"); Calendar c = Calendar.getInstance(); c.setTime(fmt.parse(strDate)); c.add(Calendar.MONTH, amount); return fmt.format(c.getTime()); } catch (Exception e) { e.printStackTrace(); } return ""; } /** * 返回两时间差,拼接成字符串返回 * @param time1 * @param time2 * @return */ public static String getTimeSub(Long time1, Long time2 ) { String result = ""; try { Long diff = time2 - time1; //两时间差,精确到毫秒 Long day = diff / (1000 * 60 * 60 * 24); //以天数为单位取整 Long hour=(diff/(60*60*1000)-day*24); //以小时为单位取整 Long min=((diff/(60*1000))-day*24*60-hour*60); //以分钟为单位取整 Long secone=(diff/1000-day*24*60*60-hour*60*60-min*60); result = day + "|" + hour+ "|" + min ; System.out.println("---两时间差---> " +day+"天"+hour+"小时"+min+"分"+secone+"秒"); } catch (RuntimeException e) { e.printStackTrace(); } return result ; } }
7. 定时器
package com.usermsgsync.time;import java.util.Calendar;import java.util.Date;import java.util.Timer;import javax.servlet.ServletContext;public class TimerManagerDay{ // 时间间隔 一天 private static final long PERIOD_DAY = 24 * 60 * 60 * 1000; // 调试时间(1分)// private static final long PERIOD_DAY = 60 * 1000; private ServletContext servletContext = null; public TimerManagerDay(ServletContext context) { this.servletContext = context; // 获取配置中的时间信息 String hour = this.servletContext.getInitParameter("hour"); String minute = this.servletContext.getInitParameter("minute"); Calendar calendar = Calendar.getInstance(); // 定制每日00:00点执行方法 calendar.set(Calendar.HOUR_OF_DAY, Integer.valueOf(hour)); calendar.set(Calendar.MINUTE, Integer.valueOf(minute)); // 第一次执行定时任务的时间 Date date = calendar.getTime(); // 如果第一次执行任务的时间小于当前时间 ,此时要在第一次任务的时间上加上一天,如果不加上一天 ,任务会立即执行 if (date.before(new Date())) { date = this.addDay(date, 1); } Timer time = new Timer(); // 安排指定的任务 在指定的时间 执行 UserMsgTimerTask dataTask = new UserMsgTimerTask(); time.schedule(dataTask, date, PERIOD_DAY); } /** 给时间加任意一天 * * @param date * @param num * @return */ public Date addDay(Date date, int num) { Calendar startDT = Calendar.getInstance(); startDT.setTime(date); startDT.add(Calendar.DAY_OF_MONTH, 1); // 加一天 return startDT.getTime(); }}package com.usermsgsync.time;import java.util.Calendar;import java.util.Date;import java.util.Timer;import javax.servlet.ServletContext;public class TimerManagerMon { private static final long PERIOD_DAY = 24 * 60 * 60 * 1000; //因为每月第一天不是固定的频率,所以设置为每天某个时间 private ServletContext servletContext = null; public TimerManagerMon(ServletContext context) { this.servletContext = context; // 获取配置中的时间信息 String hour = this.servletContext.getInitParameter("hour"); String minute = this.servletContext.getInitParameter("minute"); // 安排指定的任务 在指定的时间 执行 UserMsgTimerTask2 dataTask = new UserMsgTimerTask2(); // 判断时间 Date d = new Date();// 获取服务器的时间。。。 Calendar c = Calendar.getInstance(); Timer timer = new Timer(); c.setTime(d); //设置定时器的启动时间 if (c.get(Calendar.DAY_OF_MONTH) == 1) // 当前是1号 { if (c.get(Calendar.HOUR_OF_DAY) == 0 && c.get(Calendar.MINUTE) == 0) { timer.scheduleAtFixedRate(dataTask, c.getTime(), PERIOD_DAY); // 每天执行一次run()方法... } else { // 下月一号开始 c.set(Calendar.MONTH, c.get(Calendar.MONTH) + 1); // 设置为下月 c.set(Calendar.DAY_OF_MONTH, 1); // 设置为下月的1号 c.set(Calendar.HOUR_OF_DAY, Integer.valueOf(hour)); //定制每日00:00点执行方法 c.set(Calendar.MINUTE, Integer.valueOf(minute)); timer.scheduleAtFixedRate(dataTask, c.getTime(), PERIOD_DAY); // 每天执行一次run()方法... } } else // 当前不是1号 则从下个月1号开始执行定期任务 { c.set(Calendar.MONTH, c.get(Calendar.MONTH) + 1); // 设置为下月 c.set(Calendar.DAY_OF_MONTH, 1); // 设置为下月的1号 c.set(Calendar.HOUR_OF_DAY, Integer.valueOf(hour)); //定制每日00:00点执行方法 c.set(Calendar.MINUTE, Integer.valueOf(minute)); timer.scheduleAtFixedRate(dataTask, c.getTime(), PERIOD_DAY); // 每天执行一次run()方法... } }}package com.usermsgsync.time;import java.util.TimerTask;import com.usermsgsync.UserSyncMsg;public class UserMsgTimerTask extends TimerTask { @Override public void run() { try { UserSyncMsg.deleteFilesDay(); //此方法必须放在生成当天文件前面,因为获取java代码获取服务器时间并不能保证每次都能生成的是一模一样的值 UserSyncMsg.createFileDay(); } catch (Exception e) { // TODO: handle exception } }}package com.usermsgsync.time;import java.util.Calendar;import java.util.Date;import java.util.TimerTask;import com.usermsgsync.UserSyncMsg;public class UserMsgTimerTask2 extends TimerTask { @Override public void run() { try { //在方法内部判断是否为每月的第一天 Date date = new Date(); //获取服务器的时间 Calendar calendar = Calendar.getInstance(); calendar.setTime(date); if (calendar.get(Calendar.DAY_OF_MONTH) == 1 ) { UserSyncMsg.createFileMon(); } } catch (Exception e) { // TODO: handle exception } }}
8. 在web.xml中的配置
com.usermsgsync.servlet.ContextListener hour 0 minute 0
9. properties文件
userSyncMsg_VersionNo = V010userSyncMsg_PlatformID = 000011userSyncMsg_InterfaceNo = 01userSyncMsg_FTP_IP = 211.94.123.188userSyncMsg_FTP_port = 21userSyncMsg_FTP_userName = Beau VirgilluserSyncMsg_FTP_passWord = Beau VirgilluserSyncMsg_FTP_RequestDir = //home//V010//01//000011userSyncMsg_FTP_ReturnDir = //home//V010//01//000011//RSP
相关业务规范如下(截图):