spring mvc data jpa maven demo 全注解

package com.ld.utils; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.List; import java.util.Locale; import org.apache.commons.lang3.time.DateUtils; /** * @author 刘迪 日期类型处理类 2014-1-20 下午1:19:35 */ public class MyDateUtil extends DateUtils{ public static final String FORMAT_DATETIME = "yyyy-MM-dd HH:mm:ss"; public static final String FORMAT_DATE = "yyyy-MM-dd"; private static SimpleDateFormat SDF; /** * getDate() method. * * @author 刘迪 * @date 2014-1-20 下午1:27:29 * <p> * 转换字符串为指定格式日期时间 * </p> * @param dtstring * 字符型日期 * @param pattern * 需要转换的格式 * @return Date 转换后的日期 */ public static Date getDate(String dtstring, String pattern) { int pmIndex = dtstring.toUpperCase().indexOf("PM"); int amIndex = dtstring.toUpperCase().indexOf("AM"); int aIndex = pattern.indexOf("a"); if ((pmIndex >= 0 || amIndex >= 0) && aIndex == -1) { if (pattern.indexOf("HH:mm:ss") != -1) pattern = pattern.replaceAll("HH:mm:ss", "hh:mm:ss a"); else pattern = pattern.replaceAll("hh:mm:ss", "hh:mm:ss a"); } if (pmIndex == -1 && amIndex == -1 && aIndex >= 0) { pattern = pattern.replaceAll("hh:mm:ss a", "HH:mm:ss"); } SDF = new SimpleDateFormat(pattern, Locale.getDefault()); Date date = null; try { date = SDF.parse(dtstring); } catch (Exception e) { } if (date == null) { try { SDF = new SimpleDateFormat(pattern, Locale.US); date = SDF.parse(dtstring); } catch (Exception e) { } } if (date == null) { try { SDF = new SimpleDateFormat(pattern, Locale.CHINA); date = SDF.parse(dtstring); } catch (Exception e) { } } if (amIndex >= 0) {// 解决 12:15 AM 类似问题, 应该是 00:15 AM Calendar cal = Calendar.getInstance(); cal.setTime(date); if (cal.get(Calendar.HOUR_OF_DAY) == 12) { cal.add(Calendar.HOUR_OF_DAY, -12); date = cal.getTime(); } } return date; } /** * convertString() method. * * @author 刘迪 * @date 2014-1-20 下午1:57:06 * <p> * 转换日期类型为指定格式字符串 * </p> * @param date * 日期 * @param pattern * 需要转换的格式 * @return String 转换后的日期字符串 */ public static String convertString(Date date, String pattern) { SDF = new SimpleDateFormat(pattern); try { return SDF.format(date); } catch (Exception e) { e.printStackTrace(); return null; } } /** * getDateTimeByString() method. * * @author 刘迪 * @date 2014-1-20 下午1:41:51 * <p> * 日期转换 * </p> * @param dtstring * @return Date 返回带时分秒的日期 */ public static Date getDateTimeByString(String dtstring) { return getDate(dtstring, FORMAT_DATETIME); } /** * getDateByString() method. * * @author 刘迪 * @date 2014-1-20 下午1:44:01 * <p> * 日期转换 * </p> * @param dtstring * @return Date 只返回年月日 */ public static Date getDateByString(String dtstring) { return getDate(dtstring, FORMAT_DATE); } /** * getStringByDateTime() method. * * @author 刘迪 * @date 2014-1-20 下午1:58:29 * <p> * 日期转换 * </p> * @param date * @return String 返回包含时分秒的字符串日期 */ public static String getStringByDateTime(Date date) { return convertString(date, FORMAT_DATETIME); } /** * getStringByDate() method. * * @author 刘迪 * @date 2014-1-20 下午1:59:07 * <p> * 日期转换 * </p> * @param date * @return * @return String 仅返回年月日字符串 */ public static String getStringByDate(Date date) { return convertString(date, FORMAT_DATE); } /** * getStringByDate() method. * * @author 刘迪 * @date 2014-9-4 下午3:36:57 * <p> * 转换日期为指定格式字符串 * </p> * @param date * @param pattern * @return * @return String */ public static String getStringByDate(Date date, String pattern) { return convertString(date, pattern); } /** * getDateByDate() method. * * @author 刘迪 * @date 2014-1-20 下午1:47:22 * <p> * 日期转换 * </p> * @param day * 日期类型 * @return Date 只保留年月日 */ public static Date getDateByDateTime(Date day) { return truncate(day, Calendar.DAY_OF_MONTH); } /** * calculateSeconds() method. * * @author 刘迪 * @date 2014-1-20 下午3:46:29 * <p> * 计算两个时间相差的秒 * </p> * @param sDay * 起码日期 * @param eDay * 结束日期 * @return int */ public static int calculateSeconds(Date sDay, Date eDay) { return minusDateSeconds(sDay.getTime(), eDay.getTime()); } public static int calculateSeconds(Calendar sDay, Calendar eDay) { return minusDateSeconds(sDay.getTimeInMillis(), eDay.getTimeInMillis()); } private static int minusDateSeconds(Long startSeconds, Long endSeconds) { return (int) ((endSeconds - startSeconds) / 1000); } /** * calculateMintues() method. * * @author 刘迪 * @date 2014-1-20 下午4:06:11 * <p> * 计算两个时间相差的分钟 * </p> * @param sDay * @param eDay * @return double */ public static double calculateMintues(Date sDay, Date eDay) { return minusMinutes(minusDateSeconds(sDay.getTime(), eDay.getTime())); } public static double calculateMintues(Calendar sDay, Calendar eDay) { return minusMinutes(minusDateSeconds(sDay.getTimeInMillis(), eDay.getTimeInMillis())); } private static double minusMinutes(Integer seconds) { return Math.abs(seconds / (60 * 1.0)); } /** * calculateHours() method. * * @author 刘迪 * @date 2014-1-20 下午4:05:43 * <p> * 计算两个时间相差的小时 * </p> * @param sDay * @param eDay * @return double */ public static double calculateHours(Date sDay, Date eDay) { return minusHours(minusDateSeconds(sDay.getTime(), eDay.getTime())); } public static double calculateHours(Calendar sDay, Calendar eDay) { return minusHours(minusDateSeconds(sDay.getTimeInMillis(), eDay.getTimeInMillis())); } private static double minusHours(Integer seconds) { return seconds / (60 * 60 * 1.0); } /** * daysBetween() method. * * @author 刘迪 * @date 2014-1-20 下午3:42:37 * <p> * 计算两个日期相差的天数 * </p> * @param sDay * @param eDay * @return int */ public static int calculateDay(Date sDay, Date eDay) { Calendar s = Calendar.getInstance(); s.setTime(sDay); Calendar e = Calendar.getInstance(); e.setTime(eDay); return calculateDay(s, e); } public static int calculateDay(Calendar sDay, Calendar eDay) { sDay = truncate(sDay, Calendar.DAY_OF_MONTH); eDay = truncate(eDay, Calendar.DAY_OF_MONTH); return (int) (minusDateSeconds(sDay.getTimeInMillis(), eDay.getTimeInMillis()) / (60 * 60 * 24)); } /** * calculateDay() method. * * @author 刘迪 * @date 2014-1-20 下午5:11:05 * <p> * 增减天数 * </p> * @param day * @param num * @return Date */ public static Date calculateAddDay(Date day, int num) { return calculateMinusOrPlus(day, Calendar.DAY_OF_MONTH, num); } public static Date calculateAddDay(Calendar day, int num) { return calculateMinusOrPlus(day, Calendar.DAY_OF_MONTH,