数据库保存的是阳历日期,有时候会遇到把阳历换成阴历的需求,例如下图把阳历转换成阴历。
这个问题是我在开发报表过程中遇到的一个小需求,利用的工具是FineReport8.0版本,解决思路是首先定义一个可以将阳历转为阴历的类,然后自定义FineReport函数,在run方法中获取年月日参数并调用之前的类将阳历转为阴历,最终返回给报表。
实现步骤:
1、 阳历转阴历的类
FineReport里面会提供一个现成的农历日历工具类SolarToLunar,该类中通过today(intyear, int month, int day)方法可将输入的年、月、日对应的阳历转为阴历日期,完整代码如下:
package com.fr.function;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;import java.util.Locale;public class SolarToLunar { final private static long[] lunarInfo = new long[] { 0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2, 0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977, 0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970, 0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950, 0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557, 0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0, 0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0, 0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6, 0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570, 0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0, 0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5, 0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930, 0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530, 0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45, 0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0 }; final private static int[] year20 = new int[] { 1, 4, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1 }; final private static int[] year19 = new int[] { 0, 3, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0 }; final private static int[] year2000 = new int[] { 0, 3, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1 }; public final static String[] nStr1 = new String[] { "", "正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二" }; private final static String[] Gan = new String[] { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸" }; private final static String[] Zhi = new String[] { "子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥" }; private final static String[] Animals = new String[] { "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪" }; private final static String[] solarTerm = new String[] { "小寒", "大寒", "立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏", "小满", "芒种", "夏至", "小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至" }; private final static String[] sFtv = new String[] { "0101*元旦", "0214 情人节", "0308 妇女节", "0312 植树节", "0315 消费者权益日", "0401 愚人节", "0501 劳动节", "0504 青年节", "0512 护士节", "0601 儿童节", "0701 建党节", "0801 建军节", "0808 父亲节", "0909 ×××逝世纪念", "0910 教师节", "0928 孔子诞辰", "1001*国庆节", "1006 老人节", "1024 联合国日", "1112 孙中山诞辰", "1220 澳门回归", "1225 圣诞节", "1226 ×××诞辰" }; private final static String[] lFtv = new String[] { "0101*农历春节", "0115 元宵节", "0505 端午节", "0707 七夕情人节", "0815 中秋节", "0909 重阳节", "1208 腊八节", "1224 小年", "0100*除夕" }; /** * 传回农历 y年的总天数 * * @param y * @return */ final private static int lYearDays(int y) { int i, sum = 348; for (i = 0x8000; i > 0x8; i >>= 1) { if ((lunarInfo[y - 1900] & i) != 0) sum += 1; } return (sum + leapDays(y)); } /** * 传回农历 y年闰月的天数 * * @param y * @return */ final private static int leapDays(int y) { if (leapMonth(y) != 0) { if ((lunarInfo[y - 1900] & 0x10000) != 0) return 30; else return 29; } else return 0; } /** * 传回农历 y年闰哪个月 1-12 , 没闰传回 0 * * @param y * @return */ final private static int leapMonth(int y) { return (int) (lunarInfo[y - 1900] & 0xf); } /** * 传回农历 y年m月的总天数 * * @param y * @param m * @return */ final private static int monthDays(int y, int m) { if ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0) return 29; else return 30; } /** * 传回农历 y年的××× * * @param y * @return */ final public static String AnimalsYear(int y) { return Animals[(y - 4) % 12]; } /** * 传入 月日的offset 传回干支,0=甲子 * * @param num * @return */ final private static String cyclicalm(int num) { return (Gan[num % 10] + Zhi[num % 12]); } /** * 传入 offset 传回干支, 0=甲子 * * @param y * @return */ final public static String cyclical(int y) { int num = y - 1900 + 36; return (cyclicalm(num)); } /** * 传出农历.year0 .month1 .day2 .yearCyl3 .monCyl4 .dayCyl5 .isLeap6 * * @param y * @param m * @return */ final private long[] Lunar(int y, int m) { long[] nongDate = new long[7]; int i = 0, temp = 0, leap = 0; Date baseDate = new GregorianCalendar(1900 + 1900, 1, 31).getTime(); Date objDate = new GregorianCalendar(y + 1900, m, 1).getTime(); long offset = (objDate.getTime() - baseDate.getTime()) / 86400000L; if (y < 2000) offset += year19[m - 1]; if (y > 2000) offset += year20[m - 1]; if (y == 2000) offset += year2000[m - 1]; nongDate[5] = offset + 40; nongDate[4] = 14; for (i = 1900; i < 2050 && offset > 0; i++) { temp = lYearDays(i); offset -= temp; nongDate[4] += 12; } if (offset < 0) { offset += temp; i--; nongDate[4] -= 12; } nongDate[0] = i; nongDate[3] = i - 1864; leap = leapMonth(i); // 闰哪个月 nongDate[6] = 0; for (i = 1; i < 13 && offset > 0; i++) { // 闰月 if (leap > 0 && i == (leap + 1) && nongDate[6] == 0) { --i; nongDate[6] = 1; temp = leapDays((int) nongDate[0]); } else { temp = monthDays((int) nongDate[0], i); } // 解除闰月 if (nongDate[6] == 1 && i == (leap + 1)) nongDate[6] = 0; offset -= temp; if (nongDate[6] == 0) nongDate[4]++; } if (offset == 0 && leap > 0 && i == leap + 1) { if (nongDate[6] == 1) { nongDate[6] = 0; } else { nongDate[6] = 1; --i; --nongDate[4]; } } if (offset < 0) { offset += temp; --i; --nongDate[4]; } nongDate[1] = i; nongDate[2] = offset + 1; return nongDate; } /** * 传出y年m月d日对应的农历.year0 .month1 .day2 .yearCyl3 .monCyl4 .dayCyl5 .isLeap6 * * @param y * @param m * @param d * @return */ final public static long[] calElement(int y, int m, int d) { long[] nongDate = new long[7]; int i = 0, temp = 0, leap = 0; Date baseDate = new GregorianCalendar(0 + 1900, 0, 31).getTime(); Date objDate = new GregorianCalendar(y, m - 1, d).getTime(); long offset = (objDate.getTime() - baseDate.getTime()) / 86400000L; nongDate[5] = offset + 40; nongDate[4] = 14; for (i = 1900; i < 2050 && offset > 0; i++) { temp = lYearDays(i); offset -= temp; nongDate[4] += 12; } if (offset < 0) { offset += temp; i--; nongDate[4] -= 12; } nongDate[0] = i; nongDate[3] = i - 1864; leap = leapMonth(i); // 闰哪个月 nongDate[6] = 0; for (i = 1; i < 13 && offset > 0; i++) { // 闰月 if (leap > 0 && i == (leap + 1) && nongDate[6] == 0) { --i; nongDate[6] = 1; temp = leapDays((int) nongDate[0]); } else { temp = monthDays((int) nongDate[0], i); } // 解除闰月 if (nongDate[6] == 1 && i == (leap + 1)) nongDate[6] = 0; offset -= temp; if (nongDate[6] == 0) nongDate[4]++; } if (offset == 0 && leap > 0 && i == leap + 1) { if (nongDate[6] == 1) { nongDate[6] = 0; } else { nongDate[6] = 1; --i; --nongDate[4]; } } if (offset < 0) { offset += temp; --i; --nongDate[4]; } nongDate[1] = i; nongDate[2] = offset + 1; return nongDate; } public final static String getChinaDate(int day) { String a = ""; if (day == 10) return "初十"; if (day == 20) return "二十"; if (day == 30) return "三十"; int two = (int) ((day) / 10); if (two == 0) a = "初"; if (two == 1) a = "十"; if (two == 2) a = "廿"; if (two == 3) a = "三"; int one = (int) (day % 10); switch (one) { case 1: a += "一"; break; case 2: a += "二"; break; case 3: a += "三"; break; case 4: a += "四"; break; case 5: a += "五"; break; case 6: a += "六"; break; case 7: a += "七"; break; case 8: a += "八"; break; case 9: a += "九"; break; } return a; } public static String today(int y, int m, int d) { int year = y; int month = m; int date = d; long[] l = calElement(year, month, date); StringBuffer sToday = new StringBuffer(); try { sToday.append(" 农历"); sToday.append(cyclical(year)); sToday.append('('); sToday.append(AnimalsYear(year)); sToday.append(")年"); sToday.append(nStr1[(int) l[1]]); sToday.append("月"); sToday.append(getChinaDate((int) (l[2]))); return sToday.toString(); } finally { sToday = null; } } private static SimpleDateFormat sdf = new SimpleDateFormat( "yyyy年M月d日 EEEEE"); /** * 农历日历工具使用演示 * * @param args */ public static void main(String[] args) { System.out.println(today(1988, 10, 27)); }}
2、自定义FineReport函数
自定义函数Lunar扩展于AbstractFunction,并重写run方法,获得年月日参数值,调用农历日历工具类SolarToLunar的today方法,求得农历日期并返回,代码如下:
package com.fr.function; import com.fr.script.AbstractFunction; public class Lunar extends AbstractFunction { public Object run(Object[] args) { String result = ""; int y = Integer.parseInt(args[0].toString()); int m = Integer.parseInt(args[1].toString()); int d = Integer.parseInt(args[2].toString()); result = SolarToLunar.today(y, m, d); return result; } }
3、编译并运行
编译自定义函数
编译Lunar.java和SolarToLunar.java类生成Lunar.class和SolarToLunar.class文件拷贝至报表应用所在目录/WEB-INF/classes/com/fr/function下。
注册自定义函数
启动设计器,点击服务器|函数管理器,新增函数取名为Lunar,选择Lunar.class类,如下图:
自定义函数定义好了就可以在设计器中直接使用。
比如在单元格中写入公式=Lunar(2011,7,11),预览模板,可以看到日期2011年7月11日阳历就可以转换成阴历。
若数据库日期类型字段如图:
拖到模板设计界面,设置高级属性,在自定义显示值里面输入公式Lunar(year($),month($),day($$$)),如下图设置,则可把保存在数据库里面的阳历日期转换成阴历了。