【Java工具十一】java 各种日期的转换

蔚落 2022-05-16 06:54 214阅读 0赞

package com.risenb.util;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import java.text.ParsePosition;
    import java.text.SimpleDateFormat;
    import java.util.*;
    import static java.util.Calendar.WEEK_OF_MONTH;
    import static java.util.Calendar.WEEK_OF_YEAR;
    
    public class DateUtilTest {
        private static final Logger logger = LoggerFactory.getLogger(DateUtilTest.class);
        private static final ThreadLocal<SimpleDateFormat> threadLocal = new ThreadLocal();
        private static final Object object = new Object();
    
        public DateUtilTest() {
        }
    
        /**
         * "2018-08-14 15:33""
         * 通过日期字符串返回SimpleDateFormat 对象
         * @param pattern
         * @return
         * @throws RuntimeException
         */
        private static SimpleDateFormat getDateFormat(String pattern) throws RuntimeException {
            SimpleDateFormat dateFormat = (SimpleDateFormat)threadLocal.get();
            if(dateFormat == null) {
                Object var2 = object;
                synchronized(object) {
                    if(dateFormat == null) {
                        dateFormat = new SimpleDateFormat(pattern);
                        dateFormat.setLenient(false);
                        threadLocal.set(dateFormat);
                    }
                }
            }
    
            dateFormat.applyPattern(pattern);
            return dateFormat;
        }
    
    
        //1：年 2：月，要加1 3：今年第几周 4：这个月第几周 5：日 6：今年第几天 7：一周中的第几天（有的以周日为开始）
    
        //8:某月中第几周
        private static int getInteger(Date date, int dateType) {
            int num = 0;
            Calendar calendar = Calendar.getInstance();
            if(date != null) {
                calendar.setTime(date);
                num = calendar.get(dateType);
            }
    
            return num;
        }
    
        /**
         * 在给定的日期和类型上相加（例如：date==》"2018-08-14 15:32"，dateType：1（年），amount：2）
         * 结果为 2020-08-14 15:32
         * @param date 日期字符串
         * @param dateType 类型
         * @param amount
         * @return
         */
        private static String addInteger(String date, int dateType, int amount) {
            String dateString = null;
            DateStyle dateStyle = getDateStyle(date);
            if(dateStyle != null) {
                Date myDate = StringToDate(date, dateStyle);
                myDate = addInteger(myDate, dateType, amount);
                dateString = DateToString(myDate, dateStyle);
            }
    
            return dateString;
        }
    
        /**
         * 当前日期 2018-08-14 15:32
         * 在给定的日期和类型上相加（例如：date==》new Date()，dateType：1（年），amount：2）
         * 结果为 2020-08-14 15:32
         * @param date 日期字符串
         * @param dateType 类型
         * @param amount
         * @return
         */
        private static Date addInteger(Date date, int dateType, int amount) {
            Date myDate = null;
            if(date != null) {
                Calendar calendar = Calendar.getInstance();
                calendar.setTime(date);
                calendar.add(dateType, amount);
                myDate = calendar.getTime();
            }
    
            return myDate;
        }
    
    
        /**
         * 通过时间戳获取Date对象
         *
         * @param timestamps
         * @return
         */
        private static Date getAccurateDate(List<Long> timestamps) {
            Date date = null;
            long timestamp = 0L;
            HashMap map = new HashMap();
            ArrayList absoluteValues = new ArrayList();
            if(timestamps != null && timestamps.size() > 0) {
                if(timestamps.size() > 1) {
                    for(int minAbsoluteValue = 0; minAbsoluteValue < timestamps.size(); ++minAbsoluteValue) {
                        for(int j = minAbsoluteValue + 1; j < timestamps.size(); ++j) {
                            long timestampsLastTmp = Math.abs(((Long)timestamps.get(minAbsoluteValue)).longValue() - ((Long)timestamps.get(j)).longValue());
                            absoluteValues.add(Long.valueOf(timestampsLastTmp));
                            long[] timestampTmp = new long[]{((Long)timestamps.get(minAbsoluteValue)).longValue(), ((Long)timestamps.get(j)).longValue()};
                            map.put(Long.valueOf(timestampsLastTmp), timestampTmp);
                        }
                    }
    
                    long var13 = -1L;
                    if(!absoluteValues.isEmpty()) {
                        var13 = ((Long)absoluteValues.get(0)).longValue();
    
                        for(int var14 = 1; var14 < absoluteValues.size(); ++var14) {
                            if(var13 > ((Long)absoluteValues.get(var14)).longValue()) {
                                var13 = ((Long)absoluteValues.get(var14)).longValue();
                            }
                        }
                    }
    
                    if(var13 != -1L) {
                        long[] var15 = (long[])map.get(Long.valueOf(var13));
                        long dateOne = var15[0];
                        long dateTwo = var15[1];
                        if(absoluteValues.size() > 1) {
                            timestamp = Math.abs(dateOne) > Math.abs(dateTwo)?dateOne:dateTwo;
                        }
                    }
                } else {
                    timestamp = ((Long)timestamps.get(0)).longValue();
                }
            }
    
            if(timestamp != 0L) {
                date = new Date(timestamp);
            }
    
            return date;
        }
    
        /**
         * 判断是否是日期格式
         *
         * @param date
         * @return
         */
        public static boolean isDate(String date) {
            boolean isDate = false;
            if(date != null && getDateStyle(date) != null) {
                isDate = true;
            }
    
            return isDate;
        }
    
        /**
         * YYYY_MM_DD("yyyy-MM-dd", false),
         *获取枚举的YYYY_MM_DD
         * @param date
         * @return
         */
        public static DateStyle getDateStyle(String date) {
            DateStyle dateStyle = null;
            HashMap map = new HashMap();
            ArrayList timestamps = new ArrayList();
            DateStyle[] accurateDate = DateStyle.values();
            int len$ = accurateDate.length;
    
            for(int i$ = 0; i$ < len$; ++i$) {
                DateStyle style = accurateDate[i$];
                if(!style.isShowOnly()) {
                    Date dateTmp = null;
                    if(date != null) {
                        try {
                            ParsePosition e = new ParsePosition(0);
                            dateTmp = getDateFormat(style.getValue()).parse(date, e);
                            if(e.getIndex() != date.length()) {
                                dateTmp = null;
                            }
                        } catch (Exception var10) {
                            logger.debug("获取日期字符串的日期风格失败！", var10);
                        }
                    }
    
                    if(dateTmp != null) {
                        timestamps.add(Long.valueOf(dateTmp.getTime()));
                        map.put(Long.valueOf(dateTmp.getTime()), style);
                    }
                }
            }
    
            Date var11 = getAccurateDate(timestamps);
            if(var11 != null) {
                dateStyle = (DateStyle)map.get(Long.valueOf(var11.getTime()));
            }
    
            return dateStyle;
        }
    
        /**
         * 日期字符串转Date日期
         *
         * @param date
         * @return
         */
        public static Date StringToDate(String date) {
            DateStyle dateStyle = getDateStyle(date);
            return StringToDate(date, dateStyle);
        }
    
        /**
         * 将日期字符串转化为日期
         *
         * @param date
         * @param pattern
         * @return
         */
        public static Date StringToDate(String date, String pattern) {
            Date myDate = null;
            if(date != null) {
                try {
                    myDate = getDateFormat(pattern).parse(date);
                } catch (Exception var4) {
                    logger.debug("将日期字符串转化为日期失败！", var4);
                }
            }
    
            return myDate;
        }
    
    
        /**
         *
         * @param date 2018-08-15 15:21
         * @param dateStyle DateStyle.YYYY_MM_DD_HH_MM
         * @return
         */
        public static Date StringToDate(String date, DateStyle dateStyle) {
            Date myDate = null;
            if(dateStyle != null) {
                myDate = StringToDate(date, dateStyle.getValue());
            }
    
            return myDate;
        }
    
        /**
         * 把date日期转化为指定的字符串日期格式
         * new Date(),"yyyy年MM月dd日 HH:mm:ss"
         * @param date
         * @param pattern
         * @return
         */
        public static String DateToString(Date date, String pattern) {
            String dateString = null;
            if(date != null) {
                try {
                    dateString = getDateFormat(pattern).format(date);
                } catch (Exception var4) {
                    logger.debug("将日期转化为日期字符串失败！", var4);
                }
            }
    
            return dateString;
        }
    
        public static String DateToString(Date date, DateStyle dateStyle) {
            String dateString = null;
            if(dateStyle != null) {
                dateString = DateToString(date, dateStyle.getValue());
            }
    
            return dateString;
        }
    
        public static String StringToString(String date, String newPattern) {
            DateStyle oldDateStyle = getDateStyle(date);
            return StringToString(date, oldDateStyle, newPattern);
        }
    
        public static String StringToString(String date, DateStyle newDateStyle) {
            DateStyle oldDateStyle = getDateStyle(date);
            return StringToString(date, oldDateStyle, newDateStyle);
        }
    
        public static String StringToString(String date, String olddPattern, String newPattern) {
            return DateToString(StringToDate(date, olddPattern), newPattern);
        }
    
        public static String StringToString(String date, DateStyle olddDteStyle, String newParttern) {
            String dateString = null;
            if(olddDteStyle != null) {
                dateString = StringToString(date, olddDteStyle.getValue(), newParttern);
            }
    
            return dateString;
        }
    
        public static String StringToString(String date, String olddPattern, DateStyle newDateStyle) {
            String dateString = null;
            if(newDateStyle != null) {
                dateString = StringToString(date, olddPattern, newDateStyle.getValue());
            }
    
            return dateString;
        }
    
        public static Long getNow(){
    
            Long time = System.currentTimeMillis()/1000;
            return time;
        }
    
    
        public static Long getSecond(Long second){
            if (null == second) return 0L;
            Long time = second/1000;
            return time;
        }
    
        public static String StringToString(String date, DateStyle olddDteStyle, DateStyle newDateStyle) {
            String dateString = null;
            if(olddDteStyle != null && newDateStyle != null) {
                dateString = StringToString(date, olddDteStyle.getValue(), newDateStyle.getValue());
            }
    
            return dateString;
        }
    
        /**
         * 时间戳转日期
         *
         * @param seconds
         * @param format
         * @return
         */
        public static String timeStamp2Date(String seconds,String format) {
            if(seconds == null || seconds.isEmpty() || seconds.equals("null")){
                return "";
            }
            if(format == null || format.isEmpty()){
                format = "yyyy.MM.dd HH:mm";
            }
            SimpleDateFormat sdf = new SimpleDateFormat(format);
            return sdf.format(new Date(Long.valueOf(seconds+"000")));
        }
    
    
        public static void main(String[] args) {
            String s = "2018-10-15 15:32";
            System.out.println(addYear(s,1));
        }
        /*当前日期年份添加  例：2018-10-15 15:32 加1 2019-10-15 15:32*/
        public static String addYear(String date, int yearAmount) {
            return addInteger((String)date, 1, yearAmount);
        }
    
        //当前年份加n年
        public static Date addYear(Date date, int yearAmount) {
            return addInteger((Date)date, 1, yearAmount);
        }
        //添加月
        public static String addMonth(String date, int monthAmount) {
            return addInteger((String)date, 2, monthAmount);
        }
        //添加月
        public static Date addMonth(Date date, int monthAmount) {
            return addInteger((Date)date, 2, monthAmount);
        }
        //添加天
        public static String addDay(String date, int dayAmount) {
            return addInteger((String)date, 5, dayAmount);
        }
        //添加天
        public static Date addDay(Date date, int dayAmount) {
            return addInteger((Date)date, 5, dayAmount);
        }
    
        public static String addHour(String date, int hourAmount) {
            return addInteger((String)date, 11, hourAmount);
        }
    
        public static Date addHour(Date date, int hourAmount) {
            return addInteger((Date)date, 11, hourAmount);
        }
    
        public static String addMinute(String date, int minuteAmount) {
            return addInteger((String)date, 12, minuteAmount);
        }
    
        public static Date addMinute(Date date, int minuteAmount) {
            return addInteger((Date)date, 12, minuteAmount);
        }
    
        public static String addSecond(String date, int secondAmount) {
            return addInteger((String)date, 13, secondAmount);
        }
    
        public static Date addSecond(Date date, int secondAmount) {
            return addInteger((Date)date, 13, secondAmount);
        }
    
        public static int getYear(String date) {
            return getYear(StringToDate(date));
        }
    
        public static int getYear(Date date) {
            return getInteger(date, 1);
        }
    
        public static int getMonth(String date) {
            return getMonth(StringToDate(date));
        }
    
        public static int getMonth(Date date) {
            return getInteger(date, 2) + 1;
        }
    
        public static int getDay(String date) {
            return getDay(StringToDate(date));
        }
    
        public static int getDay(Date date) {
            return getInteger(date, 5);
        }
    
        public static int getHour(String date) {
            return getHour(StringToDate(date));
        }
    
        public static int getHour(Date date) {
            return getInteger(date, 11);
        }
    
        public static int getMinute(String date) {
            return getMinute(StringToDate(date));
        }
    
        public static int getMinute(Date date) {
            return getInteger(date, 12);
        }
    
        public static int getSecond(String date) {
            return getSecond(StringToDate(date));
        }
    
        public static int getSecond(Date date) {
            return getInteger(date, 13);
        }
    
        public static String getDate(String date) {
            return StringToString(date, DateStyle.YYYY_MM_DD);
        }
    
        public static String getDate(Date date) {
            return DateToString(date, DateStyle.YYYY_MM_DD);
        }
    
        public static String getTime(String date) {
            return StringToString(date, DateStyle.HH_MM_SS);
        }
    
        public static String getTime(Date date) {
            return DateToString(date, DateStyle.HH_MM_SS);
        }
    
    
    
        public static int getIntervalDays(String date, String otherDate) {
            return getIntervalDays(StringToDate(date), StringToDate(otherDate));
        }
    
        public static int getIntervalDays(Date date, Date otherDate) {
            int num = -1;
            Date dateTmp = StringToDate(getDate(date), DateStyle.YYYY_MM_DD);
            Date otherDateTmp = StringToDate(getDate(otherDate), DateStyle.YYYY_MM_DD);
            if(dateTmp != null && otherDateTmp != null) {
                long time = Math.abs(dateTmp.getTime() - otherDateTmp.getTime());
                num = (int)(time / 86400000L);
            }
    
            return num;
        }
    }

package com.risenb.util;
    
    /**
     * Created by 143413 on 2016/12/6.
     */
    
    public enum DateStyle {
        YYYY_MM("yyyy-MM", false),
        YYYY_MM_DD("yyyy-MM-dd", false),
        YYYY_MM_DD_HH_MM("yyyy-MM-dd HH:mm", false),
        YYYY_MM_DD_HH_MM_SS("yyyy-MM-dd HH:mm:ss", false),
        YYYY_MM_EN("yyyy/MM", false),
        YYYY_MM_DD_EN("yyyy/MM/dd", false),
        YYYY_MM_DD_HH_MM_EN("yyyy/MM/dd HH:mm", false),
        YYYY_MM_DD_HH_MM_SS_EN("yyyy/MM/dd HH:mm:ss", false),
        YYYY_MM_CN("yyyy年MM月", false),
        YYYY_MM_DD_CN("yyyy年MM月dd日", false),
        YYYY_MM_DD_HH_MM_CN("yyyy年MM月dd日 HH:mm", false),
        YYYY_MM_DD_HH_MM_SS_CN("yyyy年MM月dd日 HH:mm:ss", false),
        HH_MM("HH:mm", true),
        HH_MM_SS("HH:mm:ss", true),
        MM_DD("MM-dd", true),
        MM_DD_HH_MM("MM-dd HH:mm", true),
        MM_DD_HH_MM_SS("MM-dd HH:mm:ss", true),
        MM_DD_EN("MM/dd", true),
        MM_DD_HH_MM_EN("MM/dd HH:mm", true),
        MM_DD_HH_MM_SS_EN("MM/dd HH:mm:ss", true),
        MM_DD_CN("MM月dd日", true),
        MM_DD_HH_MM_CN("MM月dd日 HH:mm", true),
        MM_DD_HH_MM_SS_CN("MM月dd日 HH:mm:ss", true);
    
        private String value;
        private boolean isShowOnly;
    
        private DateStyle(String value, boolean isShowOnly) {
            this.value = value;
            this.isShowOnly = isShowOnly;
        }
    
        public String getValue() {
            return this.value;
        }
    
        public boolean isShowOnly() {
            return this.isShowOnly;
        }
    }

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