SpringBoot - 日期转换器

格式化时间工具类,对 apache 提供的 FaseDateFormat 工具做了封装,使用更方便 :

支持的日期常量:

package com.test;

/**
 * 日期常量定义
 *
 * @author Demon-HY
 */
public class DateConstants {

    /**
     * 2018-12
     */
    public final static String yyyyMM = \"yyyy-MM\";
    /**
     * 201812
     */
    public final static String yyyyMM_ = \"yyyyMM\";
    /**
     * 2018-12-12
     */
    public final static String yyyyMMdd = \"yyyy-MM-dd\";
    /**
     * 20181212
     */
    public final static String yyyyMMdd_ = \"yyyyMMdd\";
    /**
     * 2018-12-12 12:12
     */
    public final static String yyyyMMddHHmm = \"yyyy-MM-dd HH:mm\";
    /**
     * 201812121212
     */
    public final static String yyyyMMddHHmm_ = \"yyyyMMddHHmm\";
    /**
     * 2018-12-12 12:12:12
     */
    public final static String yyyyMMddHHmmss = \"yyyy-MM-dd HH:mm:ss\";
    /**
     * 20181212121212
     */
    public final static String yyyyMMddHHmmss_ = \"yyyyMMddHHmmss\";
    /**
     * 2018-12-12 12:12:12:000
     */
    public final static String yyyyMMddHHmmssSSS = \"yyyy-MM-dd HH:mm:ss:SSS\";
    /**
     * 2018-12-12 12:12:12.000
     */
    public final static String yyyyMMddHHmmssSSS_D = \"yyyy-MM-dd HH:mm:ss.SSS\";
    /**
     * 2018-12-12\'T\'12:12:12.000+0800
     */
    public final static String yyyyMMddHHmmssSSS_TZ = \"yyyy-MM-dd\'T\'HH:mm:ss.SSSZ\";
    /**
     * 20181212121212000
     */
    public final static String yyyyMMddHHmmssSSS_ = \"yyyyMMddHHmmssSSS\";
}

日期转换器:

package com.test;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.FastDateFormat;

import java.text.ParseException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * 日期转换器
 *
 * @author Demon-HY
 */
public class DateConvert {

    private final static Map<String, FastDateFormat> regexFormatMap = new HashMap<>();

    static {
        regexFormatMap.put(\"\\\\d{4}-\\\\d{1,2}\", FastDateFormat.getInstance(DateConstants.yyyyMM));
        regexFormatMap.put(\"\\\\d{4}-\\\\d{1,2}-\\\\d{1,2}\", FastDateFormat.getInstance(DateConstants.yyyyMMdd));
        regexFormatMap.put(\"\\\\d{4}-\\\\d{1,2}-\\\\d{1,2} \\\\d{1,2}\\\\:\\\\d{1,2}\", FastDateFormat.getInstance(DateConstants.yyyyMMddHHmm));
        regexFormatMap.put(\"\\\\d{4}-\\\\d{1,2}-\\\\d{1,2} \\\\d{1,2}\\\\:\\\\d{1,2}\\\\:\\\\d{1,2}\", FastDateFormat.getInstance(DateConstants.yyyyMMddHHmmss));
        regexFormatMap.put(\"\\\\d{4}-\\\\d{1,2}-\\\\d{1,2} \\\\d{1,2}\\\\:\\\\d{1,2}\\\\:\\\\d{1,2}:\\\\d{1,3}\", FastDateFormat.getInstance(DateConstants.yyyyMMddHHmmssSSS));
        regexFormatMap.put(\"\\\\d{4}-\\\\d{1,2}-\\\\d{1,2} \\\\d{1,2}\\\\:\\\\d{1,2}\\\\:\\\\d{1,2}.\\\\d{1,3}\", FastDateFormat.getInstance(DateConstants.yyyyMMddHHmmssSSS_D));
        regexFormatMap.put(\"\\\\d{4}-\\\\d{1,2}-\\\\d{1,2}T\\\\d{1,2}\\\\:\\\\d{1,2}\\\\:\\\\d{1,2}.\\\\d{1,3}Z\", FastDateFormat.getInstance(DateConstants.yyyyMMddHHmmssSSS_TZ));
        regexFormatMap.put(\"\\\\d{4}-\\\\d{1,2}-\\\\d{1,2}T\\\\d{1,2}\\\\:\\\\d{1,2}\\\\:\\\\d{1,2}.\\\\d{1,3}\\\\+\\\\d{1,4}\", FastDateFormat.getInstance(DateConstants.yyyyMMddHHmmssSSS_TZ));

    }

    /**
     * 解析时间字符串,支持的格式 {@link DateConstants}
     *
     * @param source 时间字符串
     * @return Date
     */
    public static Date parse(String source) {
        return parse(source, null);
    }

    /**
     * 解析时间字符串
     *
     * @param source     时间字符串
     * @param dataFormat 时间格式,可以为空
     * @return Date
     */
    public static Date parse(String source, String dataFormat) {
        if (StringUtils.isBlank(source)) {
            return null;
        }

        if (StringUtils.isNotBlank(dataFormat)) {
            try {
                return FastDateFormat.getInstance(dataFormat).parse(source);
            } catch (ParseException e) {
                throw new IllegalArgumentException(\"Invalid Parse date value \'\" + source + \"\'\", e);
            }
        }

        for (Map.Entry<String, FastDateFormat> entry : regexFormatMap.entrySet()) {
            String regex = entry.getKey();
            if (source.matches(regex)) {
                try {
                    return entry.getValue().parse(source);
                } catch (ParseException e) {
                    throw new IllegalArgumentException(\"Invalid Parse date value \'\" + source + \"\'\", e);
                }
            }
        }

        throw new IllegalArgumentException(\"Invalid date value \'\" + source + \"\'\");
    }

    /**
     * 格式化时间
     *
     * @param date       时间
     * @param dataFormat 时间格式
     * @return 格式化后的时间
     */
    public static String format(Date date, String dataFormat) {
        return FastDateFormat.getInstance(dataFormat).format(date);
    }
}