万能字符串转日期格式

package com.corp.api.common.utils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Pattern;
import java.util.stream.Stream;

public class DateFormatUtils {

private static class DatePatternTuple {
    private final Pattern pattern;
    private final String datePattern;

    DatePatternTuple(final String pattern, final String datePattern) {
        this.pattern = Pattern.compile(pattern);
        this.datePattern = datePattern;
    }

    boolean matches(String candidate) {
        return pattern.matcher(candidate).matches();
    }

    SimpleDateFormat dateFormat() {
        return new SimpleDateFormat(datePattern);
    }
}

private static final DatePatternTuple[] DATE_PATTERN_TUPLES = {
        new DatePatternTuple("\d{4}/\d{1,2}/\d{1,2} \d{2}:\d{2}:\d{2}", "yyyy/MM/dd HH:mm:ss"),
        new DatePatternTuple("\d{4}/\d{1,2}/\d{1,2}", "yyyy/MM/dd"),
        new DatePatternTuple("\d{4}-\d{1,2}-\d{1,2} \d{2}:\d{2}:\d{2}", "yyyy-MM-dd HH:mm:ss"),
        new DatePatternTuple("\d{4}-\d{1,2}-\d{1,2}", "yyyy-MM-dd"),
        new DatePatternTuple("\d{4}年\d{1,2}月\d{1,2}日\d{2}时\d{2}分\d{2}秒", "yyyy年MM月dd日HH时mm分ss秒"),
        new DatePatternTuple("\d{1,2}/\d{1,2}/\d{4} \d{2}:\d{2}:\d{2}", "dd/MM/yyyy HH:mm:ss"),
        new DatePatternTuple("\w{3,4} \d{2} \d{2}:\d{2}:\d{2} \d{4}", " MMM dd HH:mm:ss yyyy")
};


public static Date freeFormatDateParser(String dateStr) {
    return Stream.of(DATE_PATTERN_TUPLES)
            .filter(t -> t.matches(dateStr))
            .map(DatePatternTuple::dateFormat)
            .filter(t -> matches(t, dateStr))
            .map(t -> parse(t, dateStr))
            .findFirst()
            .orElse(null);
}

private static boolean matches(SimpleDateFormat dateFormat, String dateStr) {
    try {
        dateFormat.parse(dateStr);
        return true;
    } catch (ParseException e) {
        return false;
    }
}

private static Date parse(SimpleDateFormat dateFormat, String dateStr) {
    try {
        return dateFormat.parse(dateStr);
    } catch (ParseException e) {
        throw new RuntimeException(e);
    }
}
}

DateFormatUtils.freeFormatDateParser(detailInfo.getRealValue())//转为标准Date 格式