[thymeleaf] Utility Objects(Strings, Numbers, Objects, Arrays, Lists, Maps, Messages, Dates, Calendars); comma

https://hajoung56.tistory.com/72

[Thymeleaf] 타임리프 주요 기능 유틸리티 - Utility Objects(Strings, Numbers, Objects, Arrays, Lists, Maps, Messages,

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

import java.math.BigDecimal;
import java.text.NumberFormat;
import java.util.Arrays;
import java.util.List;

@Slf4j
public class CommonUtil {
    public static final String DOT = ".";

    public static String comma(BigDecimal n) {
        return comma(String.valueOf(n));
    }

    public static String comma(double n) {
        return comma(String.valueOf(n));
    }

    public static String comma(String n) {
        try {
            List<String> h = Arrays.asList(StringUtils.split(n, CommonUtil.DOT));
            String decimal = h.size() == 2 ?
                "." + h.get(1) :
                "";

            return comma(Integer.parseInt(h.get(0))) + decimal;
        } catch (Exception e) {
            log.warn("NaN <{}>", n);
            return n;
        }
    }

    public static String comma(int n) {
        return NumberFormat.getNumberInstance().format(n);
    }
}

https://stackoverflow.com/questions/29496195/thousands-separator-thymeleaf-use-apostrophe/77117833#77117833

Thousands separator thymeleaf: use apostrophe