线程安全的日期类工具

文章目录

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DateUtil {
    private static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
    private static ThreadLocal<DateFormat> threadLocal = new ThreadLocal<DateFormat>();
    
    public static DateFormat getDateFormat() {
        DateFormat df = threadLocal.get();
        if(df==null){
            df = new SimpleDateFormat(DATE_FORMAT);
            threadLocal.set(df);
        }
        return df;
    }
    

    public static String formatDate(Date date) {
        return getDateFormat().format(date);
    }


    public static String getCurrentTime() {
        DateFormat df = getDateFormat();
        return df.format(System.currentTimeMillis());
    
}