日期时间工具类

1.日期工具类

package com.zhl.scheduling.utils;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

public class DateUtil {
  private static final String DATE_TIME_STYLE = "yyyy-MM-dd HH:mm:ss";
  //日期转为字符串，默认yyyy-MM-dd
  public static String dateToString(Date d) {
    return dateToString(d, "yyyy-MM-dd");
  }
  //日期转为字符串，自定义格式
  public static String dateToString(Date d, String pattern) {
    SimpleDateFormat sdf = new SimpleDateFormat(pattern);
    return sdf.format(d);
  }
  //字符串转为日期，默认yyyy-MM-dd
  public static Date stringToDate(String str) {
    return stringToDate(str, "yyyy-MM-dd");
  }
  //字符串转为日期，自定义格式
  public static Date stringToDate(String str, String pattern) {
    SimpleDateFormat sdf = new SimpleDateFormat(pattern);
    try {
      Date d = sdf.parse(str);
      return d;
    } catch (ParseException e) {
      e.printStackTrace();
    }
    return new Date();
  }
  public static String dataOne(String time) {
    SimpleDateFormat sdr = new SimpleDateFormat("yyyy-MM-dd", Locale.CHINA);
    Date date;
    String times = null;
    try {
      date = sdr.parse(time);
      long l = date.getTime();
      String stf = String.valueOf(l);
      times = stf.substring(0, 10);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return times;
  }

  /**
   *
   * @param date
   * @return
   */
  public static synchronized Timestamp formatTimestamp(Date date) {
    Timestamp timestamp = new Timestamp(System.currentTimeMillis());
    String dateStr = formatDateTime(date);
    try {
      timestamp =  Timestamp.valueOf(dateStr);
    }catch (Exception e){
      e.printStackTrace();
    }
    return timestamp;
  }

  public static synchronized String formatDateTime(Date date) {
    SimpleDateFormat SDF2 = new SimpleDateFormat(DATE_TIME_STYLE);
    String dateStr = SDF2.format(date);
    return dateStr;
  }
}