dateformatter.java

使用myeclipse进行的项目设计实例

package cn.com.zzrd.easy.bass.toolkits;

import java.sql.Timestamp;

import java.util.Calendar;
import java.util.Date;

/**
  系统名：物流系统
  功能概要: 数据与日期之间的转换
  完成者:
  完成日:
 */
public class DateFormatter {
    /**
     * date转换为string形式
     * @param date
     * @return string(yyyy-MM-dd)
     */
    public static String DateToString(Date date) {
        java.text.SimpleDateFormat formater = new java.text.SimpleDateFormat(
                "yyyy-MM-dd");
        String strDateTime = "";

        if (date != null) {
            strDateTime = formater.format(date);
        }

        return strDateTime;
    }

    /**
     * date转换为长string形式
     * @param date
     * @return string(yyyy-MM-dd HH:mm:ss)
     */
    public static String DateToLongString(Date date) {
        java.text.SimpleDateFormat formater = new java.text.SimpleDateFormat(
                "yyyy-MM-dd HH:mm:ss");
        String strDateTime = "";

        if (date != null) {
            strDateTime = formater.format(date);
        }

        return strDateTime;
    }

    /**
     * 指定的年、月、日转换为date
     * @param year
     * @param month
     * @param day
     * @return date
     */
    public static Date YmdToDate(int year, int month, int day) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month, day);

        return calendar.getTime();
    }

    /**
     * date转换为sting
     * @param date
     * @return string（MM/dd hh:mm）
     */
    public static String communityDateToString(Date date) {
        java.text.SimpleDateFormat formater = new java.text.SimpleDateFormat(
                "MM/dd hh:mm");
        String strDateTime = formater.format(date);

        return strDateTime;
    }

    /**
     * string转换为date
     * @param str
     * @return date(yyyy-MM-dd)
     */
    public static Date StringToDate(String str) {
        Date dateTime = null;

        try {
            if (!((str == null) || str.equals(""))) {
                java.text.SimpleDateFormat formater = new java.text.SimpleDateFormat(
                        "yyyy-MM-dd");
                dateTime = formater.parse(str);
            }
        } catch (Exception ex) {
            System.err.println(ex.toString());
        }

        return dateTime;
    }

    /**
     * string转换为Timestamp
     * @param str
     * @return timestamp
     * @throws Exception
     */
    public static Timestamp StringToDateHMS(String str)
        throws Exception {
        Timestamp time = null;

        try {
            time = java.sql.Timestamp.valueOf(str);
        } catch (Exception ex) {
            System.err.println(ex.toString());
        }

        return time;
    }

    /**
     * 取得一日内的最小时间
     * @param date
     * @return date
     */
    public static Date getMinDateOfDay(Date date) {
        if (date == null) {
            return null;
        }

        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.set(Calendar.HOUR_OF_DAY,
            calendar.getActualMinimum(Calendar.HOUR_OF_DAY));
        calendar.set(Calendar.MINUTE,
            calendar.getActualMinimum(Calendar.MINUTE));
        calendar.set(Calendar.SECOND,
            calendar.getActualMinimum(Calendar.SECOND));
        calendar.set(Calendar.MILLISECOND,
            calendar.getActualMinimum(Calendar.MILLISECOND));

        return calendar.getTime();
    }

    /**
     * 取得一日内的最大时间
     * @param date
     * @return date
     */
    public static Date getMaxDateOfDay(Date date) {
        if (date == null) {
            return null;
        }

        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.set(Calendar.HOUR_OF_DAY,
            calendar.getActualMaximum(Calendar.HOUR_OF_DAY));
        calendar.set(Calendar.MINUTE,
            calendar.getActualMaximum(Calendar.MINUTE));
        calendar.set(Calendar.SECOND,
            calendar.getActualMaximum(Calendar.SECOND));
        calendar.set(Calendar.MILLISECOND,
            calendar.getActualMaximum(Calendar.MILLISECOND));

        return calendar.getTime();
    }

    /**
     * date转换为指定的格式
     * @param date
     * @param pattern
     * @return string
     * @throws Exception
     */
    public static String DateToString(Date date, String pattern)
        throws Exception {
        String strDateTime = null;

        try {
            java.text.SimpleDateFormat formater = new java.text.SimpleDateFormat(pattern);
            strDateTime = formater.format(date);
        } catch (Exception ex) {
            throw ex;
        }

        return strDateTime;
    }

    /**
     * STING TO LONG
     * @param date String data
     * @return long
     */
    public static long StringToLong(String date){
        Date dateStr = DateFormatter.StringToDate(date);
        return dateStr.getTime();
    }

    /**
     * Long To String
     * @param dateLong
     * @return String data
     */
    public static String LongToString(long dateLong){
        Date date = new Date(dateLong);
        return DateFormatter.DateToString(date);
    }
}