ctime.java

移动empp网关

package cn.madhouse.gateway.empp.util;

import java.util.Calendar;

/**
 * <p>
 * Title: Time
 * </p>
 * <p>
 * Description:
 * </p>
 * 此类主要用来取得本地系统的系统时间并用下面5种格式显示 1. YYMMDDHH 8位 2. YYMMDDHHmm 10位 3. YYMMDDHHmmss
 * 12位 4. YYYYMMDDHHmmss 14位 5. YYMMDDHHmmssxxx 15位 (最后的xxx 是毫秒) YYYYMMDDHHmmssxxx 17位
 * <p>
 * Copyright: Copyright (c) 2003
 * </p>
 * <p>
 * Company: hoten
 * </p>
 * 
 * @author lqf
 * @version 1.0
 */
public class CTime {
	public static final int YYYYMMDDhhmmssxxx = 17;
	
	public static final int YYMMDDhhmmssxxx = 15;

	public static final int YYYYMMDDhhmmss = 14;

	public static final int YYMMDDhhmmss = 12;

	public static final int YYMMDDhhmm = 10;

	public static final int YYMMDDhh = 8;

	/**
	 * 取得本地系统的时间，时间格式由参数决定
	 * 
	 * @param format
	 *            时间格式由常量决定
	 * @return String 具有format格式的字符串
	 */
	public synchronized static String getTime(int format) {
		StringBuffer cTime = new StringBuffer(10);
		Calendar time = Calendar.getInstance();
		int miltime = time.get(Calendar.MILLISECOND);
		int second = time.get(Calendar.SECOND);
		int minute = time.get(Calendar.MINUTE);
		int hour = time.get(Calendar.HOUR_OF_DAY);
		int day = time.get(Calendar.DAY_OF_MONTH);
		int month = time.get(Calendar.MONTH) + 1;
		int year = time.get(Calendar.YEAR);
		if (format != 14 && format != 17) {
			if (year >= 2000)
				year = year - 2000;
			else
				year = year - 1900;
		}
		if (format >= 2) {
			if (format == 14||format ==17 )
				cTime.append(year);
			else
				cTime.append(getFormatTime(year, 2));
		}
		if (format >= 4)
			cTime.append(getFormatTime(month, 2));
		if (format >= 6)
			cTime.append(getFormatTime(day, 2));
		if (format >= 8)
			cTime.append(getFormatTime(hour, 2));
		if (format >= 10)
			cTime.append(getFormatTime(minute, 2));
		if (format >= 12)
			cTime.append(getFormatTime(second, 2));
		if (format >= 15)
			cTime.append(getFormatTime(miltime, 3));
		return cTime.toString();
	}

	/**
	 * 产生任意位的字符串
	 * 
	 * @param time
	 *            要转换格式的时间
	 * @param format
	 *            转换的格式
	 * @return String 转换的时间
	 */
	private synchronized static String getFormatTime(int time, int format) {
		StringBuffer numm = new StringBuffer();
		int length = String.valueOf(time).length();

		if (format < length)
			return null;

		for (int i = 0; i < format - length; i++) {
			numm.append("0");
		}
		numm.append(time);
		return numm.toString().trim();
	}
}