util.java

天乙虚拟社区8.05版本。只支持Mysql

	}

	private static final char[] zeroArray = "0000000000000000".toCharArray();

	/**
	 * Pads the supplied String with 0's to the specified length and returns the
	 * result as a new String. For example, if the initial String is "9999" and
	 * the desired length is 8, the result would be "00009999". This type of
	 * padding is useful for creating numerical values that need to be stored
	 * and sorted as character data. Note: the current implementation of this
	 * method allows for a maximum <tt>length</tt> of 16.
	 *
	 * @param string
	 *            the original String to pad.
	 * @param length
	 *            the desired length of the new padded String.
	 * @return a new String padded with the required number of 0's.
	 */
	public static final String zeroPadString(String string, int length) {
		if (string == null || string.length() > length) {
			return string;
		}
		StringBuffer buf = new StringBuffer(length);
		buf.append(zeroArray, 0, length - string.length()).append(string);
		return buf.toString();
	}

	/**
	 * Formats a Date as a fifteen character long String made up of the Date's
	 * padded millisecond value.
	 *
	 * @return a Date encoded as a String.
	 */
	public static final String dateToMillis(Date date) {
		return zeroPadString(Long.toString(date.getTime()), 15);
	}

	/**
	 * Formats a Date as a fifteen character long String made up of the Date's
	 * padded millisecond value.
	 *
	 * @return a Date encoded as a String.
	 */

	@SuppressWarnings("unchecked")
	public static final String collectionToString(Collection c, String spilt) {
		if (c == null) {
			return null;
		}
		if (spilt == null) {
			return null;
		}
		String ret = "";
		ArrayList a = new ArrayList(c);
		try {
			for (int i = 0; i < a.size(); i++) {
				String t = (String) a.get(i);
				if (i == a.size() - 1) {
					ret = ret + t;
				} else {
					ret = ret + t + spilt;
				}
			}
			return ret;
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	public static String genPassword(int length) {
		if (length < 1) {
			return null;
		}
		String[] strChars = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "g", "h", "i",
				"j", "k", "m", "n", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "a" };
		// 没有0,o,l和I，以免误解
		StringBuffer strPassword = new StringBuffer();
		int nRand = (int) java.lang.Math.round(java.lang.Math.random() * 100);
		for (int i = 0; i < length; i++) {
			nRand = (int) java.lang.Math.round(java.lang.Math.random() * 100);
			strPassword.append(strChars[nRand % (strChars.length - 1)]);
			// strPassword += strChars[nRand % (strChars.length - 1)];
		}
		return strPassword.toString();
	}

	public static String genNumPassword(int length) {
		if (length < 1) {
			return null;
		}
		String[] strChars = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };

		StringBuffer strPassword = new StringBuffer();
		int nRand = (int) java.lang.Math.round(java.lang.Math.random() * 100);
		for (int i = 0; i < length; i++) {
			nRand = (int) java.lang.Math.round(java.lang.Math.random() * 100);
			strPassword.append(strChars[nRand % (strChars.length - 1)]);
			// strPassword += strChars[nRand % (strChars.length - 1)];
		}
		return strPassword.toString();
	}

	public static String genEmptyString(int length) {
		if (length < 1) {
			return null;
		}
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i < length; i++) {
			sb.append(" ");
		}
		return sb.toString();
	}

	public static String getAsciiString(int digit) {
		byte ret[] = new byte[1];
		ret[0] = (byte) digit;
		return new String(ret);
	}

	public static int getAsciiNum(String s) {
		if (s.length() < 1) {
			return 0;
		}
		byte b = s.getBytes()[0];
		return b;
	}

	public static String getCurrTime() {
		Date now = new Date();
		SimpleDateFormat outFormat = new SimpleDateFormat("yyyyMMddHHmmss");
		String s = outFormat.format(now);
		return s;
	}

	public static String formatDate(Date date, String format) {
		SimpleDateFormat outFormat = new SimpleDateFormat(format);
		return outFormat.format(date);
	}

	/**
	 * Formats a Date object to return a date using the global locale.
	 */
	public static String formatDate(Date date) {
		SimpleDateFormat outFormat = new SimpleDateFormat("yyyy-MM-dd");
		return outFormat.format(date);
	}

	/**
	 * Formats a Date object to return a date and time using the global locale.
	 */
	public static String formatDateTime(Date date) {
		SimpleDateFormat outFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		return outFormat.format(date);
	}

	public static String formatDate2(Date myDate) {
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd");
		String strDate = formatter.format(myDate);
		return strDate;
	}

	public static String formatDate3(Date myDate) {
		SimpleDateFormat formatter = new SimpleDateFormat("MM-dd HH:mm");
		String strDate = formatter.format(myDate);
		return strDate;
	}

	public static String formatDate4(Date myDate) {
		SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
		String strDate = formatter.format(myDate);
		return strDate;
	}

	public static String formatDate5(Date myDate) {
		String strDate = getYear(myDate) + "-" + getMonth(myDate) + "-" + getDay(myDate);
		return strDate;
	}

	public static String formatDate6(Date myDate) {
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm");
		String strDate = formatter.format(myDate);
		return strDate;
	}

	public static long Date2Long(int year, int month, int date) {
		Calendar cld = Calendar.getInstance();
		month = month - 1;
		cld.set(year, month, date);
		return cld.getTime().getTime();
	}

	public static long Time2Long(int year, int month, int date, int hour, int minute, int second) {
		Calendar cld = Calendar.getInstance();
		month = month - 1;
		cld.set(year, month, date, hour, minute, second);
		return cld.getTime().getTime();
	}

	public static int getYear(long t) {
		Calendar cld = Calendar.getInstance();
		if (t > 0) {
			cld.setTime(new java.util.Date(t));
		}
		return cld.get(Calendar.YEAR);
	}

	public static int getMonth(long t) {
		Calendar cld = Calendar.getInstance();
		if (t > 0) {
			cld.setTime(new java.util.Date(t));
		}
		return cld.get(Calendar.MONTH) + 1;
	}

	public static int getDay(long t) {
		Calendar cld = Calendar.getInstance();
		if (t > 0) {
			cld.setTime(new java.util.Date(t));
		}
		return cld.get(Calendar.DAY_OF_MONTH);
	}

	public static int getHour(long t) {
		Calendar cld = Calendar.getInstance();
		if (t > 0) {
			cld.setTime(new java.util.Date(t));
		}
		return cld.get(Calendar.HOUR_OF_DAY);
	}

	public static int getMinute(long t) {
		Calendar cld = Calendar.getInstance();
		if (t > 0) {
			cld.setTime(new java.util.Date(t));
		}
		return cld.get(Calendar.MINUTE);
	}

	public static int getSecond(long t) {
		Calendar cld = Calendar.getInstance();
		if (t > 0) {
			cld.setTime(new java.util.Date(t));
		}
		return cld.get(Calendar.SECOND);
	}

	public static int getYear(Date date) {
		Calendar cld = Calendar.getInstance();
		cld.setTime(date);
		return cld.get(Calendar.YEAR);
	}

	public static int getMonth(Date date) {
		Calendar cld = Calendar.getInstance();
		cld.setTime(date);
		return cld.get(Calendar.MONTH) + 1;
	}

	public static int getDay(Date date) {
		Calendar cld = Calendar.getInstance();
		cld.setTime(date);
		return cld.get(Calendar.DAY_OF_MONTH);
	}

	public static int getHour(Date date) {
		Calendar cld = Calendar.getInstance();
		cld.setTime(date);
		return cld.get(Calendar.HOUR_OF_DAY);
	}

	public static int getMinute(Date date) {
		Calendar cld = Calendar.getInstance();
		cld.setTime(date);
		return cld.get(Calendar.MINUTE);
	}

	public static int getSecond(Date date) {
		Calendar cld = Calendar.getInstance();
		cld.setTime(date);
		return cld.get(Calendar.SECOND);
	}

	public static int getYear() {
		Calendar cld = Calendar.getInstance();
		cld.setTime(new java.util.Date());
		return cld.get(Calendar.YEAR);
	}

	public static int getMonth() {
		Calendar cld = Calendar.getInstance();
		cld.setTime(new java.util.Date());
		return cld.get(Calendar.MONTH) + 1;
	}

	public static int getDay() {
		Calendar cld = Calendar.getInstance();
		cld.setTime(new java.util.Date());
		return cld.get(Calendar.DAY_OF_MONTH);
	}

	public static String replaceComma(String text) {
		if (text != null) {
			text = text.replaceAll("，", ",");
		}
		return text;
	}

	public static String replaceBr(String text) {
		if (text != null) {
			text = text.replaceAll("\n", "<BR>");
		}
		return text;
	}

	public static long getLongTime() {
		return System.currentTimeMillis();
	}

	/**
	 * Check a string null or blank.
	 *
	 * @param param
	 *            string to check
	 * @return boolean
	 */
	public static boolean nullOrBlank(String param) {
		return (param == null || param.length() == 0 || param.trim().equals("")) ? true : false;
	}

	public static String notNull(String param) {
		return param == null ? "" : param.trim();
	}

	/**
	 * Parse a string to boolean.
	 *
	 * @param param
	 *            string to parse
	 * @return boolean value, if param begin with(1,y,Y,t,T) return true, on
	 *         exception return false.
	 */
	public static boolean parseBoolean(String param) {
		if (nullOrBlank(param)) {
			return false;
		}
		switch (param.charAt(0)) {
		case '1':
		case 'y':
		case 'Y':
		case 't':
		case 'T':
			return true;
		}
		return false;
	}

}