commonutil.java

OBPM是一个开源

/*
 * @(#)CommonUtil.java
 *
 * Copyright (c)cyberway Inc.
 * All rights reserved.
 *
     * This software is the confidential and proprietary information of cyberway Inc.
 * ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with cyberway Inc.
 */

package cn.myapps.core.workflow.utility;

import java.security.MessageDigest;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Enumeration;
import java.util.StringTokenizer;
import java.util.Vector;

/**
 * All Common utilty tool function
 *
 * @version   1.00
 * @author    Wang ZhengRong
 */

public class CommonUtil {

	
//add char to string's back;
  static final public int ADD_BACK = 1;
//add char to string's fore;
  static final public int ADD_FORE = 2;

  /**
   *  get a datetime String
   *
   *@return String like :2001年5月4日 星期三 14点12分14秒
   *
   */
  public static String getCurrentDateTime() {
    String week = new String("日一二三四五六");
    Date currentDate = new Date();
    String str = "";
    str = (2000 + currentDate.getYear() % 100) + "年 ";
    str = str + currentDate.getMonth() + "月";
    str = str + currentDate.getDate() + "日 ";

    int day = currentDate.getDay();
    str = str + "星期" + week.substring(day, day + 1) + " ";

    str = str + currentDate.getHours() + "点 ";
    str = str + currentDate.getMinutes() + "分 ";
    str = str + currentDate.getSeconds() + "秒 ";
    return str;
  } //String  getCurrentDateTime() end;

  /**
   * get next id
   * For Example : getNext("009",3) will return "010";
   *
   *@param curr current id
   *@param len   total length
   *@return   public static String
   */
  public static String getNext(String curr, int len) {
    if (curr == null) {
      return CommonUtil.setChar('0', len);
    }
    String ret = "";
    long lValue = new Long(curr).longValue() + 1;
    ret += lValue;
    ret = CommonUtil.setChar('0', len - ret.length()) + ret;

    return ret;
  }

  public static boolean getBoolean(String str) {
    if (isBooleanString(str)) {
      return (new Boolean(str)).booleanValue();
    }
    else {
      return false;
    }
  }

  /**
   * get special length string with the same char
   * For Example : setChar('0',4) will return "0000"
   *
   *@param chr char
   *@param totalLen   total length
   *
   *@return String
   */
  public static String setChar(char chr, int totalLen) {
    return CommonUtil.setChar("", chr, totalLen, CommonUtil.ADD_FORE);
  }

  
  /**
   * get special length string with the same char
   * For Example : setChar("12",'0',4) will return "0012"
   *
   *@str String need to filled with
   *@param chr char
   *@param totalLen   total length
   *
   *@return String
   */
  public static String setChar(String str, char chr, int totalLen) {
    return CommonUtil.setChar(str, chr, totalLen, CommonUtil.ADD_FORE);
  }

  /**
   * get special length string with the same char
   * For Example : setChar("12",'0',4,CommonUtil.ADD_BACK) will return "1200"
   *
   *@str String need to filled with
   *@param chr char
   *@param totalLen   total length
   *@param position wh
   *@author Administrator
   *@return String
   */
  public static String setChar(String str, char chr, int totalLen, int position) {
    if (totalLen < 0 || str == null) {
      return str;
    }
    int sLen = str.length();
    String ret = str;
    for (int i = 0; i < totalLen - sLen; i++) {
      if (position == CommonUtil.ADD_BACK) {
        ret = ret + chr;
      }
      else {
        ret = chr + ret;
      }
    } //end of for
    return ret;
  }

  /**
   * Validate  a date string format YYYY-MM-DD or YYYY-MM-DD HH:MM:SS
   * @param    strDate	a string representing date
   * @return	boolean	true if format is "YYYY-MM-DD HH:MM:SS" else return false
   */
  static public boolean isValidDate(String strDate) {
    try {
      return strToDate(strDate) != null;
    }
    catch (Exception e) {
      return false;
    }
  }

  /**
   * check if the string are composite of number character
   * for example "-48594.94395" return true "454kdf.94" return false
   *
   * @param str String
   *
   * @return true or false
   */
  static public boolean isNumberString(String str) {
    if (str == null || str.trim().equals("")) {
      return false;
    }
    try {
      double t = Double.valueOf(str).doubleValue();
    }
    catch (Exception e) {
      CommonUtil.printDebugInfo("it is not a number!");
      return false;
    }
    return true;
  }

  static public boolean isBooleanString(String str) {
    if (str == null || str.trim().equals("")) {
      return false;
    }
    try {
      Boolean t = new Boolean(str);
    }
    catch (Exception e) {
      CommonUtil.printDebugInfo("it is not a boolean!");
      return false;
    }
    return true;
  }

  static public int getFirstIndexInStrArray(String[] list, String str) {
    int pos = -1;
    if (list != null && list.length > 0) {
      for (int i = 0; i < list.length; i++) {
        if (list[i] != null && list[i].equals(str)) {
          pos = i;
          break;
        }
      }

    }

    return pos;
  }

  /**
   * check if the string are composite of letter
   * for example "iefKASDFK" return true "454kdfadf4" return false
   *
   * @param str String
   *
   * @return true or false
   */
  static public boolean isLetterString(String str) {
    if (str == null) {
      return false;
    }
    for (int i = 0; i < str.length(); i++) {
      if (!Character.isLetter(str.charAt(i))) {
        return false;
      }
    }
    return true;
  }

  /**
   * check if the string are composite of letter or digit
   * for example "iefKASDFK" return true "454kdfadf4" return true "^rek/." return false
   *
   * @param str String
   *
   * @return true or false
   */
  static public boolean isLetterOrDigitString(String str) {
    if (str == null) {
      return false;
    }
    for (int i = 0; i < str.length(); i++) {
      if (!Character.isLetterOrDigit(str.charAt(i))) {
        return false;
      }
    }
    return true;
  }

  /**
   * check if the string are composite of number character and length less than special bit number
   * for example "-48594.94395" return true "454kdf.94" return false
   *
   * @param str String
   *
   * @return true or false
   */
  static public boolean isNumberString(String str, int bit) {
    if (bit <= 0) {
      return false;
    }
    if (isNumberString(str) && str.length() <= bit) {
      return true;
    }
    else {
      return false;
    }
  }

  /**
   * getDateStr	get a string with format YYYY-MM-DD from a Date object
   * @param Date   date
   * @return String
   */
  static public String getDateStr(Date date) {
    if (date == null) {
      return "";
    }
    int year = date.getYear() + 1900;
    int month = date.getMonth() + 1;
    int day = date.getDate();
    return year + "-" + month + "-" + day;
  }

  /**
   * getDateStr	get a string with format YYYY-MM-DD from a Date object
   * @param Date   date
   * @return String
   */
  static public String getCurrentDateToSerializeNo() {
    Date date = new Date();
    int year = date.getYear() + 1900;
    int month = date.getMonth() + 1;
    int day = date.getDate();

    return year + "-" + month + "-" + day;
  }

  /**
   * getTimeStr	get a string with format HH24:MI:SS from a Time object
   * @param java.sql.Time time
   * @return String
   */
  static public String getTimeStr(java.sql.Time time) {
    if (time == null) {
      return "";
    }
    return " " + time.getHours()
        + ":" + time.getMinutes()
        + ":" + "00";
  }

  /**
   * convert a string with format YYYY-MM-DD to a java.sql.Date object
   * For Example : Date String "2000-12-10"
   *
   * @param dateString format "YYYY-MM-DD" or "YYYY-MM-DD HH:MM:SS"
   *
   * @return java.sql.Date type object
   */
  static public java.sql.Date strToDate(String str) {
    String dtstr = new String(str);

    dtstr.replace('/', '-');
    while (dtstr.indexOf("  ") >= 0) {
      dtstr = dtstr.substring(0, dtstr.indexOf("  ")) +
          dtstr.substring(dtstr.indexOf("  ") + 1);
    }

    if (dtstr == null
        || dtstr.length() < 8
        ) {
      return null;
    }

    int len = str.length();
    String year = "0";
    while (!dtstr.equals("")
           && !dtstr.startsWith("-")
           && !dtstr.startsWith(":")
           && !dtstr.startsWith(" ")) {
      year += dtstr.charAt(0);
      dtstr = dtstr.substring(1);
    }

    String month = "0";
    dtstr = dtstr.trim().length() > 0 ? dtstr.trim().substring(1) : "";
    while (!dtstr.equals("")
           && !dtstr.startsWith("-")
           && !dtstr.startsWith(":")
           && !dtstr.startsWith(" ")) {
      month += dtstr.charAt(0);
      dtstr = dtstr.trim().substring(1);
    }

    String date = "0";
    dtstr = dtstr.trim().length() > 0 ? dtstr.trim().substring(1) : "";
    while (!dtstr.equals("")
           && !dtstr.startsWith("-")
           && !dtstr.startsWith(":")
           && !dtstr.startsWith(" ")) {
      date += dtstr.charAt(0);
      dtstr = dtstr.trim().substring(1);
    }

    String hour = "0";
    dtstr = dtstr.trim();
    while (!dtstr.equals("")
           && !dtstr.startsWith("-")
           && !dtstr.startsWith(":")
           && !dtstr.startsWith(" ")) {
      hour += dtstr.charAt(0);
      dtstr = dtstr.trim().substring(1);
    }

    String minute = "0";