util.java

分页类,包括中文和英文及其他语言种类,便于二次开发及商业开发,

  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 getHTML(String str) {
    String strret = null;
    URL rTmp = null;
    InputStream ins = null;
    BufferedReader breader = null;
    InputStreamReader isreader = null;
    try {
      rTmp = new URL(str);
      ins = rTmp.openStream();
      isreader = new InputStreamReader(ins);
      breader = new BufferedReader(isreader);
      String info = breader.readLine();
      strret = info;
      info = breader.readLine();
      while (info != null) {
        strret = strret + "\n" + info;
        info = breader.readLine();
      }
    }
    catch (Exception e) {
      //e.printStackTrace(System.err);
      //return null;
    }
    finally {
      try {
        if (breader != null) {
          breader.close();
        }
      }
      catch (IOException ex) {
      }

      try {
        if (isreader != null) {
          isreader.close();
        }
      }
      catch (IOException ex1) {
      }

      try {
        if (ins != null) {
          ins.close();
        }
      }
      catch (IOException ex2) {
      }

      return strret;
    }
  }

  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;
  }

  /**
   * 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;
  }

  public static String[] getPagesign(Locale locale) {
    String[] pagessign = {
        Messages.getMessage(locale, "pages.first"),
        Messages.getMessage(locale, "pages.previous"),
        Messages.getMessage(locale, "pages.next"),
        Messages.getMessage(locale, "pages.end")};
    return pagessign;
  }

  public static void main(String[] args) {
    String t = "abcdfg\"sfdfaeeed<a href=>ghjfghj";
    t = escapeForSpecial(t);
    System.out.println(t);
    System.out.println(unescapeFromXML(t));
  }

}