getch2spell.java

java版源代码,里面包含很多源代码,大家可以看看.

package com.trulytech.mantis.util;

/**
 *
 * <p>Title: Mantis</p>
 *
 * <p>Description: 获得中文字符的首字母</p>
 *
 * <p>Copyright: Copyright (c) 2002</p>
 *
 * <p>Company: </p>
 *
 * @author Wang Xian
 * @version 1.0
 */
public class GetCh2Spell {
  private static int compare(String str1, String str2) {
    int result = 0;
    String m_s1 = null;
    String m_s2 = null;
    try {
      m_s1 = new String(str1.getBytes(_FromEncode_), _ToEncode_);
      m_s2 = new String(str2.getBytes(_FromEncode_), _ToEncode_);
    }
    catch (Exception e) {
      return str1.compareTo(str2);
    }
    result = chineseCompareTo(m_s1, m_s2);
    return result;
  }

  private static int getCharCode(String s) {
    if (s == null && s.equals(""))
      return -1;
    byte b[] = s.getBytes();
    int value = 0;
    for (int i = 0; i < b.length && i <= 2; i++)
      value = value * 100 + b[i];

    return value;
  }

  private static int chineseCompareTo(String s1, String s2) {
    int len1 = s1.length();
    int len2 = s2.length();
    int n = Math.min(len1, len2);
    for (int i = 0; i < n; i++) {
      int s1_code = getCharCode(s1.charAt(i) + "");
      int s2_code = getCharCode(s2.charAt(i) + "");
      if (s1_code * s2_code < 0)
        return Math.min(s1_code, s2_code);
      if (s1_code != s2_code)
        return s1_code - s2_code;
    }

    return len1 - len2;
  }

  /**
   * 获得中文每个字符的首字母
   * @param res String 如果是中文,则显示首字母,否则显示原有的字符
   * @return String
   */
  public static String getBeginCharacter(String res) {
    String a = res;
    String result = "";
    for (int i = 0; i < a.length(); i++) {
      String current = a.substring(i, i + 1);
      if (compare(current, "\u554A") < 0)
        result = result + current;
      else
      if (compare(current, "\u554A") >= 0 && compare(current, "\u5EA7") <= 0)
        if (compare(current, "\u531D") >= 0)
          result = result + "z";
        else
        if (compare(current, "\u538B") >= 0)
          result = result + "y";
        else
        if (compare(current, "\u6614") >= 0)
          result = result + "x";
        else
        if (compare(current, "\u6316") >= 0)
          result = result + "w";
        else
        if (compare(current, "\u584C") >= 0)
          result = result + "t";
        else
        if (compare(current, "\u6492") >= 0)
          result = result + "s";
        else
        if (compare(current, "\u7136") >= 0)
          result = result + "r";
        else
        if (compare(current, "\u671F") >= 0)
          result = result + "q";
        else
        if (compare(current, "\u556A") >= 0)
          result = result + "p";
        else
        if (compare(current, "\u54E6") >= 0)
          result = result + "o";
        else
        if (compare(current, "\u62FF") >= 0)
          result = result + "n";
        else
        if (compare(current, "\u5988") >= 0)
          result = result + "m";
        else
        if (compare(current, "\u5783") >= 0)
          result = result + "l";
        else
        if (compare(current, "\u5580") >= 0)
          result = result + "k";
        else
        if (compare(current, "\u51FB") > 0)
          result = result + "j";
        else
        if (compare(current, "\u54C8") >= 0)
          result = result + "h";
        else
        if (compare(current, "\u5676") >= 0)
          result = result + "g";
        else
        if (compare(current, "\u53D1") >= 0)
          result = result + "f";
        else
        if (compare(current, "\u86FE") >= 0)
          result = result + "e";
        else
        if (compare(current, "\u642D") >= 0)
          result = result + "d";
        else
        if (compare(current, "\u64E6") >= 0)
          result = result + "c";
        else
        if (compare(current, "\u82AD") >= 0)
          result = result + "b";
        else
        if (compare(current, "\u554A") >= 0)
          result = result + "a";
    }

    return result;
  }

  /**
   * 获得中文的首字母
   * @param str String 如果是英文,则显示character
   * @return String
   */
  public static String getFirstStr(String str) {
    char a = str.charAt(0);
    char aa[] = {
        a
    };
    String sss = new String(aa);
    if (Character.isDigit(aa[0]))
      sss = "data";
    else
    if (a >= 'a' && a <= 'z' || a >= 'A' && a <= 'Z')
      sss = "character";
    else
      sss = getBeginCharacter(sss);
    return sss;
  }

  private static String _FromEncode_ = "GBK";
  private static String _ToEncode_ = "GBK";

}