public static String getFirstLetter(String oriStr)
		{

			String str = oriStr.toLowerCase();

			StringBuffer buffer = new StringBuffer();

			char ch;

			char[] temp;

			for (int i = 0; i < str.length(); i++)
			{ // 依次处理str中每个字符

				ch = str.charAt(i);

				temp = new char[] { ch };

				byte[] uniCode = new String(temp).getBytes();

				if (uniCode[0] < 128 && uniCode[0] > 0)
				{ // 非汉字

					buffer.append(temp);

				}
				else
				{

					buffer.append(convert(uniCode));

				}

			}

			return buffer.toString();

		}