unicode转化

// 汉字转化成unicode

public static void encodeUnicode(final String gbString) {
		char[] utfBytes = gbString.toCharArray();
		String unicodeBytes = "";
		for (int byteIndex = 0; byteIndex < utfBytes.length; byteIndex++) {
			String hexB = Integer.toHexString(utfBytes[byteIndex]);
			if (hexB.length() <= 2) {
				hexB = "00" + hexB;
			}
			unicodeBytes = unicodeBytes + "\\u" + hexB;
		}
		System.out.println(unicodeBytes);
	}

	//unicode转化汉字
	public static StringBuffer decodeUnicode(final String dataStr) {
		final StringBuffer buffer = new StringBuffer();
		String tempStr = "";
		String operStr = dataStr;
		if (operStr != null && operStr.indexOf("\\u") == -1)
			return buffer.append(operStr);
		if (operStr != null && !operStr.equals("")
				&& !operStr.startsWith("\\u")) {
			tempStr = operStr.substring(0, operStr.indexOf("\\u"));
			operStr = operStr.substring(operStr.indexOf("\\u"), operStr.length());// operStr字符一定是以unicode编码字符打头的字符串
		}
		buffer.append(tempStr);
		// 循环处理,处理对象一定是以unicode编码字符打头的字符串
		while (operStr != null && !operStr.equals("")&& operStr.startsWith("\\u")) { 
			tempStr = operStr.substring(0, 6);
			operStr = operStr.substring(6, operStr.length());
			String charStr = "";
			charStr = tempStr.substring(2, tempStr.length());
			char letter = (char) Integer.parseInt(charStr, 16); // 16进制parse整形字符串。
			buffer.append(new Character(letter).toString());
			if (operStr.indexOf("\\u") == -1) {
				buffer.append(operStr);
			} else { // 处理operStr使其打头字符为unicode字符
				tempStr = operStr.substring(0, operStr.indexOf("\\u"));
				operStr = operStr.substring(operStr.indexOf("\\u"), operStr.length());
				buffer.append(tempStr);
			}
		}
		return buffer;
	}