转化unicode字符串

// 任意编码的字符串转化为unicode字符串
	public static String toUnicode(String str) {
		String result = "";
		for (int i = 0; i < str.length(); i++) {
			int chal = (char) str.charAt(i);
			result += "\\u" + Integer.toHexString(chal);
		}
		return result;
	}

// unicode字符串转化为任意编码
	public static String unicodeToString(String str) {
		String[] str1 = str.split("\\\\u");
		String result = "";
		for (int i = 1; i < str1.length; i++) {
			char c = (char) Integer.parseInt(str1[i], 16);
			result += String.valueOf(c);
		}
		return result;
	}