/*     * 中文转unicode编码     */    public static String gbEncoding(final String gbString) {        char[] utfBytes = gbString.toCharArray();        String unicodeBytes = "";        for (int i = 0; i < utfBytes.length; i++) {            String hexB = Integer.toHexString(utfBytes[i]);            if (hexB.length() <= 2) {                hexB = "00" + hexB;            }            unicodeBytes = unicodeBytes + "\\u" + hexB;        }        return unicodeBytes;    }    /*     * unicode编码转中文     */    public static String decodeUnicode(final String dataStr) {        int start = 0;        int end = 0;        final StringBuffer buffer = new StringBuffer();        while (start > -1) {            end = dataStr.indexOf("\\u", start + 2);            String charStr = "";            if (end == -1) {                charStr = dataStr.substring(start + 2, dataStr.length());            } else {                charStr = dataStr.substring(start + 2, end);            }            char letter = (char) Integer.parseInt(charStr, 16); // 16进制parse整形字符串。            buffer.append(new Character(letter).toString());            start = end;        }        return buffer.toString();    }

原文链接：https://www.cnblogs.com/boluoboluo/p/6504641.html