国际码和内码的转换在线区位码转国标码工具

我先考一考你，你说这个字符串（ab一2?仯3?4）有多少个字符？
这时候你也许开始数了，123…9个，没错，确实我们肉眼确实是看到了9个，java代码如下：

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jdk自带的Character类特别好用，汉字转内码，内码转汉字具体功能请参考下面的代码

/** * 字符串转16进制内码 * @param str ab一2?仯3?4 * @return \u61\u62\u4e00\u32\u2b802\u4eef\u33\u2b82f\u34\u34 */public static String stringToCodePoints(String str) {StringBuilder stringBuilder = new StringBuilder();str.codePoints().forEach(cp -> stringBuilder.append("\u").append(Integer.toHexString(cp)));return stringBuilder.toString();}/** * 内码转汉字 * @param codePoints \u61\u62\u4e00\u32\u2b802\u4eef\u33\u2b82f\u34\u34 * @return ab一2?仯3?4 */public static String codePointsToString(String codePoints) {StringBuilder stringBuilder = new StringBuilder();for(String hexCodePoint : codePoints.split("\\u")){if(StringUtils.isNotBlank(hexCodePoint)) {stringBuilder.append(codePointToString(Integer.parseInt(hexCodePoint, 16)));}}return stringBuilder.toString();}/** * 十进制转汉字 * @param cp code point 汉字内码 * @return */public static String codePointToString(int cp) {StringBuilder sb = new StringBuilder();if (Character.isBmpCodePoint(cp)) {sb.append((char) cp);} else if (Character.isValidCodePoint(cp)) {sb.append(Character.highSurrogate(cp));sb.append(Character.lowSurrogate(cp));} else {sb.append('?');}return sb.toString();}

【国际码和内码的转换在线区位码转国标码工具】支持5位编码的在线转换工具