如何实现表情编码与UTF-8编码之间的相互转换操作？

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java/** * 将表情符号转换成UTF-8编码 * @param str 输入字符串 * @return 转换后的字符串 */public static String emojiConvert1(String str) { String patternString=([\\x{10000}-\\x{10ffff}\\ud800-\\udfff]); Pattern pattern=Pattern.compile(patternString); Matcher matcher=pattern.matcher(str); StringBuffer sb=new StringBuffer(); while (matcher.find()) { matcher.appendReplacement(sb, Matcher.quoteReplacement(\\u + Integer.toHexString(Integer.parseInt(new String(Character.toChars(Integer.parseInt(matcher.group())))))); } matcher.appendTail(sb); return sb.toString();}

gistfile1.txt

/** * 对表情进行转义成utf-8 * * @param str * @return */ public static String emojiConvert1(String str) { String patternString = "([\\x{10000}-\\x{10ffff}\ud800-\udfff])"; Pattern pattern = Pattern.compile(patternString); Matcher matcher = pattern.matcher(str); StringBuffer sb = new StringBuffer(); while (matcher.find()) { try { matcher.appendReplacement(sb, "[[" + URLEncoder.encode(matcher.group(1), "UTF-8") + "]]"); } catch (Exception e) { } } matcher.appendTail(sb); return sb.toString(); } /** * 对数据进行表情转换 * * @param str * @return */ public static String emojiRecovery2(String str) { String patternString = "\\[\\[(.*?)\\]\\]"; Pattern pattern = Pattern.compile(patternString); Matcher matcher = pattern.matcher(str); StringBuffer sb = new StringBuffer(); while (matcher.find()) { try { matcher.appendReplacement(sb, URLDecoder.decode(matcher.group(1), "UTF-8")); } catch (UnsupportedEncodingException e) { } } matcher.appendTail(sb); return sb.toString(); }