Emoji 特殊字符处理

来源：互联网发布：淘宝网羊绒线儿童编辑：程序博客网时间：2024/05/29 02:20

Emoji 特殊字符处理，对UTF-8的MYSQL数据库插入Emoji等特殊字符时会报错。

1. 过滤

2. MYSQL字符设置为utf8mb4

public class EmojiFilter {    /**     * 检测是否有emoji字符     *      * @param source     * @return 一旦含有就抛出     */    public static boolean containsEmoji(String source) {        if (StringUtils.isEmpty(source)) {            return false;        }        int len = source.length();        for (int i = 0; i < len; i++) {            char codePoint = source.charAt(i);            if (isEmojiCharacter(codePoint)) {                // do nothing，判断到了这里表明，确认有表情字符                return true;            }        }        return false;    }    private static boolean isEmojiCharacter(char codePoint) {        return (codePoint == 0x0) || (codePoint == 0x9) || (codePoint == 0xA)                || (codePoint == 0xD)                || ((codePoint >= 0x20) && (codePoint <= 0xD7FF))                || ((codePoint >= 0xE000) && (codePoint <= 0xFFFD))                || ((codePoint >= 0x10000) && (codePoint <= 0x10FFFF));    }    /**     * 过滤emoji 或者 其他非文字类型的字符     *      * @param source     * @return     */    public static String filterEmoji(String source) {        if (!containsEmoji(source)) {            return source;// 如果不包含，直接返回        }        // 到这里铁定包含        StringBuilder buf = null;        int len = source.length();        for (int i = 0; i < len; i++) {            char codePoint = source.charAt(i);            if (isEmojiCharacter(codePoint)) {                if (buf == null) {                    buf = new StringBuilder(source.length());                }                buf.append(codePoint);            } else {            }        }        if (buf == null) {            return source;// 如果没有找到 emoji表情，则返回源字符串        } else {            if (buf.length() == len) {// 这里的意义在于尽可能少的toString，因为会重新生成字符串                buf = null;                return source;            } else {                return buf.toString();            }        }    }}

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