mysql特殊字符允许，比如表情
ALTER TABLE `cbsy_chanpin` MODIFY COLUMN `content` TEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci最近访问时间：2026-05-16 17:15:23
ALTER TABLE `cbsy_chanpin` MODIFY COLUMN `content` TEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci