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                utf8是三字節,utf8mb4是4字節而emoji表情也是4字節。 修改mysql配置文件my.cnf ~~~ [client] default-character-set = utf8mb4 [mysql] default-character-set = utf8mb4 [mysqld] character-set-client-handshake = FALSE character-set-server = utf8mb4 collation-server = utf8mb4_unicode_ci init_connect='SET NAMES utf8mb4' ~~~ 重啟 MySQL Server 在mysql命令行中輸入: ~~~ SHOW VARIABLES WHERE Variable_name LIKE 'character_set_%' OR Variable_name LIKE 'collation%'; ~~~ ![](https://box.kancloud.cn/02c0978b2a005a572e8f7d9146fc7676_615x280.png) (1)對于mysql字符集我們不想出現亂碼情況有一個經驗就是character_set_client、character_set_connection、character_set_results字符盡量設置成一致的。 (2)mysql的字符集的作用域有三個層級一個數據庫級,一個是表級,一個是列級(字段級別的)。優先級是:列級》表級》數據庫級。從優先級知道如果存emoji的那個字段不是utf8mb4字符集,那么即使數據庫是utf8mb4也是無濟于事的。 逐步修改數據庫,數據表,字段
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