CREATE TABLE IF NOT EXISTS `sys_env` ( `env_key` varchar(255) NOT NULL COMMENT '环境变量Key', `env_explain` varchar(255) DEFAULT NULL COMMENT '环境变量说明', `env_value` longtext COMMENT '环境变量值', PRIMARY KEY (`env_key`), UNIQUE KEY `env_key` (`env_key`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='系统环境变量'; INSERT INTO sys_env( env_key, env_explain, env_value ) VALUES( #{envKey}, #{envExplain}, #{envValue} ) DELETE FROM sys_env UPDATE sys_env SET env_value = #{envValue}, env_explain = #{envExplain} WHERE env_key = #{envKey}