一、用户表结构在mysql数据库中创建user表DROPTABLEIFEXISTS`user`;CREATETABLE`user`(`id`bigint(20)NOTNULLAUTO_INCREMENT,`user_id`bigint(20)NOTNULL,`username`varchar(64)COLLATEutf8mb4_general_ciNOTNULL,`password`varchar(64)COLLATEutf8