feat(user):基本完成间隔与运维用户创建功能。

service/user.go

@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	"xorm.io/builder"
 )
 
 type _UserService struct{}
@@ -169,6 +170,10 @@ func (_UserService) IsUserExists(uid string) (bool, error) {
 	return global.DBConn.ID(uid).Exist(&model.User{})
 }
 
+func (_UserService) IsUsernameExists(username string) (bool, error) {
+	return global.DBConn.Where(builder.Eq{"username": username}).Exist(&model.User{})
+}
+
 func (u _UserService) CreateUser(user *model.User, detail *model.UserDetail) (string, error) {
 	if len(user.Id) == 0 {
 		user.Id = uuid.New().String()