Name: ucenter.rpc
ListenOn: 0.0.0.0:8081
Etcd:
  Hosts:
  - 42.193.152.252:2379
  Key: ucenter.rpc
  Token: tkn
DbMysql:
  Host: 47.120.55.99
  Port: 3306
  Username: root
  Password:  chenhaifeng
  Databases: go_netdisk
C

package main

import (
    "context"
    "database/sql"
    "fmt"
    "time"

    "github.com/zeromicro/go-zero/core/stores/sqlx"
)

type User struct {
    Id       int64          `db:"id"`
    Name     sql.NullString `db:"name&qu