如何使用Go语言和Redis实现酒店预订系统

|-- main.go
|-- handlers
|   |-- hotel.go
|-- models
|   |-- hotel.go
|-- utils
|   |-- redis.go

package utils

import (
    "GitHub.com/go-redis/redis/v8"
)

var (
    Client *redis.Client
)

func init() {
    Client = redis.NewClient(&redis.Options{
        Addr:     "localhost:6379",
        PassWord: "", // Redis密码，没有密码则为空
        DB:       0,  // Redis数据库索引
    })
}

package models

type Hotel struct {
    ID          uint   `JSON:"id"`
    Name        string `json:"name"`
    Description string `json:"description"`
    Price       int    `json:"price"`
}

func (h *Hotel) Save() error {
    err := utils.Client.HSet(ctx, "hotels", h.ID, h).Err()
    if err != nil {
        return err
    }
    return nil
}

func (h *Hotel) GetByID(id uint) (*Hotel, error) {
    hotelMap, err := utils.Client.HGetAll(ctx, "hotels").Result()
    if err != nil {
        return nil, err
    }
    hotel, ok := hotelMap[id]
    if !ok {
        return nil, errors.New("Hotel not found")
    }
    return hotel, nil
}

package handlers

import (
    "net/Http"
    "strconv"

    "github.com/gin-gonic/gin"

    "github.com/yourusername/yourprojectname/models"
)

func CreateHotel(c *gin.Context) {
    var hotel models.Hotel
    if err := c.ShouldBindJSON(&hotel); err != nil {
        c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
        return
    }
    err := hotel.Save()
    if err != nil {
        c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
        return
    }
    c.JSON(http.StatusOK, gin.H{"message": "Hotel created successfully"})
}

func GetHotelByID(c *gin.Context) {
    id, err := strconv.ParseUint(c.Param("id"), 10, 32)
    if err != nil {
        c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid hotel ID"})
        return
    }
    hotel, err := models.GetByID(uint(id))
    if err != nil {
        c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
        return
    }
    c.JSON(http.StatusOK, hotel)
}

package main

import (
    "github.com/gin-gonic/gin"

    "github.com/yourusername/yourprojectname/handlers"
)

func main() {
    router := gin.Default()

    router.POST("/hotels", handlers.CreateHotel)
    router.GET("/hotels/:id", handlers.GetHotelByID)

    router.Run(":8080")
}