如何使用Go语言和Redis开发实时聊天功能

go mod init chatapp

package main

import (
   "fmt"
   "log"
   "net/Http"
   "GitHub.com/gorilla/websocket"
   "github.com/gomodule/redigo/redis"
)

var upgrader = websocket.Upgrader{
   ReadBufferSize:  1024,
   WriteBufferSize: 1024,
   CheckOrigin: func(r *http.Request) bool {
       return true
   },
}

func handleWebSocket(w http.ResponseWriter, r *http.Request) {
   conn, err := upgrader.Upgrade(w, r, nil)
   if err != nil {
       log.Println(err)
       return
   }
   defer conn.Close()

   for {
       messageType, p, err := conn.ReadMessage()
       if err != nil {
           log.Println(err)
           return
       }

       // 处理聊天消息
       handleMessage(conn, messageType, p)
   }
}

func handleMessage(conn *websocket.Conn, messageType int, message []byte) {
   // 处理接收到的消息
   // ...

   // 处理发送的消息
   // ...
}

func pubsub(conn redis.Conn) {
   // 订阅频道
   // ...

   // 接收消息
   for {
       switch v := pubSub.Receive().(type) {
       case redis.Message:
           // 处理接收到的消息
           // ...
       case redis.Subscription:
           // 处理新的订阅消息
           // ...
       case error:
           log.Println(v)
           return
       }
   }
}

func main() {
   // 创建Redis连接
   conn, err := redis.Dial("tcp", "localhost:6379")
   if err != nil {
       log.Fatal(err)
   }
   defer conn.Close()

   // 创建订阅
   pubSub := redis.PubSubConn{Conn: conn}
   go pubsub(conn)

   // 启动服务器
   http.HandleFunc("/ws", handleWebSocket)
   http.ListenAndServe(":8080", nil)
}

go run main.go