声明全局变量的时候注意一下好不

qqqweiweiqq2023-11-09 8:21

before

Go 复制代码 
package router

import (
	"IM_for_imageProcess/api-01/utitl"
	"encoding/json"
	//"errors"
	"fmt"
	"net/http"
	"time"
)

type History struct {
}

//var senderIdd int
//var receiverIdd int
//var messageContent string
//var createAt time.Time
//var isReceived string
type HistoryRes struct{
	SenderIdd int `json:"sender_idd"`
	ReceiverIdd int `json:"receiver_idd"`
	MessageContent string `json:"message_content"`
	CreateAt time.Time `json:"create_at"`
	IsReceived string `json:"is_received"`

}
var HistoryResList []HistoryRes

func reverse(arr []HistoryRes)  {

	i:=0
	j:=len(arr)-1

	for{
		if i < j{
			arr[i],arr[j]=arr[j],arr[i]
			i=i+1
			j=j-1
		} else{
			break
		}


	}



}







func (this *History) GetHistoryMessage(w http.ResponseWriter, r *http.Request) {
	err := r.ParseForm()
	if err != nil {
		return
	}
	w.Header().Set("Access-Control-Allow-Origin", "*")

	w.Header().Set("Access-Control-Allow-Credentials", "true")


	requestMap := r.Form

	senderId := requestMap["senderId"][0]

	receiverId := requestMap["receiverId"][0]
	//var HistoryResList []HistoryRes



	//Id             | int(11)    | NO   | PRI | NULL    | auto_increment |
	//| senderId       | int(11)    | YES  |     | NULL    |                |
	//| receiverId     | int(11)    | YES  |     | NULL    |                |
	//| messageContent | text       | YES  |     | NULL    |                |
	//| createAt       | datetime   | YES  |     | NULL    |                |
	//| isReceived     | varchar(3) | YES  |     | yes     |                |




	//rows, err := utitl.Db.Query("select senderId,receiverId,messageContent,createAt,isReceived from MessageTable where senderId = ? and receiverId=? or receiverId=? and senderId=? order by createAt desc limit 15", senderId,receiverId,receiverId,senderId)

	rows, err := utitl.Db.Query("select senderId,receiverId,messageContent,createAt,isReceived from MessageTable where senderId = ? and receiverId=? or receiverId=? and senderId=? order by createAt desc limit 15", senderId,receiverId,senderId,receiverId)

	if err != nil {
		fmt.Println(fmt.Sprintf("select tweetId from Tweet error: %v\n", err))
		//return nil,errors.New(fmt.Sprintf("select tweetId from Tweet error: %v\n", err))
	}
	var senderIdd int
	var receiverIdd int
	var messageContent string
	var createAt time.Time
	var isReceived string
	for rows.Next() {
		err := rows.Scan(&senderIdd,&receiverIdd, &messageContent, &createAt,&isReceived)
		if err != nil {
			fmt.Printf("scan failed, err:%v\n", err)
			//return nil,nil ,err
			//return nil, err
			//return nil,err
		}

		historyRes:=HistoryRes{
			SenderIdd:senderIdd,
			ReceiverIdd:receiverIdd,
			MessageContent:messageContent,
			CreateAt:createAt,
			IsReceived:isReceived,
		}
		//tweetDetail := model.TweetDetail{
		//	TweetId:  tweetId,
		//	UserId:   star,
		//	Content:  content,
		//	CreateAt: createAt,
		//	PostTime:postTime,
		//}
		//哈哈 这个就是我一个朋友的推文
		//common.MapTweetDetail[createAt]=tweetDetail
		HistoryResList=append(HistoryResList,historyRes)

		//fmt.Println("tweetDetail=====",tweetDetail)
	}

	fmt.Println("len(HistoryResList)===",len(HistoryResList))

	reverse(HistoryResList)

	//sort.Stable(sort.Reverse(sort.IntSlice(HistoryResList)))


	HistoryResListMar,err:=json.Marshal(HistoryResList)




	//timeElapse:=time.Since(timeStart)
	//fmt.Println("timeElapse=====",timeElapse)
	//timeElapse=rpc获取friendsList +从tweettable 中获取明星的信息 +从news_feed表中获取普通人的信息+对两个表的信息排序

	fmt.Fprintf(w,string(HistoryResListMar))

}

after:

after:

Go 复制代码 
package router

import (
	"IM_for_imageProcess/api-01/utitl"
	"encoding/json"
	//"errors"
	"fmt"
	"net/http"
	"time"
)

type History struct {
}

//var senderIdd int
//var receiverIdd int
//var messageContent string
//var createAt time.Time
//var isReceived string
type HistoryRes struct{
	SenderIdd int `json:"sender_idd"`
	ReceiverIdd int `json:"receiver_idd"`
	MessageContent string `json:"message_content"`
	CreateAt time.Time `json:"create_at"`
	IsReceived string `json:"is_received"`

}
//var HistoryResList []HistoryRes

func reverse(arr []HistoryRes)  {

	i:=0
	j:=len(arr)-1

	for{
		if i < j{
			arr[i],arr[j]=arr[j],arr[i]
			i=i+1
			j=j-1
		} else{
			break
		}


	}



}







func (this *History) GetHistoryMessage(w http.ResponseWriter, r *http.Request) {
	err := r.ParseForm()
	if err != nil {
		return
	}
	w.Header().Set("Access-Control-Allow-Origin", "*")

	w.Header().Set("Access-Control-Allow-Credentials", "true")


	requestMap := r.Form

	senderId := requestMap["senderId"][0]

	receiverId := requestMap["receiverId"][0]
	var HistoryResList []HistoryRes



	//Id             | int(11)    | NO   | PRI | NULL    | auto_increment |
	//| senderId       | int(11)    | YES  |     | NULL    |                |
	//| receiverId     | int(11)    | YES  |     | NULL    |                |
	//| messageContent | text       | YES  |     | NULL    |                |
	//| createAt       | datetime   | YES  |     | NULL    |                |
	//| isReceived     | varchar(3) | YES  |     | yes     |                |




	//rows, err := utitl.Db.Query("select senderId,receiverId,messageContent,createAt,isReceived from MessageTable where senderId = ? and receiverId=? or receiverId=? and senderId=? order by createAt desc limit 15", senderId,receiverId,receiverId,senderId)

	rows, err := utitl.Db.Query("select senderId,receiverId,messageContent,createAt,isReceived from MessageTable where senderId = ? and receiverId=? or receiverId=? and senderId=? order by createAt desc limit 15", senderId,receiverId,senderId,receiverId)

	if err != nil {
		fmt.Println(fmt.Sprintf("select tweetId from Tweet error: %v\n", err))
		//return nil,errors.New(fmt.Sprintf("select tweetId from Tweet error: %v\n", err))
	}
	var senderIdd int
	var receiverIdd int
	var messageContent string
	var createAt time.Time
	var isReceived string
	for rows.Next() {
		err := rows.Scan(&senderIdd,&receiverIdd, &messageContent, &createAt,&isReceived)
		if err != nil {
			fmt.Printf("scan failed, err:%v\n", err)
			//return nil,nil ,err
			//return nil, err
			//return nil,err
		}

		historyRes:=HistoryRes{
			SenderIdd:senderIdd,
			ReceiverIdd:receiverIdd,
			MessageContent:messageContent,
			CreateAt:createAt,
			IsReceived:isReceived,
		}
		//tweetDetail := model.TweetDetail{
		//	TweetId:  tweetId,
		//	UserId:   star,
		//	Content:  content,
		//	CreateAt: createAt,
		//	PostTime:postTime,
		//}
		//哈哈 这个就是我一个朋友的推文
		//common.MapTweetDetail[createAt]=tweetDetail
		HistoryResList=append(HistoryResList,historyRes)

		//fmt.Println("tweetDetail=====",tweetDetail)
	}

	fmt.Println("len(HistoryResList)===",len(HistoryResList))

	reverse(HistoryResList)

	//sort.Stable(sort.Reverse(sort.IntSlice(HistoryResList)))


	HistoryResListMar,err:=json.Marshal(HistoryResList)




	//timeElapse:=time.Since(timeStart)
	//fmt.Println("timeElapse=====",timeElapse)
	//timeElapse=rpc获取friendsList +从tweettable 中获取明星的信息 +从news_feed表中获取普通人的信息+对两个表的信息排序

	fmt.Fprintf(w,string(HistoryResListMar))

}
相关推荐
明月_清风5 小时前
Go 没有 `class`，如何实现面向对象三要素？与传统 OOP 的深度对比
后端·go
审判长烧鸡6 小时前
【GO context 】上下文取消/超时的本质
go·context·上下文·ai问答
m0_502724959 小时前
Go 语言 defer 在命名返回值 和 匿名返回值 函数中的表现不一样
go
java知路11 小时前
解决 Go 编译速度慢的问题
go
审判长烧鸡1 天前
【Go Interface】接口诞生的意义
go·接口·interface
审判长烧鸡1 天前
【Go i18n】TOML语言包
go·i18n·语言包
用户398346161201 天前
Go-Spring 实战第 10 课 —— 依赖注入的方式：字段注入和构造函数注入
spring·go
用户398346161201 天前
Go-Spring 实战第 9 课 —— IoC 容器：复杂 Go 应用如何统一对象装配
spring·go
审判长烧鸡1 天前
【Go Generics】泛型为何而生的
go·泛型·overload·重载·generics
用户398346161201 天前
Go-Spring 实战第 8 课 —— 变量引用与动态刷新：配置值如何复用和更新
spring·go
热门推荐
01GitHub 镜像站点02Codex 接入 DeepSeek API 完整配置文档03【踩坑记录 | 第一篇】微软商店无法使用时，如何手动安装 OpenAI Codex？附`.msix`文件系统错误解决方法04裂开！ChatGPT 居然开始要手机号验证，附详细解决方法05CC-Switch & Claude 基于 Linux 服务器安装使用指南06【AI】2026 年具身智能模型和世界模型总结07几个好用的ip纯净度检测网站08codex app每次打开重连5次Reconnecting问题解决09装上就回不去了：CodeGraph 让 AI 编程效率飙升 92%，它到底做了什么？10CC-Switch 全平台下载、安装与使用全指南（Windows/macOS/Linux）