初始化

app/cfg/cfg_app.go

@@ -10,7 +10,11 @@ type Config struct {
 	CurlDebug        bool                `yaml:"curldebug"`
 	SrvAddr          string              `yaml:"srv_addr"`
 	RedisAddr        string              `yaml:"redis_addr"`
+	MqWorkQueueName  string              `yaml:"mq_work_queue_name"`
+	RabbitMqAddr     string              `yaml:"rabbitMq_addr"`
+	RabbitMqAddrTest string              `yaml:"rabbitMq_addr_test"`
 	DB               DBCfg               `yaml:"db"`
+	MQ               MQCfg               `yaml:"mq"`
 	Log              LogCfg              `yaml:"log"`
 	ArkID            ArkIDCfg            `yaml:"arkid"`
 	Admin            AdminCfg            `yaml:"admin"`
@@ -62,6 +66,13 @@ type DBCfg struct {
 	Path         string        `yaml:"path"` //日志文件存放路径
 }
 
+type MQCfg struct {
+	Host string `yaml:"host"`
+	Port string `yaml:"port"`
+	User string `yaml:"user"`
+	Pwd  string `yaml:"pwd"`
+}
+
 //日志配置结构体
 type LogCfg struct {
 	AppName    string `yaml:"app_name" `

app/cfg/init_cfg.go

@@ -15,6 +15,7 @@ var (
 	SrvAddr          string
 	RedisAddr        string
 	DB               *DBCfg
+	MQ               *MQCfg
 	Log              *LogCfg
 	ArkID            *ArkIDCfg
 	Admin            *AdminCfg
@@ -22,6 +23,8 @@ var (
 	WxappletFilepath *WxappletFilepathCfg
 	Local            bool
 	AppComm          *AppCommCfg
+	MqWorkQueueName  string
+	RabbitMqAddr     string
 )
 
 //初始化配置文件，将cfg.yml读入到内存
@@ -57,4 +60,10 @@ func InitCfg() {
 	Official = &conf.Official
 	WxappletFilepath = &conf.WxappletFilepath
 	AppComm = &conf.AppComm
+	MqWorkQueueName = conf.MqWorkQueueName
+	RabbitMqAddr = conf.RabbitMqAddrTest
+	if conf.Prd {
+		RabbitMqAddr = conf.RabbitMqAddr
+	}
+	MQ = &conf.MQ
 }

app/cfg/init_rabbitmq.go

@@ -0,0 +1,28 @@
+package cfg
+
+import (
+	"code.fnuoos.com/go_rely_warehouse/zyos_go_mq.git/rabbit"
+	"encoding/json"
+	"os"
+	"strings"
+	"time"
+)
+
+func InitMq() {
+	data, _ := json.Marshal(MQ)
+	filePutContents("init_rabbit_mq", string(data))
+	err := rabbit.Init(MQ.Host, MQ.Port, MQ.User, MQ.Pwd)
+	if err != nil {
+		filePutContents("init_rabbit_mq", err.Error())
+		return
+	}
+}
+
+func filePutContents(fileName string, content string) {
+	fd, _ := os.OpenFile("./tmp/"+fileName+".log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0644)
+	fd_time := time.Now().Format("2006-01-02 15:04:05")
+	fd_content := strings.Join([]string{"[", fd_time, "] ", content, "\n"}, "")
+	buf := []byte(fd_content)
+	fd.Write(buf)
+	fd.Close()
+}

go.mod

@@ -3,6 +3,7 @@ module applet
 go 1.15
 
 require (
+	code.fnuoos.com/go_rely_warehouse/zyos_go_mq.git v0.0.3
 	github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
 	github.com/boombuler/barcode v1.0.1
@@ -25,7 +26,7 @@ require (
 	github.com/gorilla/sessions v1.2.1 // indirect
 	github.com/iGoogle-ink/gopay v1.5.36
 	github.com/iGoogle-ink/gotil v1.0.20
-	github.com/json-iterator/go v1.1.10 // indirect
+	github.com/json-iterator/go v1.1.10
 	github.com/leodido/go-urn v1.2.1 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/makiuchi-d/gozxing v0.0.0-20210324052758-57132e828831
@@ -33,6 +34,7 @@ require (
 	github.com/qiniu/api.v7/v7 v7.8.2
 	github.com/robfig/cron/v3 v3.0.1
 	github.com/sony/sonyflake v1.0.0
+	github.com/streadway/amqp v1.0.0
 	github.com/swaggo/swag v1.7.0
 	github.com/syyongx/php2go v0.9.4
 	github.com/tidwall/gjson v1.7.4

main.go

@@ -1,19 +1,17 @@
 package main
 
 import (
-	"context"
+	"applet/app/cfg"
+	"applet/app/db"
+	"applet/app/utils"
+	"applet/app/utils/logx"
+	"applet/processor"
+	"errors"
 	"fmt"
-	"log"
-	"net/http"
 	"os"
 	"os/signal"
+	"strings"
 	"syscall"
-	"time"
-
-	"applet/app/cfg"
-	"applet/app/db"
-	"applet/app/router"
-	"applet/app/utils"
 )
 
 //系统初始化
@@ -21,6 +19,7 @@ func init() {
 	cfg.InitCfg()   //配置初始化
 	cfg.InitLog()   //日志初始化
 	cfg.InitCache() //缓存初始化
+	cfg.InitMq()    //队列初始化
 	if cfg.Debug {  //判断是否是debug
 		if err := db.InitDB(cfg.DB); err != nil { //主数据库初始化
 			panic(err)
@@ -44,45 +43,50 @@ func init() {
 // @name MasterID
 // @BasePath /
 func main() {
-	// 启动获取所有品牌
-	//go taoke.GetAllBrand()
-	r := router.Init() //创建路由
-	// arkid.Init()
-	srv := &http.Server{ //设置http服务参数
-		Addr:    cfg.SrvAddr, //指定ip和端口
-		Handler: r,           //指定路由
-	}
-	// 读取默认站长的推广位 并写进redis
-	// master, err := db.UserProfileFindByID(,"1")
-
-	// if err != nil {
-	// 	panic(err)
-	// }
 	if cfg.CurlDebug {
 		utils.CurlDebug = true
 	}
-	//
-	// if has := cache.SetJson(svc.SysCfgGet(nil, "app_name")+"_default_pid_user", master, 0); has != true {
-	// 	panic(errors.New("设置默认pid缓存失败"))
-	// }
-	// Initializing the server in a goroutine so that it won't block the graceful shutdown handling below
-	go func() { //协程启动监听http服务
-		fmt.Println("Listening and serving HTTP on " + cfg.SrvAddr)
-		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
-			log.Fatalf("listen: %s\n", err)
-		}
-	}()
-	// graceful shutdown
+	//r := router.Init() //创建路由
+	//srv := &http.Server{ //设置http服务参数
+	//	Addr:    cfg.SrvAddr, //指定ip和端口
+	//	Handler: r,           //指定路由
+	//}
+	//go func() { //协程启动监听队列
+	//	fmt.Println("Listening and serving HTTP on " + cfg.SrvAddr)
+	//	if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+	//		log.Fatalf("listen: %s\n", err)
+	//	}
+	//}()
 	//退出go守护进程
+	//quit := make(chan os.Signal)
+	//signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	//<-quit
+	//log.Println("Shutting down server...")
+	//ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	//defer cancel()
+	//if err := srv.Shutdown(ctx); err != nil {
+	//	log.Fatal("Server forced to shutdown:", err)
+	//}
+	//log.Println("Server exiting")
+
+	//获取需要监听多少个队列
+	if cfg.RabbitMqAddr == "" {
+		panic(errors.New("请填写MQ参数"))
+	}
+	forever := make(chan bool)
+	for _, workQueueName := range strings.Split(cfg.MqWorkQueueName, ",") {
+		if workQueueName == "" {
+			continue
+		}
+		fmt.Printf("监听%s队列", workQueueName)
+		fmt.Println()
+		go processor.WorkReceive(workQueueName)
+	}
+	//processor.TestWorkSend()
+	<-forever
 	quit := make(chan os.Signal)
 	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
 	<-quit
-	log.Println("Shutting down server...")
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-	defer cancel()
-	if err := srv.Shutdown(ctx); err != nil {
-		log.Fatal("Server forced to shutdown:", err)
-	}
-	log.Println("Server exiting")
+	_ = logx.Info("Server exiting...")
 
 }

processor/mq_processor.go

@@ -0,0 +1,77 @@
+package processor
+
+import (
+	"applet/app/utils"
+	"applet/app/utils/logx"
+	"bytes"
+	"code.fnuoos.com/go_rely_warehouse/zyos_go_mq.git/rabbit"
+	"encoding/json"
+	jsoniter "github.com/json-iterator/go"
+	"github.com/streadway/amqp"
+	"log"
+	"strings"
+)
+
+var Json = jsoniter.ConfigCompatibleWithStandardLibrary
+
+type Message struct {
+	MessageType string `json:"message_type"`
+	Data        int    `json:"data"`
+}
+
+func WorkReceive(name string) {
+	ch, err := rabbit.Cfg.Pool.GetChannel()
+	if err != nil {
+		logx.Error(err)
+		return
+	}
+	defer ch.Release()
+	//接收消息时，指定
+	msgs := ch.Consume(name)
+	for msg := range msgs {
+		var message2 Message
+		jsonStr := string(msg.Body)
+		jsonStr = strings.Trim(jsonStr, "\"")
+		jsonStr = strings.ReplaceAll(jsonStr, "\\", "")
+		utils.Unserialize([]byte(jsonStr), &message2)
+		switch message2.MessageType {
+		case "test":
+			go func(msg *amqp.Delivery) {
+				log.Printf("recevie1  Received a message: %s", msg.Body)
+				msg.Ack(true)
+			}(&msg)
+		}
+
+	}
+}
+
+func TestWorkSend() {
+	// 推入rabbitMq
+	ch, err := rabbit.Cfg.Pool.GetChannel()
+	if err != nil {
+		logx.Error(err)
+	}
+	defer ch.Release()
+	var message struct {
+		MessageType string `json:"message_type"`
+		Data        int    `json:"data"`
+	}
+	message.MessageType = "test"
+	message.Data = 1
+	for message.Data < 2 {
+		ch.Publish("test_work_queue_processor", utils.SerializeStr(message), "")
+		message.Data += 1
+		//time.Sleep(time.Second * 5)
+	}
+}
+
+// 去除json中的转义字符
+func disableEscapeHtml(data interface{}) (string, error) {
+	bf := bytes.NewBuffer([]byte{})
+	jsonEncoder := json.NewEncoder(bf)
+	jsonEncoder.SetEscapeHTML(true)
+	if err := jsonEncoder.Encode(data); err != nil {
+		return "", err
+	}
+	return bf.String(), nil
+}

test/aces_test.go

@@ -1,175 +0,0 @@
-package test
-
-import (
-	"applet/app/db"
-	"applet/app/md"
-	"applet/app/svc"
-	"applet/app/utils"
-	"encoding/base64"
-	"encoding/json"
-	"fmt"
-	"testing"
-)
-
-func TestAesCrypt_Encrypt(t *testing.T) {
-	var aesCrypt = utils.AesCrypt{
-		Key: []byte("e{&[^<wpliI$AgKs:>Ft(.~g]1eR-]VO"),
-		Iv:  []byte("ZV`7<5X]/2brS@sz"),
-	}
-
-	var text = `{"uid":"82","applyOrder":"821607392542143106","db":{"db_host":"119.23.182.117","db_port":"3306","db_name":"fnuoos_template","db_username":"root","db_password":"Fnuo123com@"}}`
-	result, err := aesCrypt.Encrypt([]byte(text))
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-
-	pass64 := base64.StdEncoding.EncodeToString(result)
-	fmt.Println(pass64)
-}
-
-func TestAesCrypt_Decrypt(t *testing.T) {
-	var aesCrypt = utils.AesCrypt{
-		Key: []byte("e{&[^<wpliI$AgKs:>Ft(.~g]1eR-]VO"),
-		Iv:  []byte("ZV`7<5X]/2brS@sz"),
-	}
-
-	pass64 := "JD0RXX1YbZPWKeNiVKsq0jQ1Bfnbln3fIMcmJkovU5gUCf329y9ZdqECWe4OKpoOk25/hPNaBH9VwellhIQhpw=="
-	bytesPass, err := base64.StdEncoding.DecodeString(pass64)
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-
-	plainText, err := aesCrypt.Decrypt(bytesPass)
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-
-	fmt.Println(string(plainText))
-}
-
-func Test_Vi(t *testing.T) {
-	fmt.Println("123")
-	fmt.Println([]byte("ZV`7<5X]/2brS@sz"))
-}
-
-func Test_CombineData(t *testing.T) {
-	data :=
-		`{
-        "Uid": 21699,
-        "Lv": 0,
-        "NewLv": 0,
-        "LevelWeight": -1,
-        "Profit": 7.13,
-        "SubsidyFee": 0,
-        "ProfitList": [
-            {
-                "cid": "0",
-                "val": 7.13
-            },
-            {
-                "cid": "1",
-                "val": 10
-            },
-            {
-                "cid": "19",
-                "val": 120
-            },
-            {
-                "cid": "20",
-                "val": 0
-            },
-            {
-                "cid": "21",
-                "val": 0
-            }
-        ],
-        "SubsidyFeeList": null,
-        "OwnbuyReturnType": 0,
-        "Diff": 0,
-        "ParentUser": {
-            "Uid": 553,
-            "Lv": 8,
-            "NewLv": 0,
-            "LevelWeight": 2,
-            "Profit": 0,
-            "SubsidyFee": 0,
-            "ProfitList": [
-                {
-                    "cid": "0",
-                    "val": 0
-                }
-            ],
-            "SubsidyFeeList": null,
-            "OwnbuyReturnType": 0,
-            "Diff": 1,
-            "ParentUser": {
-				"Uid": 21699,
-				"Lv": 0,
-				"NewLv": 0,
-				"LevelWeight": -1,
-				"Profit": 7.13,
-				"SubsidyFee": 0,
-				"ProfitList": [
-					{
-						"cid": "0",
-						"val": 7.13
-					},
-					{
-						"cid": "1",
-						"val": 10
-					},
-					{
-						"cid": "19",
-						"val": 120
-					},
-					{
-						"cid": "20",
-						"val": 0
-					},
-					{
-						"cid": "21",
-						"val": 0
-					}
-				],
-				"SubsidyFeeList": null,
-				"OwnbuyReturnType": 0,
-				"Diff": 0,
-				"ParentUser": {
-					"Uid": 553,
-					"Lv": 8,
-					"NewLv": 0,
-					"LevelWeight": 2,
-					"Profit": 0,
-					"SubsidyFee": 0,
-					"ProfitList": [
-						{
-							"cid": "0",
-							"val": 0
-						}
-					],
-					"SubsidyFeeList": null,
-					"OwnbuyReturnType": 0,
-					"Diff": 1,
-					"ParentUser": null
-				}
-			}
-        }
-    }`
-	bytes := []byte(data)
-	var lvUser md.LvUser
-	if err := json.Unmarshal(bytes, &lvUser); err != nil {
-		fmt.Println(err)
-		return
-	}
-	dataSlice := svc.CombineVirtualCoinRelateData(&lvUser, 249534162504132595, "mall_goods", 0)
-	for _, item := range dataSlice {
-		fmt.Printf("%#v\n", item)
-	}
-	err := db.DbInsertBatch(db.DBs["123456"], dataSlice)
-	if err != nil {
-		fmt.Println(err)
-	}
-}

test/toke_test.go

@@ -1,35 +0,0 @@
-package test
-
-import (
-	"applet/app/db"
-	"applet/app/lib/taoke"
-	"applet/app/svc"
-	"fmt"
-	"testing"
-)
-
-func TestBrandList(t *testing.T) {
-	tkBrandStruct, err := taoke.BrandList("1", "20")
-	if err != nil {
-		t.Error(err)
-	}
-	for _, brandStruct := range *tkBrandStruct {
-		fmt.Println(brandStruct)
-	}
-
-}
-
-func TestSuperCategory(t *testing.T) {
-	category, err := taoke.SuperCategory()
-	if err != nil {
-		t.Error(err)
-	}
-	for _, brandStruct := range *category {
-		fmt.Println(brandStruct)
-	}
-}
-
-func TestAddBrandDB(t *testing.T) {
-	engine := db.DBs["123456"]
-	svc.AddBrandDB(engine)
-}

test/work_queue_test.go

@@ -0,0 +1,33 @@
+package test
+
+import (
+	"applet/app/utils"
+	"code.fnuoos.com/go_rely_warehouse/zyos_go_mq.git/rabbit"
+	"testing"
+	"time"
+)
+
+const WorkQueueName = "test_work_queue"
+
+/**
+TODO:: 公平分发模式下的发送端和接收端(一个发动端，多个接受端)
+*/
+func TestWorkSend(t *testing.T) {
+	// 推入rabbitMq
+	ch, err := rabbit.Cfg.Pool.GetChannel()
+	if err != nil {
+		t.Error(err)
+	}
+	defer ch.Release()
+	var message struct {
+		MessageType string `json:"message_type"`
+		Data        int    `json:"data"`
+	}
+	message.MessageType = "test"
+	message.Data = 1
+	for message.Data < 10 {
+		ch.Publish(WorkQueueName+"_processor", utils.SerializeStr(message), "")
+		message.Data += 1
+		time.Sleep(time.Second * 5)
+	}
+}

test/zhimeng_api.go

@@ -1,156 +0,0 @@
-package test
-
-import (
-	"fmt"
-	"github.com/gocolly/colly"
-	"github.com/gocolly/colly/extensions"
-	"github.com/tidwall/gjson"
-	"net/http"
-	"regexp"
-	"strings"
-)
-
-/*
-目前可用接口
-[商品查询]https://www.showdoc.com.cn/59349170678610?page_id=339616554551473
-[商品详情]https://www.showdoc.com.cn/59349170678610?page_id=339687047645094
-
-*/
-
-// Response is SDK Response
-type Response struct {
-	Msg     string      `json:"msg"`
-	Success int         `json:"success"`
-	Data    interface{} `json:"data"`
-}
-
-func main() {
-	// // JD
-	// postData := map[string]string{"keyword": "联想", "p": "1", "size": "10"}
-	// fmt.Println(postData["time"])
-	// res, _ := zhimeng.Send("jd", "getgoods", postData)
-	// fmt.Println(string(res))
-	// p := Response{}
-	// json.Unmarshal(res, &p)
-	// fmt.Println(p)
-	// // VIP
-	// postData = map[string]string{"keyword": "联想", "p": "1", "size": "10", "order": "0"}
-	// fmt.Println(postData["time"])
-	// res, _ = zhimeng.Send("wph", "seach_goods", postData)
-	// fmt.Println(string(res))
-	// p = Response{}
-	// json.Unmarshal(res, &p)
-	// fmt.Println(p)
-	// // PDD
-	// postData = map[string]string{"keyword": "联想", "p": "1", "size": "10", "sort": "goods_price asc"}
-	// res, _ = zhimeng.Send("pdd", "getgoods", postData)
-	// fmt.Println(string(res))
-	// p = Response{}
-	// json.Unmarshal(res, &p)
-	// fmt.Println(p)
-	for i := 0; i < 1000; i++ {
-		fmt.Println(i)
-		scrapPDD()
-	}
-}
-
-func scrapJD() {
-	c := colly.NewCollector(func(collector *colly.Collector) {
-		extensions.RandomUserAgent(collector)
-	})
-	c.OnResponse(func(r *colly.Response) {
-		re, _ := regexp.Compile(`[(]//[^\s]*[)]`)
-		body := r.Body
-		fmt.Println(string(body))
-		urls := re.FindAllString(string(body), -1)
-		fmt.Println(urls)
-		for _, url := range urls {
-			url = strip(url, "()")
-			url = "https:" + url
-			fmt.Println(url)
-		}
-	})
-	c.Visit("https://wqsitem.jd.com/detail/100008309360_d100008309360_normal.html")
-}
-
-func scrapPDD() {
-	var cookies = []*http.Cookie{}
-	var mapcookies = make(map[string]string)
-	url := fmt.Sprintf("https://mobile.yangkeduo.com/goods.html?goods_id=%s", "156632692649")
-	cs := "api_uid=CiHUKl9DZKpL6QBVK4qWAg==; _nano_fp=Xpdbl0PyX5Pxn0TynT_DTGXbst0kz5cjzGAQDnBR; ua=Mozilla%2F5.0%20(Windows%20NT%2010.0%3B%20Win64%3B%20x64)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F84.0.4147.135%20Safari%2F537.36; webp=1; quick_entrance_click_record=20200824%2C1; PDDAccessToken=XRC6FNX7FRBL6AJRMRBRN4CDG2PZXO3YJZYHFUA4O2PLDAWVYXHA1125821; pdd_user_id=9622705741400; pdd_user_uin=F27EAZ4V5S7EGEVMCJI2P7RFLE_GEXDA; chat_config={'host_whitelist':['.yangkeduo.com','.pinduoduo.com','.10010.com/queen/tencent/pinduoduo-fill.html','.ha.10086.cn/pay/card-sale!toforward.action','wap.ha.10086.cn','m.10010.com']}; pdd_vds=gaLMNqmfGfyYEpyYiZGWopaCicNHbXGWtDNcOZnWLqiDNfLHOXnZaqtCLDiX"
-	csList := strings.Split(cs, ";")
-	for _, c := range csList {
-		s := strings.Trim(c, " ")
-		sList := strings.SplitN(s, "=", 2)
-
-		mapcookies[sList[len(sList)-len(sList)]] = sList[(len(sList) - len(sList) + 1)]
-
-	}
-	fmt.Println(mapcookies)
-	for key, value := range mapcookies {
-		if key == "ua" {
-			continue
-		}
-		cookies = append(cookies, &http.Cookie{Name: key, Value: value})
-	}
-	c := colly.NewCollector(
-		colly.UserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.135 Safari/537.36"),
-	)
-
-	c.OnResponse(func(r *colly.Response) {
-		re, _ := regexp.Compile(`window.rawData=.*}`)
-		body := r.Body
-		fmt.Println(string(body))
-		result := re.FindString(string(body))
-		// fmt.Println(result)
-		result = strings.SplitN(result, "=", 2)[1]
-		// fmt.Println(result)
-		value := gjson.Get(result, "store.initDataObj.goods.detailGallery")
-		// fmt.Println(value)
-		list := value.Array()
-		imageList := []string{}
-		for _, v := range list {
-			nv := gjson.Get(v.String(), "url")
-			imageList = append(imageList, nv.String())
-		}
-		fmt.Println(imageList)
-		ck := c.Cookies("https://mobile.yangkeduo.com")
-		fmt.Println(ck)
-		cookies = ck
-	})
-
-	c.SetCookies("https://mobile.yangkeduo.com", cookies)
-
-	c.Visit(url)
-}
-
-func strip(ss string, charss string) string {
-	s, chars := []rune(ss), []rune(charss)
-	length := len(s)
-	max := len(s) - 1
-	l, r := true, true //标记当左端或者右端找到正常字符后就停止继续寻找
-	start, end := 0, max
-	tmpEnd := 0
-	charset := make(map[rune]bool) //创建字符集，也就是唯一的字符，方便后面判断是否存在
-	for i := 0; i < len(chars); i++ {
-		charset[chars[i]] = true
-	}
-	for i := 0; i < length; i++ {
-		if _, exist := charset[s[i]]; l && !exist {
-			start = i
-			l = false
-		}
-		tmpEnd = max - i
-		if _, exist := charset[s[tmpEnd]]; r && !exist {
-			end = tmpEnd
-			r = false
-		}
-		if !l && !r {
-			break
-		}
-	}
-	if l && r { // 如果左端和右端都没找到正常字符，那么表示该字符串没有正常字符
-		return ""
-	}
-	return string(s[start : end+1])
-}