使用go协程查看app的上架情况

package main

import (
    "encoding/json"
    "fmt"
    "log"
    "net/http"
    "regexp"
)

var androidCh = make(chan int)

type ChannelInfo struct {
    ChannelName string `json:channelName`
    ChannelUrl  string `json:channelUrl`
    MustCompile string `json:mustCompile`
}

func main() {

    var infArray []ChannelInfo

jsonstr := `[
    {
        "channelName":"baidu",
        "channelUrl":"https://shouji.baidu.com/software/26050113.html",
        "mustCompile":"版本: \\d\\.\\d.\\d"
    },
    {
        "channelName":"vivo",
        "channelUrl":"http://info.appstore.vivo.com.cn/detail/53311",
        "mustCompile":"版本：\\d\\.\\d.\\d"
    },
    {
        "channelName":"meizu",
        "channelUrl":"http://app.meizu.com/apps/public/detail?package_name=com.xiangha",
        "mustCompile":"\\d\\.\\d.\\d"
    },
    {
        "channelName":"huawei",
        "channelUrl":"https://appstore.huawei.com/app/C189595",
        "mustCompile":"版本： <span>\\d\\.\\d.\\d"
    },
    {
        "channelName":"wandoujia",
        "channelUrl":"https://www.wandoujia.com/apps/com.xiangha",
        "mustCompile":"</dt><dd>&nbsp;\\d\\.\\d.\\d"
    },
    {
        "channelName":"xiaomi",
        "channelUrl":"http://app.xiaomi.com/detail/34140",
        "mustCompile":"版本号：</li><li>\\d\\.\\d.\\d"
    },
    {
        "channelName":"360",
        "channelUrl":"http://zhushou.360.cn/detail/index/soft_id/245542",
        "mustCompile":"版本：</strong>\\d\\.\\d.\\d"
    },
    {
        "channelName":"应用宝",
        "channelUrl":"https://sj.qq.com/myapp/detail.htm?apkName=com.xiangha",
        "mustCompile":"\"det-othinfo-data\">V\\d\\.\\d.\\d"
    }
]`
    if err:=json.Unmarshal([]byte(jsonstr),&infArray);err!=nil{

        fmt.Println("解析错误")
        return

    }

    for _, v := range infArray {
        go GetVesion(v)
    }
    for i, _ := range infArray {
        //go getVesion(v)
        i++
        <-androidCh

    }
}
func GetVesion(channelInfo ChannelInfo) {

    re, error := HttpUaGet(channelInfo.ChannelUrl)
    if error != nil {
        fmt.Println("error", error)
    }
    //fmt.Println(re)
    //解释正则表达r式 \d\.\d就是 数字.数字 的意思
    reg := regexp.MustCompile(channelInfo.MustCompile) //编译规则
    if reg == nil {
        fmt.Println("MustCompile err")
        return
    }

    //返回数组里面是字符串
    resultArray := reg.FindAllString(re, -1) //根据规则匹配buf中字符
    if len(resultArray) > 0 {
        resultStr := resultArray[0]
        if len(resultStr) > 0 {
            reg := regexp.MustCompile(`\d\.\d.\d`) //编译规则
            if reg == nil {
                fmt.Println("MustCompile err")
                return
            }
            resultArray := reg.FindAllString(resultStr, -1) //根据规则匹配buf中字符
            fmt.Println(channelInfo.ChannelName, "\t->\t版本号:", resultArray)
        }
    }else {
        fmt.Println("诶呀 错了 ",channelInfo.ChannelName)
    }

    androidCh <- 1
}
func HttpUaGet(url string) (result string, err error) {
    client := &http.Client{}
    req, err := http.NewRequest("GET", url, nil)
    if err != nil {
        log.Fatalln(err)
    }
    req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36")

    resp, eror := client.Do(req)
    if err != nil {
        err = eror
        return
    }
    buf := make([]byte, 4*1024)
    for {
        n, _ := resp.Body.Read(buf)
        if n == 0 {
            break
        }
        result += string(buf[:n])
    }
    defer resp.Body.Close()
    return
}

运行结果

360     ->  版本号: [7.4.0]
vivo    ->  版本号: [7.4.0]
meizu   ->  版本号: [7.4.0]
xiaomi  ->  版本号: [7.4.0]
应用宝     ->  版本号: [7.4.0]
huawei  ->  版本号: [7.4.0]
baidu   ->  版本号: [7.4.0]
wandoujia   ->  版本号: [7.4.0]