? ????? Golang ??? ????? ??? ??? ?? ??? ????? ???? ??? ?? ?????. ?? ???? Alibaba Cloud OSS? ????? ?? ??? ???? ????. ?? ?? ??? ?? ?? ???? ?? ? ??? ?????.

?? ???? ?? ??? ??? ???? ??? ?????.

 <code>content := `<img  class="wscnph lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/001/246/273/174278558460021.jpg" alt="Golang? ???? ??? ??? ?? ??? ??? ????? ??? ??????" ><img  class="wscnph lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/001/246/273/174278558769141.jpg" alt="Golang? ???? ??? ??? ?? ??? ??? ????? ??? ??????" > `</code>

??? ????? OSS? ??? ? ?? ?? ??? ??????. ?? ???? ?? ??? ???, ?? ?? OSS ?????? ??? ? ?? ? ??? ??? ?????.

???? ?? ?? ??? ?????.

1. Singleton OSS Client : sync.Once ???? oss.New ? ?? ??????? OSS ????? ????? ??? ? ??? ?????.

2. ?? ??? : goroutine ???? ?? ???? ???? ??? ???? ??? OSS? ???????.

3. ?? ???? (?? ??) : ??? ???? ?? ???? ??? ?? ??? ? ???? ?? ? ? ?? ??? ???? ?? ?? ( sync.Map )? ?????.

?? ? ??? ??? ????.

 ??? ??

?? (??)
    "???"
    "FMT"
    "Regexp"
    "strconv"
    "?"
    "??"
    "??"

    "github.com/aliyun/aliyun-oss-go-sdk/oss"
))

// ... (Aliyun OSS ?? : ?? ???, ?, AccessKeysEcret, BucketName) ...

var (
    ossclient *oss.client
    ?? ???
    imgcache sync.map // ? : ?? URL, ? : New URL
))

funcc getossclient () *oss.client {
    ? ? .do (func () {
        ?????, err : = OSS (endpoint, ?, AccessKeysEcret)
        err! = nil {? ??
            PANIC (err) // ?????? ???? ??? ?????
        }
        ossclient = ?????
    })
    ossclient? ??????
}


func upload (url string) (???, ??) {
    ????? : = getossclient ()
    ??, err : = client.bucket (BucketName)
    err! = nil {? ??
        ?? "", err
    }

    t1 : = time.now (). unix ()
    long : = 0 // ??? ? ???,?? ??? ???? ??????.
    obj : = fmt.sprintf ( "??/%d%d.png", t1, long)

    err = bucket.putobject (obj, bytes.newreader (readimgdata (url))) // readimgdata ??? ????? ?????.
    err! = nil {? ??
        ?? "", err
    }
    "https : //"bucetname "? ?????." ?? ??? "/"obj, nil
}

func Repimages (htmls string) ??? {
    var imgre = regexp.mustCompile (`<img  alt="Golang? ???? ??? ??? ?? ??? ??? ????? ??? ??????" > ]*src = [ " '] ([^"']) [ "] [^>]*>`) // ?? ? regex
    imgs : = imgre.findallstringsubmatch (htmls, -1)
    var wg sync.waitgroup
    resultchan : = make (Chan String, Len (IMG))

    _, img : = ?? imgs {
        LEN (IMG)> 1 {? ??
            Oldurl : = IMG [1]
            newurl ? ??, ok : = imgcache.load (oldurl); ??? {
                resultchan <img  class="wscnph lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/001/246/273/174278558769141.jpg" alt="Golang? ???? ??? ??? ?? ??? ??? ????? ??? ??????" > `
    fmt.println (Repimages (content))
}

// ?? ??? ?? ??? ?? ?? ?
func readimgdata (url string) [] byte {
    // ??? ?? ??? ?? ???? ?????
    // ...
    ?? [] ??? ( "??? ???")
}

Alibaba Cloud OSS ??? Endpoint , key , AccessKeySecret ? BucketName ??????. ?? ??? ?? ReadImgData ??? ???????. ? ?? ? ??? ???? ??? ???? ?? ??? ??? ???? ???? ?? ??????. ???? ??? ??? ?? ?? ??? ???????. ??? ??? ???? ?? LRU ?? ??? ???? ? ?? ????? ??? ??? ? ? ????.

? ??? Golang? ???? ??? ??? ?? ??? ??? ????? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!