GO语言实现二维码扫码的示例代码

go get -u github.com/medivhzhan/weapp/v3

import(
    "github.com/medivhzhan/weapp/v3"
    "github.com/medivhzhan/weapp/v3/wxacode"
)
func main() {
    var key = strings.ReplaceAll(uuid.NewString(), "-", "")
    newWxaCode := weapp.NewClient(appid, secret).NewWXACode()
    httpResponse, cmdErr, err := newWxaCode.GetUnlimited(&wxacode.UnlimitedQRCode{
        Scene:     key,
        Page:      "pages/organization/receive/QR",
        Width:     300,
        AutoColor: false,
        LineColor: wxacode.Color{
            R: "0",
            G: "0",
            B: "0",
        },
        IsHyaline:  false,
        EnvVersion: "",
        CheckPath:  false,
    })
    if err != nil {
        // 这是我们内部的返回异常，请替换成自己项目的进行返回
        web.NewErrorResponse(c, QrcodeException.SetMsg(err.Error()).Return(http.StatusBadRequest)
        return
    }
    // 检验生成是否有错误
    if cmdErr.ErrCode != 0 {
        response := web.NewErrorResponse(c, QrcodeException.SetMsg(cmdErr.ErrMSG), "")
        response.Return(http.StatusBadRequest)
        return
    }
    // 我们读取数据要关闭，否则会导致链接池错误
    defer httpResponse.Body.Close()
    // qrCode就是[]byte类型的二维码了，通过json返回就可以在页面上展示了
    qrCode, err := io.ReadAll(code.Body)
    if err != nil {
        web.NewErrorResponse(c, QrcodeException.SetMsg(err.Error()).Return(http.StatusBadRequest)
        return
    }
    // 代码未结束...查看下面文章并且拼接到此位置
}

type QRCodeKey string
var (
    QRToken          QRCodeKey = "token"
    QRScene          QRCodeKey = "scene"
    QRExpire         QRCodeKey = "expire"
    QRTokenExpire    QRCodeKey = "token_expire"
    QRUser           QRCodeKey = "user"
    QRLimit          QRCodeKey = "limit"
    QROwner          QRCodeKey = "owner"
    QRIsNeedApproval QRCodeKey = "is_need_approval"
    QRCreate         QRCodeKey = "create"
)
var MemoryQRCodeLoginStorage = make(map[string]map[QRCodeKey]any)

currentTime := time.Now()
data := make(map[QRCodeKey]any)
data[QRExpire] = currentTime.Add(time.Minute * time.Duration(params.EffectiveTime))
data[QRLimit] = params.Count
data[QRUser] = gin.H{
    "id":   user.ID,
    "name": user.Nickname,
}
data[QROwner] = gin.H{
    "id":   owner.ID,
    "name": owner.Name,
}
data[QRCreate] = currentTime.Format(time.DateTime)
data[QRIsNeedApproval] = params.IsNeedApproval
cache := MemoryQRCodeLoginStorage
cache[key] = data
web.NewSingleResponse(c, gin.H{
        "createAt": currentTime.Format(time.DateTime),
        "qrCode":   qrCodeData,
}).Return(http.StatusOK)

func (api ownerApi) QrCodeInformation(c *gin.Context) {
    var params OwnerInformationRequest
    if err := c.ShouldBindQuery(&params); err != nil {
        web.NewErrorResponse(c, ErrorParams, err.Error()).Return(http.StatusBadRequest)
        return
    }
    cache := MemoryQRCodeLoginStorage
    m := cache[params.Key]
    expire := m[v1.QRExpire]
    if t, ok := expire.(time.Time); ok {
        expire = t.Format(time.DateTime)
    }
    web.NewSingleResponse(c, gin.H{
        "expire":   expire,
        "limit":    m[v1.QRLimit],
        "owner":    m[v1.QROwner],
        "user":     m[v1.QRUser],
        "createAt": m[v1.QRCreate],
    }).Return(http.StatusOK)
}