wx.request({
            url: \'https://api.weixin.qq.com/cgi-bin/token\',
            header: { \'content-type\': \'application/json\' },
            data: {
                grant_type: \'client_credential\',
                appid:\'appid
                secret: \'秘钥\'
            },
            success(res) {
                accessToken = res.data.access_token
                wx.request({
                    //url: \'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=\'+accessToken,
                    url: \'https://api.weixin.qq.com/wxa/getwxacode?access_token=\'+accessToken,
                    method: \'POST\',
                    responseType: \'arraybuffer\',
                    data: {
                        "path": \'扫码跳转的路径\',
                        "width": 430,   
                    },
                    success(res) {
                        console.log(res.data)
                        let base64 = wx.arrayBufferToBase64(res.data)
                        console.log(base64)
                        let codeImg= \'data:image/PNG;base64,\' + base64

                        console.log(codeImg)
                        _this.sdd = codeImg
                    },
                })
            }
        })