怎么实现wx.request的同步 - WXOPEN Club

let buf;

if (bluetoothType == "jeez") { //简易蓝牙的指令

buf = that.string2buffer("open:05s");

}

if (bluetoothType == "mac") { //门禁机的指令

buf = that.string2buffer("-b&-3-12069-");

}

if (bluetoothType == "jz") { //嵌入式门禁开门指令

//获取用户的门禁权限列表

let powerList_url = 'CustomerAPI/Index.aspx?method=getdoorsauthpool&clientcode=559574802685&doornumber=qrs001';

http.get(powerList_url).then(res => {

// let hex = '0101fe 010201'

let hex = res.data;

//16进制字符串转为ArrayBuffer

let typedArray = new Uint8Array(hex.match(/[\da-f]{2}/gi).map(function (h) {

return parseInt(h, 16)

}))

buf = typedArray.buffer

}).catch(res => {

});

}

//发送开门指令

wx.writeBLECharacteristicValue({

deviceId: deviceId,

serviceId: serviceId,

characteristicId: write_id,

value: buf,

success: function (res) {

console.log("buf", buf);

console.log("write-suc", res);

},

fail(res) {

console.log(res);

//发送开门指令失败时提示

that.openDoorFail(deviceId);

}

})

因为只有一个if中需要请求接口，所以不希望将wx.writeBLECharacteristicValue加入到promise.then中，有能么办法能让这段代码同步执行吗？

wx.writeBLECharacteristicValue 这一团内容写成一个方法

在最后一个if里加个else，调用方法，另外在网络请求的回调里也写上调用该方法