Alexa智能家居技能-需要帮助进行http请求

Question

我正在尝试自己构建一个家庭自动化系统。为此，我使用Blynk服务器来控制我的硬件。我可以通过请求blynk服务器的URL来控制我的硬件。

例如：当我向CCD_ 1发出请求并将虚拟引脚更新为"1"时；1〃；我的灯亮了。

我用它来制作Alexa自定义技能，它可以通过向Blynk服务器发出HTTPS请求来打开我的灯。例如，当我说"；Alexa要求我的房间开灯；。自定义技能正在正常工作。

但自定义技能并不是我真正想要的，所以我决定建立一个Alexa智能家居技能。所以我设置了一个，并简单地尝试在"；"接通"；或"；"关闭"；被调用。

我的问题是，每次我尝试发出HTTPS请求时，Alexa都会说设备没有响应。

我尝试了很多事情，但我无法独自解决我的问题。

代码：

代码来自node.js Alexa智能家居示例。

exports.handler = function (request, context) {
if (request.directive.header.namespace === 'Alexa.Discovery' && request.directive.header.name === 'Discover') {
log("DEBUG:", "Discover request",  JSON.stringify(request));
handleDiscovery(request, context, "");
}
else if (request.directive.header.namespace === 'Alexa.PowerController') {
if (request.directive.header.name === 'TurnOn' || request.directive.header.name === 'TurnOff') {
log("DEBUG:", "TurnOn or TurnOff Request", JSON.stringify(request));
handlePowerControl(request, context);
}
}
function handleDiscovery(request, context) {
var payload = {
"endpoints":
[
{
"endpointId": "demo_id",
"manufacturerName": "Smart Device Company",
"friendlyName": "Zimmerlicht",
"description": "Smart Device Switch",
"displayCategories": ["SWITCH"],
"cookie": {
"key1": "arbitrary key/value pairs for skill to reference this endpoint.",
"key2": "There can be multiple entries",
"key3": "but they should only be used for reference purposes.",
"key4": "This is not a suitable place to maintain current endpoint state."
},
"capabilities":
[
{
"type": "AlexaInterface",
"interface": "Alexa",
"version": "3"
},
{
"interface": "Alexa.PowerController",
"version": "3",
"type": "AlexaInterface",
"properties": {
"supported": [{
"name": "powerState"
}],
"retrievable": true
}
}
]
}
]
};
var header = request.directive.header;
header.name = "Discover.Response";
log("DEBUG", "Discovery Response: ", JSON.stringify({ header: header, payload: payload }));
context.succeed({ event: { header: header, payload: payload } });
}
function log(message, message1, message2) {
console.log(message + message1 + message2);
}
function handlePowerControl(request, context) {
// get device ID passed in during discovery
var requestMethod = request.directive.header.name;
var responseHeader = request.directive.header;
responseHeader.namespace = "Alexa";
responseHeader.name = "Response";
responseHeader.messageId = responseHeader.messageId + "-R";
// get user token pass in request
var requestToken = request.directive.endpoint.scope.token;
var powerResult;
if (requestMethod === "TurnOn") {
const Http = new XMLHttpRequest();
const url='https://139.59.206.133/myprivatekey/update/V1?value=1';
Http.open("GET", url);
Http.send();
// Make the call to your device cloud for control
// powerResult = stubControlFunctionToYourCloud(endpointId, token, request);
powerResult = "ON";
}
else if (requestMethod === "TurnOff") {
var xmlHttp = new XMLHttpRequest();
xmlHttp.open( "GET", 'http://myprivatekey/update/V0?value=0', false ); // false for synchronous request
xmlHttp.send( null );
// Make the call to your device cloud for control and check for success
// powerResult = stubControlFunctionToYourCloud(endpointId, token, request);
powerResult = "OFF";
}
var contextResult = {
"properties": [{
"namespace": "Alexa.PowerController",
"name": "powerState",
"value": powerResult,
"timeOfSample": "2017-09-03T16:20:50.52Z", //retrieve from result.
"uncertaintyInMilliseconds": 50
}]
};
var response = {
context: contextResult,
event: {
header: responseHeader,
endpoint: {
scope: {
type: "BearerToken",
token: requestToken
},
endpointId: "demo_id"
},
payload: {}
}
};
log("DEBUG", "Alexa.PowerController ", JSON.stringify(response));
context.succeed(response);
}
};

我的请求：

if (requestMethod === "TurnOn") {
const Http = new XMLHttpRequest();
const url='https://139.59.206.133/myprivatekey/update/V1?value=1';
Http.open("GET", url);
Http.send();
// Make the call to your device cloud for control
// powerResult = stubControlFunctionToYourCloud(endpointId, token, request);
powerResult = "ON";
}
else if (requestMethod === "TurnOff") {
var xmlHttp = new XMLHttpRequest();
xmlHttp.open( "GET", 'http://myprivatekey/update/V0?value=0', false ); // false for synchronous request
xmlHttp.send( null );
// Make the call to your device cloud for control and check for success
// powerResult = stubControlFunctionToYourCloud(endpointId, token, request);
powerResult = "OFF";
}

其他信息：

• 编程语言node.js
• 账户链接、IAM角色以及创建智能家居技能的一切都应该设置正确

我是Alexa技能构建的新手，而且我也不太擅长JavaScript。

Answer 1

如果请求通过了，我的意思是你的代码被调用了，灯被打开/关闭了，问题出在响应上。

我的猜测是您缺少关联id。

您需要添加以下内容：

responseHeader.correlationToken = request.directive.header.correlationToken;

您还应该实现EndpointHealth：https://developer.amazon.com/en-US/docs/alexa/device-apis/alexa-endpointhealth.html