问题：Google Actions 是否总是通过在每个用户输入上触发 webhook 帖子来工作，我只需要处理逻辑以便每次解析 json 并仅在找到我感兴趣的参数时才做出反应？或者有没有办法控制 Google Actions API 发布的 webhook 帖子，以便仅在通过包含感兴趣参数的值完全填充操作时发布它？
#详细信息：我在 Heroku 上部署了这个 nodejs 应用程序： https ://github.com/quique123/myjsonparser/blob/master/app.js
我将它用作 Google Actions API（数字精灵）示例的 webhook。在数字精灵中，用户以“与数字精灵交谈”开始游戏。精灵的回应是我在想一个数字……猜猜看。用户用一个数字做出响应，然后（并且仅在那时）运行逻辑以将猜测与答案进行比较。
但是我对来自谷歌主页的每个帖子请求都进行了 api 调用。换句话说，每次用户与对话 api 交互时都会创建 webhook 帖子。可以在这里看到 body 不包含用户输入参数并且 Heroku 响应“与数字精灵交谈”：
2017-04-30T18:59:19.480900+00:00 heroku[router]: at=info method=POST path="/API/switches/sw1?password=123456" host=myjsonparser.herokuapp.com request_id=64d51b1c-3253-4a64-b7f5-a29a7750945b fwd="54.224.155.160" dyno=web.1 connect=1ms service=35ms status=200 bytes=254 protocol=https
2017-04-30T18:59:19.473973+00:00 app[web.1]: headers: {"host":"myjsonparser.herokuapp.com","connection":"close","accept":"*/*","content-type":"application/json; charset=UTF-8","cache-control":"no-cache","pragma":"no-cache","user-agent":"Java/1.8.0_112","x-request-id":"64d51b1c-3253-4a64-b7f5-a29a7750945b","x-forwarded-for":"54.224.155.160","x-forwarded-proto":"https","x-forwarded-port":"443","via":"1.1 vegur","connect-time":"1","x-request-start":"1493578759443","total-route-time":"0","content-length":"575"}
2017-04-30T18:59:19.474002+00:00 app[web.1]: body: {"id":"14797289-b0b8-492a-b030-bf9f05c7ea17","timestamp":"2017-04-30T18:59:19.413Z","lang":"en","result":{"source":"agent","resolvedQuery":"talk to number genie","speech":"","action":"generate_answer","actionIncomplete":false,"parameters":{},"contexts":[],"metadata":{"intentId":"688b0da5-547e-4c7a-8adc-189844834bcc","webhookUsed":"true","webhookForSlotFillingUsed":"false","intentName":"start_game"},"fulfillment":{"speech":"","messages":[{"type":0,"speech":""}]},"score":0.61},"status":{"code":200,"errorType":"success"},"sessionId":"ff2e0c97-552b-40d3-8f06-32e612476897"}
2017-04-30T18:59:19.477116+00:00 app[web.1]: postSwitch {"id":"sw1","state":"off","name":"Koko's Lamp"}
当我使用 Google Actions API 上的数字对其进行测试时，您可以在 Heroku 对“44”的响应中看到 check_guess 包含在内：
2017-04-30T19:00:31.901297+00:00 app[web.1]: headers: {"host":"myjsonparser.herokuapp.com","connection":"close","accept":"*/*","content-type":"application/json; charset=UTF-8","cache-control":"no-cache","pragma":"no-cache","user-agent":"Java/1.8.0_112","x-request-id":"5a7a2c31-9ce5-4b02-9bac-bcef55ad6818","x-forwarded-for":"54.224.155.160","x-forwarded-proto":"https","x-forwarded-port":"443","via":"1.1 vegur","connect-time":"1","x-request-start":"1493578831899","total-route-time":"0","content-length":"573"}
2017-04-30T19:00:31.901347+00:00 app[web.1]: body: {"id":"5478dfb5-54f3-451d-b975-4f984d1ce3cb","timestamp":"2017-04-30T19:00:31.858Z","lang":"en","result":{"source":"agent","resolvedQuery":"44","speech":"","action":"check_guess","actionIncomplete":false,"parameters":{"check_guess":"44"},"contexts":[],"metadata":{"intentId":"c863e1e2-c850-45d8-9b96-b57e0b1ee77e","webhookUsed":"true","webhookForSlotFillingUsed":"false","intentName":"provide_guess"},"fulfillment":{"speech":"","messages":[{"type":0,"speech":""}]},"score":1},"status":{"code":200,"errorType":"success"},"sessionId":"ff2e0c97-552b-40d3-8f06-32e612476897"}
2017-04-30T19:00:31.903553+00:00 app[web.1]: postSwitch {"id":"sw1","state":"on","name":"Koko's Lamp"}
2017-04-30T19:00:31.907017+00:00 heroku[router]: at=info method=POST path="/API/switches/sw1?password=123456" host=myjsonparser.herokuapp.com request_id=5a7a2c31-9ce5-4b02-9bac-bcef55ad6818 fwd="54.224.155.160" dyno=web.1 connect=1ms service=5ms status=200 bytes=253 protocol=https
问题是 postSwitch{} 在这两种情况下都会发生。
这是 Google Actions 始终工作的方式吗，我只需要处理逻辑以便每次解析 json 并仅在找到 check_guess 时才做出反应？或者有没有办法控制 Google Actions API 发布的 webhook 帖子，以便仅在通过包含参数 check_guess 的值完全填充操作时发布它？
