想得到嵌套api调用的响应，然后发回我的中间件节点js api

Question

我想在嵌套的 api 调用中使用异步等待，但不知道怎么做？所以第二个 api 的响应发送回我从前端得到的 \api\sign_in 响应，这里有什么解决方案是我的代码： ....

app.post("/api/sign_in", (req, res) => {

          console.log("i am in login call");
          const resp = scaryClown(req.body.email, req.body.password);
          console.log("here you should wait for above response and then pass 
             this  response  into /api/sign_in response");
               res.send(resp);
 });

function scaryClown(email, password) {
request.post(
  key.sign_in_url,
  {
    json: {
      email: email,
      password: password
    }
  },
  function(error, response, body) {
    if (!error && response.statusCode == 200) {
      email = response.headers.uid;

      key.email = response.headers.uid;
      key.client = response.headers.client;
      var result = [];
      for (var i in response.headers) result.push(i, response.headers[i]);
      access_token = result[17];
      key.access_token = access_token;
      key.expiry = response.headers.expiry;

      apiresponse = response.body;
      console.log("apiresponse");
      console.log(apiresponse);
      return apiresponse;
    }

    console.log("==============");
    console.log(response.body);
    return response.body;
  }
);
}

....

Answer 1

要等待您的可怕小丑函数的响应，您可以在之前使用 await 你的函数调用。

app.post("/api/sign_in", async (req, res) => {

    console.log("i am in login call");
    const resp = await scaryClown(req.body.email, req.body.password);
    console.log("here you should wait for above response and then pass 
          this  response  into / api / sign_in response");
            res.send(resp);
});

function scaryClown(email, password) {
  return new Promise((resolve, reject) => {
    request.post(
        key.sign_in_url,
        {
            json: {
                email: email,
                password: password
            }
        },
        function (error, response, body) {
            if (!error && response.statusCode == 200) {
                email = response.headers.uid;

                key.email = response.headers.uid;
                key.client = response.headers.client;
                var result = [];
                for (var i in response.headers) result.push(i, response.headers[i]);
                access_token = result[17];
                key.access_token = access_token;
                key.expiry = response.headers.expiry;

                apiresponse = response.body;
                console.log("apiresponse");
                console.log(apiresponse);
                resolve(apiresponse);
            }

            console.log("==============");
            console.log(response.body);
            resolve(response.body);
        }
    );
  });
}