Question

我将如何在另一个http.request的响应中链接一个http.request，然后将它们推入数组，然后再进入前端？

router.get("/:team", (req, res) => {


  let teamParams = teams[req.params.team];
  twitter.get("search/tweets", teamParams, (err, data, resp) => {
    let tweetArr = [];
    let text = data.statuses;
    text.map((dat) => {
      let im = dat.entities.urls[0].url
      dat.links = im;
      tweetArr.push(dat);
    });
  

   res.json({ message: "Success", tweets: tweetArr });
  });
});

当前，我通过它获取数据对象循环，并添加一个url作为属性。现在，我想在使用res.json之前，链接另一个http请求以对另一个API进行API调用并获得响应。我已经尝试过使用Promise的解决方法，但是我永远无法返回带有第二个api调用响应的完整对象。

到目前为止，这是我已经设法达到的目的，我的对象包含来自第二个链接的请求。如何将所有tweet返回到最终可以解析的数组中？

require("dotenv").config();
const Twitter = require("twitter");
const API_IMAGE_PREV = "http://api.linkpreview.net/";
const request = require("request");
const key = process.env.IM_PREV_KEY;

let twitter = new Twitter({
  consumer_key: process.env.TWITTER_CONSUMER_KEY,
  consumer_secret: process.env.TWITTER_CONSUMER_SECRET,
  bearer_token: process.env.TWITTER_BEARER_TOKEN
});
let teamParams = {
  q: "from:ManUtdMEN MUFC",
  count: 2,
  result_type: "recent"
};


var third = function thirdUrl(next) {
  var promise = new Promise(function(resolve, reject) {
    next.forEach(x => {
      let ln = x.links;
      const options = {
        url: "http://api.linkpreview.net/?key=" + key + "&q=" + ln,
        method: "get"
      };
      request.get(options, (err, req, res) => {
        if (err) {
          console.log(err);
        } else {
          x.desc = res;
        }
      });
    });
  });
};

var second = function secondUrl(previous) {
  var promise = new Promise(function(resolve, reject) {
    let p = previous.statuses;
    let links = [];
    p.forEach(t => {
      let l = t.entities.urls[0].url;
      t.links = l;
    });

    resolve(p);
  });
  return promise;
};

twitter
  .get("search/tweets", teamParams)
  .then(second)
  .then(third)
  .catch(function(error) {
    throw error;
  });

Answer 1

您用于http请求的模块是什么？这是axios的示例。

const axios = require('axios');

router.get("/:team", (req, res) => {
  let teamParams = teams[req.params.team];
  twitter.get("search/tweets", teamParams, async (err, data, resp) => {
    let tweetArr = [];
    let text = data.statuses;
    text.map((dat) => {
      let im = dat.entities.urls[0].url
      dat.links = im;
      tweetArr.push(dat);
    });
    let res = await Promise.all(tweetArr.map(dat => axios.get(dat.links));
    res.json({ message: "Success", tweets: res });
  });
})

ASYNC / AWAIT用于链接多个http.requests

1 个答案: