javascript - 如何使用 Javascript 更改 API 响应

Question

我编写了这个小应用程序，它接收一组星球大战角色并以数组的形式返回图像。

const app = require('express')(); 
const fetch = require('node-fetch');
const imageSearch = require('image-search-google');
const bodyParser = require('body-parser')

var urlencodedParser = bodyParser.urlencoded({ extended: true })
app.use(bodyParser.json())


const options = {page:1};


const getImages = (keywords) =>
 Promise.all(keywords.map(keyword => client.search(`${keyword} Wookieepedia`, options)))
 .then(data => firstResult = data.map(result => result[0].url)); 


 const fun = async () => {
     const res = await getImages(['yoda' , 'luke skywalker' , 'darth vader']);
     console.log(res);
 }

 fun()

上述代码的结果如下所示：

[ 'https://vignette.wikia.nocookie.net/starwars/images/d/d6/Yoda_SWSB.png/revision/latest?cb=20150206140125',
  'https://vignette.wikia.nocookie.net/starwars/images/d/d9/Luke-rotjpromo.jpg/revision/latest?cb=20091030151422',
  'https://vignette.wikia.nocookie.net/starwars/images/a/a3/ANOVOS_Darth_Vader_1.png/revision/latest?cb=20150128225029' ]

但我想要一个结果，我可以知道哪个图像属于哪个关键字。也许是这样的格式或类似的格式：

[{<keyword> : <url>}]

我试过这个：

const getImages = (keywords) =>
 Promise.all(keywords.map(keyword => {return { [keyword] : [client.search(`${keyword} Wookieepedia`, options)]}    } ))
 .then(data => firstResult = data.map(result => result)); 


 const fun = async () => {
     const res = await getImages(['yoda' , 'luke skywalker' , 'darth vader']);
     console.log(res);
 }

 fun()

结果很接近但不好：

[ { yoda: [ [Promise] ] },
  { 'luke skywalker': [ [Promise] ] },
  { 'darth vader': [ [Promise] ] } ]

标签： javascriptpromise

Answer 1

client.search返回一个承诺。如果您使映射函数异步，则可以在映射函数中等待。

const getImages = (keywords) =>
    Promise.all(keywords.map(async keyword => {
        return {[keyword]: await client.search(`${keyword} Wookieepedia`, options)}
    }));