Warning: file_get_contents(/data/phpspider/zhask/data//catemap/2/node.js/39.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181

Warning: file_get_contents(/data/phpspider/zhask/data//catemap/3/reactjs/23.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Node.js 拆分Goole播放结果_Node.js_Reactjs - Fatal编程技术网

Node.js 拆分Goole播放结果

Node.js 拆分Goole播放结果,node.js,reactjs,Node.js,Reactjs,我有一个React前端和一个节点后端,我所要做的就是使用Facundo Olano的从Google Play商店中获取一些数据 这是我的前端 import React, {Component} from 'react'; import './App.css'; export default class App extends Component { state = { title: '', review: '' }; component

我有一个React前端和一个节点后端,我所要做的就是使用Facundo Olano的从Google Play商店中获取一些数据

这是我的前端

import React, {Component} from 'react';
import './App.css';

export default class App extends Component {
    state = {
        title: '',
        review: ''
    };

    componentDidMount() {
        this.callApi()
            .then(res => this.setState({
                title: res.title,
                review: res.review
            }))
            .catch(err => console.log('Error: ', err));
    }

    callApi = async () => {
        const response = await fetch('/gPlay');
        const body = await response.json();

        if (response.status !== 200) {
            throw Error(body.message);
        }

        return body;
    };

    render() {
        console.log("==================== app log ====================");
        console.log("State: ", this.state);
        return (
            <div className="App">

                <p>Title: {this.state.title}.</p>
                <p>Review: {this.state.review}.</p>

            </div>
        );
    }
}
这是我得到的结果的一小部分

{
price: 6.99,
free: false,
currency: 'USD',
priceText: '$6.99',
offersIAP: true,
size: 'Varies with device'
}
我根据文档得到了完整的结果,但我需要能够将返回的对象拆分,以便能够将其中的一部分发送回前端,但我一生都无法让它工作

我想我可以简单地做一些事情,比如
gplaydresults.price
,并返回6.99,但返回的都是未定义的

请有人帮忙,我一定是错过了什么,因为这肯定不会那么难

谢谢xxx

好的,我算出来了!:)

对于任何感兴趣的人,
gPlayResults
被分配了一个
Promise
,而不是我期望的对象

我使用
进行了一次回调。然后
就可以使用我需要的结果将一个可用对象发送回前端

const express = require('express');
const app = express();
const port = process.env.PORT || 5000;

const googlePlayApp = require('google-play-scraper');
const appToScrape = 'com.mojang.minecraftpe';

app.get('/gPlay', (req, res) => {
    console.log('==================== /gPlay ====================');
    const gPlayResults = googlePlayApp.app({appId: appToScrape});

    gPlayResults.then(function(result) {
        res.send({
            appObject: result
        })
    });
});

app.listen(port, () => console.log(`Listening on port: ${port}`));
关于下一个问题

const express = require('express');
const app = express();
const port = process.env.PORT || 5000;

const googlePlayApp = require('google-play-scraper');
const appToScrape = 'com.mojang.minecraftpe';

app.get('/gPlay', (req, res) => {
    console.log('==================== /gPlay ====================');
    const gPlayResults = googlePlayApp.app({appId: appToScrape});

    gPlayResults.then(function(result) {
        res.send({
            appObject: result
        })
    });
});

app.listen(port, () => console.log(`Listening on port: ${port}`));