【原文】5 Ways to Make HTTP Requests in Node.js
HTTP模块，http或者https库 需要解析JSON格式
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| const https = require('https');
https.get('https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY', res => {
let data = '';
res.on('data', chunk => {
data += chunk;
})
res.on('end', () => {
console.log(1, JSON.parse(data))
})
}).on('error', err => {
console.log('Error：' + err.message);
})
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request库，如果使用promise可以调用request-promise库
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| const request = require('request');
request('https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY', {json: true}, (err, res, body) => {
if (err) {
return console.log(err)
}
console.log(2, body);
})
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request-promise库 request的promise操作
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| const requestPromise = require('request-promise');
requestPromise('https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY')
.then(res => {
console.log(3, res);
}).catch(err => {
console.log(err);
});
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axios
Axios是一个基于promise的HTTP客户端，可以用于浏览器和Node.js
axios库 默认情况下，Axios可以解析JSON响应
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| const axios = require('axios');
axios.get('https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY')
.then(res => {
console.log(4, res.data);
}).catch(err => {
console.log(err);
})
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axios库的all，发起并发请求
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| axios.all([
axios.get('https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY&date=2017-08-03'),
axios.get('https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY&date=2017-08-02'),
]).then(axios.spread((res1, res2) => {
console.log('res1', res1.data);
console.log('res2', res2.data);
})).catch(err => {
console.log(err);
})
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superAgent 默认解析JSON响应，能进行链式调用
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| const superagent = require('superagent');
superagent.get('https://api.nasa.gov/planetary/apod')
.query({api_key: 'DEMO_KEY', date: '2017-08-02'})
.end((err, res) => {
if (err) {
return console.log(err)
}
console.log(5, res.body);
})
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Got 类似于promise，比较轻量，不像request那样臃肿
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| const got = require('got');
got('https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY', {json: true})
.then(res => {
console.log(res.body);
}).catch(err => {
console.log(err.reponse.body);
});
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node-fetch库与window.fetch API保持一致
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| const fetch = require('node-fetch');
*plain text or html
fetch('https://github.com/')
.then(res => res.text())
.then(body => console.log(body));
*json
fetch('https://api.github.com/users/github')
.then(res => res.json())
.then(json => console.log(json));
*catch network error
fetch('http://domain.invalid/')
.catch(err => console.error(err));
*stream
fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png')
.then(res => {
return new Promise((resolve, reject) => {
const dest = fs.createWriteStream('./octocat.png');
res.body.pipe(dest);
res.body.on('error', err => {
reject(err);
});
dest.on('finish', () => {
resolve();
});
dest.on('error', err => {
reject(err);
});
});
});
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更多fetch的用法