本文实例讲述了nodejs实现的http、https 请求封装操作。分享给大家供大家参考，具体如下：
libs/request.js
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const url = require('url');
const zlib = require('zlib');
const http = require('http');
const https = require('https');
const qs = require('querystring');
function request(cookie) {
this.cookies = [];
if (cookie !== undefined) {
this.setcookie(cookie);
}
}
request.prototype.getheaders = function(host, postdata) {
let headers = {
'host': host,
'pragma': 'no-cache',
'connection': 'keep-alive',
'cache-control': 'no-cache',
'content-type': 'application/x-www-form-urlencoded',
'accept-language': 'zh-cn,zh;q=0.8,en;q=0.6,zh-tw;q=0.4,es;q=0.2',
'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
'user-agent': 'mozilla/5.0 (iphone; cpu iphone os 9_1 like mac os x) applewebkit/601.1.46 (khtml, like gecko) version/9.0 mobile/13b143 safari/601.1',
};
if (this.cookies.length) {
headers.cookie = this.cookies.join('; ');
}
if (postdata != '') {
headers['content-length'] = buffer.bytelength(postdata);
}
return headers;
}
request.prototype.setcookie = function(cookie) {
let cookies = cookie.split(';');
for (let c of cookies) {
c = c.replace(/^\s/, '');
this.cookies.push(c);
}
return this;
}
request.prototype.request = function(method, url, params) {
let postdata = qs.stringify(params || {});
let urlobj = url.parse(url);
let protocol = urlobj.protocol;
let options = {
hostname: urlobj.host,
port: urlobj.port,
path: urlobj.path,
method: method,
headers: this.getheaders(urlobj.host, postdata),
};
return new promise((resolve, reject) => {
let req = (protocol == 'http:' ? http : https).request(options, (res) => {
let chunks = [];
res.on('data', (data) => {
chunks.push(data);
});
res.on('end', () => {
let buffer = buffer.concat(chunks);
let encoding = res.headers['content-encoding'];
if (encoding == 'gzip') {
zlib.gunzip(buffer, function(err, decoded) {
resolve(decoded.tostring());
});
} else if (encoding == 'deflate') {
zlib.inflate(buffer, function(err, decoded) {
resolve(decoded.tostring());
});
} else {
resolve(buffer.tostring());
}
});
});
req.on('error', (e) => {
reject(e);
});
if (postdata != '') {
req.write(postdata);
}
req.end();
})
}
request.prototype.get = function(url) {
return this.request('get', url, null);
}
request.prototype.post = function(url, params) {
return this.request('post', url, params);
}
module.exports = function(cookie) {
return new request(cookie);
}
test.js
const request = require('./request')();
(async function() {
let res = await request.get('http://www.axita.com.cn/');
console.log(res);
})();
执行命令
nodemon test.js
希望本文所述对大家node.js程序设计有所帮助。
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