我想知道如何使用HTTP请求或一些带有nodejs的lib来进行第二次请求(第一次访问外部URL)。下面是我如何通过PHP和cURL解决我的问题,我在哪里访问主网址,我采取会话(cookie)来发出第二个请求
$app->get('/parada/:termo', function ($termo) use ($app) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://olhovivo.sptrans.com.br/');
curl_setopt ($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
$store = curl_exec ($ch);
curl_setopt($ch, CURLOPT_URL, 'http://olhovivo.sptrans.com.br/v0/Parada/Buscar?termosBusca='.$termo);
$content = curl_exec ($ch);
echo $content;
curl_close ($ch);
});
我没有代码,因为我看到的所有示例都是http.get发出请求并关闭连接。
var http = require('http');
var options = {
host: 'example.com',
port: 80,
path: '/foo.html'
};
http.get(options, function(resp){
resp.on('data', function(chunk){
//new request??
});
}).on("error", function(e){
console.log("Got error: " + e.message);
});
我需要通过http.get导航,因为我需要捕获第一个网址的cookie才能验证第二个网址。使用PHP的cURL很简单,因为只需要关闭第一个连接来发出第二个请求(保留cookie)
我试图抓住第一个请求的cookie,然后我尝试在第二个请求中插入cookie第一个请求,但是没有运行
var http = require('http');
var options = {
host: 'www.olhovivo.sptrans.com.br',
port: 80
};
http.get(options, function(resp){
var teste = resp.headers;
teste = teste['set-cookie'][0].split('=');
var cok = 'apiCredentials-v0='+teste[1].replace('; path', '');
resp.on('data', function(chunk){
//new request??
var options2 = {
host: 'www.olhovivo.sptrans.com.br',
port: 80,
"set-cookie": cok,
path: '/v0/Parada/Buscar?termosBusca=Paulista'
};
http.get(options2, function(resp2){
resp2.on('data', function(chunk2){
//new request??
http.createServer(function (req, res) {
//set content header
res.writeHead(200, {
'content-type': 'application/json'
});
//write msg
res.end(chunk2);
}).listen(8080);
console.log('Server running 0n 8080');
});
}).on("error", function(e){
console.log("Got error: " + e.message);
});
});
}).on("error", function(e){
console.log("Got error: " + e.message);
});
答案 0 :(得分:2)
在以下示例中,我发出第一个请求以获取Cookie apiCredentials
。
我将此cookie添加到第二个请求的标头中。第二个请求从提供者返回正确的数据(一个不错的JSON答案)。
var http = require("http");
var initialRequestOptions = {
host : 'olhovivo.sptrans.com.br',
port : 80,
path : '/'
};
var secondRequestOptions = {
host : 'olhovivo.sptrans.com.br',
port : 80,
path : '/v0/Parada/Buscar?termosBusca=Morato',
headers : {
// This cookie will be replaced by the one received on the previous request
'Cookie' : 'apiCredentials=39D1DE24EB4A....'
}
};
var firstRequest = http.request(initialRequestOptions, function(response) {
var cookie = response.headers['set-cookie'];
if (cookie) {
cookie = (cookie + '').split(";")[0];
secondRequestOptions.headers['Cookie'] = cookie;
}
var body = '';
response.on('data', function(chunk) {
body += chunk;
});
response.on('end', function() {
var secondRequest = http.request(secondRequestOptions, function(responseNew) {
var dataBody = '';
responseNew.on('data', function(chunk) {
dataBody += chunk;
});
responseNew.on('end', function() {
console.log(dataBody);
});
});
secondRequest.on('error', function(e) {
console.log('problem with request: ' + e.message);
});
secondRequest.end();
});
});
firstRequest.on('error', function(e) {
console.log('problem with request: ' + e.message);
});
firstRequest.end();
答案 1 :(得分:1)
我建议使用request模块。
var request = require('request');
request('http://www.google.com', function (error, response, body) {
if (!error && response.statusCode == 200) {
console.log(body) // Show the HTML for the Google homepage.
}
})