问题
I'm trying to make a HTTP POST request to the google QPX Express API [1] using nodejs and request [2].
My code looks as follows:
// create http request client to consume the QPX API
var request = require("request")
// JSON to be passed to the QPX Express API
var requestData = {
"request": {
"slice": [
{
"origin": "ZRH",
"destination": "DUS",
"date": "2014-12-02"
}
],
"passengers": {
"adultCount": 1,
"infantInLapCount": 0,
"infantInSeatCount": 0,
"childCount": 0,
"seniorCount": 0
},
"solutions": 2,
"refundable": false
}
}
// QPX REST API URL (I censored my api key)
url = "https://www.googleapis.com/qpxExpress/v1/trips/search?key=myApiKey"
// fire request
request({
url: url,
json: true,
multipart: {
chunked: false,
data: [
{
'content-type': 'application/json',
body: requestData
}
]
}
}, function (error, response, body) {
if (!error && response.statusCode === 200) {
console.log(body)
}
else {
console.log("error: " + error)
console.log("response.statusCode: " + response.statusCode)
console.log("response.statusText: " + response.statusText)
}
})
What I'm trying to do is passing the JSON using the multipart argument [3]. But instead of the proper JSON response I got an error (400 undefined).
When I make a request using the same JSON and API Key using CURL instead, it works fine. So there's nothing wrong with my API key or JSON.
What's wrong with my code?
EDIT:
working CURL example:
i) I saved the JSON which I would pass to my request into a file called "request.json":
{
"request": {
"slice": [
{
"origin": "ZRH",
"destination": "DUS",
"date": "2014-12-02"
}
],
"passengers": {
"adultCount": 1,
"infantInLapCount": 0,
"infantInSeatCount": 0,
"childCount": 0,
"seniorCount": 0
},
"solutions": 20,
"refundable": false
}
}
ii) then, in the terminal I switched to the directory in which the newly created request.json file was located and run (myApiKey stands for my actual API Key obviously):
curl -d @request.json --header "Content-Type: application/json" https://www.googleapis.com/qpxExpress/v1/trips/search?key=myApiKey
[1] https://developers.google.com/qpx-express/ [2] a http request client designed for nodejs: https://www.npmjs.org/package/request [3] here is an example I found https://www.npmjs.org/package/request#multipart-related [4] QPX Express API is returning 400 parse error
回答1:
I think the following should work:
// fire request
request({
url: url,
method: "POST",
json: requestData
}, ...
In this case, the Content-type: application/json header is automatically added.
回答2:
I worked on this for too long. The answer that helped me was at: send Content-Type: application/json post with node.js
Which uses the following format:
request({
url: url,
method: "POST",
headers: {
"content-type": "application/json",
},
json: requestData
// body: JSON.stringify(requestData)
}, function (error, resp, body) { ...
回答3:
You don't want multipart, but a "plain" POST request (with Content-Type: application/json) instead. Here is all you need:
var request = require('request');
var requestData = {
request: {
slice: [
{
origin: "ZRH",
destination: "DUS",
date: "2014-12-02"
}
],
passengers: {
adultCount: 1,
infantInLapCount: 0,
infantInSeatCount: 0,
childCount: 0,
seniorCount: 0
},
solutions: 2,
refundable: false
}
};
request('https://www.googleapis.com/qpxExpress/v1/trips/search?key=myApiKey',
{ json: true, body: requestData },
function(err, res, body) {
// `body` is a js object if request was successful
});
回答4:
Now with new JavaScript version (ECMAScript 6 http://es6-features.org/#ClassDefinition) there is a better way to submit requests using nodejs and Promise request (http://www.wintellect.com/devcenter/nstieglitz/5-great-features-in-es6-harmony)
Using library: https://github.com/request/request-promise
npm install --save request
npm install --save request-promise
client:
//Sequential execution for node.js using ES6 ECMAScript
var rp = require('request-promise');
rp({
method: 'POST',
uri: 'http://localhost:3000/',
body: {
val1 : 1,
val2 : 2
},
json: true // Automatically stringifies the body to JSON
}).then(function (parsedBody) {
console.log(parsedBody);
// POST succeeded...
})
.catch(function (err) {
console.log(parsedBody);
// POST failed...
});
server:
var express = require('express')
, bodyParser = require('body-parser');
var app = express();
app.use(bodyParser.json());
app.post('/', function(request, response){
console.log(request.body); // your JSON
var jsonRequest = request.body;
var jsonResponse = {};
jsonResponse.result = jsonRequest.val1 + jsonRequest.val2;
response.send(jsonResponse);
});
app.listen(3000);
回答5:
According to doc: https://github.com/request/request
The example is:
multipart: {
chunked: false,
data: [
{
'content-type': 'application/json',
body: JSON.stringify({foo: 'bar', _attachments: {'message.txt': {follows: true, length: 18, 'content_type': 'text/plain' }}})
},
]
}
I think you send an object where a string is expected, replace
body: requestData
by
body: JSON.stringify(requestData)
回答6:
var request = require('request');
request({
url: "http://localhost:8001/xyz",
json: true,
headers: {
"content-type": "application/json",
},
body: JSON.stringify(requestData)
}, function(error, response, body) {
console.log(response);
});
回答7:
Example.
var request = require('request');
var url = "http://localhost:3000";
var requestData = {
...
}
var data = {
url: url,
json: true,
body: JSON.stringify(requestData)
}
request.post(data, function(error, httpResponse, body){
console.log(body);
});
As inserting json: true option,
sets body to JSON representation of value and adds "Content-type": "application/json" header. Additionally, parses the response body as JSON.
LINK
回答8:
I feel
var x = request.post({
uri: config.uri,
json: reqData
});
Defining like this will be the effective way of writing your code. And application/json should be automatically added. There is no need to specifically declare it.
来源：https://stackoverflow.com/questions/27190447/pass-json-to-http-post-request