const express = require("express");
const bodyParser = require("body-parser");
const request = require("request");
const app = express();
app.use(bodyParser.urlencoded({extended : true}));
app.listen(3000,function(){
console.log("server is running");
})
app.get("/",function(req,res){
res.sendFile(__dirname + "/index.html");
})
app.post("/",function(req,res){
var url = "https://cdn-api.co-vin.in/api/v2/appointment/sessions/public/calendarByPin?";
var pincode = req.body.pinCode;
url = url + "pincode=" + pincode;
var date = req.body.date;
url = url + "&date=" + date;
console.log(pincode,date);
request(url,function(err,res1,body){
res.send(body.centers);
})
})
for the above code (undefined) value is send in res.send(body.centers)
body is in json format given as below:
{"centers":[{"center_id":596215,"name":"MISSION UHC","address":"MISSION NADIAD","state_name":"Gujarat","district_name":"Kheda","block_name":"Nadiad","pincode":387002,"lat":22,"long":72,"from":"09:00:00","to":"18:00:00","fee_type":"Free"}
Try to see how body looks
request(url,function(err,res1,body) {
console.log(body);
})
If body output in terminal with double quote like :
{
"key": "value"
}
that's mean body is JSON string and you need to parsing it to object with :
body = JSON.parse(body)
Then send it :
res.send(body.centers)
Related
I'm trying to retrieve data from Keepa using express js and HTTP module,
Keepa sending all data as gzip.
I was challenged to get the data properly and I got a previous error-Unexpected token in JSON at position 0,
So I have installed 'decompress-response' module which resolved this issue but now I'm getting half of the JSON data and then a new syntax error appears - unexpected end of json input Node Js
I'm trying to figure what am I missing here.. hope you can help me.
const express = require("express");
const https = require("https");
const decompressResponse = require("decompress-response");
const bodyParser = require("body-parser");
const app = express();
app.use(bodyParser.urlencoded({extended: true}));
app.get("/", function(req, res){
res.sendFile(__dirname + "/index.html");
});
app.post("/", function(req, res){
console.log(req.body.asinId);
const query = req.body.asinId;
const apiKey = "MY_API_KEY";
const url = "https://api.keepa.com/product?key="+ apiKey +"&domain=1&asin="+ query;
https.get(url, function(response){
response = decompressResponse(response);
console.log(response.statusCode);
console.log(response.headers);
var data;
response.on("data", function(chunk) {
if (!data) {
data = chunk;
} else {
data += chunk;
}
const asinData = JSON.parse(data);
console.log(asinData);
res.send();
});
});
});
Please try to print the response before "response = decompressResponse(response);". And let me know what you get there.
When ran, I get an error saying:
undefined:1
[object Object]
^
SyntaxError: Unexpected token o in JSON at position 1
at JSON.parse ()
the code:
const express = require("express");
const app = express();
const https = require("https");
const bodyParser = require('body-parser')
app.use(bodyParser.urlencoded({extended: true}));
app.get("/",function (req,res) {
res.sendFile(__dirname + "/public/index.html")
app.use(express.static('public'));
})
app.post("/",function(req,res){
const firstName = req.body.firstName;
const lastName = req.body.lastName;
const email = req.body.email;
const data = {
members:{
email_address: email,
status:"subscribed",
merge_fields:{
FNAME:firstName,
LNAME:lastName
}
}
}
const jsonData = JSON.stringify(data);
const url = "https://us1.api.mailchimp.com/3.0/lists/";
const options = {
method:"POST",
auth:"sudolake:api_key"
}
const request = https.request(url, options, function(response){
response.on("data",function(){
console.log(JSON.parse(data));
})
})
request.write(jsonData);
request.end();
})
app.listen(3000, function(){
console.log("the server is up & running");
})
I know its probably something with the "const jsonData = JSON.stringify(data);" but I don't know what, its probably really stupid, thanks for any help
Trying to retrieve information of any Github profile with the help of this API:
Github API - https://api.github.com/users/{username of any Github account}
const express = require("express");
const app = express();
const https = require("https");
const bodyParser = require("body-parser");
const request = require("request");
app.listen(3000 , function(){
console.log("Server started at port 3000");
});
app.use(express.static("public"));
app.use(bodyParser.urlencoded({extended:true}));
app.get("/" , function(req , res){
res.sendFile(__dirname +"/index.html" );
});
app.post("/" , function(req , res){
const user = req.body.username;
const url = "https://api.github.com/users/"+user ;
https.get(url , function(response){
response.on("data", function(data){
const temp = JSON.parse(data);
const bravo = temp.login;
res.write("<p>The login of this Github ID is " + bravo + "<p>" );
});
});
console.log("Post request received.");
});
Getting error in my CLI stating user agent error and unexpected token R in JSON at position 2
The target of your requests won't return in json format if there is a space or other invalid character in the uri you call.
calling with "testme" as your bravo variable rendered json but "testme please" returned html.
I think if you log data before trying to parse it as json you will find you're being served html.
From javascript on the client side I send 3 variables per ajax post, and on the server I try to view the json content of the client and it shows me undefined, I do not know where the problem is, I attach the code (refactored):
file : ./routes/index.js
'use strict'
const express = require('express')
const user_controller = require('../controller/user')
const api = express.Router()
// pagina de Inicio
api.get('/index',function(req,res){
res.render('index')
})
// Gestion de usuarios
api.get('/usuarios',user_controller.getAllUsers)
api.post('/usuarios',user_controller.newUser)
api.get('/usuario',user_controller.getUser)
api.post('/logear',user_controller.logear)
api.post('/registrar',user_controller.registrar)
module.exports = api
file : ./controller/user.js
function registrar(req,res){
var bcrypt = require('bcrypt');
var BCRYPT_SALT_ROUNDS = 12;
var user = req.body.user;
var email = req.body.email;
var pass = req.body.pass;
console.log('info: ' + user + ' ' + email + ' ' +pass);
//console.log('perro: ' + req.body);
// encriptamos la contraseña
bcrypt.genSalt(10, function(err, salt) {
if(error) throw error;
else{
bcrypt.hash(pass, BCRYPT_SALT_ROUNDS, function(err, hash) {
pass = hash;
});
}
});
//bcrypt.hash(pass, BCRYPT_SALT_ROUNDS).then(function(hashedPassword) {pass = hashedPassword});
conexion_db.query({ ... etc
file: ./app.js
'use strict'
//configuracion del servidor
const express = require('express');
const bodyParser = require('body-parser');
const app = express();
app.use(bodyParser.urlencoded({extended:true}));
app.use(bodyParser.json());
app.set('view engine','jade');
app.set('views', __dirname + '/views');
app.use(express.static(__dirname + '/public'));
const api = require('./routes');
app.use('/api',api);
module.exports = app
file: client.js
$.ajax({
url: 'http://localhost:3000/api/registrar',
data: JSON.stringify({'user': $('#nick').val(),'email': $('#email').val(),'pass': $('#pass').val()}),
type: "POST",
dataType: 'json',
success: function(json) {
console.log("json: " + json.estado);
console.log("json: " + json.user);
console.log("json: " + json.pass);
I get on cmd server, this: info: undefined undefined undefined
The bodyParser middleware can not handle the json data because you have not set the ContentType.jQuery ajax default value of contentType parameter is "application/x-www-form-urlencoded; charset=UTF-8".But you are sending data in json type.You need to set ContentType to application/json.
You can also give PlainObject to the data parameter.
I want to start a proxy server with node.js so that it serves requests preprended with "/wps_proxy/wps_proxy?url=". I want it so I can use the wps-js library of north52 (check the installation tips) . I have already a server where I run my application.
What I did try until now is :
the server.js file
var express = require('express');
var bodyParser = require('body-parser');
var fs = require('fs');
var path = require("path");
var app = express();
app.use(express.static(__dirname + '/' + 'public'));
var urlencodedParser = bodyParser.urlencoded({ extended: false });
//****** this is my try ******************************
app.get('/wps_proxy/wps_proxy',function (req,res){
res.sendfile(__dirname + '/' + 'public/wps_proxy/wps-js/target/wps-js-0.1.2-SNAPSHOT/example.html');
if(req.query !== undefined){//because it enters sometimes without url
var http = require('http');
//Options to be used by request
var options = {
host:"geostatistics.demo.52north.org",//fixed given data
port:"80",
path:"/wps/WebProcessingService"
};
var callback = function(response){
var dat = "";
response.on("data",function(data){
dat+=data;
});
response.on("end", function(){
res.end(dat)
})
};
//Make the request
var req = http.request(options,callback);
req.end()
}
})
var ipaddress = process.env.OPENSHIFT_NODEJS_IP||'127.0.0.1';
var port = process.env.OPENSHIFT_NODEJS_PORT || 8080;
app.set('port', port);
app.listen(app.get('port'),ipaddress, function() {
console.log( 'Server started on port ' + app.get('port'))
})
//***************************************
but its not working.. I think that the data are not sent back correctly..
This is a live example of what I want to do.. http://geoprocessing.demo.52north.org/wps-js-0.1.1/
and this is a live example of my application (check the console for errors) http://gws-hydris.rhcloud.com/wps_proxy/wps_proxy
I did find my answer from this post How to create a simple http proxy in node.js? so the way i solve it was:
app.get('/wps_proxy/wps_proxy',function (req,res){
var queryData = url.parse(req.url, true).query;
if (queryData.url) {
request({
url: queryData.url
}).on('error', function(e) {
res.end(e);
}).pipe(res);
}
else {
res.end("no url found");
}
})