CodeGuru CodeGuru - 6 months ago 79
JSON Question

Nodejs Http Post Json Data

How do i properly send JSON data over Http Post on Nodejs? I have checked that the data i'm sending is definitely json but everytime i try sending over http post, it would receive an error. I cant exactly see the error as it's returning from terminal and even if i output, it's too messy, not properly formatted

var options = {
hostname: 'www.postcatcher.in',
port: 80,
path: '/catchers/5531b7faacde130300002495',
method: 'POST',
headers: {
'Content-Type': 'application/json',
}
};
var req = http.request(options, function(res) {
console.log('Status: ' + res.statusCode);
console.log('Headers: ' + JSON.stringify(res.headers));
res.setEncoding('utf8');
res.on('data', function (body) {
console.log('Body: ' + body);
fs.writeFile("/var/www/node/test.txt", body, function(err) {
if(err) {
return console.log(err);
}
console.log("The file was saved!");
});
});
});
req.on('error', function(e) {
console.log('problem with request: ' + e.message);
});
// write data to request body
req.write('{"string": result}'); ///RESULT HERE IS A JSON
req.end();


Also tried this

// request.post(
// '',
// { form: { key: result } },
// function (error, response, body) {
// if (!error && response.statusCode == 200) {
// console.log(body);
// }
// }
// );
// console.log(result);

Answer

result is not being interpolated.

this seems to work correctly..

http = require('http');
fs = require('fs');

var options = {
    hostname: 'www.postcatcher.in',
      port: 80,
      path: '/catchers/5531b7faacde130300002495',
      method: 'POST',
      headers: {
              'Content-Type': 'application/json',
          }
        };
var req = http.request(options, function(res) {
  console.log('Status: ' + res.statusCode);
  console.log('Headers: ' + JSON.stringify(res.headers));
  res.setEncoding('utf8');
  res.on('data', function (body) {
    console.log('Body: ' + body);
    fs.writeFile("test.txt", body, function(err) {
    if(err) {
        return console.log(err);
    }
              console.log("The file was saved!");
    }); 
  });
});
req.on('error', function(e) {
  console.log('problem with request: ' + e.message);
});
// write data to request body
// req.write('{"string": result}');  ///RESULT HERE IS A JSON

result = '{ "hello": "json" }';
req.write('{"string": '+result+'}');

req.end();

result:

$ node 29712051.js 
Status: 201
Headers: {"server":"Cowboy","date":"Sat, 18 Apr 2015 04:23:52 GMT","connection":"keep-alive","x-powered-by":"Express","content-type":"text/plain","content-length":"7","set-cookie":["connect.sid=0eGSTYI2RWf5ZTkpDZ0IumOD.OrcIJ53vFcOiQSdEbWz0ETQ9n50JBnXyZRjrSyFIdwE; path=/; expires=Sat, 18 Apr 2015 08:23:53 GMT; httpOnly"],"x-response-time":"6ms","via":"1.1 vegur"}
Body: Created
The file was saved!
$ cat test.txt
Created