Node.js处理来自HTTP请求的响应

Question

I have some code as follows:

exports.post = function(request, response) {

  var httpRequest = require('request');
  var uri = "url..";

  httpRequest(uri, function(err, responseHeaders, bodyResponse) {
    var data = JSON.parse(bodyResponse); 
  });

}

I want to use the data outside the httprequest, but inside the exports.post function. In all the examples I have seen, everyone uses the body for logging, but I want to use the data.

Answer 1

If you want to join requests data, you could use Promises in this case:

function joinData() {
    var httpRequest = require('request');
    var url1 = 'http://echo.jsontest.com/request/first';
    var url2 = 'http://echo.jsontest.com/request/second';

    var promisedRequest = function (uri) {
        return new Promise(function (resolve, reject) {
            httpRequest(uri, function (err, responseHeaders, bodyResponse) {
                var data = JSON.parse(bodyResponse);
                resolve(data);
            });
        });
    }

    // both requests at the same time
    Promise.all([promisedRequest(url1), promisedRequest(url2)])
        .then(function (responsesArray) {
            console.log(responsesArray);        // <- your responses here
        });
}