Question

所以，我在使用nodejs与API通信时遇到问题。我已经尝试了一半，从使用提供的不同的请求模块到改变格式和其他所有的一半。

代码在这里......

var request = require("request"); 
var prompt = require('prompt');
var $ = require('jquery');
var jsdom = require('jsdom');

var y = [];
var z = [];
var ids = [];

var x = "";
var pTL = "";
var vTL = "";
var url = "";

function requestN(name){
  //does things regarding name.
  url = https://example.com/ //Not actual domain. Is example.
  request(url, function (error, response, body) { //Grabs data from server
     if (!error && response.statusCode == 200) {
      x = body;
    }
    if (error || response.statusCode != 200 ){
      console.log('Network Error ' + response.statusCode + '. Program will exit shortly...');
    }
    prepareInput();
  });
}

function format(){

//There is a whole lot of things here that regard parsing strings and things like that. This isn't the issue; I checked.

for( var d1 = 0; d1 < ids.length; d1++){
if( d1 + 1 != false){ //Checks if undefined.
  var obj = { 
    "_label": "LABEL",
    "_inV": ids[d1],
    "_outV": ids[d1 + 1]
  }
  sendTo(obj);
}
  }
};

function sendTo(obj){
  jsdom.env("", ["http://code.jquery.com/jquery.min.js"], function(err, window) {
      var $ = window.$
      $.support.cors = true;
      $.ajax({
        url: url,
        data: JSON.stringify(obj),
        processData: false,
        contentType: "application/json",
        type: 'POST',
        error: function(e) {
          console.log(e.status); //Always returns a code of '0', for some reason.
          console.log(JSON.stringify(obj)) //debug
        },
        success: function(objString){ //Success never triggers, for some reason.
          console.log('Potato'); //debug
          console.log(objString);
        }
      });
  });

/* This was also tried; The API kept throwing error 500 at me.
var mOptions = {
    url: url,
    data: JSON.stringify(obj),
    processData: false,
    contentType: "application/json",
    type: "POST"
  }
  request.post(mOptions, function(error, response, body){
      console.log(response);
  });
*/
}

prompt.start(); //Asks for your input
console.log('Please enter property and value to link, and the page to link it to.');
prompt.get(['name', 'property', 'val'], function(err, result){
  pTL = result.property;
  vTL = result.val;
  var name = result.name;
  requestN(name);
});

我的智慧结束了。两个不同的人不知道这里发生了什么，并且API在另一台计算机上完美运行（也使用完全相同的Ajax请求格式。） e返回：

{ readyState: 0,
  getResponseHeader: [Function],
  getAllResponseHeaders: [Function],
  setRequestHeader: [Function],
  overrideMimeType: [Function],
  statusCode: [Function],
  abort: [Function],
  state: [Function],
  always: [Function],
  then: [Function],
  promise: [Function],
  pipe: [Function],
  done: [Function],
  fail: [Function],
  progress: [Function],
  complete: [Function],
  success: [Function],
  error: [Function],
  responseText: '',
  status: 0,
  statusText: 'error' }

节点版本v4.2.6

Answer 1

尝试使用 dataType 字段将数据格式化为json。

以下是我用来获取（OAUTH2）令牌的示例：

function doRequestDataWithUserPass(){
    var userId="a@b.com"; 
    var pass="aaa"; 
    var formUserPass = { client_id: clientId, 
    client_secret: clientSecret, 
    username: userId, 
    password: pass, 
    scope: 'read_station', 
    grant_type: 'password' };
    $.ajax({
     async: false,
    url: "https://example.net/oauth2/token",
      type: "POST",
      dataType: "json",
      data: formUserPass,
      success: onSuccess
    });
}

function onSuccess(data){
// debug
}

Answer 2

好。

所以，这不是服务器问题。我已经弄明白了，而且有点模糊。注意：这适用于使用npm请求模块发送json对象的其他nodejs服务器。

var mOptions = {
    url: url,
    data: JSON.stringify(obj),
    processData: false,
    contentType: "application/json",
    type: "POST"
  }
  request.post(mOptions, function(error, response, body){
      console.log(response);
  });

上面的代码，不起作用。但是，稍作修正，

var mOptions = {
    url: url,
    json: obj,
    processData: false,
    contentType: "application/json",
    type: "POST"
  }
  request.post(mOptions, function(error, response, body){
      console.log(response);
  });

确实如此。我不确定为什么这会产生如此大的差别，无论是服务器还是模块的东西，但这就是它的作用。当当。谢谢你的帮助。

Nodejs POST请求不起作用;没有显示真正的错误代码

2 个答案: