耗时JSON API通过TVJS,tvOS电话 [英] consuming API JSon calls through TVJS-tvOS

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本文介绍了耗时JSON API通过TVJS,tvOS电话的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我试图用tvOS玩,我有一个关于处理JSON调用的小问题。我通过一个API来获得一些数据,让我们说的测试我打电话这个链接的缘故

<$p$p><$c$c>http://query.yahooapis.com/v1/public/yql?q=select%20item%20from%20weather.forecast%20where%20location%3D%223015%22&format=json

我试图用这个功能进行一些修改

 函数getDocument(URL){
  VAR templateXHR =新XMLHtt prequest();
  templateXHR.responseType =JSON;
  templateXHR.open(GET,网址,真实);
  templateXHR.send();
  返回templateXHR;
}

但没有成功。任何提示或帮助?

如果我需要使用的NodeJS,我该怎么办呢?


解决方案

这是一个我的工作。它在许多方面并不理想,但显示你的东西开始使用。

 函数jsonRequest(选项){  VAR URL = options.url;
  VaR方法= options.method || '得到';
  VAR标题= options.headers || {};
  VAR体= options.body || '';
  VAR回调= options.callback ||功能(ERR,数据){
    console.error(options.callback失踪了这个请求);
  };  如果(!URL){
    扔使用loadURL需要url参数';
  }  VAR XHR =新XMLHtt prequest();
  xhr.responseType ='JSON';
  xhr.onreadystatechange =功能(){
    尝试{
      如果(xhr.readyState === 4){
        如果(xhr.status === 200){
          回调(NULL,JSON.parse(xhr.responseText));
        }其他{
          回调(新错误(错误[+ xhr.status +]制作的http请求:+网址));
        }
      }
    }赶上(ERR){
      console.error('中止请求'+ URL +'。错误:'+ ERR);
      xhr.abort();
      回调(新错误(错误作出要求:+网址+错误:+ ERR));
    }
  };  xhr.open(方法,URL,真正的);  Object.keys(头).forEach(功能(键){
    xhr.setRequestHeader(键,标题[关键]);
  });  xhr.send();  返回XHR;
}

你还可以用下面的例子调用它:

  jsonRequest({
  网址:'https://api.github.com/users/staxmanade/repos',
  回调:函数(ERR,数据){
    的console.log(JSON.stringify(数据[0],NULL,''));
  }
});

希望这有助于。

I am trying to play with tvOS, and I have small question regarding handling json call. I have to get some data through an API, let's say for sake of test that I am calling this link

http://query.yahooapis.com/v1/public/yql?q=select%20item%20from%20weather.forecast%20where%20location%3D%223015%22&format=json

I tried to use this function with some modification

function getDocument(url) {
  var templateXHR = new XMLHttpRequest();
  templateXHR.responseType = "json";
  templateXHR.open("GET", url, true);
  templateXHR.send();
  return templateXHR;
}

but didn't work out. Any hints or help ?

If I need to use NodeJS, how can I do that ?

解决方案

This is one that I got working. It's not ideal in many respects, but shows you something to get started with.

function jsonRequest(options) {

  var url = options.url;
  var method = options.method || 'GET';
  var headers = options.headers || {} ;
  var body = options.body || '';
  var callback = options.callback || function(err, data) {
    console.error("options.callback was missing for this request");
  };

  if (!url) {
    throw 'loadURL requires a url argument';
  }

  var xhr = new XMLHttpRequest();
  xhr.responseType = 'json';
  xhr.onreadystatechange = function() {
    try {
      if (xhr.readyState === 4) {
        if (xhr.status === 200) {
          callback(null, JSON.parse(xhr.responseText));
        } else {
          callback(new Error("Error [" + xhr.status + "] making http request: " + url));
        }
      }
    } catch (err) {
      console.error('Aborting request ' + url + '. Error: ' + err);
      xhr.abort();
      callback(new Error("Error making request to: " + url + " error: " + err));
    }
  };

  xhr.open(method, url, true);

  Object.keys(headers).forEach(function(key) {
    xhr.setRequestHeader(key, headers[key]);
  });

  xhr.send();

  return xhr;
}

And you can call it with the following example:

jsonRequest({
  url: 'https://api.github.com/users/staxmanade/repos',
  callback: function(err, data) {
    console.log(JSON.stringify(data[0], null, ' '));
  }
});

Hope this helps.

这篇关于耗时JSON API通过TVJS,tvOS电话的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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