如何在Sails js中使用外部rest api(nodejs MVC) [英] How to use external rest api in Sails js (nodejs MVC)

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问题描述

我使用sailsjs作为节点js的MVC,我还在学习它。
我设法从我自己的数据库中获取数据并使用它。

Im using sailsjs as a MVC for node js, i'm still learning it. I managed to get data from my own database and use it.

但现在我需要/想要从外部rest api获取数据。
我在我的控制器中使用了这个:

But now i need/want to get data from an external rest api. I used this in my controller:

// api/controllers/SomeController.js
test : function(res,req){
    var j;

    var https = require('https');

    var options = {
      hostname: 'testing.atlassian.net',
      port: 443,
      path: '/rest/api/2/search?jql=project=ABC',
      method: 'GET',
      headers: {'Authorization': 'Basic ' + 'SuperSecretLoginAndPassword'}
    };

    var req = https.request(options, function(res) {
      res.setEncoding('utf8');
      res.on('data', function(d) {

      });
     });

    req.end();
}

变量 d 正在显示正确的结果。
如何在我的视图中使用请求结果?
我搜索了很多,但我无法找到任何方法在我看来显示这个。

The variable d is displaying the right result. How can i use the request results in my view? I've searched a lot but i cant find any ways to display this in my view.

这是实时更新的吗?因此,如果de rest api中的内容发生变化,我将无需刷新。

And will this be realtime updated? So if something in de rest api changes I won't have to refresh.

对不起,如果这是愚蠢的话。

Sorry if this is something stupid.

推荐答案

基本上你会等待你的请求触发其回调,然后将获取的数据提供给 res.locals 。假设你正在获取JSON数据,你可以这样做:

Basically you'll want to wait for your request to fire its callback and then feed the fetched data into res.locals. Assuming you are fetching JSON data, you could do this:

// api/controllers/SomeController.js
test: function(req, res) {
  var https = require('https');

  ...

  https.request(options, function(response) {
    var responseData = '';
    response.setEncoding('utf8');

    response.on('data', function(chunk){
      responseData += chunk;
    });

    response.once('error', function(err){
      // Some error handling here, e.g.:
      res.serverError(err);
    });

    response.on('end', function(){
      try {
        // response available as `responseData` in `yourview`
        res.locals.requestData = JSON.parse(responseData);
      } catch (e) {
        sails.log.warn('Could not parse response from options.hostname: ' + e);
      }

      res.view('yourview');
    });
  }).end();

}

您提供的示例代码存在一些问题:


  • test:function(res,req)... 不要混淆控制器参数,第一个是_req_uest,第二个是_res_ponse。

  • test: function(res,req) ... Don't mixup the controller arguments, the first is _req_uest, the second one _res_ponse.

var req = https。请求... 您真的不想覆盖传递给控制器​​操作的 req 参数。使用其他名称。

var req = https.request ... You really do not want to override the req argument passed into your controller action. Use some other name.

https.request(options,function(res){...} 同样在这里。对于 https.request 回调范围,这样做会覆盖 res - 阻止你使用所有的东西(例如: res.view )由传递给控制器​​的 res 参数提供。

https.request(options, function(res) {...} Same here. Doing this overrides res for the https.request callback scope - preventing you from using all the goodies (e.g.: res.view) supplied by the res parameter passed to your controller.

我猜你有必要阅读闭包和回调:

I'd guess it would make sense for you to read up on closures and callbacks:

什么是闭包和回调?

这篇关于如何在Sails js中使用外部rest api(nodejs MVC)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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