node.js restler调用的多个响应 [英] Multiple responses on node.js restler call

问题描述

我已经创建了一个用于发送REST请求的库：

I've created a library for sending REST requests:

var rest = require('restler');
module.exports = {
  beginSession: function()
  {
    var options = {
        method: "GET",
        query: {begin_session: '1'}};
    rest.get('http://countly/i', options).
        on('complete', function(data, response){
            console.log('Status: ' + response.statusCode);
        });
  }
};

问题在于，每次我使用图书馆并且电话都被响应时，'on complete'多次调用：第一次使用方法只会调用'on complete'一次，第二次使用方法会调用'on complete'两次等等......

The problem is that every time I use the library and the call is responded, the 'on complete' is called multiple times: 1st use of method will call 'on complete' just once, 2nd use of method will call 'on complete' twice and so on....

我做错了什么？

谢谢
Jose

Thanks Jose

推荐答案

我也在努力解决这个问题。但没有在互联网上找到答案。我终于明白了。这是因为每次调用你的rest.get（）时都会注册的完整事件。

I was struggling with this one as well. but didn't find an answer on the internet. I finally figure it out though. It was caused by the 'complete' event being registered every time the your rest.get() is called.

我的解决方案是使用.once（）而不是.on（）。例如：

My solution is to use .once() instead of .on(). For example:

var rest = require('restler');
rest.get('url_to_fetch').once('complete', function(rtn, rsp){
     ....blah blah....
});
// refer here http://nodejs.org/api/events.html#events_emitter_once_event_listener

希望这会有所帮助。

这篇关于node.js restler调用的多个响应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！