zoukankan      html  css  js  c++  java
  • Node.js modules you should know about: request

    Hey everyone! This is the fourth post in my new node.js modules you should know about article series.

    The first post was about dnode - the freestyle rpc library for node, the second was about optimist - the lightweight options parser for node, the third was about lazy - lazy lists for node.

    This time I'll introduce you to a very awesome module called request by Mikeal Rogers. Request is the swiss army knife of HTTP streaming.

    Check this out:

    var fs = require('fs')
    var request = require('request');
    
    request('http://google.com/doodle.png').pipe(fs.createWriteStream('doodle.png'))

    Pow! You just streamed the response of HTTP request to http://google.com/doodle.png into doodle.png local file!

    Here is more awesome stuff:

    var fs = require('fs')
    var request = require('request');
    
    fs.readStream('file.json').pipe(request.put('http://mysite.com/obj.json'))

    Pow! It streamed your local file file.json to http://mysite.com/obj.json as HTTP PUT request!

    var request = require('request');
    
    request.get('http://google.com/img.png').pipe(request.put('http://mysite.com/img.png'))

    Pow! This just streamed a HTTP GET from http://google.com/img.png to HTTP PUT to http://mysite.com/img.png.

    At Browserling we use this module for streaming data to and from couchdb. Here is an example that saves a JSON document at mikeal's test couchdb:

    var request = require('request')
    var rand = Math.floor(Math.random()*100000000).toString()
    
    request({
      method: 'PUT',
      uri: 'http://mikeal.iriscouch.com/testjs/' + rand,
      multipart: [
        {
          'content-type': 'application/json',
          'body': JSON.stringify({
            foo: 'bar',
            _attachments: {
              'message.txt': {
                follows: true,
                length: 18,
                'content_type': 'text/plain'
               }
             }
           })
        },
        { body: 'I am an attachment' }
      ] 
    }, function (error, response, body) {
      if(response.statusCode == 201){
        console.log('document saved as: http://mikeal.iriscouch.com/testjs/'+ rand);
      } else {
        console.log('error: '+ response.statusCode);
        console.log(body);
      }
    })

    Install it via npm, as always:

    npm install request
    

    Sponsor this blog series!

    Doing a node.js company and want your ad to appear in the series? The ad will go out to 14,000 rss subscribers, 7,000 email subscribers, and it will get viewed by thousands of my blog visitors! Email me and we'll set it up!

    See ya!

    If you love these articles, subscribe to my blog for more, follow me on Twitter to find about my adventures, and watch me produce code on GitHub!

    source : http://www.catonmat.net/blog/nodejs-modules-request/

  • 相关阅读:
    解决 react-native 嵌套路由 warning
    在 function component 中设置 navigationOptions
    《客户端存储技术》阅读笔记
    表单实现原理(Vue ElementUI)
    MVVM 响应式原理(Vue)
    react 实现 loading 动效圈,支持配置转一圈的 duration
    CSS 数字设置等宽
    JSONP(Json with padding)
    javascript this对象
    css盒子模型
  • 原文地址:https://www.cnblogs.com/feichan/p/Nodejs.html
Copyright © 2011-2022 走看看