在Meteor上安装/使用Phantom.js [英] Installing/Using Phantom.js with Meteor

问题描述

我目前正在努力将Phantom.js与我的Meteor应用程序结合使用.我已经将其安装在本地计算机(Ubuntu 14.04)上，将其添加到我的路径中(可以从终端运行它)，还运行并安装了Phantomjs的智能包装器:mrt add phantomjs.

I'm currently struggling with using Phantom.js with a Meteor app of mine. I have it installed on my local machine (Ubuntu 14.04), it's added to my path (I can run it from my terminal), I also ran and installed the smart wrapper for Phantomjs: mrt add phantomjs.

我可以看到在我的.meteor > local > build > programs > server > npm目录中有一个phantomjs目录.

I can see that in my .meteor > local > build > programs > server > npm directory there is a phantomjs directory.

我的问题是，我该如何实际使用幻影?我正在尝试从服务器端抓取信息.我已经尝试了以下操作(使用coffeescript): phantom = Npm.require "phantomjs" phantom = Npm.require "phantom" phantom = Meteor.require "phantomjs" phantom = Meteor.require "phantom"

My question is, how do I actually use Phantom? I'm attempting to scrape from the server side of things. I've tried the following things (using coffeescript): phantom = Npm.require "phantomjs" phantom = Npm.require "phantom" phantom = Meteor.require "phantomjs" phantom = Meteor.require "phantom"

(我也尝试使用大写的"P's")

(I've also tried using capital "P's")

以这种方式进行的所有尝试都会产生:Error: Cannot find module 'phantomjs'

All attempts in this way yield: Error: Cannot find module 'phantomjs'

任何澄清将不胜感激！

推荐答案

现在，流星开箱即用地支持npm软件包:

now meteor is supporting npm packages out of the box: https://guide.meteor.com/using-npm-packages.html#installing-npm

这是Meteor> 1.0.0的过程

Here is the procedure for Meteor > 1.0.0

添加npm软件包

meteor add meteorhacks:npm

运行流星，让npm包预先初始化

Run meteor to let the npm package to pre-initialise

meteor

已经在根目录下创建了一个packages.json文件.修改为:

A file packages.json has been created at the root. Edit it to:

{
  "phantomjs": "1.9.13"
}

要在服务器端代码中使用幻像:

To use phantom into your server side code:

var phantomJS = Meteor.npmRequire("phantomjs");

奖金:使用示例(感谢Ben Green)，将其放在代码中的任意位置:

Bonus: an example of usage (thanks Ben Green), put anywhere in your code:

if (Meteor.isServer) {
    Meteor.startup(function () {
        var phantomjs = Meteor.npmRequire('phantomjs');

        var spawn = Meteor.npmRequire('child_process').spawn;
        Meteor.methods({
            runTest: function (options) {
                command = spawn(phantomjs.path, ['assets/app/phantomDriver.js']);
                command.stdout.on('data', function (data) {
                    console.log('stdout: ' + data);
                });
                command.stderr.on('data', function (data) {
                    console.log('stderr: ' + data);
                });
                command.on('exit', function (code) {
                    console.log('child process exited with code ' + code);
                });
            }
        });

        Meteor.call("runTest");// run the test as soon as meteor server starts
    });
}

创建phantomjs脚本文件./private/phantomDriver.js并将其编辑为

Create the phantomjs script file ./private/phantomDriver.js and edit it to

var page = require('webpage').create();
page.open('http://github.com/', function (){
    console.log('Page Loaded');
    page.render('github.png');
    phantom.exit();
});

这篇关于在Meteor上安装/使用Phantom.js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！