Node / Express与Spooky / Casper js之间的通信 [英] communication between Node/Express and Spooky/Casper js

问题描述

我试图将node / express与spooky js结合起来。但是，我无法使用spookyjs发回我检索的元素。以下是我的代码使用我的代码，我只是打印了foo，尽管我打算让所有的DOM元素数据都是怪异的。我想知道有没有人有这样的经验呢？感谢提前！

server.js

  var express = （表现）; 
 var site = express.createServer（）; 
 var fill = require（'./ spooky_fill.js'）; 
 
 site.use（express.static（__ dirname +'/ ..'））; 
 
 site.get（/，function（req，res）{
 fs.createReadStream（./ index.html）。pipe（res）;}）; 
 
 site.get（'/ fill'，fill.search）; 
 
 site.listen（9201）; 
 
 console.log（服务器侦听http：// localhost：9201）; 
  

spooky_fill.js

  try {
 var Spooky = require（'spooky'）; 
} catch（e）{
 var Spooky = require（'../ lib / spooky'）; 
} 
 
 exports.search = function（req，res）{
 
 var spooky = new Spooky（{
 child：{
运输：'http'
}，
 casper：{
 logLevel：'debug'，
 verbose：true 
} 
}，function（err） {
 if（err）{
e = new Error（'无法初始化SpookyJS）; 
 e.details = err; 
 throw e; 
} 
 
 var js; 
 spooky.start（'https://www.google.com'）; 
 spooky.then（function（）{
 js = this。评估（function（）{
 return document; 
}）; 
 
}）; 
 res.write（js）; //没有任何东西从这里打印出来
 
 res.write（foo）; //这是打印出来的
 
 spooky.then（function（）{
 this.emit（'clog' ，'finished'）; 
}）; 
 
 spooky.run（）; 
}）; 
 
 spooky.on（'error'，function（e，stack）{
 console.error（e）; 
 
 if（stack）{
 console.log（stack）; 
} 
}）; 
 
 / * 
 //取消注释此块以查看Casper所说的所有事情。 
 //有很多。 
 //他有意见
 spooky.on（'console'，function（line）{
 console.log（line）; 
}）; 
 * / 
 
 spooky.on（'clog'，function（message）{
 console.log（message）; 
}）; 
 
 spooky.on（'log'，function（log）{
 if（log.space ==='remote'）{
 console.log（log.message。替换（/ \-。* /，''））; 
} 
}）; 
}; 
  

解决方案

我通过执行以下操作解决了问题：

  spooky.then（function（）{
 this.emit（'page.loaded'，this.getHTML 'html'，true））; 
}）; 
 
 spooky.on（'page.loaded'，function（html）{
 console.log（'############# EMIT'） ; 
 res.send（html）; 
}）; 
  

I tried to incorporate node/express with spooky js. However, I wasn't able to send back the elements I retrieved using spookyjs. Below is my code. With my code, I only got foo printed out although I intended to get all the DOM elements data with spooky. I was wondering if anyone has the experience how this can be done? Thanks in advance!

server.js

var express = require("express"); 
var site = express.createServer(); 
var fill = require('./spooky_fill.js');

site.use(express.static(__dirname + '/..'));

site.get("/", function(req, res) {   
fs.createReadStream("./index.html").pipe(res); });

site.get('/fill', fill.search);

site.listen(9201);

console.log("Server listening on http://localhost:9201");

spooky_fill.js

try {
  var Spooky = require('spooky');
} catch(e) {
  var Spooky = require('../lib/spooky');
}

exports.search = function(req, res) {

  var spooky = new Spooky({
    child: {
      transport: 'http'
    },
    casper: {
      logLevel: 'debug',
      verbose: true
    }
  }, function(err) {
    if(err) {
      e = new Error('Failed to initialize SpookyJS');
      e.details = err;
      throw e;
    }

    var js;
    spooky.start('https://www.google.com');
    spooky.then(function() {
      js = this.evaluate(function() {
        return document;
      });

    });
    res.write(js); //nothing is printed out from here

    res.write("foo"); //this is printed out

    spooky.then(function() {
      this.emit('clog', 'finished');
    });

    spooky.run();
  });

  spooky.on('error', function(e, stack) {
    console.error(e);

    if(stack) {
      console.log(stack);
    }
  });

  /*
   // Uncomment this block to see all of the things Casper has to say.
   // There are a lot.
   // He has opinions.
   spooky.on('console', function (line) {
   console.log(line);
   });
   */

  spooky.on('clog', function(message) {
    console.log(message);
  });

  spooky.on('log', function(log) {
    if(log.space === 'remote') {
      console.log(log.message.replace(/ \- .*/, ''));
    }
  });
};

解决方案

I solved the problem by doing something like the following:

spooky.then(function() {
    this.emit('page.loaded', this.getHTML('html', true));
});

spooky.on('page.loaded', function (html) {
    console.log('###############EMIT');
    res.send(html);
});

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