【发布时间】：2018-06-13 11:49:19
【问题描述】：
我是 Nightmare js 的新手，正在尝试从网站上抓取一些数据。但是后来我收到了这个错误，我无法理解我做错了什么。有人可以解释一下是什么问题吗？
我要抓取的元素如下。我正在尝试提取标签之间的文本，如下<span class="home__matches__match__header__game-id">Game ID 9490 - </span> Kenya - Premier League
<div class="home__sports">
<div class="home__sports__title">
<div class="home__sports__title__category">Kenya - Premier League</div>
<div class="home__sports__title__copy">
<span title="Copy" class="icon home__sports__title__copy__icon icon__copy has-tooltip">
<svg
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" id="Capa_1" x="0px" y="0px" viewBox="0 0 488.244 488.244" xml:space="preserve" width="15px">
<g>
<g>
<g>
<path d="M284.141,138.477V72.896H43.678v415.348h306.045V138.477H284.141z" fill="#FFFFFF"></path>
<polygon points="290.682,72.723 290.682,131.247 349.205,131.247 " fill="#FFFFFF"></polygon>
</g>
<g>
<polygon points="385.525,0 385.525,58.524 444.048,58.524 " fill="#FFFFFF"></polygon>
<polygon points="378.985,65.753 378.985,0.172 138.521,0.172 138.521,65.581 291.543,65.581 357.124,131.162 357.124,415.519 444.566,415.519 444.566,65.753 " fill="#FFFFFF"></polygon>
</g>
</g>
</g>
</svg>
</span>
<span>Copy</span>
</div>
</div>
<div class="home__sports__matches scrollable" tabindex="0">
<!---->
<!---->
<!---->
<!---->
<!---->
<div class="home__matches__match">
<div class="home__matches__match__header clearfix">
<span class="home__matches__match__header__game-id">Game ID 9490 - </span> Kenya - Premier League
<span class="pull-right">13/06, 15:00</span>
</div>
<div class="home__matches__match__odds">
<button class="home__matches__match__odds__odd bold clearfix">
Wazito
<span class="pull-right bold">8.84</span>
</button>
<button class="home__matches__match__odds__odd bold clearfix">
X
<span class="pull-right bold">4.67</span>
</button>
<button class="home__matches__match__odds__odd bold clearfix">
GOR Mahia FC
<span class="pull-right bold">1.41</span>
</button>
<button class="home__matches__match__odds__markets clearfix bold">
+25
</button>
</div>
<!---->
</div>
<div class="home__matches__match">
<div class="home__matches__match__header clearfix">
<span class="home__matches__match__header__game-id">Game ID 3924 - </span> Kenya - Premier League
<span class="pull-right">13/06, 15:00</span>
</div>
<div class="home__matches__match__odds">
<button class="home__matches__match__odds__odd bold clearfix">
Kariobangi Sharks
<span class="pull-right bold">2.61</span>
</button>
<button class="home__matches__match__odds__odd bold clearfix">
X
<span class="pull-right bold">3.05</span>
</button>
<button class="home__matches__match__odds__odd bold clearfix">
Nzoia United
<span class="pull-right bold">2.93</span>
</button>
<button class="home__matches__match__odds__markets clearfix bold">
+25
</button>
</div>
<!---->
</div>
<div class="home__matches__match">
<div class="home__matches__match__header clearfix">
<span class="home__matches__match__header__game-id">Game ID 8769 - </span> Kenya - Premier League
<span class="pull-right">13/06, 15:00</span>
</div>
<div class="home__matches__match__odds">
<button class="home__matches__match__odds__odd bold clearfix">
Ulinzi Stars FC
<span class="pull-right bold">2.3</span>
</button>
<button class="home__matches__match__odds__odd bold clearfix">
X
<span class="pull-right bold">3.05</span>
</button>
<button class="home__matches__match__odds__odd bold clearfix">
Kakamega Homeboyz
<span class="pull-right bold">4.2</span>
</button>
<button class="home__matches__match__odds__markets clearfix bold">
+25
</button>
</div>
<!---->
</div>
<div class="home__matches__match">
<div class="home__matches__match__header clearfix">
<span class="home__matches__match__header__game-id">Game ID 3021 - </span> Kenya - Premier League
<span class="pull-right">13/06, 15:00</span>
</div>
<div class="home__matches__match__odds">
<button class="home__matches__match__odds__odd bold clearfix">
AFC Leopards SC
<span class="pull-right bold">2.66</span>
</button>
<button class="home__matches__match__odds__odd bold clearfix">
X
<span class="pull-right bold">3.21</span>
</button>
<button class="home__matches__match__odds__odd bold clearfix">
Sofapaka FC
<span class="pull-right bold">2.61</span>
</button>
<button class="home__matches__match__odds__markets clearfix bold">
+25
</button>
</div>
<!---->
</div>
</div>
<!---->
</div>
var jquery = require('jquery');
var Nightmare = require('nightmare');
var express = require('express');
nightmare = Nightmare()
var app = express();
nightmare.goto('https://www.betika.com/competition/701')
.wait(2000)
.evaluate(function () {
var gameids=[]
var res;
var gameids=[]
$('.home__matches__match__header__game-id').each(function(){
console.log('Entered')
item ={}
item['gameid'] = $(this).text()
gameids.push(item);
})
return {
res:gameids
};
},function (value) {
/*for (gameids in value){
console.log(value[gameids.gameid])
}*/
console.log("gotcha",value)
}
)
.run(function (err, nightmare) {
if (err) return console.log(err);
});
结果：-
{ Error: navigation error
at unserializeError (/home/surajit/WebstormProjects/Odds/node_modules/nightmare/lib/ipc.js:162:13)
at EventEmitter.<anonymous> (/home/surajit/WebstormProjects/Odds/node_modules/nightmare/lib/ipc.js:89:13)
at Object.onceWrapper (events.js:312:19)
at emitTwo (events.js:125:13)
at EventEmitter.emit (events.js:213:7)
at ChildProcess.<anonymous> (/home/surajit/WebstormProjects/Odds/node_modules/nightmare/lib/ipc.js:49:10)
at emitTwo (events.js:125:13)
at ChildProcess.emit (events.js:213:7)
at process.nextTick (internal/child_process.js:755:12)
at _combinedTickCallback (internal/process/next_tick.js:95:7)
code: -7,
details: 'Navigation timed out after 30000 ms',
url: 'https://www.betika.com/competition/701' }
【问题讨论】：
标签： node.js web-scraping nightmare