CasperJS，页面卡在加载屏幕上 [英] CasperJS, Page Stuck on Loading Screen

问题描述

我正在尝试使用casperjs来获取此页面的评论：

I'm trying to use casperjs to grab a comment off of this page:

http://www.regulations.gov/#!documentDetail;D=APHIS-2013-0013-0083

但是当我将casper导航到它时，它会卡在加载页面上。这是我使用casper.capture（）拍摄的图像;

but when I navigate casper to it, it gets stuck on the 'loading' page. This is the image that I took using casper.capture();

我的完整代码：

var x = require('casper').selectXPath;

casper.userAgent('Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)');

casper.start('http://www.regulations.gov/#!documentDetail;D=APHIS-2013-0013-0083');

casper.then(function () {
casper.capture('ourImage1.png');
console.log('Copying comment from Regulations...');
casper.wait(3000, function() {
    var text = casper.fetchText(x('/html/body/div[3]/div[2]/div[2]/div[3]/div/table/tbody/tr/td[1]/div/div[3]/div[1]/div/div[2]'));
    console.log(text);
    casper.wait(3000, function() {
        casper.capture('ourImage2.png');
    });
});
});

casper.run();

我甚至用casper.wait（）加载了30秒，但似乎没有工作。它只是卡在加载页面上。

I even gave it up to 30 seconds to load with casper.wait(), but nothing seems to work. It just gets stuck with the loading page.

推荐答案

如果你改变这个（可怕的）这很好用 userAgent 或完全删除该行：

This works perfectly fine if you change this (horrible) userAgent or remove the line altogether:

casper.userAgent('Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)');

该网站可能提供特殊的IE 6优化版本，可以打破phantomjs解析。当我在测试前添加以下代码时，它显示多个错误，这些错误在没有 userAgent 的情况下消失。

It may be possible that the site provides special IE 6 optimized version that breaks phantomjs parsing. When I added the following code in front of the test, it displayed multiple errors that went away without the userAgent.

casper.on("remote.message", function(msg){
    this.echo("remote.msg: " + msg);
});

casper.on("resource.error", function(resourceError){
    this.echo("res.err: " + JSON.stringify(resourceError));
});

这篇关于CasperJS，页面卡在加载屏幕上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！