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HtmlUnitDriver does not load javascript when navigating a page from an url

 原文  2018-12-11 13:08:24  3   1    javascript/ java/ selenium/ htmlunit/ htmlunit-driver

Question

Here is my problem, I'm trying to load my website page for testing it but when i look at the html I get from the HtmlUnitDriver, elements displayed with javascript are not present. I am using selenium-java 3.141.59 and htmlunit-driver 2.33.3 Here is my code 

HtmlUnitDriver driver = new HtmlUnitDriver();
driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
driver.setJavascriptEnabled(true);
driver.get("https://stackoverflow.com/questions/7926246/why-doesnt-htmlunitdriver-execute-javascript");
driver.getPageSource();

I tried it on a stack overflow page, and in the DOM get from the driver there is a tag saying that "javascript is not enabled" 

   <noscript>

    &lt;div id="noscript-warning"&gt;Stack Overflow works best with JavaScript enabled
        &lt;img src="https://pixel.quantserve.com/pixel/p-c1rF4kxgLUzNc.gif" alt="" class="dno"&gt;
    &lt;/div&gt;

   </noscript>

I tried different Browsers and ways to enable javascript but nothing happened

1 answers

solution1
 0  2018-12-12 14:14:21

HTML <noscript> Tag

The <noscript> tag defines an alternate content for users that have disabled scripts in their browser or have a browser that doesn't support script. The <noscript> element can be used in both <head> and <body> . When used inside the <head> element, <noscript> must contain only <link> , <style> , or <meta> elements. The content inside the <noscript> element will be displayed if scripts are not supported, or are disabled in the user's browser. When I tried your code block: 

WebDriver driver = new HtmlUnitDriver();
driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
driver.setJavascriptEnabled(true);
driver.get("https://stackoverflow.com/questions/7926246/why-doesnt-htmlunitdriver-execute-javascript");
System.out.println(driver.getPageSource());

I got an error at the line: 

driver.setJavascriptEnabled(true);

As: 

The method setJavascriptEnabled(boolean) is undefined for the type WebDriver

There are two solutions:

  • Either cast the driver instance and invoke setJavascriptEnabled(true) as follows: 

     ((HtmlUnitDriver) driver).setJavascriptEnabled(true);

  • Or pass the argument true which enables javascript support as follows: 

     WebDriver driver = new HtmlUnitDriver(true); driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS); driver.get("https://stackoverflow.com/questions/7926246/why-doesnt-htmlunitdriver-execute-javascript"); System.out.println(driver.getPageSource()); driver.quit();

  • In both the cases the output is identical as follows: 

     <?xml version="1.0" encoding="UTF-8"?> <html itemscope="" itemtype="http://schema.org/QAPage" class="html__responsive"> <head> <title> java - Why doesn't HtmlUnitDriver execute JavaScript? - Stack Overflow </title> <link rel="shortcut icon" href="https://cdn.sstatic.net/Sites/stackoverflow/img/favicon.ico?v=4f32ecc8f43d"/> <link rel="apple-touch-icon image_src" href="https://cdn.sstatic.net/Sites/stackoverflow/img/apple-touch-icon.png?v=c78bd457575a"/> <link rel="search" type="application/opensearchdescription+xml" title="Stack Overflow" href="/opensearch.xml"/> <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0, minimum-scale=1.0"/> <meta property="og:type" content="website"/> <meta property="og:url" content="https://stackoverflow.com/questions/7926246/why-doesnt-htmlunitdriver-execute-javascript"/> <meta property="og:site_name" content="Stack Overflow"/> <meta property="og:image" itemprop="image primaryImageOfPage" content="https://cdn.sstatic.net/Sites/stackoverflow/img/apple-touch-icon@2.png?v=73d79a89bded"/> <meta name="twitter:card" content="summary"/> <meta name="twitter:domain" content="stackoverflow.com"/> <meta name="twitter:title" property="og:title" itemprop="title name" content="Why doesn't HtmlUnitDriver execute JavaScript?"/> <meta name="twitter:description" property="og:description" itemprop="description" content="I got the following problem: I am running a JUnit testCase with Selenium 2.9 using HtmlUnitDriver with Browserversion Firefox_3_6. JavaScript is enabled. Now when it should call and execute the fol..."/> <script src="https://rules.quantcount.com/rules-p-c1rF4kxgLUzNc.js" async=""> </script> <script async="" src="https://secure.quantserve.com/quant.js"> </script> <script async="" src="https://sb.scorecardresearch.com/beacon.js"> </script> <script async="" src="https://www.google-analytics.com/analytics.js"> </script> <script src="https://pagead2.googlesyndication.com/pagead/osd.js"> </script> <script src="https://cdn.ampproject.org/rtv/011811091519050/amp4ads-host-v0.js"> </script> <script src="https://securepubads.g.doubleclick.net/gpt/pubads_impl_rendering_278.js?21062890"> </script> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"> </script> <script src="https://cdn.sstatic.net/Js/stub.en.js?v=86fc07b77cb3"> </script> <link rel="stylesheet" type="text/css" href="https://cdn.sstatic.net/Shared/stacks.css?v=5023e4724ed5"/> <link rel="stylesheet" type="text/css" 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there a way to get this working with HtmlUnitDriver? 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