14

I am trying to be able to test a website that uses javascript to render most of the HTML. With the HTMLUNIT browser how would you be able to access the html generated by the javascript? I was looking through their documentation but wasn't sure what the best approach might be. 

WebClient webClient = new WebClient();
HtmlPage currentPage = webClient.getPage("some url");
String Source = currentPage.asXml();
System.out.println(Source);

This is an easy way to get back the html of the page but would you use the domNode or another way to access the html generated by the javascript?

4

2 回答 2

10

你必须给 JavaScript 一些时间来执行。

检查下面的示例工作代码。bucket divs 不在原始来源中。

import java.io.IOException;
import java.net.MalformedURLException;
import java.util.List;
import com.gargoylesoftware.htmlunit.*;
import com.gargoylesoftware.htmlunit.html.HtmlPage;

public class GetPageSourceAfterJS {
    public static void main(String[] args) throws FailingHttpStatusCodeException, MalformedURLException, IOException {
        java.util.logging.Logger.getLogger("com.gargoylesoftware").setLevel(java.util.logging.Level.OFF); /* comment out to turn off annoying htmlunit warnings */
        WebClient webClient = new WebClient();
        String url = "http://www.futurebazaar.com/categories/Home--Living-Luggage--Travel-Airbags--Duffel-bags/cid-CU00089575.aspx";
        System.out.println("Loading page now: "+url);
        HtmlPage page = webClient.getPage(url);
        webClient.waitForBackgroundJavaScript(30 * 1000); /* will wait JavaScript to execute up to 30s */

        String pageAsXml = page.asXml();
        System.out.println("Contains bucket? --> "+pageAsXml.contains("bucket"));

        //get divs which have a 'class' attribute of 'bucket'
        List<?> buckets = page.getByXPath("//div[@class='bucket']");
        System.out.println("Found "+buckets.size()+" 'bucket' divs.");

        //System.out.println("#FULL source after JavaScript execution:\n "+pageAsXml);
    }
}

输出：

Loading page now: http://www.futurebazaar.com/categories/Mobiles-Mobile-Phones/cid-CU00089697.asp‌​x?Rfs=brandZZFly001PYXQcurtrayZZBrand
Contains bucket? --> true
Found 3 'bucket' divs.

使用的 HtmlUnit 版本：

<dependency>
    <groupId>net.sourceforge.htmlunit</groupId>
    <artifactId>htmlunit</artifactId>
    <version>2.12</version>
</dependency>
于 2013-04-27T19:45:59.697 回答
2

假设问题是由于 AJAX 调用而由 JavaScript 生成的 HTML，您是否尝试过HtmlUnit FAQ 中的“AJAX 不起作用”部分？

howtos中还有一节介绍如何将 HtmlUnit 与 JavaScript 一起使用。

如果您的问题在这里没有得到解答，我认为我们需要更多细节才能提供帮助。

于 2010-06-02T22:35:25.147 回答