2010-06-02 80 views
11

我试图能够测试一个使用javascript来渲染大部分HTML的网站。使用HTMLUNIT浏览器,您将如何访问javascript生成的html?我正在浏览他们的文档,但不知道最好的方法可能是什么。使用htmlunit访问由Javascript生成的html -Java

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

这是一个简单的方法来找回页面的HTML,但你可以使用れ或另一种方式来访问由JavaScript生成的HTML?

回答

9

你得花一些时间来执行JavaScript。

查看下面的示例工作代码。 bucketdiv s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:使用

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

版本的HtmlUnit:

<dependency> 
    <groupId>net.sourceforge.htmlunit</groupId> 
    <artifactId>htmlunit</artifactId> 
    <version>2.12</version> 
</dependency>