如何从 HTML 文档中的脚本标记解析 XML？
我一直在使用 Jsoup 从网站上抓取 HTML 数据，但我需要获取 javascript 标记内的 XML 部分，因为它有一堆我需要提取和下载图像的 URL。它看起来像这样：
<script type="text/javascript">
var xmlTxt = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><mediaObject><mediaList rail="1"><carMedia thumbnail="http://images.blah.com/scaler/80/60/images/2011/9/22/307/179/22343202654.307179719.IM1.MAIN.565x421_A.562x421.jpg" url="http://images.blah.com/scaler/544/408/images/2011/9/22/307/179/22343202654.307179719.IM1.MAIN.565x421_A.562x421.jpg" type="INV_PHOTO" mediaLabel="" category="UNCATEGORIZED" sequence="2"/></mediaList></mediaObject>';'
接下来是 script 标签内的一大堆 javascript 代码。如果我有 Jsoup Document，从页面中提取这些 URL 的最佳方法是什么？如果我不能用 Jsoup 做到这一点，我该怎么办？问题在于图像保存在轮播中，因此页面上的 HTML 仅显示轮播中当前显示的图像的源。
I've been using Jsoup to scrape HTML data from a website, but there is one section of XML inside a javascript tag that I need to get because it has a bunch of URLs I need to pull out and download the images. Here is what it looks like:
<script type="text/javascript">
var xmlTxt = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><mediaObject><mediaList rail="1"><carMedia thumbnail="http://images.blah.com/scaler/80/60/images/2011/9/22/307/179/22343202654.307179719.IM1.MAIN.565x421_A.562x421.jpg" url="http://images.blah.com/scaler/544/408/images/2011/9/22/307/179/22343202654.307179719.IM1.MAIN.565x421_A.562x421.jpg" type="INV_PHOTO" mediaLabel="" category="UNCATEGORIZED" sequence="2"/></mediaList></mediaObject>';'
That is followed by a whole bunch of javascript code inside the script tag. What is the best way to extract those URLs from the page if I have a Jsoup Document? If I can't do it with Jsoup, how can I do it? The problem is that the images are held in a carousel and so the HTML on the page only shows the source for the ones currently displayed in the carousel.
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首先，您可以使用 javascript 绑定将 xmlTxt 获取到 java 中。请参阅 http://developer.android.com/guide/webapps/webview.html# BindingJavaScript
其次，解析您的 xml。我不确定您是否可以在一般 XML（而不是 HTML）中使用 Jsoup。如果不能，您可以使用 android 内置 xmlpullparser ( http:// developer.android.com/reference/org/xmlpull/v1/XmlPullParser.html ）或其他 xml 库。
Fist, you can get xmlTxt into java using javascript binding. see http://developer.android.com/guide/webapps/webview.html#BindingJavaScript
Second, parse your xml. I'm not sure you can use Jsoup in general XML(not HTML). If you can't , you can use android builtin xmlpullparser ( http://developer.android.com/reference/org/xmlpull/v1/XmlPullParser.html ) or other xml libraries.
好吧，我用肮脏的方式做到了，但它应该有效。我希望有一个更优雅的解决方案，但现在我只是将文档转换为字符串（
doc.toString()），然后获取开始和结束 XML 标记的开始和结束索引我想要的。从那里我应该能够使用内置的 Java XML 解析器来完成其余的工作。Well, I did it the dirty way but it should work. I was hoping there was a more elegant solution, but for now I just converted the doc to a string (
doc.toString()) and then get the start and ending index of the starting and ending XML tags that I want. From there I should be able to use the built in Java XML parser to do the rest.