<div class="content-sidebar-wrap"><main class="content" role="main" itemprop="mainContentOfPage" itemscope="itemscope" itemtype="http://schema.org/Blog"><article class="post-2334 post type-post status-publish format-standard has-post-thumbnail category-blog-basics entry" itemscope="itemscope" itemtype="http://schema.org/BlogPosting" itemprop="blogPost"><header class="entry-header"><h1 class="entry-title" itemprop="headline">Examples of Blogs</h1>
<p class="entry-meta">by <span class="entry-author" itemprop="author" itemscope="itemscope" itemtype="http://schema.org/Person"><span class="entry-author-name" itemprop="name">Kenneth Byrd</span></span> | Go from 0 to 5,000 blog subscribers in 60 days <a href="https://curlcentric.leadpages.net/leadbox/14581e773f72a2%3A12e927026b46dc/5758142528880640/" rel="nofollow">(Click Here)</a></p></header><img src="http://blogbasics.com/wp-content/uploads/Examples-of-Blogs.jpg" width="5315" height="3543" alt="examples of blogs" title="" class="attachment-tru-post wp-post-image" /><div class="entry-content" itemprop="text"><h3>Overview</h3>
<p>This article includes examples of blogs from various niches. There are millions of example blogs out there in all different shapes and sizes. A good place to start is <a href="http://technorati.com/" target="_blank">Technorati</a>, a directory of blogs, or <a href="http://alltop.com/" target="_blank">Alltop</a>. Search these websites and then come back and tell us about the good blogs and the bad blogs that you found. Below are also more examples of blogs that you should look at:</p>
<h3><strong>Personal blogs</strong></h3>
<p><a title="Curl Centric" href="http://www.curlcentric.com/natural-hair-101/" target="_blank">Curl Centric</a>: Dedicated to providing healthy hair care information.</p>
<h3>Travel</h3>
<p><a href="http://boardingarea.com/" target="_blank">Boarding Area</a>: A collection of bloggers on travel. Range from personal stories to specific advice on airlines, hotels and places.</p>
<div class="content-box-yellow"><a href="https://curlcentric.leadpages.net/leadbox/14581e773f72a2%3A12e927026b46dc/5758142528880640/">Learn how to start a blog that generates traffic, revenue, & popularity.</a></div>
<p><a href="http://vivisrandomramblings.blogspot.com/" target="_blank">Vivi’s Random Ramblings</a>: A nice collection of random posts mostly demonstrating that Violy is a well-travelled, excellent photographer.</p>
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我正在尝试使用Jsoup库解析HTML源代码中所有itemprop属性中存在的所有itemtype的值。
以下是HTML页面正文示例：
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<p class="entry-meta">by <span class="entry-author" itemprop="author" itemscope="itemscope" itemtype="http://schema.org/Person"><span class="entry-author-name" itemprop="name">Kenneth Byrd</span></span> | Go from 0 to 5,000 blog subscribers in 60 days <a href="https://curlcentric.leadpages.net/leadbox/14581e773f72a2%3A12e927026b46dc/5758142528880640/" rel="nofollow">(Click Here)</a></p></header><img src="http://blogbasics.com/wp-content/uploads/Examples-of-Blogs.jpg" width="5315" height="3543" alt="examples of blogs" title="" class="attachment-tru-post wp-post-image" /><div class="entry-content" itemprop="text"><h3>Overview</h3>
<p>This article includes examples of blogs from various niches. There are millions of example blogs out there in all different shapes and sizes. A good place to start is <a href="http://technorati.com/" target="_blank">Technorati</a>, a directory of blogs, or <a href="http://alltop.com/" target="_blank">Alltop</a>. Search these websites and then come back and tell us about the good blogs and the bad blogs that you found. Below are also more examples of blogs that you should look at:</p>
<h3><strong>Personal blogs</strong></h3>
<p><a title="Curl Centric" href="http://www.curlcentric.com/natural-hair-101/" target="_blank">Curl Centric</a>: Dedicated to providing healthy hair care information.</p>
<h3>Travel</h3>
<p><a href="http://boardingarea.com/" target="_blank">Boarding Area</a>: Â A collection of bloggers on travel. Â Range from personal stories to specific advice on airlines, hotels and places.</p>
<div class="content-box-yellow"><a href="https://curlcentric.leadpages.net/leadbox/14581e773f72a2%3A12e927026b46dc/5758142528880640/">Learn how to start a blog that generates traffic, revenue, & popularity.</a></div>
<p><a href="http://vivisrandomramblings.blogspot.com/" target="_blank">Vivi’s Random Ramblings</a>: A nice collection of random posts mostly demonstrating that Violy is a well-travelled, excellent photographer.</p>
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<p><a href="http://www.whygo.com/" target="_blank">Why go network of blogs</a>: Another group of travel bloggers. Â Each blogger has their own patch, which range from Portland, which looks a nice city, to Iceland and France.</p>
<h3>Technical</h3>
<p><a href="http://techcrunch.com/" target="_blank">Techcrunch</a>: Â This is the one to learn all about technology and in particular technology business, technology start-ups and gadgets. Â You’ll usually hear the techie gossip here first.</p>
<p><a href="http://speckyboy.com/2010/02/25/50-amazing-personal-blog-web-designs/" target="_blank">Speckyboy.com</a>: Great blog on the design of websites. Â Good on lists, (usually 50) of well researched examples of good or unusual design. Â Gives even the least technical good ideas to discuss with their own designers.</p>
<h3>On Blogging</h3>
<p><a href="http://www.trafficgenerationcafe.com/" target="_blank">Traffic Generation Cafe</a>: Ana Hoffman’s very friendly, very knowledgeable blog on building traffic for your blog.</p>
<div class="content-box-yellow"><a href="https://curlcentric.leadpages.net/leadbox/14581e773f72a2%3A12e927026b46dc/5758142528880640/">Learn how to start a blog that generates traffic, revenue, & popularity.</a></div>
<p><a href="http://blogbasics.com/blog/" target="_blank">Blog Basics</a>: This website is a blog that is focused on topics like ‘how to blog’ and ‘how to make money blogging’.</p>
<h3>Over to you</h3>
<p>Which blogs do you like? Â Are you writing a blog? Â Then tell us about it.</p>
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</div><footer class="entry-footer"></footer></article><div class="entry-comments" id="comments"><h3>Comments</h3><ol class="comment-list">
<li class="comment even thread-even depth-1" id="comment-261">
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<img alt='' src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://0.gravatar.com/avatar/9e0fce9a7b5f7de7f6c528f448007f08?s=48&d=mm&r=g" srcset='http://0.gravatar.com/avatar/9e0fce9a7b5f7de7f6c528f448007f08?s=96&d=mm&r=g 2x' class='avatar avatar-48 photo' height='48' width='48' /><noscript><img alt='' src="http://0.gravatar.com/avatar/9e0fce9a7b5f7de7f6c528f448007f08?s=48&d=mm&r=g" srcset='http://0.gravatar.com/avatar/9e0fce9a7b5f7de7f6c528f448007f08?s=96&d=mm&r=g 2x' class='avatar avatar-48 photo' height='48' width='48' /></noscript><span itemprop="name">violy</span> <span class="says">says</span> </p>
<p class="comment-meta">
<time class="comment-time" datetime="2012-01-09T04:42:00+00:00" itemprop="commentTime"><a href="http://blogbasics.com/examples-of-blogs/#comment-261" class="comment-time-link" itemprop="url">January 9, 2012 at 4:42 am</a></time> </p>
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<div class="comment-content" itemprop="commentText">
<p>Hi sir thank you so much for the nice compliment about my blog (Vivi’s Random Ramblings”), I’m blogging for not even 2 months now and it’s really overwhelming to see this compliment and getting a lot of good feedback  too and traffic which is a real surprise .. thank you so much!! – violy</p>
</div>
<div class="comment-reply"><a rel='nofollow' class='comment-reply-link' href='#comment-261' onclick='return addComment.moveForm( "comment-261", "261", "respond", "2334" )' aria-label='Reply to violy'>Reply</a></div>
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<li class="comment odd alt depth-2" id="comment-262">
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<img alt='' src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://1.gravatar.com/avatar/4383ac0510061b683651a0eca3d58e42?s=48&d=mm&r=g" srcset='http://1.gravatar.com/avatar/4383ac0510061b683651a0eca3d58e42?s=96&d=mm&r=g 2x' class='avatar avatar-48 photo' height='48' width='48' /><noscript><img alt='' src="http://1.gravatar.com/avatar/4383ac0510061b683651a0eca3d58e42?s=48&d=mm&r=g" srcset='http://1.gravatar.com/avatar/4383ac0510061b683651a0eca3d58e42?s=96&d=mm&r=g 2x' class='avatar avatar-48 photo' height='48' width='48' /></noscript><span itemprop="name"><a href="http://blogbasics.com" class="comment-author-link" rel="external nofollow" itemprop="url">Paul Odtaa</a></span> <span class="says">says</span> </p>
<p class="comment-meta">
<time class="comment-time" datetime="2012-01-09T09:44:00+00:00" itemprop="commentTime"><a href="http://blogbasics.com/examples-of-blogs/#comment-262" class="comment-time-link" itemprop="url">January 9, 2012 at 9:44 am</a></time> </p>
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<div class="comment-content" itemprop="commentText">
<p>Hi Violy, </p>
<p>I really like your blog and your photography is great. </p>
</div>
<div class="comment-reply"><a rel='nofollow' class='comment-reply-link' href='#comment-262' onclick='return addComment.moveForm( "comment-262", "262", "respond", "2334" )' aria-label='Reply to Paul Odtaa'>Reply</a></div>
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<li class="comment even thread-odd thread-alt depth-1" id="comment-270">
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<img alt='' src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://1.gravatar.com/avatar/ad28f49a806d0e3abd1a94013a259b9b?s=48&d=mm&r=g" srcset='http://1.gravatar.com/avatar/ad28f49a806d0e3abd1a94013a259b9b?s=96&d=mm&r=g 2x' class='avatar avatar-48 photo' height='48' width='48' /><noscript><img alt='' src="http://1.gravatar.com/avatar/ad28f49a806d0e3abd1a94013a259b9b?s=48&d=mm&r=g" srcset='http://1.gravatar.com/avatar/ad28f49a806d0e3abd1a94013a259b9b?s=96&d=mm&r=g 2x' class='avatar avatar-48 photo' height='48' width='48' /></noscript><span itemprop="name"><a href="http://allisondduncan.com" class="comment-author-link" rel="external nofollow" itemprop="url">Allison Duncan</a></span> <span class="says">says</span> </p>
<p class="comment-meta">
<time class="comment-time" datetime="2012-01-20T21:17:00+00:00" itemprop="commentTime"><a href="http://blogbasics.com/examples-of-blogs/#comment-270" class="comment-time-link" itemprop="url">January 20, 2012 at 9:17 pm</a></time> </p>
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<div class="comment-content" itemprop="commentText">
<p>Hi there,</p>
<p>Thanks for featuring my blog on your site. It’s always nice to see your work being appreciated and linked to.</p>
<p>I look forward to seeing what your site has coming down the pike.</p>
<p>Thanks for reading!</p>
<p>Allison</p>
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我正在使用jsoup库来解析HTML并将其解压缩。我正在尝试使用以下代码：
doc = Jsoup.connect("http://blogbasics.com/examples-of-blogs/").get();
Elements links = doc.select("itemtype > [itemprop]");
for (Element element : links) {
System.out.println(" itemprop :"+element.attr("itemprop"));
}
} catch (IOException e) {
e.printStackTrace();
}
但我得到的是空值。我是这项工作的新手，请让我知道正确的代码。如果从HTML中提取itemtype和itemprop的任何其他方式，请分享它将会很有帮助。
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<main class="content" role="main" itemprop="mainContentOfPage" itemscope="itemscope"
itemtype="http://schema.org/Blog"><article class="post-2334 post type-post status-publish
format-standard has-post-thumbnail category-blog-basics entry" itemscope="itemscope"
itemtype="http://schema.org/BlogPosting" itemprop="blogPost"><header class="entry-header">
<h1 class="entry-title" itemprop="headline">Examples of Blogs</h1>
<p class="entry-meta">by <span class="entry-author" itemprop="author" itemscope="itemscope"
itemtype="http://schema.org/Person"><span class="entry-author-name" itemprop="name">Kenneth Byrd</span></span> |
Go from 0 to 5,000 blog subscribers in 60 days
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</p></header><img src="http://blogbasics.com/wp-content/uploads/Examples-of-Blogs.jpg" width="5315" height="3543"
alt="examples of blogs" title="" class="attachment-tru-post wp-post-image" /><div class="entry-content"
itemprop="text"><h3>Overview</h3><p>This article includes examples of blogs
from various niches. There are millions of example blogs out there in all
different shapes and sizes. A good place to start is
</p>
预期产出
itemtype="http://schema.org/Blog">
itemprop="mainContentOfPage"
itemtype="http://schema.org/BlogPosting"
itemprop="blogPost"
itemtype="http://schema.org/Person"
itemprop="author"
itemprop="name">
itemprop="text"
答案 0 :(得分：1)
我不确定您真正想要的是什么，但似乎您需要将包含属性itemtype的所有元素与属性itemprop或仅包含itemprop的元素相关联但是包含itemtype的元素的直接子元素。如果是这种情况，那么您可以使用：
String html = ""
+"<div class=\"content-sidebar-wrap\">"
+"<main class=\"content\" role=\"main\" itemprop=\"mainContentOfPage\" itemscope=\"itemscope\" "
+"itemtype=\"http://schema.org/Blog\"><article class=\"post-2334 post type-post status-publish "
+"format-standard has-post-thumbnail category-blog-basics entry\" itemscope=\"itemscope\" "
+"itemtype=\"http://schema.org/BlogPosting\" itemprop=\"blogPost\"><header class=\"entry-header\">"
+"<h1 class=\"entry-title\" itemprop=\"headline\">Examples of Blogs</h1> "
+"<p class=\"entry-meta\">by <span class=\"entry-author\" itemprop=\"author\" itemscope=\"itemscope\" "
+"itemtype=\"http://schema.org/Person\"><span class=\"entry-author-name\" itemprop=\"name\">Kenneth Byrd</span></span> |"
+" Go from 0 to 5,000 blog subscribers in 60 days"
+" <a href=\"https://curlcentric.leadpages.net/leadbox/14581e773f72a2%3A12e927026b46dc/5758142528880640/\" rel=\"nofollow\">(Click Here)</a>"
+" </p></header><img src=\"http://blogbasics.com/wp-content/uploads/Examples-of-Blogs.jpg\" width=\"5315\" height=\"3543\" "
+" alt=\"examples of blogs\" title=\"\" class=\"attachment-tru-post wp-post-image\" /><div class=\"entry-content\""
+" itemprop=\"text\"><h3>Overview</h3><p>This article includes examples of blogs"
+" from various niches. There are millions of example blogs out there in all "
+" different shapes and sizes. A good place to start is "
+" </p>"
;
Document doc = Jsoup.parse(html,"");
Elements els = doc.select("*[itemtype][itemprop], *[itemtype] > *[itemprop]");
for (Element el:els){
System.out.print(el.attr("itemtype").isEmpty()?"":("\n" +el.attr("itemtype")+"\n"));
System.out.println(el.attr("itemprop"));
}
重要的部分是 JSoup CSS selector *[itemtype][itemprop], *[itemtype] > *[itemprop]，它有两部分：
*[itemtype][itemprop]选择具有这两个属性的元素。
*[itemtype] > *[itemprop]选择属性为itemprop的元素，这些元素是属性为itemtype的元素的直接子元素。如果您想允许所有孩子，不仅仅是直接孩子，那么请忽略>。
选择器之间的逗号作为“OR”，因此将返回与列出的任何选择器匹配的所有元素。