使用 jsoup 从另一个 div 类中提取 div 类

发布于 2024-12-10 05:09:30 字数 1212 浏览 3 评论 0原文

我正在尝试从另一个 div 类中的 div 类中提取 href。我尝试使用的代码片段的一个示例是：

<div class="productData"> 
           <div class="productTitle">
            <a href="https://rads.stackoverflow.com/amzn/click/com/0786866020" rel="nofollow noreferrer"> Fish! A Remarkable Way to Boost Morale and Improve Results</a> 
            <span class="ptBrand">by <a href="/Stephen-C.-Lundin/e/B001H6UE16">Stephen C.     Lundin</a>, <a href="/Harry-Paul/e/B001H9XQJA">Harry Paul</a>, <a href="/John-    Christensen/e/B003VKXJ04">John Christensen</a> and Ken Blanchard</span>
            <span class="binding"> (<span class="format">Hardcover</span> - Mar. 8, 2000)    </span>
           </div>

我尝试从此示例中提取内部类productTitle，但是使用代码：

Document doc = Jsoup.connect(fullST).timeout(10*1000).get();
            Element title = doc.getElementById("div.productTitle");
            System.out.println(title);

我得到null。尝试提取更高的元素，例如：

Element title = doc.getElementById("div.productData");

我也得到 null。我尝试了很多代码组合，但无法弄清楚从内部 div 类或内部 id 中提取的语法。

任何帮助将不胜感激。

原文

I am trying to extract a href from a div class within another div class. One example of a code snippet i am trying to use is:

<div class="productData"> 
           <div class="productTitle">
            <a href="https://rads.stackoverflow.com/amzn/click/com/0786866020" rel="nofollow noreferrer"> Fish! A Remarkable Way to Boost Morale and Improve Results</a> 
            <span class="ptBrand">by <a href="/Stephen-C.-Lundin/e/B001H6UE16">Stephen C.     Lundin</a>, <a href="/Harry-Paul/e/B001H9XQJA">Harry Paul</a>, <a href="/John-    Christensen/e/B003VKXJ04">John Christensen</a> and Ken Blanchard</span>
            <span class="binding"> (<span class="format">Hardcover</span> - Mar. 8, 2000)    </span>
           </div>

I am trying to extract the innter class productTitle from this example however using the code:

Document doc = Jsoup.connect(fullST).timeout(10*1000).get();
            Element title = doc.getElementById("div.productTitle");
            System.out.println(title);

I get null. Trying to extract higher elements such as:

Element title = doc.getElementById("div.productData");

I also get null. I have tried many code combinations but cannot figure out the syntax to extract from inner div classes or inner ids.

Any help would be appreciated.

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只怪假的太真实 2024-12-17 05:09:30

您尝试使用 getElementById() 按 ID 选择元素。这是错误的。这些 div 没有 ID。相反，它们有一个类名。您应该使用 select() 方法。

Element title = doc.select("div.productTitle").first();

请注意，类名选择器不一定返回单个元素。文档中可以有多个。我假设您需要第一个也是唯一的 Element，因此我在示例中添加了 first() 调用。

You're trying to select the element by ID using getElementById(). This is wrong. Those div's don't have an ID. Instead, they have a classname. You should use the select() method instead.

Element title = doc.select("div.productTitle").first();

Note that the classname selector doesn't necessarily return a single element. There can be multiple of them in the document. I assume that you need the first and the only Element, so I added first() call to the example.

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