Java / JSoup纯文本提取和存储

Question

I am trying to solve the following problem. 我正在尝试解决以下问题。

Assume I have a HTML file that reads: 假设我有一个HTML文件，内容为：

</div class = nameCouldBeAnything1><br>
    <p>some text here</p><br>
</div>

<div class = nameCouldBeAnything2><br>
    <p>some more text here</p><br>
</div>

<div class = nameCouldBeAnything3><br>
    <p>even more text here</p><br>
<p>and here</p><br>
<p>and here</p><br>
<p>and here</p><br>
<p>and here</p><br>
</div>

What I am trying to achieve is to store the contents in between the div tags into separate string or string array variables. 我想要实现的是将div标记之间的内容存储到单独的字符串或字符串数组变量中。

If there is a Jsoup solution this would be great, if there isn't then a regex string matching starting from p and ending at /p would be great also. 如果有一个Jsoup解决方案，那就太好了；如果没有，那么从p开始到/ p结束的正则表达式字符串匹配也就很棒。

The challenges to take into consideration are: 要考虑的挑战是：

1) You can not use specific div class names to pinpoint the location of the p tags in order to obtain the plaintext using Jsoup. 1）您不能使用特定的div类名称来精确定位p标签的位置，以便使用Jsoup获取纯文本。

2) Using doc.select("body p") or doc.select("div p") from Jsoup kind of works, however when you want to store the p tags into string variables they will be written individually into variables instead of by div into variables. 2）使用doc.select("body p")或doc.select("div p") ，但是，当您要将p标签存储到字符串变量中时，它们将被分别写入变量中，而不是通过div成变量。

This is what I have so far: 这是我到目前为止的内容：

htmlFile = Jsoup.parse(input, "UTF-8");
Elements body = htmlFile.select("body p");
Element bodyStart = body.first();
Element bodyEnd = body.last(); 
Element p = bodyStart;
int divCount = 0; 

while(p != bodyEnd)
{
    p = body.get(divCount);
    System.out.println(p.text());        
    divCount++;
}

This will get each individual p tag however I want the p tags to stay within their respective divs and store each individual div into string/string array variables. 这将获取每个单独的p标签，但是我希望p标签保留在它们各自的div中，并将每个单独的div存储到字符串/字符串数组变量中。

Answer 1

You need to traverse the document body->div->p instead of body->p . 您需要遍历文档body->div->p而不是body->p 。

Elements divs = htmlFile.select("body div");
//initialize div map here
for(Element div : divs) {
    Elements paras = div.getElementsByTag("p");
    for(Element para : paras) {
       String text = para.text();
    }
}

You can store it any data structure based on your requirement while traversing. 遍历时可以根据需要将其存储为任何数据结构。 Hope this helps. 希望这可以帮助。

Answer 2

This will put the div-tags that contain a p-tag into a list of strings. 这会将包含p标签的div标签放入字符串列表中。

public class Main {
  public static void main(String[] args) throws IOException {
    File html = new File("src/main/resources/markup.html");
    Document doc = Jsoup.parse(html, "UTF-8");
    //all div tags wrapping a p tag
    Elements divs = doc.select("div:has(p)");
    //put the divs into a list
    List<String> list = new ArrayList<String>();
    for (Element div : divs) {
      list.add(div.toString());
      System.out.println(div + "\n");
    }
  }
}

markup.html markup.html

<!DOCTYPE html>
<head>
  <meta charset="UTF-8" />
  <title>whatever</title>
</head>

<body>
  <div class=nameCouldBeAnything0>
    <p>some text here</p>
  </div>

  <div class=nameCouldBeAnything1></div>

  <div class=nameCouldBeAnything2>
    <p>some more text here</p>
  </div>

  <div class=nameCouldBeAnything3>
    <p>even more text here</p>
    <p>and here</p>
    <p>and here</p>
    <p>and here</p>
    <p>and here</p>
  </div>

  <div class=nameCouldBeAnything4>
    <span>even more text here</span>
  </div>
</body>
</html>

output 输出

<div class="nameCouldBeAnything0"> 
  <p>some text here</p> 
</div>

<div class="nameCouldBeAnything2"> 
  <p>some more text here</p> 
</div>

<div class="nameCouldBeAnything3"> 
  <p>even more text here</p> 
  <p>and here</p> 
  <p>and here</p> 
  <p>and here</p> 
  <p>and here</p> 
</div>

Answer 3

I was able to solve my dilemma. 我能够解决自己的困境。

This is the code I used, hopefully it helps someone in need. 这是我使用的代码，希望它可以帮助需要帮助的人。

Thanks to everyone that posted. 感谢所有张贴的人。

public static ArrayList proc(Document htmlFile)
{
    Elements body = htmlFile.select("body");
    ArrayList HTMLPlainText = new ArrayList();

    HTMLPlainText.add(htmlFile.title());

    for(Iterator<Element> it = body.iterator(); it.hasNext();)
    {
        Element pBody = it.next();
        Elements. pTag = pBody.getElementsByTag("p");parents();

            for(int pTagCount = 0; pTagCount < pTag.size(); pTagCount++)
            {
                Element p = pTag.get(pTagCount);
                String pt = p.text();

                if(pt.length() != 0)
                {
                    HTMLPainText.add(pt);
                    pTagCount++:
                }

                pTag.parents().empty();     

            }
    }
}

Note, there may be some syntax errors, I manually typed this in. 注意，可能有一些语法错误，我手动输入了此错误。

Java / JSoup纯文本提取和存储

问题描述

3 个解决方案

解决方案1
0 2012-08-21 09:23:42

解决方案2
0 2012-08-21 09:46:45

解决方案3
0 已采纳 2012-08-28 07:51:20

Java / JSoup纯文本提取和存储

问题描述

3 个解决方案

解决方案1 0 2012-08-21 09:23:42

解决方案2 0 2012-08-21 09:46:45

解决方案3 0 已采纳 2012-08-28 07:51:20

解决方案1
0 2012-08-21 09:23:42

解决方案2
0 2012-08-21 09:46:45

解决方案3
0 已采纳 2012-08-28 07:51:20