java - 使用 Jsoup 删除所有 HTML 但保留行

Question

我有一个 String，其中包含一封电子邮件的一些内容，我想从这个 String 中删除所有 HTML 编码。

这是我目前的代码:

public static String html2text(String html) {

   Document document = Jsoup.parse(html);
   document = new Cleaner(Whitelist.basic()).clean(document);
   document.outputSettings().escapeMode(EscapeMode.xhtml);
   document.outputSettings().charset("UTF-8");
   html = document.body().html();

   html = html.replaceAll("<br />", "");

   splittedStr = html.split("Geachte heer/mevrouw,");

   html = splittedStr[1];

   html = "Geachte heer/mevrouw,"+html;

   return html;
}

此方法删除所有 HTML，保留行和大部分布局。但它也会返回一些 & 和 nbsp; 标签，这些标签没有被完全删除。看下面的输出，你可以看到 String 中仍然有一些标签，甚至是标签的一部分。我该如何摆脱这些？

  Loonheffingen       &n= bsp; Naam
 nr         in administratie         &nbs= p;           meldingen
  nummer

 1          &n= bsp;            = ;     0            &= nbsp;           &nbs= p;           1
           123456789L01

编辑:

<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">De afgekeurde meldingen zijn opgenomen in de bijlage: Afgekeurde meldingen.</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">

<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Wilt u zo spoedig mogelijk zorgdragen dat deze</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">meldingen gecorrigeerd worden aangeleverd?</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">mer</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Volg &nbsp; &nbsp; Aantal verwerkt &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Aantal afgekeurde</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">&nbsp;Loonheffingen &nbsp; &nbsp; &nbsp; &nbsp; Naam</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">nr &nbsp; &nbsp; &nbsp; &nbsp; in administratie &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; meldingen</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">&nbsp;nummer</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1</span><br style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">

这是我要解析的 HTML 的一部分。我想删除所有 HTML，但保留原始电子邮件的布局。

感谢任何帮助，

谢谢!

已解决

        Document xmlDoc = Jsoup.parse(file, "", Parser.xmlParser());
        Elements spans= xmlDoc.select("span");

        for (Element link : spans) {
            String html = textPlus(link);
            System.out.println(html);
        }


 public static String textPlus(Element elem) {
    List<TextNode> textNodes = elem.textNodes();
    if (textNodes.isEmpty()) {
        return "";
    }

    StringBuilder result = new StringBuilder();
    // start at the first text node
    Node currentNode = textNodes.get(0);
    while (currentNode != null) {
        // append deep text of all subsequent nodes
        if (currentNode instanceof TextNode) {
            TextNode currentText = (TextNode) currentNode;
            result.append(currentText.text());
        } else if (currentNode instanceof Element) {
            Element currentElement = (Element) currentNode;
            result.append(currentElement.text());
        }
        currentNode = currentNode.nextSibling();
    }
    return result.toString();
}

代码是作为 this 问题的答案提供的。

Answer 1

您需要遍历 JSoup 返回的 HTML 结构并整理文本节点，而不是这样做。这样您就可以让 JSoup 确定什么是真正的文本，实体编码将为您处理(例如 & -> & 等)。

参见 this SO question了解更多信息。