How to replace words with span tag using jsoup?

Answer 1

In this case you must traverse your document as suggested by this answer. Here's a way of doing it using Jsoup APIs:

• NodeTraversor and NodeVisitor allow you to traverse the DOM
• Node.replaceWith(...) allows for replacing a node in the DOM

Here's the code:

public class JsoupReplacer {

  public static void main(String[] args) {
    so6527876();
  }

  public static void so6527876() {
    String html = 
    "" +
    "" +
    "" +
    "" +
    "    
" +
    "         
I am going by flying" +
    "           
mr tt
" +
    "         
 " +
    "    
" +
    "    " +
    "";
    Document doc = Jsoup.parse(html);

    final List nodesToChange = new ArrayList();

    NodeTraversor nd  = new NodeTraversor(new NodeVisitor() {

      @Override
      public void tail(Node node, int depth) {
        if (node instanceof TextNode) {
          TextNode textNode = (TextNode) node;
          String text = textNode.getWholeText();
          String[] words = text.trim().split(" ");
          for (String word : words) {
            if (word.length() > 4) {
              nodesToChange.add(textNode);
              break;
            }
          }
        }
      }

      @Override
      public void head(Node node, int depth) {        
      }
    });

    nd.traverse(doc.body());

    for (TextNode textNode : nodesToChange) {
      Node newNode = buildElementForText(textNode);
      textNode.replaceWith(newNode);
    }

    System.out.println("result: ");
    System.out.println();
    System.out.println(doc);
  }

  private static Node buildElementForText(TextNode textNode) {
    String text = textNode.getWholeText();
    String[] words = text.trim().split(" ");
    Set longWords = new HashSet();
    for (String word : words) {
      if (word.length() > 4) {
        longWords.add(word);
      } 
    }
    String newText = text;
    for (String longWord : longWords) {
      newText = newText.replaceAll(longWord, 
          "" + longWord + "");
    }
    return new DataNode(newText, textNode.baseUri());
  }

}