Replace text in HTML element and update the same file with Jsoup

Question

I have been trying for a while to edit the text within an element, but I've not had much luck finding similar examples. Those that I have found haven't worked.

The code I have at the moment is pretty much the same as shown in the Jsoup docs

Java

public void updateTitle() {
        Element content = doc.body().getElementById("titleCER");
        System.out.println(content); // Prints '<p class="certificate-CcM" id="titleCER">CERTIFICATE</p>'
        content.text().replaceAll("text", "Change to this"); // does nothing
        content.text("change to this!"); // does nothing
    }

HTML

<p class="certificate-CcM" id="titleCER">CERTIFICATE</p>

Right now when the code runs, it finds the element by ID fine, but then doesn't update anything in the HTML file

Thank you for any help

Answer 1

I was never writing the edited Document back to the HTML file

The solution is:

public void updateTitle() throws IOException {
        Element content = doc.body().getElementById("titleCER");
        System.out.println(content);
        content.text("change to this!");
        PrintWriter writer = new PrintWriter(input,"UTF-8");
        writer.write(doc.html() ) ;
        writer.flush();
        writer.close();
    }

where 'input' is:

File input = new File("/origionalFile.html");

Answer 2

Jsoup's text() method is used for retrieving the text content of an element, but to modify the text, you should use the text(String text) method.

public void updateTitle() {
        Element content = doc.body().getElementById("titleCER");
        if (content != null) {
            // Update text content using the text(String text) method
            content.text("Change to this!");
            System.out.println(content); // Prints the updated element
        } else {
            System.out.println("Element not found");
        }
    }