checked = true, from earlier checkbox

I have a question regarding the checkbox. I have 2 html pages. In the first one, there are checkboxes, which can be checked by the user. After pressing the submit button, the second page loads containing the same checkboxes, which now should be checked="true", if the user checked them in the first html page. How can I do this second html page? I assume I have to use expression language. My project is made with Spring Boot and Thymeleaf as expresison language.