Medium XSS - Controller class and HTML page

index.html

		<center>
            <p style="font-size:2em;" th:utext="${xss} ?: '' " />
		</center>

XssController.java

@Controller
public class XssController {

	@PostMapping("/home")
	public String home(@RequestParam(name="string", required=false, defaultValue="World") String name, Model model) {
		model.addAttribute("xss", name);
		return "index";
	}
}