Thymleaf controller request mapping binging issue - spring-boot

Question

I am new to thymleaf and at first i used simple requestmapping and thymleaf th:action and th:object to bind controller methods. But after adding class level requestmapping i cannot view my html.
below is my controller class code where i redirect to login page.
#Controller
#RequestMapping("/project")
public class MyController {
#RequestMapping(value = {"/"}, method = RequestMethod.GET)
public String login(Model model) {
model.addAttribute("mylogin", new Credentials());
return "login";
}
}
below is my html page.
<form class="user" th:action="#{/project/login}" th:object="${mylogin}" method="POST">
<div class="form-group">
<input type="email" id="user_name" name="username"
class="form-control form-control-user"
placeholder="Enter Email Address..." />
</div>
<div class="form-group">
<input type="password" id="password" name="password"
class="form-control form-control-user"
placeholder="Password" />
</div>
<button class="btn btn-primary btn-user btn-block"
name="Submit" value="Login" type="Submit" th:text="Login"></button>
</form>
after adding #RequestMapping("/project") in class i cannot fetch html. If i remove this #RequestMapping("/project") and change th:action="#{/project/login}" to th:action="#{/login}" my code works.
What can be the problem for such issue?

Answer 1

Change This Request mapping this way /login with class level requestmapping and try again:
#RequestMapping(value = {"/login"}, method = RequestMethod.GET)
public String login(Model model) {
model.addAttribute("mylogin", new Credentials());
return "login";
}
OR
#GetMapping("/login")
public String login(Model model) {
model.addAttribute("mylogin", new Credentials());
return "login";
}