html表单键盘控制器,在springboot中通过点击按钮将数据从HTML表单发送到控制器

当我输入一个特定的数字并单击submit时,我希望在我的控制器中获得该数字。我试图通过get请求发送数据。

Scan QR Code:

type=file accept="image/*" capture=environment οnchange="openQRCamera(this);" tabindex=-1>

Submit

我的控制器:

@GetMapping(value="/donor/home")

public ModelAndView donorHome(){

ModelAndView modelAndView = new ModelAndView();

Authentication auth = SecurityContextHolder.getContext().getAuthentication();

User user = userService.findUserByUserName(auth.getName());

List restaurant = userService.findUsersByRole(3);

modelAndView.addObject("userName", "Welcome " + user.getUserName() + "/" + user.getFirstName() + " " + user.getLastName() + " (" + user.getEmail() + ")");

modelAndView.addObject("restaurant", restaurant);

modelAndView.setViewName("/donor/donor_home");

return modelAndView;

}

@PostMapping(value = "/registration/donor")

public ModelAndView createNewDonor(@Valid User user, BindingResult bindingResult) {

ModelAndView modelAndView = new ModelAndView();

User userExists = userService.findUserByUserName(user.getUserName());

if (userExists != null) {

bindingResult

.rejectValue("userName", "error.user",

"There is already a user registered with the user name provided");

}

if (bindingResult.hasErrors()) {

modelAndView.setViewName("/donor/donor_registration");

} else {

userService.saveUser(user, "Donor");

modelAndView.addObject("successMessage", "Donor has been registered successfully");

modelAndView.addObject("user", new User());

modelAndView.setViewName("donor/donor_registration");

}

return modelAndView;

}