Question

我有一个登录表单，我想显示登录用户的名称。我想在Spring MVC中使用会话，但它不起作用

这是UsersController

@PostMapping("/room/saveRegister")
public String saveRegister(@Valid Users users, BindingResult result, RedirectAttributes redirect) {
    if (result.hasErrors()) {
        return "register";
    }
    usersService.save(users);
    redirect.addFlashAttribute("success", "Saved user successfully!");
    return "redirect:/room";
}

@GetMapping("/room/login")
public String login(Model model) {
    model.addAttribute("users", new Users());
    return "login";
}
@PostMapping("/room/loginRoom")
public String login(@ModelAttribute("users") Users user, ModelMap modelMap, RedirectAttributes redirect,HttpSession session) {
if(usersService.findByEmailAndPass(user.getEmail(),user.getPass()) != null) {
    session.setAttribute("name",user.getName());
    return "redirect:/room";

}else {
modelMap.put("error", "Email or Password is not correct. Pleased Try Again");

return "login" ;
}
}

在文件.html中，我添加了

    <li  ><a href="account.html"><span th:text ="${session.name}"></span></a></li>

但是当我登录成功时。不显示用户名。会话不起作用。我不知道为什么

Answer 1

您需要使用${sessionScope.name}代替${session.name}

可以在 Examples of EL Expressions

找到更多详细信息

Answer 2

请参阅

Using Http Session With Spring Based Web Applications

Spring：如何在Spring MVC中使用session

2 个答案: