问题描述
我的登录表单是:
<form th:action="@{/login}" method="post">
<div class="form-group">
<input type="text" name="username" id="username"
class="form-control" th:placeholder="Email" autofocus required/>
</div>
<div class="form-group">
<input type="password" name="password" id="password"
class="form-control" th:placeholder="Password" required/>
</div>
<input type="submit" class="btn btn-lg btn-primary btn-block"
th:value="Login"/>
</form>
我的控制器是:
@Controller
public class LoginController {
@GetMapping("/login")
public String login(@RequestParam(value = "error",required = false) String error,Model model,Principal principal) {
if (principal != null) {
return "redirect:/ccursos";
}
if (error != null) {
model.addAttribute("msg","Error al iniciar sesión: Nombre de usuario o contraseña incorrecta,por favor vuelva
a intentarlo!");
}
return "login";
}
@GetMapping("/logout")
public String logoutPage (HttpServletRequest request,HttpServletResponse response) {
Authentication auth = SecurityContextHolder.getContext().getAuthentication();
if (auth != null){
new SecurityContextlogoutHandler().logout(request,response,auth);
}
return "redirect:/login";
}
}
我试图使用@RequestParam 来获取变量的值,但它说变量电子邮件不存在。我知道这一点,所以任何帮助将不胜感激。
这是我想要做的:
@GetMapping("/login")
public String login(@RequestParam(value = "error",@RequestParam("Email") String email,Principal principal) {
if (principal != null) {
return "redirect:/ppeliculas";
}
if (error != null) {
model.addAttribute("msg",por favor vuelva
a intentarlo!");
}
return "login";
}
解决方法
您正在尝试通过 POST
方法发送表单,但您的控制器仅针对 @GetMapping
定义。更改或添加 @PostMapping
,然后添加 @RequestBody Model model
(如果 class Model
描述您的表单),一切都应该有效。
如果您是从编程开始,请阅读有关 HTTP 的一些内容:https://www.w3schools.com/tags/ref_httpmethods.asp,在本例中有关 @RequestBody
:https://www.baeldung.com/spring-request-response-body