Neither BindingResult nor plain target object for bean name

Question

I've been tinkering with Thymeleaf recently a little bit and I'm trying to setup a basic registration form. I have set up my @GetMapping and @Postmapping controller handlers.

Controller:

@GetMapping("/registration")
public String userResponseEntity(Model model) {
    UserModel userModel = new UserModel();
    model.addAttribute("userModel", userModel);
    return "registration";
}

@PostMapping("/registration")
public String userRegistration(@Valid @ModelAttribute("userModel") UserModel user, BindingResult result){
    UserModel userToSubmit = new UserModel();
    userToSubmit.setUsername(user.getUsername());
    userToSubmit.setFirstName(user.getFirstName());
    userToSubmit.setLastName(user.getLastName());

    try {
        User userReturned = userService.saveUser(userToSubmit).orElseThrow(
                () -> new UserException(HttpStatus.BAD_REQUEST, "Unable to register user with given inputs"));
    }catch (UserException e){
        if(result.hasErrors()) {
            logger.error("Could not save the given user to the database");
            return "registration?error=true";
        }
    }
    logger.info(String.format("User: %s has been registered successfully", userToSubmit.getUsername()));
    return "registration?user-created=true";
}

The error I have been getting occurs when I click on a button that is not shown in the controller to minimizing purposes, but has the following href from a button located at /login

<p>Not a member? <a th:href="@{/registration}" >Register</a></p>

After I click on that I am not even redirected to /registration, but instead prompted with the following error:

2022-12-21T19:07:11.241-06:00 ERROR 2109 --- [nio-8080-exec-4] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.thymeleaf.exceptions.TemplateProcessingException: Error during execution of processor 'org.thymeleaf.spring6.processor.SpringInputGeneralFieldTagProcessor' (template: "registration" - line 22, col 94)] with root cause

java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'userDTO' available as request attribute
    at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:153) ~[spring-webmvc-6.0.2.jar:6.0.2]

The Thymeleaf template:

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
    <title>Login</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
          integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh"
          crossorigin="anonymous"/>
</head>
    <body>
        <div class="container-fluid text-left">
            <div class="row justify-content-md-center mt-3">
                <div class="col-4">
                    <h3 class="fw-normal mb-3 pb-3 text-center" style="letter-spacing: 1px;">Register Account</h3>
                    <div th:if="${param.error}">//fields has errors
                        <p class="text-danger">[[${session.SPRING_SECURITY_LAST_EXCEPTION.message}]]</p>
                    </div>
                    <form th:action="@{/registration}" method="post" th:object="${userModel}">
                        <div class="form-group">
                            <label for="exampleInputEmail1" class="text-left">Email address</label>
                            <input type="email" class="form-control" id="exampleInputEmail1" th:field="*{username}" aria-describedby="emailHelp" placeholder="Enter email">
                        </div>
                        <div class="form-group">
                            <label for="InputPassword" class="text-left">Password</label>
                            <input type="password" class="form-control" th:field="*{password}" id="InputPassword" placeholder="Password">
                            <label for="ReenterPassword" class="text-left">Re-enter Password</label>
                            <input type="password" class="form-control" th:field="*{password}" id="ReenterPassword" placeholder="Enter password again">
                        </div>
                        <div class="form-group form-check">
                            <input type="checkbox" class="form-check-input" id="exampleCheck1">
                            <label class="form-check-label" for="exampleCheck1">Check me out</label>
                        </div>
                        <button type="submit" class="btn btn-primary">Submit</button>
                    </form>
                </div>
            </div>
        </div>
    </body>
</html>

Does this answer your question? [Neither BindingResult nor plain target object for bean name available as request attribute](https://stackoverflow.com/questions/8781558/neither-bindingresult-nor-plain-target-object-for-bean-name-available-as-request) — andrewJames, Dec 22 '22 at 13:51

Neither BindingResult nor plain target object for bean name

0 Answers0