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Neither BindingResult nor plain target object for bean name 'userProfile' available as request attribute

java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'userProfile' available as request attribute

    at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:141)

    at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:174)

    at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:194)

    at org.springframework.web.servlet.tags.form.LabelTag.autogenerateFor(LabelTag.java:129)

    ...

       

@Controller

public class UserController {

 

    @Autowired

    private UserProfileService userProfileService;

 

    public UserController(){

 

    }

 

    @RequestMapping(value="/add", method=RequestMethod.POST)

    public String registerUser(@ModelAttribute("userProfile") UserProfile userProfile, BindingResult result, Map model){

 

        userProfileService.addUserProfile(userProfile);

 

        return "redirect:/login";

    }

    ...

}

       

@Entity

@Table(name="USER_PROFILE")

public class UserProfile {

    @Id

    @GeneratedValue

    @Column(name = "ID")

    private Long id;

 

    @Column(name = "USERNAME")

    private String userName;

 

    @Column(name = "PASSWORD")

    private String password;

 

    //sets and gets

}

       

<form:form method="post" action="add" commandName="userProfile">

    <table>

        <tr>

            <td><form:label path="userName"><spring:message code="label.username" /></form:label></td>

            <td><form:input path="userName" /></td>

        </tr>

        <tr>

            <td><form:label path="password"><spring:message code="label.password" /></form:label></td>

            <td><form:password path="password" /></td>

        </tr>

        <tr>

            <td><input type="submit" value="<spring:message code="label.adduser" />"></td>

        </tr>

    </table>

</form:form>

       

@RequestMapping("/")

public String home() {

    return "redirect:/index";

}

 

@RequestMapping(value = "/index", method = RequestMethod.GET)

public String createRegisterForm(Map<String, Object> model){

    model.put("userprofile", new UserProfile());

    return "index";

}