Thymleaf ->Error during execution of processor 'org.thymeleaf.spring5.processor.SpringInputGeneralFieldTagProcessor'

Question

I am trying to fetch add-journeyFooOrder view and unable to do(getting view saying - Whitelabel Error Page) so please help me by letting me know what I am doing wrong here and why. Thanks in advance

So when first I hit localhost:8080 then I am able to get index.html from there I click on the link to add order then I should get redirected to add-journeyFoodOrder.html view where I am getting the error(please view controller code that will give more clarity). Error logs are as:

org.thymeleaf.exceptions.TemplateProcessingException: Error during execution of processor 'org.thymeleaf.spring5.processor.SpringInputGeneralFieldTagProcessor' (template: "add-journeyFoodOrder" - line 19, col 29) at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:117) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:918) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:661) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1393) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1138) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1077) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.6.jar:5.3.6] at javax.servlet.http.HttpServlet.service(HttpServlet.java:626) ~[tomcat-embed-core-9.0.45.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.6.jar:5.3.6] at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.45.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.6.jar:5.3.6] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.45.jar:9.0.45] at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na] Caused by: java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'journeyFoodOrder' available as request attribute at org.springframework.web.servlet.support.BindStatus.(BindStatus.java:153) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.springframework.web.servlet.support.RequestContext.getBindStatus(RequestContext.java:903) ~[spring-webmvc-5.3.6.jar:5.3.6] at org.thymeleaf.spring5.context.webmvc.SpringWebMvcThymeleafRequestContext.getBindStatus(SpringWebMvcThymeleafRequestContext.java:227) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.util.FieldUtils.getBindStatusFromParsedExpression(FieldUtils.java:306) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.util.FieldUtils.getBindStatus(FieldUtils.java:253) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.util.FieldUtils.getBindStatus(FieldUtils.java:227) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.processor.AbstractSpringFieldTagProcessor.doProcess(AbstractSpringFieldTagProcessor.java:174) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE]

view add-journeyFoodOrder.html

        <div class="col-md-6">
            <form action="#" th:action="@{/addJourneyFoodOrder}" th:object="${journeyFoodOrder}" method="post">
                <label for="nameOfCenter">Name of Center</label>
                <input type="text" th:field="*{nameOfCenter}" placeholder="Name of Center">
                <span th:if="${#fields.hasErrors('nameOfCenter')}" th:errors="*{nameOfCenter}"></span>
                
                <label for="nameOfGuide">Name of Guide</label>
                <input type="text" th:field="*{nameOfGuide}" placeholder="Name of Guide">
                <span th:if="${#fields.hasErrors('nameOfGuide')}" th:errors="*{nameOfGuide}"></span>
                
                <label for="headCount">Head count</label>
                <input type="number" th:field="*{headCount}" placeholder="Head count">
                <span th:if="${#fields.hasErrors('headCount')}" th:errors="*{headCount}"></span>
                
                <label for="dateOfJourney">Mobile No Of Guide</label>
                <input type="text" th:field="*{contactNoOfGuide}" placeholder="Mobile No Of Guide">
                <span th:if="${#fields.hasErrors('contactNoOfGuide')}" th:errors="*{contactNoOfGuide}"></span>
                
                <label for="dateOfDeparture">Date of departure</label>
                <input type="text" th:field="*{dateOfDeparture}" placeholder="Date Of departure">
                <span th:if="${#fields.hasErrors('dateOfDeparture')}" th:errors="*{dateOfDeparture}"></span>
                
                <label for="mealRetrievalTime">Meal retrieval time</label>
                <input type="text" th:field="*{mealRetrievalTime}" placeholder="Mobile No Of Guide">
                <span th:if="${#fields.hasErrors('mealRetrievalTime')}" th:errors="*{mealRetrievalTime}"></span>
                
                <input type="submit" value="Add Order">   
            </form>
        </div>

JourneyFoodOrderController class

@Controller
public class JourneyFoodOrderController {
    
    private final JourneyFoodOrderRepository journeyFoodOrderRepository;

    @Autowired
    public JourneyFoodOrderController(JourneyFoodOrderRepository journeyFoodOrderRepository) {
        // TODO Auto-generated constructor stub
        this.journeyFoodOrderRepository = journeyFoodOrderRepository;
    }
    
    @GetMapping("/signup")
    public String showSignUpForm(JourneyFoodOrderRepository journeyFoodOrderRepository) {
        return "add-journeyFoodOrder";
    }
    
    @PostMapping("/addJourneyFoodOrder")
    public String addJourneyFoodOrder(@Valid @ModelAttribute(value="journeyFoodOrder") JourneyFoodOrder journeyFoodOrder, BindingResult result, Model model) {
        if (result.hasErrors()) {
            return "add-journeyFoodOrder";
        }
        model.addAttribute("journeyFoodOrder", journeyFoodOrder);
        journeyFoodOrderRepository.save(journeyFoodOrder);
        return "redirect:/index";
    }
    
    @GetMapping("/index")
    public String showJourneyFoodOrderList(Model model) {
        model.addAttribute("journeyFoodOrders", journeyFoodOrderRepository.findAll());
        return "index";
    }
}

POJO is

@Entity
public class JourneyFoodOrder{
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    @Override
    public String toString() {
        return "JourneyFoodOrder [id=" + id + ", nameOfCenter=" + nameOfCenter + ", nameOfGuide=" + nameOfGuide
                + ", headCount=" + headCount + ", contactNoOfGuide=" + contactNoOfGuide + ", dateOfDeparture="
                + dateOfDeparture + ", mealRetrievalTime=" + mealRetrievalTime + "]";
    }

    @NotBlank(message = "Name Of Center is mandatory")
    private String nameOfCenter;

    @NotBlank(message = "Name Of Guide is mandatory")
    private String nameOfGuide;
    
    @NotBlank(message = "Head Count is mandatory")
    private int headCount;
    
    @NotBlank(message = "Mobile No Of Guide is mandatory")
    private String contactNoOfGuide;
    
    @NotBlank(message = "Date of Journey is mandatory")
    private Date dateOfDeparture;
    
    @NotBlank(message = "Journey meal retrival date and time is mandatory")
    private Date mealRetrievalTime;

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getNameOfCenter() {
        return nameOfCenter;
    }

    public void setNameOfCenter(String nameOfCenter) {
        this.nameOfCenter = nameOfCenter;
    }

    public int getHeadCount() {
        return headCount;
    }

    public void setHeadCount(int headCount) {
        this.headCount = headCount;
    }

    public String getNameOfGuide() {
        return nameOfGuide;
    }

    public void setNameOfGuide(String nameOfGuide) {
        this.nameOfGuide = nameOfGuide;
    }

    public String getContactNoOfGuide() {
        return contactNoOfGuide;
    }

    public void setContactNoOfGuide(String contactNoOfGuide) {
        this.contactNoOfGuide = contactNoOfGuide;
    }

    public Date getDateOfDeparture() {
        return dateOfDeparture;
    }

    public void setDateOfDeparture(Date dateOfDeparture) {
        this.dateOfDeparture = dateOfDeparture;
    }

    public Date getMealRetrievalTime() {
        return mealRetrievalTime;
    }

    public void setMealRetrievalTime(Date mealRetrievalTime) {
        this.mealRetrievalTime = mealRetrievalTime;
    }
}

Answer 1

You need to add the object which you reference in th:object:

 <form action="#" th:action="@{/addJourneyFoodOrder}" th:object="${journeyFoodOrder}" method="post">

I see that you mention it but there is no adding of this model attribute inside the GET mapping. Add this from your GET mapping and it should work just fine.

LE:

You can also use this variant:

@GetMapping("/signup") public String showSignUpForm(JourneyFoodOrder journeyFoodOrder) { return "add-journeyFoodOrder"; }