redirectattributes argument jest typu modelu lub mapę, ale nie jest przypisane od rzeczywistego modelu

Question

otrzymuję ten wyjątek na dodanie RedirectAttributes w sposobie obchodzenia żądanie kontrolera -

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.web.bind.annotation.support.HandlerMethodInvocationException: Failed to invoke handler method [public java.lang.String com.vc.teacher.controller.AccountController.signUpUser(com.vc.teacher.entities.User,org.springframework.web.servlet.mvc.support.RedirectAttributes)]; nested exception is java.lang.IllegalStateException: Argument [RedirectAttributes] is of type Model or Map but is not assignable from the actual model. You may need to switch newer MVC infrastructure classes to use this argument. 
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978) 
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:754) 
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:847) 
root cause 

org.springframework.web.bind.annotation.support.HandlerMethodInvocationException: Failed to invoke handler method [public java.lang.String com.vc.teacher.controller.AccountController.signUpUser(com.vc.teacher.entities.User,org.springframework.web.servlet.mvc.support.RedirectAttributes)]; nested exception is java.lang.IllegalStateException: Argument [RedirectAttributes] is of type Model or Map but is not assignable from the actual model. You may need to switch newer MVC infrastructure classes to use this argument. 
    org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:182) 
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446) 
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434) 
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) 
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) 
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:754) 
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:847) 
root cause 

java.lang.IllegalStateException: Argument [RedirectAttributes] is of type Model or Map but is not assignable from the actual model. You may need to switch newer MVC infrastructure classes to use this argument. 
    org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:326) 
    org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:172) 
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446) 
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434) 
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) 
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) 
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:754) 
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:847) 

Mój plik fasola-config jest -

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:mvc="http://www.springframework.org/schema/mvc" 
    xsi:schemaLocation=" 
http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
http://www.springframework.org/schema/aop 
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context-3.0.xsd 
http://www.springframework.org/schema/mvc 
http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 


    <mvc:annotation-driven /> 
    <context:component-scan base-package="com.vc.teacher" /> 


    <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> 
     <property name="dataSource" ref="dataSource" /> 
     <property name="annotatedClasses"> 
      <list> 
       <value>com.vc.teacher.entities.User</value> 
      </list> 
     </property> 
     <property name="hibernateProperties"> 
      <props> 
       <prop key="hibernate.dialect">org.hibernate.dialect.HSQLDialect</prop> 
       <prop key="hibernate.current_session_context_class">thread</prop> 
       <prop key="show_sql">true</prop> 
      </props> 
     </property> 
    </bean> 



    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> 
     <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> 
     <property name="url" value="jdbc:mysql://localhost:3306/teacher"></property> 
     <property name="username" value="root"></property> 
     <property name="password" value="root"></property> 
    </bean> 

    <bean id="userDao" class="com.vc.teacher.db.dao.UserDao"> 
     <property name="sessionFactory" ref="sessionFactory"></property> 
    </bean> 


</beans> 

My Kontroler jest -

package com.vc.teacher.controller; 

import org.springframework.context.ApplicationContext; 
import org.springframework.context.support.ClassPathXmlApplicationContext; 
import org.springframework.stereotype.Controller; 
import org.springframework.ui.Model; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 
import org.springframework.web.bind.annotation.RequestParam; 
import org.springframework.web.servlet.ModelAndView; 
import org.springframework.web.servlet.mvc.support.RedirectAttributes; 

import com.vc.teacher.db.dao.UserDao; 
import com.vc.teacher.entities.User; 

@Controller 
public class AccountController { 

    @RequestMapping("/login") 
    public ModelAndView loginUser(@RequestParam("email") String email, 
      @RequestParam("password") String password) { 
     ApplicationContext context = new ClassPathXmlApplicationContext(
       "applicationContext.xml"); 
     User user = ((UserDao) context.getBean("userDao")).checkCreditionals(
       email, password); 
     if (user != null) 
      return new ModelAndView("jsp/result", "message", 
        "successfully login with user = " + email); 
     else 
      return new ModelAndView("jsp/index", "message", "invalid login"); 
    } 

    @RequestMapping("/signUp") 
    public String initilize(Model model) { 
     model.addAttribute(new User()); 
     return "jsp/signup"; 
    } 

    @RequestMapping(method=RequestMethod.POST,value="/register") 
    public String signUpUser(User user,RedirectAttributes attributes) { 
     boolean result = false; 

     ApplicationContext context = new ClassPathXmlApplicationContext(
       "applicationContext.xml"); 
     result = ((UserDao)context.getBean("userDao")).registerUser(user); 



     if (result == true){ 
      attributes.addFlashAttribute("message", 
        "You are ready to go now !"); 
      return "redirect:/signUp"; 
     } else{ 
      attributes.addFlashAttribute("message", 
        "Something went wrong"); 
       return "redirect:/signUp"; 
      } 


    } 
} 

Mój plik jest wiosna-servlet.xml -

<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" 
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xsi:schemaLocation=" 
     http://www.springframework.org/schema/beans 
     http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
     http://www.springframework.org/schema/context 
     http://www.springframework.org/schema/context/spring-context-4.0.xsd 
     http://www.springframework.org/schema/tx 
     http://www.springframework.org/schema/tx/spring-tx-4.0.xsd 
     http://www.springframework.org/schema/aop 
     http://www.springframework.org/schema/aop/spring-aop-4.0.xsd"> 

<context:component-scan base-package="com.vc.teacher.controller" /> 

<!-- Configuration defining views files --> 

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
     <property name="prefix"> 
      <value>/</value> 
     </property> 
     <property name="suffix"> 
      <value>.jsp</value> 
     </property> 
</bean> 

</beans> 

Chcę dodać atrybuty w żądaniu przekierowania. Do tego używam klasy RedirectAttributes. Ale po dodaniu obiektu do mojego parametru metody moja metoda nie jest wywoływana. Używam sprężyny 4.1.6.

Answer 1

Move

<mvc:annotation-driven /> 

do konfiguracji kontekstu serwletu. Ponieważ jest nieobecny, Spring DispatcherServlet używa domyślnej konfiguracji, która używa wycofanego AnnotationMethodHandlerAdapter zamiast bardziej wyrafinowanego RequestMappingHandlerAdapter.

Również

<context:component-scan base-package="com.vc.teacher" /> 

jest rozszerzeniem

<context:component-scan base-package="com.vc.teacher.controller" /> 

Więc trzeba będzie duplikatów definicje dla wszelkich ziaren fasoli pod com.vc.teacher.controller. Napraw to, odróżniając skany komponentów.