Spring framework No adapter for handler - spring-mvc

Question

I am upgrading Spring framework from very old version to 5.3 - I made updated to controller and configuration file. I am getting "javax.servlet.ServletException: No adapter for handler for Controller" error.
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:oxm="http://www.springframework.org/schema/oxm"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/oxm
http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd">
<context:component-scan base-package="abc.controller,abc.bean,abc.bean.command,abc.validator" />
<context:annotation-config />
<mvc:annotation-driven />
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
<!-- Controllers -->
<bean id="uploadFormController" class="abc.controller.UploadFormController">
<property name="mailSender"><ref bean="mailSender"/></property>
<property name="message"><ref bean="uploadConfirmationEmail"/></property>
<property name="submissionDao"><ref bean="submissionDao"/></property>
<property name="providerDao"><ref bean="providerDao"/></property>
</bean>
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="urlMap">
</property>
<property name="interceptors">
<list>
<ref bean="securityInterceptor"/>
</list>
</property>
<property name="mappings">
<props>
<prop key="upload.html">starSiSpreadsheetUploadFormController</prop>
</props>
</property>
</bean>
<bean id="securityInterceptor"
class="abc.interceptor.SecurityInterceptor">
<property name="defaultUser"><value>${abc.defaultUser}</value></property>
</bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass">
<value>org.springframework.web.servlet.view.JstlView</value>
</property>
<property name="prefix"><value>/jsp/</value></property>
<property name="suffix"><value>.jsp</value></property>
</bean>
</beans>`
package abc.controller;
#Controller
#RequestMapping("/upload.html")
public class UploadFormController {
#Autowired
private SpreadsheetUpload bean; //CommandClass
#Autowired
private MailSender mailSender;
#Autowired
private SimpleMailMessage message;
#Autowired
private SubmissionDAO submissionDao;
#Autowired
private ProviderDAO providerDao;
protected String onSubmit(HttpServletRequest request,
HttpServletResponse response, BindException errors)
throws Exception
{
// let's see if there's a provider
if (bean.getProvider() == null)
{
log.info("No provider selected.");
throw new DataEntryException("No provider selected. ");
}
return "redirect:upload.html";
}
protected Map referenceData(HttpServletRequest request) throws Exception
{
// TODO - switch code over to using LDAP queries
HttpSession session = request.getSession();
//Logic goes here..
Map map = new HashMap();
map.put("admin", admin);
return map;
}
}
Could someone take a look and help me on this? I have been trying since last two days and no luck so far. Thank you!

Answer 1

There is nothing wrong in my code. I have another method called "OnSubmit" which is causing the problem.