I have been up and down the Internet trying to find an answer to my problem, and now I'm coming here. I have a Spring 3.1 MVC application, and I have a JSP that is giving me the following error:
Code:
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'comment' available as request attribute
	org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:141)
	org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:174)
	org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:194)
	org.springframework.web.servlet.tags.form.LabelTag.autogenerateFor(LabelTag.java:129)
	org.springframework.web.servlet.tags.form.LabelTag.resolveFor(LabelTag.java:119)
	org.springframework.web.servlet.tags.form.LabelTag.writeTagContent(LabelTag.java:89)
	org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:102)
	org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:79)
	org.apache.jsp.GuestBook_jsp._jspx_meth_form_005flabel_005f0(GuestBook_jsp.java:270)
	org.apache.jsp.GuestBook_jsp._jspx_meth_form_005fform_005f0(GuestBook_jsp.java:216)
	org.apache.jsp.GuestBook_jsp._jspService(GuestBook_jsp.java:127)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
This is the form in GuestBook.jsp, the offending JSP.
Code:
	<form:form modelAttribute="comment" method="POST" action="/addComment">
		<table>
			<tr>
				<td><form:label path="name">Name:</form:label></td>
				<td><form:input path="name" /></td>
			</tr>
			<tr>
				<td><form:label path="comment">Message:</form:label></td>
				<td><form:textarea path="comment" rows="10" cols="50" /></td>
			</tr>
			<tr>
				<td colspan="2"><input type="submit" value="Submit comment" /></td>
			</tr>
		</table>
	</form:form>
This is CommentController.
Code:
@Controller
public class CommentController {
	@RequestMapping(value = "/GuestBook")
	public ModelAndView comment() {
		return new ModelAndView("comment", "command", new Comment());		
	}
	
	@RequestMapping(value = "/addComment", method = RequestMethod.POST)
	public String addComment(@ModelAttribute Comment comment, BindingResult result) {
		CommentDAO commentDAO = new CommentDAO();
		java.util.Date today = new java.util.Date();
		java.sql.Date date = new java.sql.Date(today.getTime());
		comment.setDate(date);

		if (commentDAO.writeComment(comment) == true) {
			return "redirect:GuestBook.jsp";
		}
		
		return "Oops";			
	}
}
This is web.xml.
Code:
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
	xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	<display-name>Granada High School Class of 1986</display-name>
    <servlet>
        <servlet-name>ghs1986</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>ghs1986</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

	<listener>
		<listener-class>com.configuration.ConfigurationListener</listener-class>
	</listener>
	<listener>
    	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	
	<welcome-file-list>
		<welcome-file>home.jsp</welcome-file>
	</welcome-file-list>
</web-app>
This is ghs1986-servlet.xml.
Code:
<?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:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
				http://www.springframework.org/schema/beans/spring-beans-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-3.0.xsd">

	<mvc:annotation-driven />

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

	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/" />
		<property name="suffix" value=".jsp" />
	</bean>
	
</beans>
This is applicationContext.xml
Code:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>

  <bean id="comment" class="com.model.Comment" />

</beans>