Failed to load resource: the server responded with a status of 406 (Not Acceptable)

Question

Based on my previous question, I have upgraded the Spring framework from 3.0.2 to 3.2.0 for the reason mentioned in this question (Spring 3.0.2 causes problems in uploading multiple files as there was a long standing bug).

With the newer version everything works fine exception JSON. While responding, Google chrome shows this error.

Failed to load resource: the server responded with a status of 406 (Not Acceptable)

I have tried to do as specified here in the dispatcher-servlet.xml file like,

<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
  <property name="mediaTypes">
    <map>
      <entry key="atom" value="application/atom+xml"/>
      <entry key="html" value="text/html"/>
      <entry key="json" value="application/json"/>
    </map>
  </property>
  <property name="viewResolvers">
    <list>
      <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
      </bean>
    </list>
  </property>
  <property name="defaultViews">
    <list>
      <bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />
    </list>
  </property>
</bean>

and it ends with the following exception upon saving the xml file.

java.lang.ClassCastException java.lang.String cannot be cast to org.springframework.http.MediaType

---

The full contents of the dispatcher-servelet.xml file is as follows, if someone needs to see.

<?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:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"

       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/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">


    <context:component-scan base-package="controller" />
    <context:component-scan base-package="validatorbeans" />
    <mvc:annotation-driven />




<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
  <property name="mediaTypes">
    <map>
      <entry key="atom" value="application/atom+xml"/>
      <entry key="html" value="text/html"/>
      <entry key="json" value="application/json"/>
    </map>
  </property>
  <property name="viewResolvers">
    <list>
      <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
      </bean>
    </list>
  </property>
  <property name="defaultViews">
    <list>
      <bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />
    </list>
  </property>
</bean>

    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="index.htm">indexController</prop>

            </props>
        </property>
    </bean>

<!--<bean id="viewResolver"
       class="org.springframework.web.servlet.view.InternalResourceViewResolver"
       p:prefix="/WEB-INF/jsp/"
       p:suffix=".jsp" />

       Initially this bean was mentioned like this was given a comment. It is specified as above-->

    <bean name="indexController"
          class="org.springframework.web.servlet.mvc.ParameterizableViewController"
          p:viewName="index" />
</beans>

How to resolve this exception? Google search results of this exception could not bring me to a specific reference.

---

EDIT:

According to this configuration, I have now the following XML mapping.

<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
    <property name="order" value="1" />
    <property name="contentNegotiationManager">
        <bean class="org.springframework.web.accept.ContentNegotiationManager">
            <constructor-arg>
                <bean class="org.springframework.web.accept.PathExtensionContentNegotiationStrategy">
                    <constructor-arg>
                        <map>
                            <entry key="json" value="application/json"/>
                            <entry key="xml" value="application/xml"/>
                            <!--<entry key="html" value="text/html"/>
                            <entry key="atom" value="application/atom+xml"/-->
                        </map>
                    </constructor-arg>
                </bean>
            </constructor-arg>
        </bean>
    </property>


    <property name="defaultViews">
        <list>
            <!-- JSON View -->
            <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />

            <!-- XML View -->
            <bean class="org.springframework.web.servlet.view.xml.MarshallingView">
                <constructor-arg>
                    <bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
                        <property name="packagesToScan">
                            <list>
                                <value>documentLoader.domain</value>
                            </list>
                        </property>
                    </bean>
                </constructor-arg>
            </bean>
        </list>
    </property>
</bean>

---

<bean id="viewResolver"
      class="org.springframework.web.servlet.view.InternalResourceViewResolver"
      p:prefix="/WEB-INF/jsp/"
      p:suffix=".jsp" />

and the ClassCastException disappeared but JSON still doesn't work. I'm still getting the same error,

Failed to load resource: the server responded with a status of 406 (Not Acceptable)

What else is still remaining? There is one jira issue still can be seen.

NOTE: I have Jackson 1.9.8 (its download page) library on the classpath. With Jackson 2.1.1, it doesn't work throwing the following exception at runtime.

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.ContentNegotiatingViewResolver#0' defined in ServletContext resource [/WEB-INF/dispatcher-servlet.xml]: Cannot create inner bean 'org.springframework.web.servlet.view.json.MappingJacksonJsonView#bb314f' of type [org.springframework.web.servlet.view.json.MappingJacksonJsonView] while setting bean property 'defaultViews' with key [0]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.json.MappingJacksonJsonView#bb314f' defined in ServletContext resource [/WEB-INF/dispatcher-servlet.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.web.servlet.view.json.MappingJacksonJsonView]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/codehaus/jackson/map/ObjectMapper

Because Jackson 2.1.1 has the class ObjectMapper in another package - com.fasterxml.jackson.databind.ObjectMapper. What is the way?

Solution 1

The exception occurs when you're trying to set the mediaTypes property to the ContentNegotiatingViewResolver because the value is not a plain string like "text/html" as you thought. It's a different type MediaType

Instead specify something like this.

<bean id="atomXml" class="org.springframework.http.MediaType">
<constructor-arg><value><![CDATA[application/atom+xml]]></value></constructor-arg>
</bean>

and other beans similarly.

---

When you want to set the mediaTypes, inject the beans created above to the ContentNegotiatingViewResolver.

<property name="mediaTypes">
    <map>
      <entry key="atom" value-ref="atomXml"/>
    </map>
</property>

Defining other relevant beans and fixing any syntax issues related to the above configuration are left as an exercise to you.

Solution 2

it is better to reference constants in MediaType class

<constructor-arg>
    <map>
        <entry key="json">
            <util:constant static-field="org.springframework.http.MediaType.APPLICATION_JSON_VALUE" />
        </entry>
        <entry key="xml">
            <util:constant static-field="org.springframework.http.MediaType.APPLICATION_ATOM_XML_VALUE" />
        </entry>
    </map>
</constructor-arg>

you will need to include util schema as well

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">

Solution 3

you should add a reference to ContentNegotiatingViewResolver. Replace

<mvc:annotation-driven />

by

<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager" />

and add the id to the bean definition:

<bean id="contentNegotiationManager"  class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">

Also, you need to update the schema location to 3.2.

xsi:schemaLocation="
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd