Spring MVC Returning HTTP 406 Response

Question

I want to Return a JSON Response from the controller. The Flow goes like this.

<dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>9.2-1003-jdbc4</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.25</version>
        </dependency>     
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>
                <dependency>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring-webmvc</artifactId>
                        <version>4.1.0.RELEASE</version>
                </dependency>
                <dependency>
                        <groupId>org.hibernate</groupId>
                        <artifactId>hibernate-core</artifactId>
                        <version>3.6.0.CR1</version>
               </dependency>
               <dependency>
                        <groupId>org.hibernate</groupId>
                        <artifactId>hibernate-entitymanager</artifactId>
                        <version>4.3.1.Final</version>
               </dependency>
               <dependency>
                        <groupId>junit</groupId>
                        <artifactId>junit</artifactId>
                        <version>4.4</version>
              </dependency>
              <dependency>
                        <groupId>org.codehaus.jackson</groupId>
                        <artifactId>jackson-mapper-asl</artifactId>
                        <version>1.8.5</version>
                        <scope>compile</scope>
              </dependency>
              <dependency>
                        <groupId>org.codehaus.jackson</groupId>
                        <artifactId>jackson-core-asl</artifactId>
                        <version>1.8.5</version>
                        <scope>compile</scope>
              </dependency>

Is my dependency tree.

@XmlRootElement
public class ResponseUser {
    private String contact_id;
    private String user_key;

    public String getContact_id() {
        return contact_id;
    }

    public void setContact_id(String contact_id) {
        this.contact_id = contact_id;
    }

    public String getUser_key() {
        return user_key;
    }

    public void setUser_key(String user_key) {
        this.user_key = user_key;
    }

    public String toString()
    {
      return "Contact_id"+":"+this.contact_id +","+"User_key"+":"+this.user_key;
    }

}

Is my pojo class.

@RequestMapping(value="/user",method=RequestMethod.POST,produces="application/json")
    public  @ResponseBody ResponseUser getUser(HttpServletRequest request,HttpServletResponse response)
    {
       ResponseUser user=new ResponseUser();
       user.setContact_id("sjlfjsld");
       user.setUser_key("skdjflsjdfl");
       System.out.println(user);
       return user;
    }

Is my controller.

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

    <context:component-scan base-package="org.rwind.router" />

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/Views/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
        <context:annotation-config />
        <mvc:annotation-driven>
  <mvc:message-converters>
    <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
  </mvc:message-converters>
</mvc:annotation-driven>

</beans>

Is my Dispactcher-servlet.xml

<web-app version="3.0"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="
    http://www.springframework.org/schema/beans     
    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd"
         metadata-complete="false">

    <display-name>Softforge-api</display-name>

    <servlet>
        <servlet-name>api</servlet-name>
        <servlet-class>
                       org.springframework.web.servlet.DispatcherServlet
                </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>api</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/api-servlet.xml</param-value>
    </context-param>

    <listener>
        <listener-class>
             org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>


</web-app>

Is my web.xml file.

I don't know where i am doing wrong. But i am getting 406 Error. Guys please tell were i have to change.

I think Spring uses newer version of Jackson (fasterxml, not the codehaus one). You should replace your dependencies. Btw. how are you calling your service? From browser, command line or some other application? — Pavel Horal
– Pavel Horal, Commented Jan 25, 2015 at 11:51

M. Deinum · Accepted Answer · 2015-01-25 13:17:10Z

A couple of things.

You are mixing versions of hibernate
You have Jackson 1 (codehaus) as a dependency but explicitly configure Jackson 2
You are loading all of your beans twice.
Configuration improvements

Mixing Hibernate Versions

<dependency>
     <groupId>org.hibernate</groupId>
     <artifactId>hibernate-core</artifactId>
     <version>3.6.0.CR1</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>4.3.1.Final</version>
</dependency>

In your dependency list you are mixing versions 3.6.0.CR1 (which isn't even a final release) and 4.3.1.Final. mixing jars of a framework is never a wise thing to do. You should be able to remove the dependency for hibernate-core as the hibernate-entitymanager has a dependency on it.

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>4.3.1.Final</version>
</dependency>

Jackson1 as a dependency

  <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.8.5</version>
        <scope>compile</scope>
  </dependency>
  <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-core-asl</artifactId>
        <version>1.8.5</version>
        <scope>compile</scope>
  </dependency>

The dependencies you have in your dependency list are for Jackson 1, however you explicitly configure the MappingJackson2HttpMessageConverter which uses Jackson 2 not Jackson 1. Fix your dependencies for this

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.3.5</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.3.5</version>
</dependency>

You can also remove the explicit configuration of the MappingJackson2HttpMessageConverter as that will be automatically added when you are using <mvc:annotation-driven />, this will save you a couple of lines of configuration.

<mvc:annotation-driven />

Loading beans twice

In your web.xml you have defined a DispatcherServlet named api which will, by default, will load the /WEB-INF/api-servlet.xml. You are again loading this configuration with the ContextLoaderListener. This duplicates all your beans and consumes additional resources. For now you can remove the ContextLoaderListener.

<?xml version="1.0" encoding="UTF-8"?> 
<web-app
    version="3.0"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

    <display-name>Softforge-api</display-name>

    <servlet>
        <servlet-name>api</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>api</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

Configuration enhancements

It is recommended to use the version less XSD files instead of the versioned ones. So use spring-beans.xsd instead of spring-beans-3.0.xsd, this will ensure you are always using the most recent available version.

<context:annotation-config /> is already implied by <context:component-scan /> you can remove it.

The MappingJackson2HttpMessageConverter is automatically configured by <mvc:annotation-driven /> when it detects Jackson2 on the classpath, you can remove the explicit configuration.

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

    <context:component-scan base-package="org.rwind.router" />
    <mvc:annotation-driven />

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

</beans>

then could you accept this answer? it's quite frustrating to read everything when the problem is already solved.

Collectives™ on Stack Overflow

Spring MVC Returning HTTP 406 Response

1 Answer 1

Mixing Hibernate Versions

Jackson1 as a dependency

Loading beans twice

Configuration enhancements

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Mixing Hibernate Versions

Jackson1 as a dependency

Loading beans twice

Configuration enhancements

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related