Spring 4.1.1 RELEASE and @ResponseBody return HTTP 406

Maven pom.xml:

    <dependency>        <groupId>com.fasterxml.jackson.core</groupId>        <artifactId>jackson-core</artifactId>        <version>2.4.3</version>    </dependency>    <dependency>        <groupId>com.fasterxml.jackson.core</groupId>        <artifactId>jackson-databind</artifactId>        <version>2.4.3</version>    </dependency>

and spring mvc config file (eg:spring-mvc.xml)

<mvc:annotation-driven>    <mvc:message-converters>        <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>    </mvc:message-converters></mvc:annotation-driven>

Got it working after removing Jackson 1.* replacing with the 2.4.4 (JAXRS), which will import all the other dependencies, jackson-core, jackson-databind and jackson-annotations.

Removed

<dependency>    <groupId>org.codehaus.jackson</groupId>    <artifactId>jackson-core-asl</artifactId>    <version>1.9.13</version></dependency><dependency>    <groupId>org.codehaus.jackson</groupId>    <artifactId>jackson-mapper-asl</artifactId>    <version>1.9.13</version></dependency>

Added

<dependency>    <groupId>com.fasterxml.jackson.jaxrs</groupId>    <artifactId>jackson-jaxrs-base</artifactId>    <version>2.4.4</version></dependency>

http://www.codingpedia.org/ama/jquery-ui-autocomplete-not-working-in-spring-4-1/

and in the servlet xml

<mvc:annotation-driven  content-negotiation-manager="contentNegotiationManager" /><bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">     <property name="favorPathExtension" value="false" />     <property name="favorParameter" value="true" />     <property name="mediaTypes" >          <value>               json=application/json               xml=application/xml          </value>     </property></bean>

if the jackson annotate is imported in the class files, it should also be replaced

Removed

import org.codehaus.jackson.annotate.JsonIgnoreProperties

Added

import com.fasterxml.jackson.annotation.JsonIgnoreProperties

I was struggling with similar issue migrating from 3.2 to spring 4.2.Was getting

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalArgumentException: No converter found for return value of type:

posting it here so people can find it by exception name :) It took me half a day to find this article. Thanks @Vito and @Aias

Combination of both previous answers work as well, if you do not want register custom contentNegotiationManager you can do following:

remove all jackson dependencies from

pom.xml

and use latest one

<dependency>    <groupId>com.fasterxml.jackson.jaxrs</groupId>    <artifactId>jackson-jaxrs-base</artifactId>    <version>2.6.1</version></dependency>

servlet.xml

<mvc:annotation-driven>    <mvc:message-converters>        <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>    </mvc:message-converters></mvc:annotation-driven>