Spring's Json not being resolved with appropriate response

Question

I\'ve tried to have a controller in Spring return a JSON response to no avail using the Jackson classes as recommended with 3.0. I\'ve got the jackson jar files(jackson-core

Answer 1

Also, make sure that you add two jackson related jar files.

• jackson-core-asl-1.9.8.jar
• jackson-mapper-asl-1.9.8.jar

The version can be different.

Answer 2

I know that this is an old thread, but maybe someone will encounter the same problem as me. I got that exception when migrating an application from Spring 4.0.3.RELEASE to Spring 4.1.0.RELEASE. In my case updating Jackson from 1.9.x to 2.4.x did the trick.

Answer 3

Sending the Accept: application/xml header does not work. But sending Accept: application/json actually works, and jackson mapper kicks in. I got rid of my 406 and got my serialized java object in json format with no more config than @ResponseBody and return new MyObject() :) Thanks skaffman for this information, and thanks Bozho for the working header value :D

Answer 4

Get rid of all Jackson beans, and of the json mapping in the negotiating resolver. the mvc:annotation-driven should configure everything you need for the Jackson serialization to work.

Answer 5

May be my answer is a bit late, but it may help some one else visiting this question.

I got my problem resolved by adding

 hibernate-validator-4.0.2 

and gave me another exception (class not found exception: org.slf4j.LoggerFactory) which i resolved by adding

slf4j-api-1.5.6.jar

I hope it will help someone.

Answer 6

I have got same exception when migrating from spring 3.x to spring 4.x.

I solved it with updating jackson dependencies from

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

to

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.5.1</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.5.1</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.5.1</version>
    </dependency>

Nothing else was needed for me.