Content type 'application/json' not supported in Spring MVC and jackson

Question

I'm getting an error (Handler execution resulted in exception: Content type 'application/json' not supported) when trying to receive a post request using Spring MVC.

My Json, just for testing, is pretty simple:

{ "test": "abc123" }

My pojo class:

public class Request {

    String test;

    public String getTest() {
        return test;
    }

    public void setTest(String test) {
        this.test = test;
    }

}

And my controller:

@RequestMapping(value = "/testing", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
private void testing(@RequestBody Request body, @RequestHeader HttpHeaders headers, HttpServletRequest httpRequest) {
    System.out.println(body.getTest());
}

In my pom.xml, I added:

<dependencies>
    ...
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.7.2</version>
    </dependency>
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.8.5</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.dataformat</groupId>
        <artifactId>jackson-dataformat-xml</artifactId>
        <version>2.4.3</version>
    </dependency>
</dependencies>

I think that something is wrong in json deserialization, but I cannot find it.

Any help is welcome. Thanks.

Answer 1

In my case the problem was an addition to a dto of a property which having a type that was error prone for Jackson, it was of type JsonObject. Jackson was unable to deserialize other objects because of that addition.
The exception message is completely inaccurate!