Jackson ignoring annotation on dependency class - spring

Question

I'm trying to serialise a class that belongs to project B from project A using jackson.
Since this class has some funny method names I needed to use MixIn annotation to make it serialisable from project A.
That worked well, but later I was asked to make this change directly into project B, since we want many other projects to be able to serialise/deserialise this class.
I ended up putting annotation directly into the class, so my class became
public class Dog {
public Dog(#JsonProperty("breed") String colour) {
this.colour = colour;
}
#JsonProperty("breed")
private String colour;
}
This is just an example and it shows what the class looks like. The point here is, when I serialise/deserialise the class inside project B the annotations are picked up and everything works as expected, whilst when I serialise/deserialise inside project A (that has project B as a dependency) the annotations are ignored. Does anybody know why this is happening?

Answer 1

The first thing to do is to upgrade jars.
New Maven dependencies are:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.7.2</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.7.3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.7.2</version>
<type>jar</type>
</dependency>
You can make annotation work with usings different version but it it too much overhead and do not brings any advantages.
see:
org.codehaus.jackson versus com.fasterxml.jackson.core
http://wiki.fasterxml.com/JacksonUpgradeFrom19To20

Answer 2

The problem was in the jackson version.
Project B was using org.codehaus.jackson annotation, whilst project A was using com.fasterxml.jackson
fasterxml.jackson ignores codehaus annotation.