@Controller
@RequestMapping(value = "/query")
public class QueryController extends AbstractController {

    public QueryController() {
        ...
    }

    @RequestMapping(method = RequestMethod.GET)
    @ResponseBody
    public SearchResult query(
        return new PlainOldJavaObject();
    }
}

<mvc:annotation-driven/>

<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-core-asl</artifactId>
    <version>${jackson.version}</version>
</dependency>
<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-asl</artifactId>
    <version>${jackson.version}</version>
</dependency>

$ mvn ant:ant

<pathelement location="${my.repo.local}/org/codehaus/jackson/jackson-core-asl/1.9.7/jackson-core-asl-1.9.7.jar"/>
<pathelement location="${my.repo.local}/org/codehaus/jackson/jackson-mapper-asl/1.9.7/jackson-mapper-asl-1.9.7.jar"/>

<copy file="${my.repo.local}/org/codehaus/jackson/jackson-core-asl/1.9.7/jackson-core-asl-1.9.7.jar"
    todir="${my.build.dir}/${my.build.finalName}/WEB-INF/lib"/>
<copy file="${my.repo.local}/org/codehaus/jackson/jackson-mapper-asl/1.9.7/jackson-mapper-asl-1.9.7.jar"
    todir="${my.build.dir}/${my.build.finalName}/WEB-INF/lib"/>