how to use spring data neo4j search for fulltext

I am learning spring data neo4j and spring .I want to search fulltext,for example I have three Movies (sky,sky1,sky2),when i search "sky",it return sky,sky1,sky2.firt i use repository below

package com.oberon.fm.repository;
@Repository
     public interface MovieRepository extends GraphRepository<Movie> {
     Movie findById(String id);
     Page<Movie> findByTitleLike(String title, Pageable page);
}

My controller below

@RequestMapping(value = "/movies", method = RequestMethod.GET, headers = "Accept=text/html")
public String findMovies(Model model, @RequestParam("q") String query) {
    log.debug("1");
    if (query != null && !query.isEmpty()) {
        Page<Movie> movies =movieRepository.findByTitleLike(query, new PageRequest(0, 20));
        model.addAttribute("movies", movies.getContent());
    } else {
        model.addAttribute("movies", Collections.emptyList());
    }
    model.addAttribute("query", query);
    addUser(model);
    return "/movies/list";
}

these does not work well,i think somewhere might be wrong,but i dont know,if you have any idea,tell me thanks! by the way,it throw exception java.lang.NullPointerException.