spring boot - JpaRepository 什么都不返回，而控制台中的SQL查询是正确的，这是什么问题？

要在其中卸载的根控制器

import com.chvalov.library.Repository.AuthorRepository;
import com.chvalov.library.Repository.BookRepository;
import lombok.extern.java.Log;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Controller
@Log
public class RedirectController {

    @Autowired
    private AuthorRepository authorRepository;

    @Autowired
    private BookRepository bookRepository;

    @RequestMapping(value = "", method = RequestMethod.GET)
    public String baseUrlRedirect(HttpServletRequest request, HttpServletResponse httpServletResponse) {

        // Пустота
        System.out.println(bookRepository.findByNameContainingIgnoreCaseOrAuthorFioContainingIgnoreCaseOrderByName("а","па"));
        System.out.println(authorRepository.findByFioContainingIgnoreCaseOrderByFio("ча"));

        // Работает
        System.out.println(authorRepository.findOne(25L));
        System.out.println(authorRepository.findAll());

        System.out.println(bookRepository.findOne(20L));
        System.out.println(bookRepository.findAll());
        return "ok";
    }
}

道：

AuthDao.java

import com.chvalov.library.Entity.Author;

// описывает специфичное поведение для работы с авторами
public interface AuthorDao extends GeneralDAO<Author>{

}

GeneralDao.java

import java.util.List;

// общее поведения для всех DAO объектов
public interface GeneralDAO<T>{

    List<T> getAll();
    List<T> search(String... searchString);

    T get(long id); // получение объекта по id
    T save(T obj);// save - обновляет или добавляет объект (один метод на 2 действия)
    void delete(T object);

}

作者Repository.java

import com.chvalov.library.Entity.Author;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository // специальный Spring bean, который помечает интерфейс как Repository
public interface AuthorRepository extends JpaRepository<Author, Long> {// JpaRepository - содержит CRUD функционал + постраничность

    // на основании имени метода будет построен Hibernate запрос
    List<Author> findByFioContainingIgnoreCaseOrderByFio(String fio);
}

在做的时候：

authorRepository.findByFioContainingIgnoreCaseOrderByFio("ча");

返回空数据，控制台中的SQL查询本身是正确的，数据库中有记录并且正常被Navicat & phpMyAdmin中的同一个查询选中

此代码返回所需的数据：

authorRepository.findOne(25L);
authorRepository.findAll();

什么问题，为什么返回空数据？

UPD： MySQL 日志：

2018-01-20T04:02:37.615823Z   754 Query /* select generatedAlias0 from Author as generatedAlias0 where upper(generatedAlias0.fio) like upper(:param0) order by generatedAlias0.fio asc */ select author0_.id as id1_0_, author0_.birthday as birthday2_0_, author0_.fio as fio3_0_ from library.author author0_ where upper(author0_.fio) like upper('%??%') order by author0_.fio asc
2018-01-20T04:02:37.616909Z   754 Query set session transaction read only
2018-01-20T04:02:37.617245Z   754 Query SET autocommit=0
2018-01-20T04:02:37.618412Z   754 Query select author0_.id as id1_0_0_, author0_.birthday as birthday2_0_0_, author0_.fio as fio3_0_0_ from library.author author0_ where author0_.id=25
2018-01-20T04:02:37.621222Z   754 Query commit
2018-01-20T04:02:37.635841Z   754 Query SET autocommit=1
2018-01-20T04:02:37.638517Z   754 Query select @@session.tx_read_only
2018-01-20T04:02:37.639451Z   754 Query set session transaction read write
2018-01-20T04:02:37.641171Z   754 Query /* select generatedAlias0 from Author as generatedAlias0 where upper(generatedAlias0.fio) like upper(:param0) order by generatedAlias0.fio asc */ select author0_.id as id1_0_, author0_.birthday as birthday2_0_, author0_.fio as fio3_0_ from library.author author0_ where upper(author0_.fio) like upper('%??%') order by author0_.fio asc