Elasticsearch7.x教程(三)-SpringBoot+DataRepositories

public interface PersonRepository extends CrudRepository<Person, Long> {
/*
 *springdatarepository可以直接通过方法名的语义来实现功能，
 *比如查询可以这样写findBy+需要查询字段名+操作
 *当然你在IDE里会自动提示
*/
  List<Person> findByLastname(String lastname);

  List<Person> findByFirstnameLike(String firstname);
}

@Service
public class MyService {

  private final PersonRepository repository;

  public MyService(PersonRepository repository) {
    this.repository = repository;
  }

  public void doWork() {
    //创建&更新
    Person person = new Person();
    person.setFirstname("Oliver");
    person.setLastname("Gierke");
    repository.save(person);
    //删除
    repository.deleteAll();
    //精确查询
    List<Person> lastNameResults = repository.findByLastname("Gierke");
    //模糊查询
    List<Person> firstNameResults = repository.findByFirstnameLike("Oli");
 }
}

@SpringBootTest
class PersonRepositoryTest {
    @Autowired
    PersonRepository personRepository;

    @BeforeEach
    void setUp() {
    }

    /**
     * 创建或更新index document
     * 删除类似，方法名为personRepository.delete
     */
    @Test
    void create_update() {
        Person person = Person.builder()
                .id("101")
                .firstname("hanko java")
                .lastname("zhou")
                .build();
        Person result = personRepository.save(person);
        assertNotNull(result);
        assertEquals(person.getId(),result.getId());
    }

    /**
     * 通过Lastname精确查询
     */
    @Test
    void findByLastname() {
        List<Person> result = personRepository.findByLastname("zhou");
        assertNotNull(result);
        result.forEach(res-> System.out.println("查询结果："+res));
    }

    /**
     * 通过Firstname模糊查询
     * 以Like Contains Containing结尾为模糊查询
     * Like Contains区别在于Like可以支持通配符
     */
    @Test
    void findByFirstnameLike() {
        List<Person> result = personRepository.findByFirstnameContains("hanko*");
        assertNotNull(result);
        result.forEach(res-> System.out.println("查询结果："+res));
    }
    

    @Query("{\n" +
            "    \"match\": {\n" +
            "      \"firstname\": {\n" +
            "        \"query\": \"?0\"\n" +
            "      }\n" +
            "    }\n" +
            "  }")
    List<Person> queryByScript(String firstname);