springboot整合ElasticSearch 使用elasticsearchTemplate和elasticsearchRepository两种方式

springboot整合ES的依赖

       
            org.springframework.boot
            spring-boot-starter-data-elasticsearch
        

spring.data.elasticsearch.cluster-name=my-application
spring.data.elasticsearch.cluster-nodes=localhost:9300
spring.data.elasticsearch.repositories.enabled=true

1.使用elasticsearchRepository

这种方式简单方便，以操作repository的方式操作ES 不了解ES的开发者也可以简单使用

创建实体类，

指定index(数据库)  type(数据库中的表) 分片和副本不是必须的

@Document(indexName = "book",type = "book", shards = 1,replicas = 0, refreshInterval = "-1")
public class Book {
    //注意 实现的实体类必须指定id属性 不然会报异常
    private Integer id;
    private String bookName;
    private String author;
    private String publish;
    private Integer price;

    
    //  setXXX()和getXXX()

    @Override
    public String toString() {
        return "Book{" +
                "id=" + id +
                ", bookName='" + bookName + '\'' +
                ", author='" + author + '\'' +
                ", publish='" + publish + '\'' +
                ", price=" + price +
                '}';
    }

}

创建dao层

只需要继承ElasticSearchRepository的接口  不需要自己去实现接口

接口上 可以不使用任何注解(如：@Repository)

public interface BookRepository extends ElasticsearchRepository {
    List findByPrice(Integer price);
}

测试类。。。 

@RunWith(SpringRunner.class)
@SpringBootTest
public class ElasticsearchApplicationTests {

    @Autowired
    BookRepository bookRepository;

    @Test
    public  void  test1(){
        Book book=new Book();
        book.setAuthor("张三");
        book.setBookName("javv从入门到放弃");
        book.setPrice(24);
        book.setPublish("出版社");
        bookRepository.save(book);
        Iterable all = bookRepository.findAll();
        Iterator iterator = all.iterator();
        while(iterator.hasNext()) {
            Book next = iterator.next();
            System.out.println(next);
        }
    }
}

2.使用elasticsearchTemplate

直接注入elasticsearchTemplate

  @Autowired
    ElasticsearchTemplate elasticsearchTemplate;
   @Test
   public void test2(){
       Client client = elasticsearchTemplate.getClient();
       GetResponse response = client.prepareGet("index", "type", "id").get();
       System.out.println(response.getSource());
   }

以上只是简单的使用  elasticsearchTemplate方式的  如果想详细了解client的使用 -->  client的常用操作API