springboot集成es 插入和查询的简单使用

第一步：引入依赖

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
            <version>2.2.5.RELEASE</version>
        </dependency>

第二步：配置yml文件，在spring下面加上这个

  elasticsearch:
    rest:
      # ip是服务器ip地址
      uris: http://127.0.0.1:9200

然后启动项目，看到出现这个就是成功了

第三步：创建一个常量类，用于存储我们一会儿要用到的名称

public class OrderEs {
    public static final String INDEX_NAME = "order_index";

    public static final String ID = "id";

    public static final String ORDER_NO = "order_no";

    public static final String ORDER_BUYER = "order_buyer";

    public static final String ORDER_PHONE = "order_phone";

    public static final String REAL_PAY = "real_pay";

    public static final String ACCOUNT = "account";
}

第四步：创建Es实体类，注意要加上@Document注解

@Document(indexName = OrderEs.INDEX_NAME)
@Data
public class OrderEsPO {

    @Id
    @Field(type = FieldType.Keyword,name = OrderEs.ID)
    private String id;

    @Field(type = FieldType.Keyword,name = OrderEs.ORDER_NO)
    private String orderNo;

    @Field(type = FieldType.Keyword,name = OrderEs.ORDER_BUYER)
    private String orderBuyer;

    @Field(type = FieldType.Keyword,name = OrderEs.ORDER_PHONE)
    private String orderPhone;

    @Field(type = FieldType.Keyword,name = OrderEs.REAL_PAY)
    private String realPay;

    @Field(type = FieldType.Keyword,name = OrderEs.ACCOUNT)
    private String account;

}

第五步：写测试接口，这里展示了插入和查询两个方法

@RestController
@RequestMapping("/order")
@CrossOrigin
public class OrderController 

    @Resource
    private ElasticsearchRestTemplate elasticsearchRestTemplate;

    /**
     * es插入
     *
     * @return {@link String}
     */

    @GetMapping("/esinsert")
    @Transactional
    public String esInsert(){
        OrderEsPO orderEsPO = new OrderEsPO();
        orderEsPO.setOrderNo("1234455");
        orderEsPO.setOrderBuyer("张三");
        orderEsPO.setOrderPhone("13191892075");
        orderEsPO.setRealPay("100000");
        orderEsPO.setAccount("1008611");
        elasticsearchRestTemplate.save(orderEsPO);
        return "success";
    }

    /**
     * es搜索
     *
     * @param orderEsPO 订单es参数
     * @return {@link String}
     */
    @GetMapping("/essearch")
    @Transactional
    public String esSearch(OrderEsPO orderEsPO){
        /**构造查询对象**/
        BoolQueryBuilder booleanQueryBuilder = QueryBuilders.boolQuery();
        /**编写查询条件**/
        booleanQueryBuilder.should(QueryBuilders.termQuery(OrderEs.ORDER_NO,orderEsPO.getOrderNo()));
        /**构造query对象**/
        NativeSearchQuery nativeSearchQuery = new NativeSearchQuery(booleanQueryBuilder);
        /**搜索**/
        SearchHits<OrderEsPO> search = elasticsearchRestTemplate.search(nativeSearchQuery, OrderEsPO.class, IndexCoordinates.of(OrderEs.INDEX_NAME));
        List<OrderEsPO> collect = search.getSearchHits().stream().map(SearchHit::getContent).collect(Collectors.toList());
        return collect.toString();
    }
}

然后我们启动项目，先调用插入接口，由于这个索引一开始是不存在的，第一次调用后会默认创建索引，然后打开我们的可视化界面，就能看到这里的索引