Elasticsearch学习(3) spring boot整合Elasticsearch的原生方式

import org.springframework.data.elasticsearch.annotations.Document;

@Document(indexName = "article",type = "center")
public class Zoo {
            private int id;
            private String animal;
            private Integer num;
            private String  breeder;
            public int getId() {
                return id;
            }
            public void setId(int id) {
                this.id = id;
            }
            public String getAnimal() {
                return animal;
            }
            public void setAnimal(String animal) {
                this.animal = animal;
            }
            public Integer getNum() {
                return num;
            }
            public void setNum(Integer num) {
                this.num = num;
            }
            public String getBreeder() {
                return breeder;
            }
            public void setBreeder(String breeder) {
                this.breeder = breeder;
            }
            public Zoo(int id, String animal, Integer num, String breeder) {
                super();
                this.id = id;
                this.animal = animal;
                this.num = num;
                this.breeder = breeder;
            }
            public Zoo() {
                super();
            }
            
}

import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;


@Configuration
public interface ZooMapper  extends  ElasticsearchRepository<Zoo,Integer>{

}

import java.util.List;

import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.sort.FieldSortBuilder;
import org.elasticsearch.search.sort.SortBuilders;
import org.elasticsearch.search.sort.SortOrder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.elasticsearch.core.query.NativeSearchQueryBuilder;
import org.springframework.data.elasticsearch.core.query.SearchQuery;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class UserController {

    @Autowired
    ZooMapper zooMapper;
    
     // 访问接口地址：localhost:8880/find    
    //存储数据
    @GetMapping("find")
    public Object save(){
        
            //1.创建QueryBuilder  可以理解为装查询条件的容器
             BoolQueryBuilder builder = QueryBuilders.boolQuery();
             //2.设置查询条件，参数1：  字段名 参数2：字段值(为什么中文是一个字而不是词，这个后面在说)
             QueryBuilder queryBuilder1=QueryBuilders.termQuery("breeder", "饲");
             //设置查询条件多个匹配，参数1：  字段名     参数2：字段值  参数3：字段值
             QueryBuilder queryBuilder2=QueryBuilders.termsQuery("animal", "rabbit","lion");
             
             
             //3.将查询的条件放入容器中
             //其中 must相当于SQL中的and     should相当于SQL中的or  mustNot相当于SQL中的not
             builder.must(queryBuilder1);
             builder.should(queryBuilder2);
             
             
             //4.设置排序  参数：需要排序字段 DESC表示降序
             FieldSortBuilder sort = SortBuilders.fieldSort("id").order(SortOrder.DESC);
             
            //5.设置分页,参数1：第几页开始（第一页是0），参数2：显示的条数 
            //在spring 2.0开始后，使用PageRequest.of创建分页参数
             PageRequest page =PageRequest.of(0, 2);
            
             
             //6.在设置好查询条件、排序设置、分页设置后需要将他们放入NativeSearchQueryBuilder 容器中
             NativeSearchQueryBuilder  nativeSearchQueryBuilder =new NativeSearchQueryBuilder();
             //将查询条件放入容器中
             nativeSearchQueryBuilder.withQuery(builder);
             //将分页放入容器中
             nativeSearchQueryBuilder.withPageable(page);
             //将排序放入容器中
             nativeSearchQueryBuilder.withSort(sort);
             //最后将容器组装后，生产NativeSearchQuery
             //此时 SearchQuery中的sql为
             //select  * from zoo where  breeder="饲养员1号" or animal in("rabbit","lion") ORDER BY id DESC LIMIT 0,2
             SearchQuery  query = nativeSearchQueryBuilder.build();
             System.out.println("查询的语句:" + query.getQuery().toString());
             //7.开始查询
             Page<Zoo> listPage = zooMapper.search(query); 
             //获取总条数
             int total = (int) listPage.getTotalElements();
             //获取查询的内容
             List<Zoo> relist = listPage.getContent();
             System.out.println("relist----------------"+relist.toString());
               return relist;
    }
    
    
}