Question

我在Spring Boot应用程序中使用Elasticsearch Java rest高级客户端。我已经使用BulkRequest成功索引了数据。但是，当我想实施搜索时，我无法这样做。我正在使用SearchRequest构建搜索查询。在我的QueryBuilders中，我使用multiMatchQuery在多个文件上搜索关键字。以下是我正在尝试的附加代码：-

public List<POJOClass> searchByKeyword(String keyword) throws IOException {

  SearchRequest searchRequest = new SearchRequest("indexName");
  searchRequest.types("indexType");
  SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();      
  QueryBuilder queryBuilder = QueryBuilders.multiMatchQuery(keyword)
          .field("field1")
          .field("field2")
          .field("field3")
          .field("field4");         
  searchSourceBuilder.query(queryBuilder);      
  searchRequest.source(searchSourceBuilder);

  SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);    

  SearchHits hits = searchResponse.getHits();
  SearchHit[] searchHits = hits.getHits();
  List<POJOClass> list= new ArrayList<>();      
  for(SearchHit hit : searchHits) {

        list.add(objectMapper.convertValue(hit.getSourceAsMap(), POJOClass.class));
      }     
  return list;
  }

以下是当我调用传递关键字的控制器方法时由QueryBuilder形成的查询：-

  curl -XGET "127.0.0.1:9193/search?keyword=KEYWORD"


 {
  "multi_match" : {
   "query" : "KEYWORD",
    "fields" : [
     "field1^1.0",
     "field2^1.0",
     "field3^1.0",
     "field4^1.0",
    ],
  "type" : "best_fields",
  "operator" : "OR",
  "slop" : 0,
  "prefix_length" : 0,
  "max_expansions" : 50,
  "zero_terms_query" : "NONE",
  "auto_generate_synonyms_phrase_query" : true,
  "fuzzy_transpositions" : true,
  "boost" : 1.0
 }
}

通过REST控制器调用此方法后，SearchResponse方法将返回一个空数组。结果如下：-

{"took":74,"timed_out":false,"_shards":{"total":1,"successful":1,"skipped":0,"failed":0},"hits":{"total":{"value":0,"relation":"eq"},"max_score":null,"hits":[]}}

当我通过传递id使用简单curl来查询时，它会返回结果。例如-

 curl -XGET 127.0.0.1:9200/indexName/indexType/id

Elasticsearch Java高级Rest客户端的SearchResponse将空值集作为结果

0 个答案: