查询ElasticSearch时出现named_object_not_found

查询ElasticSearch时出现named_object_not_found_Exception

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发布： 2024-02-06 09:15:12

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问题内容

我正在尝试使用 hibernatesearh 6 查询 elasticsearch。以下是发送到 elasticsearch 的 json 查询。根据此处的文档，它看起来很好：https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl.html

{"query":{"query_string":{"fields":["addresses.address_key"],"query":"3g5g36ee-45b0-4636-79fe-9aaf446b7ab6"}}}

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但是，收到以下异常消息：

org.hibernate.search.util.common.searchexception: hsearch400007: elasticsearch request failed: hsearch400090: elasticsearch response indicates a failure.
request: post /employee-read/_search with parameters {from=0, size=10, track_total_hits=true}
response: 400 'bad request' from 'http://localhost:9200' with body 
{
  "error": {
    "root_cause": [
      {
        "type": "parsing_exception",
        "reason": "unknown query [query]",
        "line": 1,
        "col": 19
      }
    ],
    "type": "parsing_exception",
    "reason": "unknown query [query]",
    "line": 1,
    "col": 19,
    "caused_by": {
      "type": "named_object_not_found_exception",
      "reason": "[1:19] unknown field [query]"
    }
  },
  "status": 400
}

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以下是实体：

@indexed(index = "employee")
public class employee {

  @fulltextfield(name = "employee_key")
  private string employeekey;

  @fulltextfield(name = "first_name")
  private string firstname;
    
  @indexedembedded(includeembeddedobjectid = true, includedepth = 2)
  private address addresses;
}

public class address {
    
  @fulltextfield(name = "address_key")
  private string addresskey;

  @fulltextfield(name = "street_name")
  private string streetname;

}

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以下是从 elastic 获取数据的代码，其中 predicatefunction 为： (elasticsearchsearchpredicatefactory f) -> f.fromjson(queryjson)

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SearchSession searchSession = Search.session(entityManager);

            SearchResult<Employee> searchResult = searchSession.search(Employee.class)
                    .extension(ElasticsearchExtension.get())
                    .where(searchPredicateFactory -> {
                        return predicateFunction.apply(searchPredicateFactory);
                    })
                    .fetch(Math.toIntExact(page.getOffset()), page.getPageSize());

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正确答案

hibernate search 希望您传递查询本身，而无需包装器 json 对象。请参阅示例此处。因此，在您的情况下，您应该传递：

{
   "query_string":{
      "fields":[
         "addresses.address_key"
      ],
      "query":"3g5g36ee-45b0-4636-79fe-9aaf446b7ab6"
   }
}

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