使用 Elasticsearch Nest 7.x 查询 5.x 索引

Question

我有一个使用 Nest 7.x 的项目，我需要对较旧的 5.x elasticsearch 索引进行查询。当我这样打电话时，出现以下错误。我猜这是由于映射类型在第 6 版及更高版本中发生了变化。有什么办法可以查询旧索引吗？

var result = _elasticClient.GetAsync<Category>(id)

Invalid NEST response built from a successful (404) low level call on GET: /myindex/_doc/15437 Request: <Request stream not captured or already read to completion by serializer. Set DisableDirectStreaming() on ConnectionSettings to force it to be set on the response.> Response: {"_index":"2020-01-13","_type":"_doc","_id":"15437","found":false}

Answer 1

作为一种变通方法，我这样做了，它似乎奏效了。不确定是否有更好的解决方案？

var response = _elasticClient.SearchAsync<Category>(s => s
                .Query(q => q
                    .Bool(b => b
                        .Must(
                            bs => bs.Term(p => p.Id, id),
                            bs => bs.Term(p => p.Field("_type").Value("category"))
                        )
                    )
                )
            )

使用 Elasticsearch Nest 7.x 查询 5.x 索引

Using Elasticsearch Nest 7.x to query 5.x index

elasticsearch

nest