Shulou(Shulou.com)06/02 Report--

In this issue, the editor will bring you about the difference and start of the Elasticsearch Java Client version. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

A brief summary:

If the server is below 5.6, choose the same version of TransportClient to avoid some API servers not supporting it.

If the server is above 5.6, choose the same version of RestClient

TransportClient start:

Version 5.6 and earlier:

/ / on startupClient client = TransportClient.builder () .build () .addTransportAddress (new InetSocketTransportAddress (InetAddress.getByName ("host1"), 9300) .addTransportAddress (new InetSocketTransportAddress (InetAddress.getByName ("host2"), 9300)); / / on shutdownclient.close ()

Version 6.0 and later:

/ / on startupTransportClient client = new PreBuiltTransportClient (Settings.EMPTY) .addTransportAddress (new TransportAddress (InetAddress.getByName ("host1"), 9300) .addTransportAddress (new TransportAddress (InetAddress.getByName ("host2"), 9300)); / / on shutdownclient.close () TransportClient sends search request: SearchResponse response = client.prepareSearch ("index1", "index2") .setTypes ("type1", "type2") .setSearchType (SearchType.DFS_QUERY_THEN_FETCH) .setQuery (QueryBuilders.termQuery ("multi") "test")) / / Query .setPostFilter (QueryBuilders.rangeQuery ("age"). From (12). To (18) / / Filter .setFrom (0) .setSize (60) .setExplain (true) .get () HttpClient start: / / Java Low Level REST ClientRestClient lowLevelRestClient = RestClient.builder (new HttpHost ("localhost", 9200, "http"), new HttpHost ("localhost", 9201, "http"). Build (); / / Java HighLevel REST ClientRestHighLevelClient client = new RestHighLevelClient (lowLevelRestClient); HttpClient sends search requests: SearchRequest searchRequest = new SearchRequest (); searchRequest.source (sourceBuilder); SearchResponse searchResponse = client.search (searchRequest) The above is the difference and start of the Elasticsearch Java Client version shared by the editor. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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