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This article introduces the relevant knowledge of "the use of ElasticSearch6.8 CRUD addition, deletion, modification and query". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Pom.xml

Org.elasticsearch.client transport 6.8.8 org.elasticsearch elasticsearch 6.8.8 org.apache.logging.log4j log4j-api 2.13.2 org.apache.logging.log4j log4j-core 2.13.2 junit junit 4.12

Create a connection

@ Beforepublic void prepare () throws Exception {index = "neptune"; type = "doc"; Settings settings = Settings.builder (). Put ("cluster.name", "hysg-test-cluster"). Build (); / / create client client = new PreBuiltTransportClient (settings) .addTransportAddress (new TransportAddress (InetAddress.getByName ("127.0.0.1"), 9300);}

Get a piece of data

@ Testpublic void getOne () throws Exception {GetResponse response = client.prepareGet (index, type,1). Get (); System.out.println (response);}

Delete data in batches according to query conditions

@ Testpublic void deleteByQueryField () throws Exception {BulkByScrollResponse response = DeleteByQueryAction.INSTANCE.newRequestBuilder (client) .filter (QueryBuilders.matchQuery ("IP", "127.0.0.1")) .source (index) .get (); long deleted = response.getDeleted (); System.out.println (deleted);}

Reference connection

Https://blog.csdn.net/baidu_24545901/article/details/80153693

This is the end of the content of "how to add, delete, modify and check ElasticSearch6.8 CRUD". Thank you for your reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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