elasticsearch笔记(3) java操作es的index
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一: 准备es插件和elasticsearch-rest-high-level-client插件
二.
2.1创建索引连接
1 @Test 2 public void esTest() throws IOException { 3 // PUT /books 4 // { 5 // "settings": { 6 // "number_of_replicas": 1, 7 // "number_of_shards": 5 8 // }, 9 // "mappings": { 10 // "noval": { 11 // "properties": { 12 // "name": { 13 // "type": "text", 14 // "analyzer": "ik_max_word", 15 // "index": true, 16 // "store": false 17 // }, 18 // "author":{ 19 // "type": "keyword" 20 // }, 21 22 String hostname = "192.168.43.30"; 23 Integer prot = 9200; 24 25 // 设置索引 类型 26 String index = "person"; 27 String type = "man"; 28 29 30 //设置索引的信息:分片 备份 31 Settings.Builder settings = Settings.builder() 32 .put("number_of_shards", 5) 33 .put("number_of_replicas", 1); 34 //构建mapping 35 XContentBuilder mapping = JsonXContent.contentBuilder() 36 .startObject() 37 .startObject("properties") 38 .startObject("name") 39 .field("type","text") 40 .endObject() 41 .startObject("age") 42 .field("type","integer") 43 .endObject() 44 .endObject() 45 .endObject(); 46 47 // 构建索引 48 CreateIndexRequest createIndexRequest = new CreateIndexRequest(index) 49 .settings(settings) //分盘和备份 50 .mapping(type,mapping); 51 52 53 //链接es 54 HttpHost httpHost = new HttpHost(hostname,prot); 55 RestClientBuilder restClientBuilder = RestClient.builder(httpHost); 56 RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder); 57 58 //创建索引连接 59 CreateIndexResponse createIndexResponse = restHighLevelClient.indices() 60 .create(createIndexRequest, RequestOptions.DEFAULT); 61 62 63 }
2.2 检查索引是否存在
1 public void findIndex() throws IOException { 2 // 获取连接restHighLevelClient 3 HttpHost httpHost = new HttpHost(HOST,PORT); 4 RestClientBuilder restClientBuilder = RestClient.builder(httpHost); 5 RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder); 6 7 GetIndexRequest getIndexRequest = new GetIndexRequest(); 8 getIndexRequest.indices("person"); 9 10 boolean exists = restHighLevelClient.indices() 11 .exists(getIndexRequest, RequestOptions.DEFAULT); 12 System.out.println(exists); 13 14 }
2.3 删除索引
1 public void deletIndex() throws IOException { 2 // 获取连接restHighLevelClient 3 HttpHost httpHost = new HttpHost(HOST,PORT); 4 RestClientBuilder restClientBuilder = RestClient.builder(httpHost); 5 RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder); 6 7 DeleteIndexRequest deleteIndexRequest = new DeleteIndexRequest(); 8 deleteIndexRequest.indices("person"); 9 10 AcknowledgedResponse delete = restHighLevelClient.indices() 11 .delete(deleteIndexRequest, RequestOptions.DEFAULT); 12 System.out.println(delete.isAcknowledged()); 13 14 }
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