Elasticsearch示例
/** * @author: yqq * @date: 2019/2/28 * @description: */ public class TestMain { private static RestClient restClient; static { restClient=RestClient.builder(new HttpHost("localhost",9200,"http")).build(); } /** * 1.查询所有数据 * @throws Exception */ @Test public void QueryAllSkuId() throws Exception { String method = "POST"; String endpoint = "/sku/doc/_search"; HttpEntity entity = new NStringEntity("{\n" + " \"query\": {\n" + " \"match_all\": {}\n" + " }\n" + "}", ContentType.APPLICATION_JSON); Response response = restClient.performRequest(method,endpoint, Collections.<String, String>emptyMap(),entity); System.out.println(EntityUtils.toString(response.getEntity())); } /** * 2.查询匹配,message为条件,新增的时候必须包含该字段 * @throws IOException */ @Test public void searchSkuId () throws IOException { /** * 添加的数据格式 {"skuId":"111111111","content":"对于非基本类型,也就是常说的引用数据类型"} */ String method = "POST"; String endpoint = "/sku/doc/_search"; HttpEntity entity = new NStringEntity( "{\n" + " \"query\": { \n" + " \"match\": {\n" + " \"content\": \"基本类型\"\n" + " }\n" + " }\n" + "}", ContentType.APPLICATION_JSON); Response response = restClient.performRequest(method,endpoint, Collections.<String, String>emptyMap(),entity); System.out.println(EntityUtils.toString(response.getEntity())); } /** * 3.查询所有数据 * @throws Exception */ @Test public void QueryAll() throws Exception { String method = "POST"; String endpoint = "/delete-index/_search/"; HttpEntity entity = new NStringEntity("{\n" + " \"query\": {\n" + " \"match_all\": {}\n" + " }\n" + "}", ContentType.APPLICATION_JSON); Response response = restClient.performRequest(method,endpoint, Collections.<String, String>emptyMap(),entity); System.out.println(EntityUtils.toString(response.getEntity())); } /** *4. 查询匹配,message为条件,新增的时候必须包含该字段 * @throws IOException */ @Test public void search () throws IOException { /** * 添加的数据格式 {\n" + " \"user\" : \"kimchy\",\n" + " \"post_date\" : \"2009-11-15T14:12:12\",\n" + " \"message\" : \"trying out Elasticsearch\"\n" + "} */ String method = "POST"; String endpoint = "/delete-index/_search/"; HttpEntity entity = new NStringEntity( "{\n" + " \"query\": { \n" + " \"match\": {\n" + " \"message\": \"out\"\n" + " }\n" + " }\n" + "}", ContentType.APPLICATION_JSON); Response response = restClient.performRequest(method,endpoint, Collections.<String, String>emptyMap(),entity); System.out.println(EntityUtils.toString(response.getEntity())); } }
引入依赖:
<dependency> <groupId>org.elasticsearch.client</groupId> <artifactId>elasticsearch-rest-client</artifactId> <version>6.5.3</version> </dependency>
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