ElasticSearch应用之Java示例源代码

/** * @author Geloin */ package com.geloin.esample.util; import java.util.UUID; import junit.framework.Assert; import org.elasticsearch.action.bulk.BulkRequestBuilder; import org.elasticsearch.action.bulk.BulkResponse; import org.elasticsearch.action.index.IndexRequest; import org.elasticsearch.action.search.SearchResponse; import org.elasticsearch.index.query.QueryBuilder; import org.elasticsearch.index.query.QueryBuilders; import org.elasticsearch.search.SearchHit; import org.elasticsearch.search.SearchHits; import org.junit.Test; import com.geloin.esample.BaseTest; import com.geloin.esample.entity.Person; /** * @author Geloin * */ public class MatchAllQueryTest extends BaseTest { @Test public void matchAllQuery() { try { BulkRequestBuilder builder = client.prepareBulk(); // 创建索引 for (int i = 0; i < 10; i++) { Person p = new Person(); p.setAge(20 + i); p.setId(UUID.randomUUID().toString()); p.setIsStudent(true); p.setName("小别克听老别克讲别克的故事" + i); p.setSex("男"); String source = ElasticSearchUtil.BeanToJson(p); IndexRequest request = client .prepareIndex(index, type, p.getId()).setSource(source) .request(); builder.add(request); } BulkResponse response = builder.execute().actionGet(); if (response.hasFailures()) { Assert.fail("创建索引失败！"); } // 检索 QueryBuilder qb = QueryBuilders.matchAllQuery(); SearchResponse sr = client.prepareSearch(index).setTypes(type) // .setSearchType(SearchType.DFS_QUERY_THEN_FETCH) .setQuery(qb).setFrom(0).setSize(12).execute().actionGet(); SearchHits hits = sr.getHits(); if (null != hits && hits.totalHits() > 0) { for (SearchHit hit : hits) { String json = hit.getSourceAsString(); Person newPerson = mapper.readValue(json, Person.class); System.out.println("name\t\t" + newPerson.getName()); System.out.println("sex\t\t" + newPerson.getSex()); System.out.println("age\t\t" + newPerson.getAge()); System.out.println("isStudent\t\t" + newPerson.getIsStudent()); } } else { log.error("没有查询到任何内容！"); return; } // 查询总数量 long count = client.prepareCount(index).setTypes(type).setQuery(qb).execute().actionGet().count(); log.info("符合条件的总数量为：" + count); Thread.sleep(1000000); } catch (Exception e) { e.printStackTrace(); } } }