最近學習了一下elasticsearch使用，網上的資料又很少，真是一個頭兩個大。好歹最后終于了解了。留個筆記做日后查詢。
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package com.gooddeep.dev.elasticsearch.commons.dao; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.elasticsearch.action.ActionFuture; import org.elasticsearch.action.admin.cluster.health.ClusterHealthRequest; import org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse; import org.elasticsearch.action.search.SearchResponse; import org.elasticsearch.client.Client; import org.elasticsearch.cluster.health.ClusterHealthStatus; import org.elasticsearch.common.text.Text; import org.elasticsearch.index.query.BoolQueryBuilder; import org.elasticsearch.index.query.QueryBuilders; import org.elasticsearch.search.SearchHit; import org.elasticsearch.search.highlight.HighlightBuilder; import org.elasticsearch.search.highlight.HighlightBuilder.Field; import org.elasticsearch.search.sort.FieldSortBuilder; import org.elasticsearch.search.sort.SortOrder; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.Page; import org.springframework.data.domain.PageImpl; import org.springframework.data.domain.PageRequest; import org.springframework.data.domain.Pageable; import org.springframework.data.elasticsearch.core.ElasticsearchTemplate; import org.springframework.data.elasticsearch.core.SearchResultMapper; import org.springframework.data.elasticsearch.core.query.Criteria; import org.springframework.data.elasticsearch.core.query.CriteriaQuery; import org.springframework.data.elasticsearch.core.query.DeleteQuery; import org.springframework.data.elasticsearch.core.query.IndexQuery; import org.springframework.data.elasticsearch.core.query.IndexQueryBuilder; import org.springframework.data.elasticsearch.core.query.NativeSearchQueryBuilder; import org.springframework.data.elasticsearch.core.query.SearchQuery; import org.springframework.data.elasticsearch.core.query.StringQuery; import org.springframework.stereotype.Component; import com.gooddeep.dev.core.helper.PropertyHelper; import com.gooddeep.dev.core.helper.UuidHelper; import com.gooddeep.dev.core.model.BasePage; import com.gooddeep.dev.elasticsearch.commons.model.EsBaseBean; import com.gooddeep.dev.elasticsearch.commons.service.EsBaseService; @Component("esBaseDao") public abstract class EsBaseDaoImpl<T> implements EsBaseDao<T> { private Logger logger = LoggerFactory.getLogger(EsBaseService.class); @Autowired private ElasticsearchTemplate elasticsearchTemplate; @Autowired private Client esClient; /** * 插入或等新，需要有id，id需要自己生成 * * @param tList * @return */ public boolean insertOrUpdate(List<T> tList) { List<IndexQuery> queries = new ArrayList<IndexQuery>(); for (T t : tList) { String id = ((EsBaseBean) t).getId(); if (id == null) { id = UuidHelper.getRandomUUID(); ((EsBaseBean) t).setId(id); } IndexQuery indexQuery = new IndexQueryBuilder().withId(id).withObject(t).build(); queries.add(indexQuery); } elasticsearchTemplate.bulkIndex(queries); return true; } /** * 插入或更新 * * @param t * @return */ public boolean insertOrUpdate(T t) { String id = ((EsBaseBean) t).getId(); if (id == null) { id = UuidHelper.getRandomUUID(); ((EsBaseBean) t).setId(id); } try { IndexQuery indexQuery = new IndexQueryBuilder().withId(id).withObject(t).build(); elasticsearchTemplate.index(indexQuery); return true; } catch (Exception e) { logger.error("insert or update user info error.", e); return false; } } /** * 刪除 * * @param id * @return */ public boolean deleteById(String id) { try { elasticsearchTemplate.delete(getEntityClass(), id); return true; } catch (Exception e) { logger.error("delete " + getEntityClass() + " by id " + id + " error.", e); return false; } } /** * 刪除ids * @param idList * @return */ @Override public boolean deleteByIds(List<String> idList) { try { CriteriaQuery criteriaQuery = new CriteriaQuery(new Criteria()); criteriaQuery.setIds(idList); elasticsearchTemplate.delete(criteriaQuery, getEntityClass()); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 根據條件查詢 * @param filedContentMap 不能為null * @return */ public boolean deleteByQuery(Map<String,Object> filedContentMap) { try { DeleteQuery dq = new DeleteQuery(); BoolQueryBuilder qb=QueryBuilders. boolQuery(); if(filedContentMap!=null) for (String key : filedContentMap.keySet()) {//字段查詢 qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key))); } dq.setQuery(qb);; elasticsearchTemplate.delete(dq, getEntityClass());; return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 檢查健康狀態 * * @return */ public boolean ping() { try { ActionFuture<ClusterHealthResponse> health = esClient.admin() .cluster().health(new ClusterHealthRequest()); ClusterHealthStatus status = health.actionGet().getStatus(); if (status.value() == ClusterHealthStatus.RED.value()) { throw new RuntimeException( "elasticsearch cluster health status is red."); } return true; } catch (Exception e) { logger.error("ping elasticsearch error.", e); return false; } } /** * 條件查詢 * * @param searchfields * 查詢字段 * @param filedContentMap * 字段和查詢內容 * @param sortField * 排序 字段 * @param order * 排序 * @param from * @param size * @return */ @Override public BasePage<T> queryPage(Map<String,Object> filedContentMap, final List<String> heightFields, String sortField, SortOrder order, BasePage<T>basePage) { Field[] hfields=new Field[0]; if(heightFields!=null) { hfields = new Field[heightFields.size()]; for (int i = 0; i < heightFields.size(); i++) { hfields[i] = new HighlightBuilder.Field(heightFields.get(i)).preTags("<em style='color:red'>").postTags("</em>").fragmentSize(250); } } NativeSearchQueryBuilder nsb = new NativeSearchQueryBuilder().withHighlightFields(hfields);//高亮字段 if (sortField != null && order != null)//排序 nsb.withSort(new FieldSortBuilder(sortField).ignoreUnmapped(true).order(order)); if (basePage != null)//分頁 nsb.withPageable(new PageRequest(basePage.getPageNo(), basePage.getPageSize())); BoolQueryBuilder qb=QueryBuilders. boolQuery(); for (String key : filedContentMap.keySet()) {//字段查詢 qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key))); } //userKey=78e48b85e94911e0d285f4eec990d556 //fa6e9c5bb24a21807c59e5fd3b609e12 nsb.withQuery(qb); SearchQuery searchQuery = nsb.build();//查詢建立 Page<T> page = null; if (heightFields!=null&&heightFields.size() > 0) {//如果設置高亮 page = elasticsearchTemplate.queryForPage(searchQuery, getEntityClass(), new SearchResultMapper() { @SuppressWarnings("unchecked") @Override public <T> Page<T> mapResults(SearchResponse response,Class<T> clazz, Pageable pageable) { List<T> chunk = new ArrayList<T>(); for (SearchHit searchHit : response.getHits()) { if (response.getHits().getHits().length <= 0) { return null; } Map<String, Object> entityMap = searchHit.getSource(); for (String highName : heightFields) { Text text[]=searchHit.getHighlightFields().get(highName).fragments(); if(text.length>0) { String highValue = searchHit.getHighlightFields().get(highName).fragments()[0].toString(); entityMap.put(highName, highValue); } } chunk.add((T) PropertyHelper.getFansheObj( getEntityClass(), entityMap)); } if (chunk.size() > 0) { return new PageImpl<T>((List<T>) chunk); } return new PageImpl<T>(new ArrayList<T>()); } }); } else//如果不設置高亮 { logger.info("#################"+qb.toString()); page = elasticsearchTemplate.queryForPage(searchQuery,getEntityClass()); } // List<T> ts = page.getContent(); basePage.setTotalRecord(page.getTotalElements()); basePage.setResults(page.getContent()); return basePage; } @Override public List<T> queryList(Map<String, Object> filedContentMap,final List<String> heightFields, String sortField, SortOrder order) { Field[] hfields=new Field[0]; if(heightFields!=null) { hfields = new Field[heightFields.size()]; for (int i = 0; i < heightFields.size(); i++) { //String o="{\"abc\" : \"[abc]\"}"; hfields[i] = new HighlightBuilder.Field(heightFields.get(i)).preTags("<em>").postTags("</em>").fragmentSize(250); } } NativeSearchQueryBuilder nsb = new NativeSearchQueryBuilder().withHighlightFields(hfields);//高亮字段 if (sortField != null && order != null)//排序 nsb.withSort(new FieldSortBuilder(sortField).ignoreUnmapped(true).order(order)); BoolQueryBuilder qb=QueryBuilders. boolQuery(); for (String key : filedContentMap.keySet()) {//字段查詢 qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key))); } nsb.withQuery(qb); SearchQuery searchQuery = nsb.build();//查詢建立 Page<T> page = null; if (heightFields!=null&&heightFields.size() > 0) {//如果設置高亮 page = elasticsearchTemplate.queryForPage(searchQuery, getEntityClass(), new SearchResultMapper() { @SuppressWarnings("unchecked") @Override public <T> Page<T> mapResults(SearchResponse response,Class<T> clazz, Pageable pageable) { List<T> chunk = new ArrayList<T>(); for (SearchHit searchHit : response.getHits()) { if (response.getHits().getHits().length <= 0) { return null; } Map<String, Object> entityMap = searchHit.getSource(); for (String highName : heightFields) { String highValue = searchHit.getHighlightFields().get(highName).fragments()[0].toString(); entityMap.put(highName, highValue); } chunk.add((T) PropertyHelper.getFansheObj(getEntityClass(), entityMap)); } if (chunk.size() > 0) { return new PageImpl<T>((List<T>) chunk); } return null; } }); } else//如果不設置高亮 page = elasticsearchTemplate.queryForPage(searchQuery,getEntityClass()); return page.getContent(); } /** * 本類查詢 * * @param id * @return */ public T queryById(String id) { StringQuery stringQuery = new StringQuery("id=" + id); T t = elasticsearchTemplate.queryForObject(stringQuery, getEntityClass()); return t; } public ElasticsearchTemplate getElasticsearchTemplate() { return elasticsearchTemplate; } public Client getEsClient() { return esClient; } /** * 得到類型 * * @return */ public abstract Class<T> getEntityClass(); /** * 添加各自類的影射 */ public abstract void putClassMapping(); } |
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：http://blog.csdn.net/u013378306/article/details/52185063
