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spring 操作elasticsearch查询使用方法

2024-07-13 10:07:49
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最近学习了一下elasticsearch使用,网上的资料又很少,真是一个头两个大。好歹最后终于了解了。留个笔记做日后查询。

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;     }   }    /**    * 删除    *     * @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;     }   }      /**    * 删除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;     }   }     /**    * 根据条件查询    * @param filedContentMap 不能为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()) {//字段查询           qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key)));         }       dq.setQuery(qb);;       elasticsearchTemplate.delete(dq, getEntityClass());;       return true;     } catch (Exception e) {       e.printStackTrace();       return false;     }   }   /**    * 检查健康状态    *     * @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;     }   }    /**    * 条件查询    *     * @param searchfields    *      查询字段    * @param filedContentMap    *      字段和查询内容    * @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)//分页       nsb.withPageable(new PageRequest(basePage.getPageNo(), basePage.getPageSize()));     BoolQueryBuilder qb=QueryBuilders. boolQuery();     for (String key : filedContentMap.keySet()) {//字段查询       qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key)));            }     //userKey=78e48b85e94911e0d285f4eec990d556     //fa6e9c5bb24a21807c59e5fd3b609e12     nsb.withQuery(qb);     SearchQuery searchQuery = nsb.build();//查询建立      Page<T> page = null;     if (heightFields!=null&&heightFields.size() > 0) {//如果设置高亮       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//如果不设置高亮     {       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()) {//字段查询       qb.must(QueryBuilders.matchQuery(key,filedContentMap.get(key)));            }     nsb.withQuery(qb);     SearchQuery searchQuery = nsb.build();//查询建立     Page<T> page = null;     if (heightFields!=null&&heightFields.size() > 0) {//如果设置高亮       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//如果不设置高亮       page = elasticsearchTemplate.queryForPage(searchQuery,getEntityClass());          return page.getContent();   }   /**    * 本类查询    *     * @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;   }      /**    * 得到类型    *     * @return    */   public abstract Class<T> getEntityClass();   /**    * 添加各自类的影射    */   public abstract void putClassMapping();          } 

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