1.場景還原

   近期，筆者專案中需要通過關鍵字來搜尋與之相關的資料，es的全文搜尋終於派上用場了！

2.準備步驟

②在es的plugins目錄下建立ik，然後解壓縮ik

③在elasticsearch.yml配置ik屬性

index.analysis.analyzer.default.tokenizer : "ik_max_word"
index.analysis.analyzer.default.type : "ik"

3.實現方案

/**
 * 全文索引
 * @param index
 * @param type
 * @return
 */
public List hotCitySearchByEs(String index, String type,String startCity, String endCity,SortBuilder sortBuilder,QueryBuilder queryBuilder,Integer pageNo,Integer pageSize) {
       TransportClient  client = getClient();
        //查詢條件 在匹配文字的時候一定用matchQuery termQuery 用於精確匹配 匹配數字 ，long型 term查詢不會分詞
        //matchQuery自帶分詞；
        //termQuery不帶分詞器
    QueryBuilder qb = boolQuery().must(termQuery("pinStartPoint", startCity))
                                 .must(termQuery("pinEndPoint", endCity));

                //索引
        SearchResponse response = client.prepareSearch(index)
                //type
                .setTypes(type)
                //搜尋型別
                .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
                // Query
                .setQuery(qb)
                //排序
                .addSort(sortBuilder)
                //過濾
                .setPostFilter(queryBuilder)
                //分頁
                .setFrom(pageNo).setSize(pageSize).setExplain(true)
                //執行
                .execute()
                .actionGet();

    return response2List(client,response);

}
 

/**
 * 將查詢後獲得的response轉成list
 * @param client
 * @param response
 * @return zx
 */
public static List response2List(TransportClient client,SearchResponse response){
    SearchHits hits = response.getHits();
    List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();
    for (int i = 0; i < hits.getHits().length; i++) {
        BigDecimal geoDis = new BigDecimal((Double) hits.getAt(i).getSortValues()[0]);
        Map<String, Object> map = hits.getAt(i).getSource();
        map.put(EsProperties.ES_SERVICE_DISTANCE_TO,geoDis);
        list.add(map);
    }
    client.close();
    return list;
}
 

好了，今天點到為止，我是張星，歡迎加入博主技術交流群，群號：526601468