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  • ElasticSearch High Level REST API【4】多搜索

    1、Multi-Search多搜索请求

    Multi-Search可同时添加多个search搜索请求,并行地在一个http请求中执行多个搜索请求,相较多次单请求查询可提升查询效率。ES客户掉通过mget方法实现多请求搜索:

    public void multiSearch(){
            RestHighLevelClient client = elasticClient.getRestHighLevelClient();
            MultiSearchRequest request = new MultiSearchRequest();
            SearchRequest firstSearchRequest = new SearchRequest();
            SearchSourceBuilder firstBuilder = new SearchSourceBuilder();
            firstBuilder.query(matchQuery("name","潇潇"));
            firstSearchRequest.source(firstBuilder);
            request.add(firstSearchRequest);
            SearchRequest secondRequest = new SearchRequest();
            SearchSourceBuilder secondBuild = new SearchSourceBuilder();
            secondBuild.query(matchQuery("position","建筑师"));
            secondRequest.source(secondBuild);
            request.add(secondRequest);
            try {
                MultiSearchResponse multiResponse = client.msearch(request, RequestOptions.DEFAULT);
                MultiSearchResponse.Item firstItem  = multiResponse.getResponses()[0];
                if (firstItem.getFailure() != null) {
                    System.out.println("第一个请求失败!");
                }
                SearchResponse firstResponse = firstItem.getResponse();
                for (SearchHit documentFields : firstResponse.getHits().getHits()) {
                    System.out.println("第一个查询请求返回:"+documentFields.getSourceAsString());
                }
                MultiSearchResponse.Item seconditem = multiResponse.getResponses()[1];
                if (seconditem.getFailure() != null) {
                    System.out.println("第二个请求失败!");
                }
                SearchResponse secondResponse = seconditem.getResponse();
                for (SearchHit documentFields : secondResponse.getHits().getHits()) {
                    System.out.println("第二的查询请求返回:" + documentFields.getSourceAsString());
                }
                client.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    模板搜索

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  • 原文地址:https://www.cnblogs.com/chentop/p/10296526.html
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