Elasticsearch5.0 Java Api(四) -- 檢索索引

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　　測試檢索索引庫的功能

  1 package com.juyun.test;  2   3 import java.net.InetAddress;  4   5 import org.elasticsearch.client.Client;  6 import org.elasticsearch.common.settings.Settings;  7 import org.elasticsearch.common.transport.InetSocketTransportAddress;  8 import org.elasticsearch.index.query.QueryBuilder;  9 import org.elasticsearch.index.query.QueryBuilders; 10 import org.elasticsearch.search.SearchHit; 11 import org.elasticsearch.search.SearchHits; 12 import org.elasticsearch.transport.client.PreBuiltTransportClient; 13 import org.elasticsearch.action.get.GetResponse; 14 import org.elasticsearch.action.get.MultiGetItemResponse; 15 import org.elasticsearch.action.get.MultiGetResponse; 16 import org.elasticsearch.action.search.SearchResponse; 17  18 public class ElasticsearchGet { 19  20     private static Client client; 21      22     /** 23      * 測試檢索索引庫的功能 24      * @param args 25      */ 26     public static void main(String[] args) { 27  28         try { 29             // 設定叢集名稱  30             Settings settings = Settings.builder().put("cluster.name", "elasticsearch").build(); 31             // 建立client 32             client = new PreBuiltTransportClient(settings) 33                     .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("192.168.10.125"), 9300)); 34              35              36             //multiGet("flow", "data", "AVvnE1sA3HhivpslN8lN"); 37             getAll("newindex","newhttp"); 38              39              40              41             // 關閉client 42             client.close(); 43  44         } catch (Exception e) { 45             e.printStackTrace(); 46         } 47     } 48      49     // 通過單一的ID擷取一個文檔 50     public static void get(String indexName,String TypeName,String id){ 51         MultiGetResponse multiGetItemResponses = client.prepareMultiGet() 52                 .add(indexName, TypeName, id)                                        53                 .get(); 54  55             for (MultiGetItemResponse itemResponse : multiGetItemResponses) {       // 遍曆結果集 56                 GetResponse response = itemResponse.getResponse(); 57                 if (response.isExists()) {                                          // 檢驗文檔是否存在               58                     String json = response.getSourceAsString();    // 擷取文檔源        59                     System.out.println(json); 60                 } 61             } 62     } 63      64     // 傳入多個id，從相同的索引名/類型名中擷取多個文檔  65     public static void multiGet(String indexName,String TypeName,String id1,String id2,String id3){ 66         MultiGetResponse multiGetItemResponses = client.prepareMultiGet() 67                 .add(indexName, TypeName, id1, id2, id3) // 傳入多個id，從相同的索引名/類型名中擷取多個文檔             68                 .add("another", "type", "foo")          // 可以同時擷取不同索引中的文檔                    69                 .get(); 70  71             for (MultiGetItemResponse itemResponse : multiGetItemResponses) {       // 遍曆結果集 72                 GetResponse response = itemResponse.getResponse(); 73                 if (response.isExists()) {                                          // 檢驗文檔是否存在               74                     String json = response.getSourceAsString();    // 擷取文檔源     75                     System.out.println(json); 76                 } 77             } 78     } 79      80     // 同時擷取不同索引中的文檔  81     public static void multiGet(String indexName1,String indexName2,String indexName3){ 82         MultiGetResponse multiGetItemResponses = client.prepareMultiGet() 83                 .add(indexName1, indexName2,indexName3)          // 可以同時擷取不同索引中的文檔                    84                 .get(); 85  86             for (MultiGetItemResponse itemResponse : multiGetItemResponses) {       // 遍曆結果集 87                 GetResponse response = itemResponse.getResponse(); 88                 if (response.isExists()) {                                          // 檢驗文檔是否存在               89                     String json = response.getSourceAsString();    // 擷取文檔源     90                     System.out.println(json); 91                 } 92             } 93     } 94      95     // 根據索引和類別查詢所有資料 96     public static void getAll(String indexName,String typeName){ 97          98         QueryBuilder queryBuilder =QueryBuilders.matchAllQuery(); 99         SearchResponse searchResponse = client.prepareSearch(indexName).setTypes(typeName)100                 .setQuery(queryBuilder)101                 .execute()102                 .actionGet();103         SearchHits hits = searchResponse.getHits(); // 擷取搜尋結果104         System.out.println("查詢到記錄數:" + hits.getTotalHits());105         SearchHit[] searchHists = hits.getHits();106         if(searchHists.length>0){107             for(SearchHit hit:searchHists){108                 System.out.println(hit.getSource());109                 //System.out.println(hit.id());110             }111         }112     }113     114     115     116     // todo...117     // 欄位和內容查詢（分詞功能未加）118     public static void get(){119         120         // 建立QueryBuilder，可以設定單個欄位的查詢,也可以設定多個欄位的查詢121         QueryBuilder qb1 = QueryBuilders.termQuery("time", "2017-05-08T02:50:47.700Z"); // 查詢time欄位中包含2關鍵字的文檔122         QueryBuilder qb2= QueryBuilders.multiMatchQuery("2", "time","inbyte"); // 查詢time或inbyte欄位中包含2關鍵字的文檔123 124         // 執行查詢，通過client設定查詢的index、type、query.返回一個SearchResponse對象125         SearchResponse response = client.prepareSearch("flow").setTypes("data").setQuery(qb1).execute()126                 .actionGet();127         // 處理查詢結果，擷取查詢結果集合128         SearchHits hits = response.getHits();129         if (hits.totalHits() > 0) {130             for (SearchHit hit : hits) {131                 System.out.println("score:"+hit.getScore()+":\t"+hit.getSource());// .get("title")132             }133         } else {134             System.out.println("搜到0條結果");135         }136     }137 138 }

ElasticsearchGet

 

Elasticsearch5.0 Java Api(四) -- 檢索索引