elasticsearch Java API汇总

2022-09-23 10:24:42

http://blog.csdn.net/changong28/article/details/38445805#comments

3.1 集群的连接

3.1.1 作为Elasticsearch节点

  1. 代码：
  2. import static org.elasticsearch.node.NodeBuilder.nodeBuilder;
  3. import org.elasticsearch.client.Client;
  4. import org.elasticsearch.node.Node;
  5. Node node = nodeBuilder().clusterName("escluster2").client(true).
  6. node();
  7. Client client = node.client();

3.1.2 使用Transport连接

  1. 代码：
  2. import org.elasticsearch.client.transport.TransportClient;
  3. import org.elasticsearch.common.settings.ImmutableSettings;
  4. import org.elasticsearch.common.settings.Settings;
  5. import org.elasticsearch.common.transport.InetSocketTransportAddress;
  6. Settings settings = ImmutableSettings.settingsBuilder().put("cluster.name", "escluster2").build();
  7. TransportClient client = new TransportClient(settings);
  8. client.addTransportAddress(new InetSocketTransportAddress("127.0.0.1",9300));

3.2 文档的CRUD

3.2.1 查询文档

  1. 代码：
  2. GetResponse response = client.prepareGet("library", "book", "1")
  3. .setFields("title", "_source")
  4. .execute().actionGet();

3.2.2 索引文档

  1. 代码：
  2. import org.elasticsearch.action.index.IndexResponse;
  3. import org.elasticsearch.client.Client;
  4. IndexResponse response = client.prepareIndex("library", "book", "2")
  5. .setSource("{ \"title\": \"Mastering ElasticSearch\"}")
  6. .execute().actionGet();

3.2.3 更新文档

  1. 代码：
  2. import org.elasticsearch.action.update.UpdateResponse;
  3. import org.elasticsearch.client.Client;
  4. import java.util.Map;
  5. import org.elasticsearch.common.collect.Maps;
  6. Map<String, Object> params = Maps.newHashMap();
  7. params.put("ntitle", "ElasticSearch Server Book");
  8. UpdateResponse response = client.prepareUpdate("library", "book", "2")
  9. .setScript("ctx._source.title = ntitle")
  10. .setScriptParams(params)
  11. .execute().actionGet();

3.2.4 删除文档

  1. 代码：
  2. import org.elasticsearch.action.delete.DeleteResponse;
  3. import org.elasticsearch.client.Client;
  4. DeleteResponse response = client.prepareDelete("library", "book", "2")
  5. .execute().actionGet();

3.3 Elasticsearch检索

3.3.1 Preparing a query

  1. 代码：
  2. import org.elasticsearch.action.search.SearchResponse;
  3. import org.elasticsearch.client.Client;
  4. import org.elasticsearch.search.SearchHit;
  5. SearchResponse response = client.prepareSearch("library")
  6. .addFields("title", "_source")
  7. .execute().actionGet();
  8. for(SearchHit hit: response.getHits().getHits()) {
  9. <span style="white-space:pre">    </span>System.out.println(hit.getId());
  10. <span style="white-space:pre">    </span>if (hit.getFields().containsKey("title")) {
  11. <span style="white-space:pre">        </span>System.out.println("field.title: "+ hit.getFields().get("title").getValue());
  12. <span style="white-space:pre">    </span>}
  13. <span style="white-space:pre">    </span>System.out.println("source.title: " + hit.getSource().get("title"));
  14. }

3.3.2 Building queries

  1. 代码：
  2. import org.elasticsearch.index.query.QueryBuilder;
  3. import org.elasticsearch.index.query.QueryBuilders;
  4. QueryBuilder queryBuilder = QueryBuilders
  5. .disMaxQuery()
  6. .add(QueryBuilders.termQuery("title", "Elastic"))
  7. .add(QueryBuilders.prefixQuery("title", "el"));
  8. System.out.println(queryBuilder.toString());
  9. SearchResponse response = client.prepareSearch("library")
  10. .setQuery(queryBuilder)
  11. .execute().actionGet();

3.3.3 Using the match all documents query

  1. 代码：
  2. queryBuilder = QueryBuilders.matchAllQuery()
  3. .boost(11f).normsField("title");

3.3.4 The match query

  1. 代码：
  2. queryBuilder = QueryBuilders
  3. .matchQuery("message", "a quick brown fox")
  4. .operator(Operator.AND)
  5. .zeroTermsQuery(ZeroTermsQuery.ALL);

3.3.5 Using the geo shape query

  1. 代码：
  2. queryBuilder = QueryBuilders.geoShapeQuery("location",
  3. ShapeBuilder.newRectangle()
  4. .topLeft(13, 53)
  5. .bottomRight(14, 52)
  6. .build());

3.3.6 Paging query

  1. 代码：
  2. SearchResponse response = client.prepareSearch("library")
  3. .setQuery(QueryBuilders.matchAllQuery())
  4. .setFrom(10)
  5. .setSize(20)
  6. .execute().actionGet();

3.3.7 Sorting

  1. 代码：
  2. SearchResponse response = client.prepareSearch("library")
  3. .setQuery(QueryBuilders.matchAllQuery())
  4. .addSort(SortBuilders.fieldSort("title"))
  5. .addSort("_score", SortOrder.DESC)
  6. .execute().actionGet()

3.3.8 Filtering

  1. 代码：
  2. FilterBuilder filterBuilder = FilterBuilders
  3. .andFilter(
  4. FilterBuilders.existsFilter("title").filterName("exist"),
  5. FilterBuilders.termFilter("title", "elastic")
  6. );
  7. SearchResponse response = client.prepareSearch("library")
  8. .setFilter(filterBuilder)
  9. .execute().actionGet();

3.3.9 Faceting

  1. 代码：
  2. FacetBuilder facetBuilder = FacetBuilders
  3. .filterFacet("test")
  4. .filter(FilterBuilders.termFilter("title", "elastic"));
  5. SearchResponse response = client.prepareSearch("library")
  6. .addFacet(facetBuilder)
  7. .execute().actionGet();

3.3.10 Highlighting

  1. 代码：
  2. SearchResponse response = client.prepareSearch("wikipedia")
  3. .addHighlightedField("title")
  4. .setQuery(QueryBuilders.termQuery("title", "actress"))
  5. .setHighlighterPreTags("<1>", "<2>")
  6. .setHighlighterPostTags("</1>", "</2>")
  7. .execute().actionGet();
  8. for(SearchHit hit: response.getHits().getHits()) {
  9. <span style="white-space:pre">    </span>HighlightField hField = hit.getHighlightFields().get("title");
  10. <span style="white-space:pre">    </span>for (Text t : hField.fragments()) {
  11. <span style="white-space:pre">        </span>System.out.println(t.string());
  12. <span style="white-space:pre">    </span>}
  13. }

3.3.11 Suggestions

  1. 代码：
  2. SearchResponse response = client.prepareSearch("wikipedia")
  3. .setQuery(QueryBuilders.matchAllQuery())
  4. .addSuggestion(new TermSuggestionBuilder("first_suggestion")
  5. .text("graphics designer")
  6. .field("_all"))
  7. .execute().actionGet();
  8. for( Entry<? extends Option> entry : response.getSuggest().getSuggestion("first_suggestion").getEntries()) {
  9. <span style="white-space:pre">    </span>System.out.println("Check for: " + entry.getText() + ". Options:");
  10. <span style="white-space:pre">    </span>for( Option option : entry.getOptions()) {
  11. <span style="white-space:pre">        </span>System.out.println("\t" + option.getText());
  12. <span style="white-space:pre">    </span>}
  13. }

3.3.12 Counting

  1. 代码：
  2. CountResponse response = client.prepareCount("library")
  3. .setQuery(QueryBuilders.termQuery("title", "elastic"))
  4. .execute().actionGet();

3.3.13 Scrolling

  1. 代码：
  2. SearchResponse responseSearch = client.prepareSearch("library")
  3. .setScroll("1m")
  4. .setSearchType(SearchType.SCAN)
  5. .execute().actionGet();
  6. String scrollId = responseSearch.getScrollId();
  7. SearchResponse response = client.prepareSearchScroll(scrollId).execute().actionGet();

3.3.14 Bulk

  1. 代码：
  2. BulkResponse response = client.prepareBulk()
  3. .add(client.prepareIndex("library", "book", "5")
  4. .setSource("{ \"title\" : \"Solr Cookbook\"}")
  5. .request())
  6. .add(client.prepareDelete("library", "book", "2").request()).execute().actionGet();

3.3.15 The delete by query

  1. 代码：
  2. DeleteByQueryResponse response = client.prepareDeleteByQuery("library")
  3. .setQuery(QueryBuilders.termQuery("title", "ElasticSearch"))
  4. .execute().actionGet();

3.3.16 Multi GET

  1. 代码：
  2. MultiGetResponse response = client.prepareMultiGet()
  3. .add("library", "book", "1", "2")
  4. .execute().actionGet();

3.3.16 Multi Search

  1. 代码：
  2. MultiSearchResponse response = client.prepareMultiSearch()
  3. .add(client.prepareSearch("library", "book").request())
  4. .add(client.prepareSearch("news").
  5. .setFilter(FilterBuilders.termFilter("tags", "important")))
  6. .execute().actionGet();

3.3.17 Building JSON queries and documents

  1. 代码：
  2. IndexResponse response = client
  3. .prepareIndex("library", "book", "2")
  4. .setSource("{ \"title\": \"Mastering ElasticSearch\"}")
  5. .execute().actionGet();
  6. Map<String, Object> m = Maps.newHashMap();
  7. m.put("1", "Introduction");
  8. m.put("2", "Basics");
  9. m.put("3", "And the rest");
  10. XContentBuilder json = XContentFactory.jsonBuilder().prettyPrint()
  11. .startObject()
  12. .field("id").value("2123")
  13. .field("lastCommentTime", new Date())
  14. .nullField("published")
  15. .field("chapters").map(m)
  16. .field("title", "Mastering ElasticSearch")
  17. .array("tags", "search", "ElasticSearch", "nosql")
  18. .field("values")
  19. .startArray()
  20. .value(1)
  21. .value(10)
  22. .endArray()
  23. .endObject();

3.4 The administration API

3.4.1 The cluster administration API

3.4.1.1 The cluster and indices health API

  1. 代码：
  2. ClusterHealthResponse response = client.admin().cluster()
  3. .prepareHealth("library")
  4. .execute().actionGet();

3.4.1.2 The cluster state API

  1. 代码：
  2. ClusterStateResponse response = client.admin().cluster()
  3. .prepareState()
  4. .execute().actionGet();

3.4.1.3 The update settings API

  1. 代码：
  2. Map<String, Object> map = Maps.newHashMap();
  3. map.put("indices.ttl.interval", "10m");
  4. ClusterUpdateSettingsResponse response = client.admin().cluster()
  5. .prepareUpdateSettings()
  6. .setTransientSettings(map)
  7. .execute().actionGet();

3.4.1.4 The reroute API

  1. 代码：
  2. ClusterRerouteResponse response = client.admin().cluster()
  3. .prepareReroute()
  4. .setDryRun(true)
  5. .add(new MoveAllocationCommand(new ShardId("library", 3), "G3czOt4HQbKZT1RhpPCULw",PvHtEMuRSJ6rLJ27AW3U6w"),
  6. new CancelAllocationCommand(new ShardId("library", 2), "G3czOt4HQbKZT1RhpPCULw",rue))
  7. .execute().actionGet();

3.4.1.5 The nodes information API

  1. 代码：
  2. NodesInfoResponse response = client.admin().cluster()
  3. .prepareNodesInfo()
  4. .setNetwork(true)
  5. .setPlugin(true)
  6. .execute().actionGet();

3.4.1.6 The node statistics API

  1. 代码：
  2. NodesStatsResponse response = client.admin().cluster()
  3. .prepareNodesStats()
  4. .all()
  5. .execute().actionGet();

3.4.1.7 The nodes hot threads API

  1. 代码：
  2. NodesHotThreadsResponse response = client.admin().cluster()
  3. .prepareNodesHotThreads()
  4. .execute().actionGet();

3.4.1.8 The nodes shutdown API

  1. 代码：
  2. NodesShutdownResponse response = client.admin().cluster()
  3. .prepareNodesShutdown()
  4. .execute().actionGet();

3.4.1.9 The search shards API

  1. 代码：
  2. ClusterSearchShardsResponse response = client.admin().cluster()
  3. .prepareSearchShards()
  4. .setIndices("library")
  5. .setRouting("12")
  6. .execute().actionGet();

3.4.2 The Indices administration API

3.4.2.1 The index existence API

  1. 代码：
  2. IndicesExistsResponse response = client.admin().indices()
  3. .prepareExists("books", "library")
  4. .execute().actionGet();

3.4.2.2 The Type existence API

  1. 代码：
  2. TypesExistsResponse response = client.admin().indices()
  3. .prepareTypesExists("library")
  4. .setTypes("book")
  5. .execute().actionGet();

3.4.2.3 The indices stats API

  1. 代码：
  2. IndicesStatsResponse response = client.admin().indices()
  3. .prepareStats("library")
  4. .all()
  5. .execute().actionGet();

3.4.2.4 Index status

  1. 代码：
  2. IndicesStatusResponse response = client.admin().indices()
  3. .prepareStatus("library")
  4. .setRecovery(true)
  5. .setSnapshot(true)
  6. .execute().actionGet();

3.4.2.5 Segments information API

  1. 代码：
  2. IndicesSegmentResponse response = client.admin().indices()
  3. .prepareSegments("library")
  4. .execute().actionGet();

3.4.2.6 Creating an index API

  1. 代码：
  2. CreateIndexResponse response = client.admin().indices()
  3. .prepareCreate("news")
  4. .setSettings(ImmutableSettings.settingsBuilder()
  5. .put("number_of_shards", 1))
  6. .addMapping("news", XContentFactory.jsonBuilder()
  7. .startObject()
  8. .startObject("news")
  9. .startObject("properties")
  10. .startObject("title")
  11. .field("analyzer", "whitespace")
  12. .field("type", "string")
  13. .endObject()
  14. .endObject()
  15. .endObject()
  16. .endObject())
  17. .execute().actionGet();

3.4.2.7 Deleting an index

  1. 代码：
  2. DeleteIndexResponse response = client.admin().indices()
  3. .prepareDelete("news")
  4. .execute().actionGet();

3.4.2.8 Closing an index

  1. 代码：
  2. CloseIndexResponse response = client.admin().indices()
  3. .prepareClose("library")
  4. .execute().actionGet();

3.4.2.9 Opening an index

  1. 代码：
  2. OpenIndexResponse response = client.admin().indices()
  3. .prepareOpen("library")
  4. .execute().actionGet();

3.4.2.10 The Refresh API

  1. 代码：
  2. RefreshResponse response = client.admin().indices()
  3. .prepareRefresh("library")
  4. .execute().actionGet();

3.4.2.11 The Flush API

  1. 代码：
  2. FlushResponse response = client.admin().indices()
  3. .prepareFlush("library")
  4. .setFull(false)
  5. .execute().actionGet();

3.4.2.12 The Optimize API

  1. 代码：
  2. OptimizeResponse response = client.admin().indices()
  3. .prepareOptimize("library")
  4. .setMaxNumSegments(2)
  5. .setFlush(true)
  6. .setOnlyExpungeDeletes(false)
  7. .execute().actionGet();

3.4.2.13 The put mapping API

  1. 代码：
  2. PutMappingResponse response = client.admin().indices()
  3. .preparePutMapping("news")
  4. .setType("news")
  5. .setSource(XContentFactory.jsonBuilder()
  6. .startObject()
  7. .startObject("news")
  8. .startObject("properties")
  9. .startObject("title")
  10. .field("analyzer", "whitespace")
  11. .field("type", "string")
  12. .endObject()
  13. .endObject()
  14. .endObject()
  15. .endObject())
  16. .execute().actionGet();

3.4.2.14 The delete mapping API

  1. 代码：
  2. DeleteMappingResponse response = client.admin().indices()
  3. .prepareDeleteMapping("news")
  4. .setType("news")
  5. .execute().actionGet();

3.4.2.15 The gateway snapshot API

  1. 代码：
  2. GatewaySnapshotResponse response = client.admin().indices()
  3. .prepareGatewaySnapshot("news")
  4. .execute().actionGet();

3.4.2.16 The aliases API

  1. 代码：
  2. IndicesAliasesResponse response = client.admin().indices()
  3. .prepareAliases()
  4. .addAlias("news", "n")
  5. .addAlias("library", "elastic_books",
  6. FilterBuilders.termFilter("title", "elasticsearch"))
  7. .removeAlias("news", "current_news")
  8. .execute().actionGet();

3.4.2.17 The get aliases API

  1. 代码：
  2. IndicesGetAliasesResponse response = client.admin().indices()
  3. .prepareGetAliases("elastic_books", "n")
  4. .execute().actionGet();

3.4.2.18 The aliases exists API

  1. 代码：
  2. AliasesExistResponse response = client.admin().indices()
  3. .prepareAliasesExist("elastic*", "unknown")
  4. .execute().actionGet();

3.4.2.19 The clear cache API

  1. 代码：
  2. ClearIndicesCacheResponse response = client.admin().indices()
  3. .prepareClearCache("library")
  4. .setFieldDataCache(true)
  5. .setFields("title")
  6. .setFilterCache(true)
  7. .setIdCache(true)
  8. .execute().actionGet();

3.4.2.20 The update settings API

  1. 代码：
  2. UpdateSettingsResponse response = client.admin().indices()
  3. .prepareUpdateSettings("library")
  4. .setSettings(ImmutableSettings.builder()
  5. .put("index.number_of_replicas", 2))
  6. .execute().actionGet();

3.4.2.21 The analyze API

  1. 代码：
  2. AnalyzeResponse response = client.admin().indices()
  3. .prepareAnalyze("library", "ElasticSearch Servers")
  4. .setTokenizer("whitespace")
  5. .setTokenFilters("nGram")
  6. .execute().actionGet();

3.4.2.22 The put template API

  1. 代码：
  2. PutIndexTemplateResponse response = client.admin().indices()
  3. .preparePutTemplate("my_template")
  4. .setTemplate("product*")
  5. .setSettings(ImmutableSettings.builder()
  6. .put("index.number_of_replicas", 2)
  7. .put("index.number_of_shards", 1))
  8. .addMapping("item", XContentFactory.jsonBuilder()
  9. .startObject()
  10. .startObject("item")
  11. .startObject("properties")
  12. .startObject("title")
  13. .field("type", "string")
  14. .endObject()
  15. .endObject()
  16. .endObject()
  17. .endObject())
  18. .execute().actionGet();

3.4.2.23 The delete template API

  1. 代码：
  2. DeleteIndexTemplateResponse response = client.admin().indices()
  3. .prepareDeleteTemplate("my_*")
  4. .execute().actionGet();

3.4.2.24 The validate query API

  1. 代码：
  2. ValidateQueryResponse response = client.admin().indices()
  3. .prepareValidateQuery("library")
  4. .setExplain(true)
  5. .setQuery(XContentFactory.jsonBuilder()
  6. .startObject()
  7. .field("name").value("elastic search")
  8. .endObject().bytes())
  9. .execute().actionGet();

3.4.2.25 The put warmer API

  1. 代码：
  2. PutWarmerResponse response = client.admin().indices()
  3. .preparePutWarmer("library_warmer")
  4. .setSearchRequest(client.prepareSearch("library")
  5. .addFacet(FacetBuilders
  6. .termsFacet("tags").field("tags")))
  7. .execute().actionGet();

3.4.2.26 The delete warmer API

    1. 代码：
    2. DeleteWarmerResponse response = client.admin().indices()
    3. .prepareDeleteWarmer()
    4. .setName("library_*")
    5. .execute().actionGet();
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