{"id":1390,"date":"2023-03-19T11:07:52","date_gmt":"2023-03-19T03:07:52","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1390"},"modified":"2023-04-28T21:11:25","modified_gmt":"2023-04-28T13:11:25","slug":"elasticsearch-high-level-rest-api-search-query","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/19\/elasticsearch-high-level-rest-api-search-query\/","title":{"rendered":"ElasticSearch High Level REST API\uff082\uff09\u641c\u7d22\u67e5\u8be2"},"content":{"rendered":"

\u57fa\u672c\u641c\u7d22<\/h2>\n

\u5728search\u641c\u7d22\u4e2d\u5927\u90e8\u5206\u7684\u641c\u7d22\u6761\u4ef6\u6dfb\u52a0\u90fd\u53ef\u901a\u8fc7\u8bbe\u7f6eSearchSourceBuilder\u6765\u5b9e\u73b0\u3002\u5982\u4e0b\u4e3a\u4e00\u6bb5\u5e26\u6709\u5206\u9875\u7684\u7b80\u5355\u641c\u7d22\u67e5\u8be2\u793a\u4f8b<\/p>\n

<\/p>\n

@GetMapping("\/search\/base")\npublic String searchBase() {\n    SearchRequest searchRequest = new SearchRequest();\n    SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();\n    sourceBuilder.query(QueryBuilders.termQuery("name.keyword", "Joe.Ye"));\n    sourceBuilder.from(0);\n    sourceBuilder.size(5);\n    sourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS)); \/\/\u8bbe\u7f6e\u4e00\u4e2a\u53ef\u9009\u7684\u8d85\u65f6\uff0c\u63a7\u5236\u5141\u8bb8\u641c\u7d22\u7684\u65f6\u95f4\n    searchRequest.source(sourceBuilder);\n\n    try {\n        SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);\n        Long total = searchResponse.getHits().getTotalHits().value; \/\/\u83b7\u53d6\u5339\u914d\u7684\u603b\u6570\u91cf\n        System.out.println("\u603b\u8bb0\u5f55\u6570: " + total);\n        for (SearchHit hit : searchResponse.getHits().getHits()) {\n            float score = hit.getScore(); \/\/\u83b7\u5f97\u5206\u6570\uff0c\u5373\u5339\u914d\u5ea6\n            String source = hit.getSourceAsString();\n            log.info("score: {}, source: {}", score, source);\n        }\n        \/\/client.close();\n        return JSON.toJSONString(searchResponse);\n    } catch (IOException e) {\n        e.printStackTrace();\n    }\n    return "";\n}<\/code><\/pre>\n
Status: 200\n\u603b\u8bb0\u5f55\u6570: 4\nscore: 0.6931472, source: {"age":28,"height":175.2,"name":"Joe.Ye"}\nscore: 0.5389965, source: {"name":"Joe.Ye","email":"yezhou@yezhou.org","homepage":"http:\/\/www.appblog.cn"}\nscore: 0.5389965, source: {"name":"Joe.Ye","age":28,"homepage":"http:\/\/www.appblog.cn"}\nscore: 0.5389965, source: {"name":"Joe.Ye","email":"yezhou@yezhou.org","homepage":"http:\/\/www.appblog.cn"}<\/code><\/pre>\n
search\u67e5\u8be2\u7684\u8fd4\u56de\u503c\u4e3aSearchResponse<\/code>\uff0c\u8c03\u7528SearchResponse<\/code>\u7684getHits()<\/code>\u65b9\u6cd5\u4f1a\u83b7\u53d6SearchHits<\/code>\u5bf9\u8c61\uff0c\u7136\u540e\u518d\u901a\u8fc7SearchHits<\/code>\u7684getHits()<\/code>\u65b9\u6cd5\u5373\u8fd4\u56de\u4e00\u4e2aSearchHit[]<\/code>\u6570\u7ec4\u3002<\/p>\n
\u904d\u5386SearchHit[]<\/code>\u6570\u7ec4\u83b7\u53d6\u6bcf\u4e00\u4e2a\u5bf9\u8c61\uff0c\u901a\u8fc7hit.getScore()<\/code>\u53ef\u83b7\u53d6\u5206\u6570\uff0c\u5373\u641c\u7d22\u5339\u914d\u5ea6\u3002\u901a\u8fc7hit.getSourceAsString()<\/code>\u53ef\u5f97\u5230\u5bf9\u8c61\u7684json\u5b57\u7b26\u4e32\u3002<\/p>\n
\n
\u5907\u6ce8\uff1a\u5728\u4e0a\u8ff0\u67e5\u8be2\u4e2d\u7528\u5230\u4e86termQuery\u67e5\u8be2\uff0cES\u8fd8\u63d0\u4f9b\u4e86matchQuery\u67e5\u8be2\uff0c\u4e0d\u540c\u7684\u67e5\u8be2\u9700\u6c42\u4e2d\u9700\u8981\u9009\u62e9\u4e0d\u540c\u7684\u67e5\u8be2\uff0c\u5728\u6b64\u9700\u8981\u4e86\u89e3\u8fd9\u4e24\u4e2a\u67e5\u8be2\u7684\u533a\u522b\uff1a<\/p>\n<\/blockquote>\n
termQuery<\/code>: term\u4e3a\u4e0d\u4f7f\u7528\u5206\u8bcd\u5668\u67e5\u627e\uff0c\u7c7b\u4f3c\u7cbe\u786e\u67e5\u627e\u3002
\nmatchQuery<\/code>: mactch\u4e3a\u4f7f\u7528\u5206\u8bcd\u5668\u8fdb\u884c\u67e5\u627e\uff0c\u4f1a\u67e5\u8be2\u5230\u4e00\u4e9b\u8fd1\u4f3c\u5339\u914d\u7684\u5185\u5bb9\u3002<\/p>\n
SearchHit\u4f7f\u7528\u6c47\u603b<\/h2>\n
\u8981\u83b7\u53d6\u8fd4\u56de\u7684\u5185\u5bb9\uff0c\u9700\u8981\u83b7\u5f97SearchHit\uff0c\u4e0b\u9762\u603b\u7ed3\u4e0bSearchHit\u7684\u4e00\u4e9b\u4f7f\u7528\uff1a<\/p>\n
SearchHits hits = searchResponse.getHits();\nlong totalHits = hits.getTotalHits().value; \/\/\u67e5\u8be2\u547d\u4e2d\u603b\u6570\nfloat maxScore = hits.getMaxScore(); \/\/\u67e5\u8be2\u547d\u4e2d\u7684\u6700\u9ad8\u5206\u6570\n\/\/SearchHits\u904d\u5386\nSearchHit[] searchHits = hits.getHits();\nfor (SearchHit hit : searchHits) {\n\n}\n\/\/\u901a\u8fc7SearchHit\u8fd8\u53ef\u4ee5\u83b7\u53d6\u8fd4\u56de\u6570\u636e\u7684\u7d22\u5f15\u3001\u7c7b\u578b\u3001docId\u548c\u5f97\u5206\u7b49\u57fa\u672c\u4fe1\u606f\nString index = hit.getIndex(); \nString type = hit.getType();\nString id = hit.getId();\nfloat score = hit.getScore();\n\/\/hit\u8fd8\u53ef\u4ee5\u4ee5Json\u5b57\u7b26\u4e32\u6216Map\u7684\u5f62\u5f0f\u8fd4\u56de\u6570\u636e\nString sourceAsString = hit.getSourceAsString();\nMap<String, Object> sourceAsMap = hit.getSourceAsMap();\nString documentTitle = (String) sourceAsMap.get("title");\nList<Object> users = (List<Object>) sourceAsMap.get("user");\nMap<String, Object> innerObject = (Map<String, Object>) sourceAsMap.get("innerObject");<\/code><\/pre>\n
\u6307\u5b9a\u6392\u5e8f<\/h2>\n
\u6392\u5e8f\u6709\u4e24\u79cd\u6392\u5e8f\u65b9\u5f0f\uff0c\u7b2c\u4e00\u901a\u8fc7ScoreSortBuilder<\/code>\u5b9e\u73b0\u6309\u5206\u6570\uff08\u5373\u5339\u914d\u5ea6\uff09\u6392\u5e8f\uff1b\u7b2c\u4e8c\u79cd\u65b9\u5f0f\u901a\u8fc7\u6307\u5b9a\u5b57\u6bb5\u6765\u6392\u5e8f\uff0c\u5982\u901a\u8fc7_uid<\/code>\u5b57\u6bb5\u6392\u5e8f<\/p>\n
sourceBuilder.sort(new ScoreSortBuilder().order(SortOrder.DESC)); \/\/\u6309\u5206\u6570\uff08\u5373\u5339\u914d\u5ea6\uff09\u6392\u5e8f\nsourceBuilder.sort(new FieldSortBuilder("_uid").order(SortOrder.ASC)); \/\/\u901a\u8fc7\u6307\u5b9a\u5b57\u6bb5\u6765\u6392\u5e8f<\/code><\/pre>\n
\u5173\u95ed\u68c0\u7d22<\/h2>\n
\u6709\u65f6\u6211\u4eec\u53ea\u60f3\u8981\u77e5\u9053\u5230\u5e95\u5339\u914d\u4e86\u591a\u5c11\u6761\u8bb0\u5f55\uff0c\u4f46\u4e0d\u5173\u7cfb\u5177\u4f53\u6bcf\u6761\u8bb0\u5f55\u7684\u5185\u5bb9\uff0c\u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u53ef\u4ee5\u9009\u62e9\u5173\u95ed\u68c0\u7d22\uff0c\u4e0d\u53bb\u67e5\u8be2\u6bcf\u5929\u6570\u636e\u7684\u5185\u5bb9\uff0c\u53ef\u901a\u8fc7\u5982\u4e0b\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n
sourceBuilder.fetchSource(false);<\/code><\/pre>\n
\u5173\u95ed\u68c0\u7d22\u540e\uff0c\u53ea\u8fd4\u56de\u603b\u8bb0\u5f55\u6570\uff0c\u904d\u5386\u8f93\u51fa\u6bcf\u6761\u6570\u636e\u5747\u4e3a null<\/p>\n
\u53e6\u5916\u8fd8\u53ef\u4ee5\u901a\u8fc7SourceBuilder<\/code>\u63a5\u53d7\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u7ec4\uff0c\u6765\u63a7\u5236\u9700\u8981\u8fd4\u56de\u54ea\u4e9b\u5b57\u6bb5\uff0c\u6392\u9664\u54ea\u4e9b\u5b57\u6bb5\u3002\u5177\u4f53\u5b9e\u73b0\u5982\u4e0b\uff0c\u7b2c\u4e00\u4e2a\u6570\u7ec4\u53c2\u6570\u4e3a\u8981\u63a5\u53d7\u7684\u5b57\u6bb5\uff0c\u7b2c\u4e8c\u4e2a\u6570\u7ec4\u53c2\u6570\u4e3a\u8981\u6392\u9664\u7684\u5185\u5bb9\uff1a<\/p>\n
String[] includeFields = new String[] {"title", "user", "innerObject.*"};\nString[] excludeFields = new String[] {"_type"};\nsourceBuilder.fetchSource(includeFields, excludeFields);<\/code><\/pre>\n
\u9ad8\u4eae\u663e\u793a<\/h2>\n
\u901a\u8fc7\u5411SearchSourceBuilder<\/code>\u6dfb\u52a0HighlightBuilder<\/code>\u793a\u4f8b\u53ef\u6dfb\u52a0\u9ad8\u4eae\u663e\u793a\u529f\u80fd<\/p>\n
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();\nHighlightBuilder highlightBuilder = new HighlightBuilder();\nHighlightBuilder.Field highlightTitle = new HighlightBuilder.Field("title");\nhighlightTitle.highlighterType("unified"); \/\/\u5b57\u6bb5\u9ad8\u4eae\u663e\u793a\u7c7b\u578b\uff0c\u9ed8\u8ba4\u7528\u6807\u7b7e\u5305\u88f9\u9ad8\u4eae\u5b57\u8bcd\nhighlightBuilder.field(highlightTitle);\nsearchSourceBuilder.highlighter(highlightBuilder);<\/code><\/pre>\n
\u4ee5\u4e0a\u53ea\u662f\u5728\u67e5\u8be2\u4e2d\u52a0\u5165\u9ad8\u4eae\u663e\u793a\u7684\u529f\u80fd\uff0c\u90a3\u4e48\u6211\u4eec\u5982\u4f55\u5728\u67e5\u8be2\u7ed3\u679c\u4e2d\u83b7\u53d6\u5462\uff0c\u901a\u8fc7SearchHit<\/code>\u7684getHighlightFields()<\/code>\u65b9\u6cd5\u83b7\u53d6\u6211\u4eec\u9700\u8981\u5173\u952e\u5185\u5bb9\uff1a<\/p>\n
SearchHits hits = searchResponse.getHits();\nfor (SearchHit hit : hits.getHits()) {\n    Map highlightFields = hit.getHighlightFields();\n    HighlightField highlight = highlightFields.get("title");\n    Text[] fragments = highlight.fragments();\n    String fragmentString = fragments[0].string();\n}<\/code><\/pre>\n
\u805a\u5408\u64cd\u4f5c<\/h2>\n
\u83b7\u53d6\u5e73\u5747\u503c\u805a\u5408\u793a\u4f8b\uff0c\u6700\u5927\u503c\u3001\u6700\u5c0f\u503c\u3001\u6c42\u548c\u7c7b\u4f3c<\/p>\n
@GetMapping("search\/aggregation")\npublic void aggregation() {\n    RestHighLevelClient client = elasticClient.getRestHighLevelClient();\n    SearchRequest searchRequest = new SearchRequest();\n    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();\n    TermsAggregationBuilder aggregation = AggregationBuilders.terms("by_sex")\n            .field("sex.keyword");  \/\/\u82e5\u4e0d\u52a0keyword\uff0c\u5728text\u7c7b\u578b\u4e0a\u8fdb\u884c\u805a\u5408\u64cd\u4f5c\u65f6\u4f1a\u62a5\u9519\n    aggregation.subAggregation(AggregationBuilders.avg("avg_age")\n            .field("age"));  \/\/avg_age \u4e3a\u5b50\u805a\u5408\u540d\u79f0\uff0c\u540d\u79f0\u53ef\u968f\u610f\n    searchSourceBuilder.aggregation(aggregation);\n    searchRequest.source(searchSourceBuilder);\n    SearchResponse searchResponse = null;\n    try {\n        searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);\n    } catch (IOException e) {\n        e.printStackTrace();\n    }\n    Aggregations aggregations = searchResponse.getAggregations();\n    Terms bySexAggregation = aggregations.get("by_sex");\n    Terms.Bucket elasticBucket = bySexAggregation.getBucketByKey("\u5973\u6027");\n    Avg averageAge = elasticBucket.getAggregations().get("avg_age");\n    double avg = averageAge.getValue();\n    System.out.println("\u5973\u6027\u5e73\u5747\u5e74\u9f84\uff1a" + avg);\n}<\/code><\/pre>\n
Stats\u7edf\u8ba1<\/h2>\n
@GetMapping("search\/stats")\npublic void stats() {\n    RestHighLevelClient client = elasticClient.getRestHighLevelClient();\n    SearchRequest searchRequest = new SearchRequest();\n    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();\n    TermsAggregationBuilder aggregation = AggregationBuilders.terms("by_sex")\n            .field("sex.keyword");  \/\/by_sex\u4e3a\u805a\u5408\u540d\u79f0\uff0c\u540d\u79f0\u53ef\u968f\u610f\n    aggregation.subAggregation(AggregationBuilders.stats("stat_age")\n            .field("age"));  \/\/avg_age \u4e3a\u5b50\u805a\u5408\u540d\u79f0\uff0c\u540d\u79f0\u53ef\u968f\u610f\n    searchSourceBuilder.aggregation(aggregation);\n    searchRequest.source(searchSourceBuilder);\n    SearchResponse searchResponse = null;\n    try {\n        searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);\n    } catch (IOException e) {\n        e.printStackTrace();\n    }\n    Aggregations aggregations = searchResponse.getAggregations();\n    Terms bySexAggregation = aggregations.get("by_sex");\n    List<? extends Terms.Bucket> buckets = bySexAggregation.getBuckets();\n    for (Terms.Bucket bucket : buckets) {\n        Stats statAge = bucket.getAggregations().get("stat_age");\n        System.out.println(bucket.getKey()); \/\/\u83b7\u53d6\u5206\u7ec4\u540d\u79f0\n        System.out.println("\u5e73\u5747\u503c\uff1a" + statAge.getAvg());\n        System.out.println("\u603b\u6570\uff1a" + statAge.getSum());\n        System.out.println("\u6700\u5927\u503c\uff1a" + statAge.getMaxAsString());\n        System.out.println("\u6700\u5c0f\u503c\uff1a" + statAge.getMin());\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u57fa\u672c\u641c\u7d22 \u5728search\u641c\u7d22\u4e2d\u5927\u90e8\u5206\u7684\u641c\u7d22\u6761\u4ef6\u6dfb\u52a0\u90fd\u53ef\u901a\u8fc7\u8bbe\u7f6eSearchSourceBuilder\u6765\u5b9e\u73b0\u3002\u5982 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[301],"tags":[],"class_list":["post-1390","post","type-post","status-publish","format-standard","hentry","category-elasticsearch"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1390","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1390"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1390\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}