[ElasticSearch]Term精确匹配中文字符串短语
版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/SunnyYoona/article/details/51842221 1. 给定数据 curl -XPUT 'localhost:9200/test-index/stu/1' -d' { "name":"陈泽鹏", "sex":"boy", "college":"计算机学院" }'; curl -XPUT 'localhost:9200/test-index/stu/2' -d' { "name":"廖力生", "sex":"boy", "college":"通信学院" }'; curl -XPUT 'localhost:9200/test-index/stu/3' -d' { "name":"李源一", "sex":"girl", "college":"计算机学院" }'; curl -XPUT 'localhost:9200/test-index/stu/4' -d' { "name":"陈哲超", "sex":"girl", "college":"计算机学院" }'; curl -XPUT 'localhost:9200/test-index/stu/5' -d' { "name":"AA", "sex":"girl", "college":"计算机学院" }'; curl -XPUT 'localhost:9200/test-index/stu/6' -d' { "name":"bb", "sex":"girll", "college":"通信学院" }'; curl -XPUT 'localhost:9200/test-index/stu/7' -d' { "name":"方镜淇", "sex":"boy", "college":"电子工程学院" }'; curl -XPUT 'localhost:9200/test-index/stu/8' -d' { "name":"吴兴涵", "sex":"boy", "college":"计算机学院" }'; 2. 需求 我们想精确匹配出来自计算机学院的学生，所以我们就实现如下语句： QueryBuilder queryBuilder = QueryBuilders.termQuery("college", "计算机学院"); // Search SearchRequestBuilder searchRequestBuilder = client.prepareSearch(index); searchRequestBuilder.setTypes(type); searchRequestBuilder.setQuery(queryBuilder); // 执行 SearchResponse searchResponse = searchRequestBuilder.execute().actionGet(); 返回结果： 20:30:46.815 [main] INFO com.sjf.open.api.TermLevelQuery - ----------termMatch size 0 表示没有找到来自计算机学院的同学，这咋可能。。。。 3. 解决方案 3.1 解决方案一 把计算机学院拆分成多个汉字，再利用bool查询查找： // Query BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery(); boolQueryBuilder.must(QueryBuilders.termQuery("college", "计")); boolQueryBuilder.must(QueryBuilders.termQuery("college", "算")); boolQueryBuilder.must(QueryBuilders.termQuery("college", "机")); boolQueryBuilder.must(QueryBuilders.termQuery("college", "学")); boolQueryBuilder.must(QueryBuilders.termQuery("college", "院")); // Search SearchRequestBuilder searchRequestBuilder = client.prepareSearch(index); searchRequestBuilder.setTypes(type); searchRequestBuilder.setQuery(boolQueryBuilder); // 执行 SearchResponse searchResponse = searchRequestBuilder.execute().actionGet(); 返回结果： 20:34:53.022 [main] INFO com.sjf.open.api.Search - ----------hit source: id 5 source {college=计算机学院, sex=girll, name=AA} 20:34:53.028 [main] INFO com.sjf.open.api.Search - ----------hit source: id 8 source {college=计算机学院, sex=boy, name=吴兴涵} 20:34:53.029 [main] INFO com.sjf.open.api.Search - ----------hit source: id 1 source {college=计算机学院, sex=boy, name=陈泽鹏} 20:34:53.029 [main] INFO com.sjf.open.api.Search - ----------hit source: id 7 source {college=计算机学院, sex=boy, name=陈哲超} 20:34:53.029 [main] INFO com.sjf.open.api.Search - ----------hit source: id 3 source {college=计算机学院, sex=girll, name=李源一} 3.2 解决方案二 设置字段属性，设置为not_analyzed，再插入上面数据： curl -XPUT 'localhost:9200/test-index' -d' { "mappings":{ "stu":{ "properties":{ "name":{ "type":"string" }, "sex":{ "type":"string" }, "college":{ "type":"string", "index":"not_analyzed" } } } } }'; 具体分析：https://www.elastic.co/guide/en/elasticsearch/reference/2.3/query-dsl-term-query.html 再次查询： QueryBuilder queryBuilder = QueryBuilders.termQuery("college", "计算机学院"); // Search SearchRequestBuilder searchRequestBuilder = client.prepareSearch(index); searchRequestBuilder.setTypes(type); searchRequestBuilder.setQuery(queryBuilder); // 执行 SearchResponse searchResponse = searchRequestBuilder.execute().actionGet(); 输出结果： 20:34:53.022 [main] INFO com.sjf.open.api.Search - ----------hit source: id 5 source {college=计算机学院, sex=girll, name=AA} 20:34:53.028 [main] INFO com.sjf.open.api.Search - ----------hit source: id 8 source {college=计算机学院, sex=boy, name=吴兴涵} 20:34:53.029 [main] INFO com.sjf.open.api.Search - ----------hit source: id 1 source {college=计算机学院, sex=boy, name=陈泽鹏} 20:34:53.029 [main] INFO com.sjf.open.api.Search - ----------hit source: id 7 source {college=计算机学院, sex=boy, name=陈哲超} 20:34:53.029 [main] INFO com.sjf.open.api.Search - ----------hit source: id 3 source {college=计算机学院, sex=girll, name=李源一}
