java操作elasticsearch实现条件查询（match、multiMatch、term、terms、reange）
1、条件match query查询
//条件查询match query @Test public void test10() throws UnknownHostException { //1、指定es集群 cluster.name 是固定的key值，my-application是ES集群的名称 Settings settings = Settings.builder().put("cluster.name", "my-application").build(); //2.创建访问ES服务器的客户端 TransportClient client = new PreBuiltTransportClient(settings) //获取es主机中节点的ip地址及端口号(以下是单个节点案例) .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300)); QueryBuilder builder = QueryBuilders.matchQuery("interests", "changge"); SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get(); SearchHits hits = response.getHits(); for(SearchHit hit:hits) { System.out.println(hit.getSourceAsString()); //将获取的值转换成map的形式 Map<String, Object> map = hit.getSourceAsMap(); for(String key:map.keySet()) { System.out.println(key +" key对应的值为：" +map.get(key)); } } }
2、multimatch query查询
说明：查询的值在多个字段中进行匹配查询
//multiMatchQuery 查询的值在多个字段中进行匹配 @Test public void test11() throws UnknownHostException { //1、指定es集群 cluster.name 是固定的key值，my-application是ES集群的名称 Settings settings = Settings.builder().put("cluster.name", "my-application").build(); //2.创建访问ES服务器的客户端 TransportClient client = new PreBuiltTransportClient(settings) //获取es主机中节点的ip地址及端口号(以下是单个节点案例) .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300)); //第一个参数是查询的值，后面的参数是字段名，可以跟多个字段，用逗号隔开 QueryBuilder builder = QueryBuilders.multiMatchQuery("changge", "address","interests"); SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get(); SearchHits hits = response.getHits(); for(SearchHit hit:hits) { System.out.println(hit.getSourceAsString()); //将获取的值转换成map的形式 Map<String, Object> map = hit.getSourceAsMap(); for(String key:map.keySet()) { System.out.println(key +" key对应的值为：" +map.get(key)); } } }
3、term查询
说明：term查询是不支持分词查询的
//term查询 @Test public void test12() throws UnknownHostException { //1、指定es集群 cluster.name 是固定的key值，my-application是ES集群的名称 Settings settings = Settings.builder().put("cluster.name", "my-application").build(); //2.创建访问ES服务器的客户端 TransportClient client = new PreBuiltTransportClient(settings) //获取es主机中节点的ip地址及端口号(以下是单个节点案例) .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300)); //term查询是不进行分词的 QueryBuilder builder = QueryBuilders.termQuery("interests", "changge"); SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get(); SearchHits hits = response.getHits(); for(SearchHit hit:hits) { System.out.println(hit.getSourceAsString()); //将获取的值转换成map的形式 Map<String, Object> map = hit.getSourceAsMap(); for(String key:map.keySet()) { System.out.println(key +" key对应的值为：" +map.get(key)); } } }
term中文精确查询注意点：
当使用term查询中文时，比如查询"人类"，我们是查不出来的，因为字段设置了ik分词器，他会将“人类”分成“人”和“类”，所有针对这种情况，我们需要将该字段类型临时转成keword类型，转换成后当字段中有"人类很好"的文章，我们也查询不出来，只会查询出字段为人类的文章。如下：
//term中文查询 @Test public void test12() throws UnknownHostException { //1、指定es集群 cluster.name 是固定的key值，my-application是ES集群的名称 Settings settings = Settings.builder().put("cluster.name", "my-application").build(); //2.创建访问ES服务器的客户端 TransportClient client = new PreBuiltTransportClient(settings) //获取es主机中节点的ip地址及端口号(以下是单个节点案例) .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300)); //term查询是不进行分词的 QueryBuilder builder = QueryBuilders.termQuery("interests.keword", "人类"); SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get(); SearchHits hits = response.getHits(); for(SearchHit hit:hits) { System.out.println(hit.getSourceAsString()); //将获取的值转换成map的形式 Map<String, Object> map = hit.getSourceAsMap(); for(String key:map.keySet()) { System.out.println(key +" key对应的值为：" +map.get(key)); } } }
4、terms查询
说明：与term的区别在于terms可以同时匹配多个条件
//terms查询：与term区别在于可以在同个字段中同时匹配多个条件，但是不支持分词 public void test13() throws UnknownHostException { //1、指定es集群 cluster.name 是固定的key值，my-application是ES集群的名称 Settings settings = Settings.builder().put("cluster.name", "my-application").build(); //2.创建访问ES服务器的客户端 TransportClient client = new PreBuiltTransportClient(settings) //获取es主机中节点的ip地址及端口号(以下是单个节点案例) .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300)); //terms查询是不进行分词的 与term的区别在terms可以指定一个字段匹配多个查询内容 QueryBuilder builder = QueryBuilders.termsQuery("interests", "changge","旅游"); SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get(); SearchHits hits = response.getHits(); for(SearchHit hit:hits) { System.out.println(hit.getSourceAsString()); //将获取的值转换成map的形式 Map<String, Object> map = hit.getSourceAsMap(); for(String key:map.keySet()) { System.out.println(key +" key对应的值为：" +map.get(key)); } } }
5、reange 范围查询
//reange 范围查询（日期在多少之间等) @Test public void test14() throws UnknownHostException { //1、指定es集群 cluster.name 是固定的key值，my-application是ES集群的名称 Settings settings = Settings.builder().put("cluster.name", "my-application").build(); //2.创建访问ES服务器的客户端 TransportClient client = new PreBuiltTransportClient(settings) //获取es主机中节点的ip地址及端口号(以下是单个节点案例) .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300)); //rangeQurey 第一个参数为字段名，后面是范围 在设置日期格式 QueryBuilder builder = QueryBuilders.rangeQuery("birthday").from("1990-01-01").to("2000-10-10").format("yyyy-MM-dd"); SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get(); SearchHits hits = response.getHits(); for(SearchHit hit:hits) { System.out.println(hit.getSourceAsString()); //将获取的值转换成map的形式 Map<String, Object> map = hit.getSourceAsMap(); for(String key:map.keySet()) { System.out.println(key +" key对应的值为：" +map.get(key)); } } }
下一篇博客本人将书写java操作elasticsearch实现前缀查询、wildcard模糊查询、fuzzy模糊查询、ids查询。对后期博客感兴趣的朋友可以关注交流，转发请说明出处，本人的博客地址为：https://www.cnblogs.com/chenyuanbo/
技术在于交流！
