9 RestClient客户端操作文档

1. match_all

@GetMapping("matchAll")public void matchAll() throws IOException {//1. 准备requestSearchRequest request = new SearchRequest("hotel");//2. 组织DSL参数request.source().query(QueryBuilders.matchAllQuery());SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);//3.解析结果SearchHits searchHits = response.getHits();//4. 查询总条数long value = searchHits.getTotalHits().value;System.out.println("总条数： " + value);//5.  数据SearchHit[] hits = searchHits.getHits();for (SearchHit hit: hits) {String json = hit.getSourceAsString();System.out.println(json);}}

2024-06-24 00:57:38.000  INFO 8968 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2024-06-24 00:57:38.000  INFO 8968 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2024-06-24 00:57:38.000  INFO 8968 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 0 ms
总条数： 4
{"address":"柳州东路1号","brand":"如家","business":"弘阳商圈","city":"南京市浦口区","id":1,"location":"33.33,131.33","name":"如家","pic":"http://www.bai.com/images/rujia.png","price":189,"score":7,"starName":"二星"}
{"address":"月华西路2号","brand":"7天","business":"江宁商圈","city":"南京市江宁区","id":2,"location":"33.33,131.35","name":"7天","pic":"http://www.bai.com/images/7.png","price":188,"score":7,"starName":"二星"}
{"address":"洪武北路1号","brand":"四季","business":"新街口商圈","city":"南京市玄武区","id":3,"location":"33.35,131.36","name":"四季","pic":"http://www.bai.com/images/7.png","price":489,"score":8,"starName":"3星"}
{"address":"是单独发2号","brand":"四季如春","business":"新街口商圈","city":"南京市鼓楼区","id":4,"location":"66.66,133.36","name":"四季如春","pic":"http://www.qiniu.com/images/xxx.png","price":999,"score":9,"starName":"五星"}

2.全文检索查询

单字段查询

//单字段查询@GetMapping("singleMatch")public void singleMatch() throws IOException {//1. 准备requestSearchRequest request = new SearchRequest("hotel");//2. 组织DSL参数request.source().query(QueryBuilders.matchQuery("name","四季如春"));SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);//3.解析结果SearchHits searchHits = response.getHits();//4. 查询总条数long value = searchHits.getTotalHits().value;System.out.println("总条数： " + value);//5.  数据SearchHit[] hits = searchHits.getHits();for (SearchHit hit: hits) {String json = hit.getSourceAsString();System.out.println(json);}}

name搜索字段参与了分词，因此会查询出两条记录

2024-06-24 01:12:58.956  INFO 7784 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2024-06-24 01:12:58.957  INFO 7784 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed initialization in 1 ms
总条数： 2
{"address":"是单独发2号","brand":"四季如春","business":"新街口商圈","city":"南京市鼓楼区","id":4,"location":"66.66,133.36","name":"四季如春","pic":"http://www.qiniu.com/images/xxx.png","price":999,"score":9,"starName":"五星"}
{"address":"洪武北路1号","brand":"四季","business":"新街口商圈","city":"南京市玄武区","id":3,"location":"33.35,131.36","name":"四季","pic":"http://www.bai.com/images/7.png","price":489,"score":8,"starName":"3星"}
2024-06-24 01:13:29.036 ERROR 7784 --- [rRegistryThread] c.xxl.job.core.util.XxlJobRemotingUtil   : Connection refused: connect

多字段查询

//多字段查询@GetMapping("multiMatch")public void multiMatch() throws IOException {//1. 准备requestSearchRequest request = new SearchRequest("hotel");//2. 组织DSL参数request.source().query(QueryBuilders.multiMatchQuery("四季如春","name","brand"));SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);//3.解析结果SearchHits searchHits = response.getHits();//4. 查询总条数long value = searchHits.getTotalHits().value;System.out.println("总条数： " + value);//5.  数据SearchHit[] hits = searchHits.getHits();for (SearchHit hit: hits) {String json = hit.getSourceAsString();System.out.println(json);}}

2024-06-24 01:15:22.728  INFO 4552 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2024-06-24 01:15:22.730  INFO 4552 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 2 ms
总条数： 2
{"address":"是单独发2号","brand":"四季如春","business":"新街口商圈","city":"南京市鼓楼区","id":4,"location":"66.66,133.36","name":"四季如春","pic":"http://www.qiniu.com/images/xxx.png","price":999,"score":9,"starName":"五星"}
{"address":"洪武北路1号","brand":"四季","business":"新街口商圈","city":"南京市玄武区","id":3,"location":"33.35,131.36","name":"四季","pic":"http://www.bai.com/images/7.png","price":489,"score":8,"starName":"3星"}
2024-06-24 01:15:43.546 ERROR 4552 --- [rRegistryThread] c.xxl.job.core.util.XxlJobRemotingUtil   : Connection refused: connect

term查询

@GetMapping("term")public void term() throws IOException {//1. 准备requestSearchRequest request = new SearchRequest("hotel");//2. 组织DSL参数request.source().query(QueryBuilders.termQuery("city","南京市浦口区"));SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);//3.解析结果SearchHits searchHits = response.getHits();//4. 查询总条数long value = searchHits.getTotalHits().value;System.out.println("总条数： " + value);//5.  数据SearchHit[] hits = searchHits.getHits();for (SearchHit hit: hits) {String json = hit.getSourceAsString();System.out.println(json);}}

2024-06-24 01:19:07.854  INFO 6212 --- [nio-8080-exec-2] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2024-06-24 01:19:07.854  INFO 6212 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2024-06-24 01:19:07.855  INFO 6212 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed initialization in 1 ms
总条数： 1
{"address":"柳州东路1号","brand":"如家","business":"弘阳商圈","city":"南京市浦口区","id":1,"location":"33.33,131.33","name":"如家","pic":"http://www.bai.com/images/rujia.png","price":189,"score":7,"starName":"二星"}

range范围查询

@GetMapping("range")public void range() throws IOException {//1. 准备requestSearchRequest request = new SearchRequest("hotel");//2. 组织DSL参数request.source().query(QueryBuilders.rangeQuery("price").gte(200).lt(500));SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);//3.解析结果SearchHits searchHits = response.getHits();//4. 查询总条数long value = searchHits.getTotalHits().value;System.out.println("总条数： " + value);//5.  数据SearchHit[] hits = searchHits.getHits();for (SearchHit hit: hits) {String json = hit.getSourceAsString();System.out.println(json);}}

2024-06-24 01:21:50.603  INFO 8916 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2024-06-24 01:21:50.604  INFO 8916 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 1 ms
总条数： 1
{"address":"洪武北路1号","brand":"四季","business":"新街口商圈","city":"南京市玄武区","id":3,"location":"33.35,131.36","name":"四季","pic":"http://www.bai.com/images/7.png","price":489,"score":8,"starName":"3星"}

bool复合查询

@GetMapping("boolQuery")public void boolQuery() throws IOException {//1. 准备requestSearchRequest request = new SearchRequest("hotel");//2. 组织DSL参数BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();//添加must条件boolQuery.must(QueryBuilders.termQuery("city","南京市浦口区"));//添加filter条件boolQuery.filter(QueryBuilders.rangeQuery("price").lt(200));request.source().query(boolQuery);SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);//3.解析结果SearchHits searchHits = response.getHits();//4. 查询总条数long value = searchHits.getTotalHits().value;System.out.println("总条数： " + value);//5.  数据SearchHit[] hits = searchHits.getHits();for (SearchHit hit: hits) {String json = hit.getSourceAsString();System.out.println(json);}}

2024-06-24 01:26:50.886  INFO 15052 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2024-06-24 01:26:50.886  INFO 15052 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 0 ms
总条数： 1
{"address":"柳州东路1号","brand":"如家","business":"弘阳商圈","city":"南京市浦口区","id":1,"location":"33.33,131.33","name":"如家","pic":"http://www.bai.com/images/rujia.png","price":189,"score":7,"starName":"二星"}
2024-06-24 01:27:15.288 ERROR 15052 --- [rRegistryThread] c.xxl.job.core.util.XxlJobRemotingUtil   : Connection refused: connect