ElasticSearch7.3学习(二十三)----RestHighLevelClient Java api实现match_all、ids、match、term、multi_match、bool、filter、sort等不同的搜索方式
1、数据准备
首先创建book索引
PUT /book/
{
"settings": {
"number_of_shards": 1,
"number_of_replicas": 0
},
"mappings": {
"properties": {
"name": {
"type": "text",
"analyzer": "ik_max_word",
"search_analyzer": "ik_smart"
},
"description": {
"type": "text",
"analyzer": "ik_max_word",
"search_analyzer": "ik_smart"
},
"studymodel": {
"type": "keyword"
},
"price": {
"type": "double"
},
"timestamp": {
"type": "date",
"format": "yyyy-MM-dd HH:mm:ss||yyyy-MM-dd||epoch_millis"
},
"pic": {
"type": "text",
"index": false
}
}
}
}添加测试数据
PUT /book/_doc/1
{
"name": "Bootstrap开发",
"description": "Bootstrap是一个非常流行的开发框架。此开发框架可以帮助不擅长css页面开发的程序人员轻松的实现一个css，不受浏览器限制的精美界面css效果。",
"studymodel": "201002",
"price": 38.6,
"timestamp": "2019-08-25 19:11:35",
"pic": "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags": [
"bootstrap",
"dev"
]
}
PUT /book/_doc/2
{
"name": "java编程思想",
"description": "java语言是世界第一编程语言，在软件开发领域使用人数最多。",
"studymodel": "201001",
"price": 68.6,
"timestamp": "2019-08-25 19:11:35",
"pic": "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags": [
"java",
"dev"
]
}
PUT /book/_doc/3
{
"name": "spring开发基础",
"description": "spring 在java领域非常流行，java程序员都在用。",
"studymodel": "201001",
"price": 88.6,
"timestamp": "2019-08-24 19:11:35",
"pic": "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags": [
"spring",
"java"
]
}2、match_all搜索
match_all用来搜索全部记录，先回顾下语法
GET /book/_search
{
"query": {
"match_all": {}
}
}返回
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 3,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "book",
"_type" : "_doc",
"_id" : "1",
"_score" : 1.0,
"_source" : {
"name" : "Bootstrap开发",
"description" : "Bootstrap是一个非常流行的开发框架。此开发框架可以帮助不擅长css页面开发的程序人员轻松的实现一个css，不受浏览器限制的精美界面css效果。",
"studymodel" : "201002",
"price" : 38.6,
"timestamp" : "2019-08-25 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"bootstrap",
"dev"
]
}
},
{
"_index" : "book",
"_type" : "_doc",
"_id" : "2",
"_score" : 1.0,
"_source" : {
"name" : "java编程思想",
"description" : "java语言是世界第一编程语言，在软件开发领域使用人数最多。",
"studymodel" : "201001",
"price" : 68.6,
"timestamp" : "2019-08-25 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"java",
"dev"
]
}
},
{
"_index" : "book",
"_type" : "_doc",
"_id" : "3",
"_score" : 1.0,
"_source" : {
"name" : "spring开发基础",
"description" : "spring 在java领域非常流行，java程序员都在用。",
"studymodel" : "201001",
"price" : 88.6,
"timestamp" : "2019-08-24 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"spring",
"java"
]
}
}
]
}
}Java代码
@Test
public void testSearchAll() throws IOException {
//1构建搜索请求
SearchRequest searchRequest = new SearchRequest("book");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.matchAllQuery());
//获取某些字段
// searchSourceBuilder.fetchSource(new String[]{"name"}, new String[]{});
searchRequest.source(searchSourceBuilder);
//2执行搜索
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
//3获取结果
SearchHits hits = searchResponse.getHits();
//数据数据
SearchHit[] searchHits = hits.getHits();
System.out.println("--------------------------");
for (SearchHit hit : searchHits) {
String id = hit.getId();
float score = hit.getScore();
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
String name = (String) sourceAsMap.get("name");
String description = (String) sourceAsMap.get("description");
Double price = (Double) sourceAsMap.get("price");
System.out.println("name:" + name);
System.out.println("description:" + description);
System.out.println("price:" + price);
System.out.println("==========================");
}
}返回结果
3、IDs搜索
IDs用来搜索指定id的记录，先回顾下语法
GET /book/_search
{
"query": {
"ids": {
"values": [1,4,100]
}
}
}只有id为1才存在数据，id为4，id为100均无数据
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "book",
"_type" : "_doc",
"_id" : "1",
"_score" : 1.0,
"_source" : {
"name" : "Bootstrap开发",
"description" : "Bootstrap是一个非常流行的开发框架。此开发框架可以帮助不擅长css页面开发的程序人员轻松的实现一个css，不受浏览器限制的精美界面css效果。",
"studymodel" : "201002",
"price" : 38.6,
"timestamp" : "2019-08-25 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"bootstrap",
"dev"
]
}
}
]
}
}Java代码
//ids搜索
@Test
public void testSearchIds() throws IOException {
//1构建搜索请求
SearchRequest searchRequest = new SearchRequest("book");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.idsQuery().addIds("1","4","100"));
searchRequest.source(searchSourceBuilder);
//2执行搜索
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
//3获取结果
SearchHits hits = searchResponse.getHits();
//数据数据
SearchHit[] searchHits = hits.getHits();
System.out.println("--------------------------");
for (SearchHit hit : searchHits) {
String id = hit.getId();
float score = hit.getScore();
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
String name = (String) sourceAsMap.get("name");
String description = (String) sourceAsMap.get("description");
Double price = (Double) sourceAsMap.get("price");
System.out.println("id:" + id);
System.out.println("name:" + name);
System.out.println("description:" + description);
System.out.println("price:" + price);
System.out.println("==========================");
}
}返回结果
4、match搜索
match就是普通的分词搜索，先回顾下语法
GET /book/_search
{
"query": {
"match": {
"description": "java程序员"
}
}
}返回结果
{
"took" : 88,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 1.9788694,
"hits" : [
{
"_index" : "book",
"_type" : "_doc",
"_id" : "3",
"_score" : 1.9788694,
"_source" : {
"name" : "spring开发基础",
"description" : "spring 在java领域非常流行，java程序员都在用。",
"studymodel" : "201001",
"price" : 88.6,
"timestamp" : "2019-08-24 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"spring",
"java"
]
}
},
{
"_index" : "book",
"_type" : "_doc",
"_id" : "2",
"_score" : 0.51124346,
"_source" : {
"name" : "java编程思想",
"description" : "java语言是世界第一编程语言，在软件开发领域使用人数最多。",
"studymodel" : "201001",
"price" : 68.6,
"timestamp" : "2019-08-25 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"java",
"dev"
]
}
}
]
}
}Java代码
//match搜索 普通搜索
@Test
public void testSearchMatch() throws IOException {
//1构建搜索请求
SearchRequest searchRequest = new SearchRequest("book");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.matchQuery("description", "java程序员"));
searchRequest.source(searchSourceBuilder);
//2执行搜索
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
//3获取结果
SearchHits hits = searchResponse.getHits();
//数据数据
SearchHit[] searchHits = hits.getHits();
System.out.println("--------------------------");
for (SearchHit hit : searchHits) {
String id = hit.getId();
float score = hit.getScore();
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
String name = (String) sourceAsMap.get("name");
String description = (String) sourceAsMap.get("description");
Double price = (Double) sourceAsMap.get("price");
System.out.println("id:" + id);
System.out.println("name:" + name);
System.out.println("description:" + description);
System.out.println("price:" + price);
System.out.println("==========================");
}
}返回结果
5、term搜索
不会对搜索关键词进行分词，代表精确匹配
GET /book/_search
{
"query": {
"term": {
"description": "java程序员"
}
}
}无结果返回，原因description已被分词，无java程序员这个单独词汇
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 0,
"relation" : "eq"
},
"max_score" : null,
"hits" : [ ]
}
}Java代码
//term 搜索
@Test
public void testSearchTerm() throws IOException {
//1构建搜索请求
SearchRequest searchRequest = new SearchRequest("book");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.termQuery("description", "java程序员"));
searchRequest.source(searchSourceBuilder);
//2执行搜索
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
//3获取结果
SearchHits hits = searchResponse.getHits();
//数据数据
SearchHit[] searchHits = hits.getHits();
System.out.println("--------------------------");
for (SearchHit hit : searchHits) {
String id = hit.getId();
float score = hit.getScore();
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
String name = (String) sourceAsMap.get("name");
String description = (String) sourceAsMap.get("description");
Double price = (Double) sourceAsMap.get("price");
System.out.println("id:" + id);
System.out.println("name:" + name);
System.out.println("description:" + description);
System.out.println("price:" + price);
System.out.println("==========================");
}
}同样无返回结果。
6、multi_match多字段搜索
同时匹配多个字段进行搜索，先回顾下语法
GET /book/_search
{
"query": {
"multi_match": {
"query": "java程序员",
"fields": [
"name",
"description"
]
}
}
}将name，description中包含关键词的结果返回
{
"took" : 54,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 1.9788694,
"hits" : [
{
"_index" : "book",
"_type" : "_doc",
"_id" : "3",
"_score" : 1.9788694,
"_source" : {
"name" : "spring开发基础",
"description" : "spring 在java领域非常流行，java程序员都在用。",
"studymodel" : "201001",
"price" : 88.6,
"timestamp" : "2019-08-24 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"spring",
"java"
]
}
},
{
"_index" : "book",
"_type" : "_doc",
"_id" : "2",
"_score" : 0.9331132,
"_source" : {
"name" : "java编程思想",
"description" : "java语言是世界第一编程语言，在软件开发领域使用人数最多。",
"studymodel" : "201001",
"price" : 68.6,
"timestamp" : "2019-08-25 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"java",
"dev"
]
}
}
]
}
}Java代码
//multi_match搜索 多字段搜索
@Test
public void testSearchMultiMatch() throws IOException {
//1构建搜索请求
SearchRequest searchRequest = new SearchRequest("book");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(QueryBuilders.multiMatchQuery("java程序员","name","description"));
searchRequest.source(searchSourceBuilder);
//2执行搜索
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
//3获取结果
SearchHits hits = searchResponse.getHits();
//数据数据
SearchHit[] searchHits = hits.getHits();
System.out.println("--------------------------");
for (SearchHit hit : searchHits) {
String id = hit.getId();
float score = hit.getScore();
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
String name = (String) sourceAsMap.get("name");
String description = (String) sourceAsMap.get("description");
Double price = (Double) sourceAsMap.get("price");
System.out.println("id:" + id);
System.out.println("name:" + name);
System.out.println("description:" + description);
System.out.println("price:" + price);
System.out.println("==========================");
}
}返回结果
7、bool搜索
bool搜索类似于数据库中的and or关键词，先回顾下语法，搜索name、description必须包含java程序员，或者studymodel包含201001的数据
GET /book/_search
{
"query": {
"bool": {
"must": [
{
"multi_match": {
"query": "java程序员",
"fields": [
"name",
"description"
]
}
}
],
"should": [
{
"match": {
"studymodel": "201001"
}
}
]
}
}
}返回结果
{
"took" : 50,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 2.448873,
"hits" : [
{
"_index" : "book",
"_type" : "_doc",
"_id" : "3",
"_score" : 2.448873,
"_source" : {
"name" : "spring开发基础",
"description" : "spring 在java领域非常流行，java程序员都在用。",
"studymodel" : "201001",
"price" : 88.6,
"timestamp" : "2019-08-24 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"spring",
"java"
]
}
},
{
"_index" : "book",
"_type" : "_doc",
"_id" : "2",
"_score" : 1.4031168,
"_source" : {
"name" : "java编程思想",
"description" : "java语言是世界第一编程语言，在软件开发领域使用人数最多。",
"studymodel" : "201001",
"price" : 68.6,
"timestamp" : "2019-08-25 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"java",
"dev"
]
}
}
]
}
}Java代码
//bool搜索
@Test
public void testSearchBool() throws IOException {
//1构建搜索请求
SearchRequest searchRequest = new SearchRequest("book");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//构建multiMatch请求
MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery("java程序员", "name", "description");
//构建match请求
MatchQueryBuilder matchQueryBuilder = QueryBuilders.matchQuery("studymodel", "201001");
BoolQueryBuilder boolQueryBuilder=QueryBuilders.boolQuery();
boolQueryBuilder.must(multiMatchQueryBuilder);
boolQueryBuilder.should(matchQueryBuilder);
searchSourceBuilder.query(boolQueryBuilder);
searchRequest.source(searchSourceBuilder);
//2执行搜索
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
//3获取结果
SearchHits hits = searchResponse.getHits();
//数据数据
SearchHit[] searchHits = hits.getHits();
System.out.println("--------------------------");
for (SearchHit hit : searchHits) {
String id = hit.getId();
float score = hit.getScore();
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
String name = (String) sourceAsMap.get("name");
String description = (String) sourceAsMap.get("description");
Double price = (Double) sourceAsMap.get("price");
System.out.println("id:" + id);
System.out.println("name:" + name);
System.out.println("description:" + description);
System.out.println("price:" + price);
System.out.println("==========================");
}
}返回结果
8、filter过滤
对搜索进行过滤，注意与query进行区别，先回顾下语法，搜索name、description必须包含java程序员，或者studymodel包含201001，price在50至70范围内
GET /book/_search
{
"query": {
"bool": {
"must": [
{
"multi_match": {
"query": "java程序员",
"fields": [
"name",
"description"
]
}
}
],
"should": [
{
"match": {
"studymodel": "201001"
}
}
],
"filter": {
"range": {
"price": {
"gte": 50,
"lte": 70
}
}
}
}
}
}返回结果
{
"took" : 1,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.4031168,
"hits" : [
{
"_index" : "book",
"_type" : "_doc",
"_id" : "2",
"_score" : 1.4031168,
"_source" : {
"name" : "java编程思想",
"description" : "java语言是世界第一编程语言，在软件开发领域使用人数最多。",
"studymodel" : "201001",
"price" : 68.6,
"timestamp" : "2019-08-25 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"java",
"dev"
]
}
}
]
}
}Java代码
//filter搜索
@Test
public void testSearchFilter() throws IOException {
//1构建搜索请求
SearchRequest searchRequest = new SearchRequest("book");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//构建multiMatch请求
MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery("java程序员", "name", "description");
//构建match请求
MatchQueryBuilder matchQueryBuilder = QueryBuilders.matchQuery("studymodel", "201001");
BoolQueryBuilder boolQueryBuilder=QueryBuilders.boolQuery();
boolQueryBuilder.must(multiMatchQueryBuilder);
boolQueryBuilder.should(matchQueryBuilder);
boolQueryBuilder.filter(QueryBuilders.rangeQuery("price").gte(50).lte(70));
searchSourceBuilder.query(boolQueryBuilder);
searchRequest.source(searchSourceBuilder);
//2执行搜索
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
//3获取结果
SearchHits hits = searchResponse.getHits();
//数据数据
SearchHit[] searchHits = hits.getHits();
System.out.println("--------------------------");
for (SearchHit hit : searchHits) {
String id = hit.getId();
float score = hit.getScore();
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
String name = (String) sourceAsMap.get("name");
String description = (String) sourceAsMap.get("description");
Double price = (Double) sourceAsMap.get("price");
System.out.println("id:" + id);
System.out.println("name:" + name);
System.out.println("description:" + description);
System.out.println("price:" + price);
System.out.println("==========================");
}
}返回结果
9、sort排序
对搜索进行排序，注意与query进行区别，先回顾下语法，搜索name、description必须包含java程序员，或者studymodel包含201001，price在50至90范围内，按照price升序
GET /book/_search
{
"query": {
"bool": {
"must": [
{
"multi_match": {
"query": "java程序员",
"fields": [
"name",
"description"
]
}
}
],
"should": [
{
"match": {
"studymodel": "201001"
}
}
],
"filter": {
"range": {
"price": {
"gte": 50,
"lte": 90
}
}
}
}
},
"sort": [
{
"price": {
"order": "asc"
}
}
]
}返回结果
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : null,
"hits" : [
{
"_index" : "book",
"_type" : "_doc",
"_id" : "2",
"_score" : null,
"_source" : {
"name" : "java编程思想",
"description" : "java语言是世界第一编程语言，在软件开发领域使用人数最多。",
"studymodel" : "201001",
"price" : 68.6,
"timestamp" : "2019-08-25 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"java",
"dev"
]
},
"sort" : [
68.6
]
},
{
"_index" : "book",
"_type" : "_doc",
"_id" : "3",
"_score" : null,
"_source" : {
"name" : "spring开发基础",
"description" : "spring 在java领域非常流行，java程序员都在用。",
"studymodel" : "201001",
"price" : 88.6,
"timestamp" : "2019-08-24 19:11:35",
"pic" : "group1/M00/00/00/wKhlQFs6RCeAY0pHAAJx5ZjNDEM428.jpg",
"tags" : [
"spring",
"java"
]
},
"sort" : [
88.6
]
}
]
}
}Java代码
//sort搜索
@Test
public void testSearchSort() throws IOException {
//1构建搜索请求
SearchRequest searchRequest = new SearchRequest("book");
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//构建multiMatch请求
MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery("java程序员", "name", "description");
//构建match请求
MatchQueryBuilder matchQueryBuilder = QueryBuilders.matchQuery("studymodel", "201001");
BoolQueryBuilder boolQueryBuilder=QueryBuilders.boolQuery();
boolQueryBuilder.must(multiMatchQueryBuilder);
boolQueryBuilder.should(matchQueryBuilder);
boolQueryBuilder.filter(QueryBuilders.rangeQuery("price").gte(50).lte(90));
searchSourceBuilder.query(boolQueryBuilder);
//按照价格升序
searchSourceBuilder.sort("price", SortOrder.ASC);
searchRequest.source(searchSourceBuilder);
//2执行搜索
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
//3获取结果
SearchHits hits = searchResponse.getHits();
//数据数据
SearchHit[] searchHits = hits.getHits();
System.out.println("--------------------------");
for (SearchHit hit : searchHits) {
String id = hit.getId();
float score = hit.getScore();
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
String name = (String) sourceAsMap.get("name");
String description = (String) sourceAsMap.get("description");
Double price = (Double) sourceAsMap.get("price");
System.out.println("id:" + id);
System.out.println("name:" + name);
System.out.println("description:" + description);
System.out.println("price:" + price);
System.out.println("==========================");
}
}返回结果
10、总结
- 在实际的应用过程要注意灵活变通，搜索方式方法不要一成不变，要思考为什么这种方式能够搜索出来结果，还要思考搜索结果的正确与否
- 在上面的学习过程中，应该也能发现规律，Java代码中构建搜索请求与rest 风格的语法及其类似，包括其搜索方式、代码层级。所以在实际应用中，要先在kibana中完善搜索代码，只要kibana中能够搜索出来，Java代码一般来说也能行，这样能够缩短代码调试的时间。
ElasticSearch7.3学习(二十三)----RestHighLevelClient Java api实现match_all、ids、match、term、multi_match、bool、filter、sort等不同的搜索方式的更多相关文章
- HBase学习（二） 基本命令 Java api
一.Hbase shell 1.Region信息观察 创建表指定命名空间 在创建表的时候可以选择创建到bigdata17这个namespace中,如何实现呢? 使用这种格式即可:'命名空间名称:表名' ...
- Java开发学习(二十三)----SpringMVC入门案例、工作流程解析及设置bean加载控制
一.SpringMVC概述 SpringMVC是隶属于Spring框架的一部分,主要是用来进行Web开发,是对Servlet进行了封装.SpringMVC是处于Web层的框架,所以其主要的作用就是用来 ...
- 【Hbase学习之三】Hbase Java API
环境 虚拟机:VMware 10 Linux版本:CentOS-6.5-x86_64 客户端:Xshell4 FTP:Xftp4 jdk8 hadoop-2.6.5 hbase-0.98.12.1-h ...
- Hadoop学习笔记1 - 使用Java API访问远程hdfs集群
转载请标注原链接 http://www.cnblogs.com/xczyd/p/8570437.html 2018年3月从新司重新起航了.之前在某司过了的蛋疼三个月,也算给自己放了个小假了. 第一个小 ...
- ElasticSearch7.3学习(二十一)----Filter与Query对比、使用explain关键字分析语法
1.数据准备 首先创建book索引 PUT /book/ { "settings": { "number_of_shards": 1, "number ...
- ElasticSearch7.3学习(二十五)----Doc value、query phase、fetch phase解析
1.Doc value 搜索的时候,要依靠倒排索引: 排序的时候,需要依靠正排索引,看到每个document的每个field,然后进行排序. 所谓的正排索引,其实就是doc values. 在建立索引 ...
- ElasticSearch7.3学习(二十六)----搜索（Search）参数总结、结果跳跃（bouncing results）问题解析
1.preference 首先引入一个bouncing results问题,两个document排序,field值相同:不同的shard上,可能排序不同:每次请求轮询打到不同的replica shar ...
- ElasticSearch7.3学习(二十七)----聚合概念（bucket和metric）及其示例
一.两个核心概念:bucket和metric 1.1 bucket 有如下数据 city name 北京 张三 北京 李四 天津 王五 天津 赵六 天津 王麻子 划分出来两个bucket,一个是北 ...
- ElasticSearch7.3学习(二十)----采用restful风格查询详解
1.Query DSL入门 1.1 DSL DSL:Domain Specified Language,特定领域的语言.es特有的搜索语言,可在请求体中携带搜索条件,功能强大. 查询全部 GET /b ...
随机推荐
- 【Visual Studio】VS 提示图标的含义
一.前言 vs 中提示图标是什么意思 二.正文 信号图标 以下信号图标应用于所有原有的图标并指示它们的辅助功能. 图标 描述 <No Signal Icon> Public. 可从此组件中 ...
- Asp.Net Core之Identity应用(下篇)
一.前言 在上篇中简单介绍了 Asp.Net Core 自带的 Identity,一个负责对用户的身份进行认证的框架,当我们按需选择这个框架作为管理和存储我们应用中的用户账号数据的时候,就会添加到自己 ...
- 前端每日实战：89# 视频演示如何用 CSS 和 D3 创作旋臂粒子动画
效果预览 按下右侧的"点击预览"按钮可以在当前页面预览,点击链接可以全屏预览. https://codepen.io/comehope/pen/xJrOqd 可交互视频 此视频是可 ...
- 洛谷 P5706 【深基2.例8】再分肥宅水
题目连接: P5706 [深基2.例8]再分肥宅水 - 洛谷 | 计算机科学教育新生态 (luogu.com.cn) 我提交的: 1 #include<iostream> 2 #inclu ...
- throws子句在继承当中overrride时有什么规则
8.throws子句在继承当中overrride时的规则 马克-to-win:当子类方法override父类方法时,throws子句不能引进新的checked异常.换句话说:子类override方法的 ...
- 论文阅读-Clustering temporal disease networks to assist clinical decision support systems in visual analytics of comorbidity progression
一.问题描述: 二.相关工作: 三.方法描述: 四.实验及结果
- 世界各国 MCC 和 MNC 列表
http://www.cnblogs.com/inteliot/archive/2012/08/22/2651666.html常见MCC:代码(MCC) ISO 3166-1 国家202 ...
- 访问控制protected是不同包中对子类可见，什么意思？
2.2 以下例子说明:protected是不同包中对子类可见,对非子类不可见. 例1.2.2.a:---本例为正常用法. package p1;public class A { protecte ...
- Java中JSONArray转换成int[]的办法
今天写项目的时候要做一个MyBatis的带IN子句的删除,于是用一个整型数组来保存待删除数据的ID 从前端将JSON字符串搞过来之后如何将JSONArray转换成int类型数组就成了个问题 下面是我的 ...
- JavaScript实现有农历和节气节假日的日历
运行效果: 源代码: 1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta http-equiv="Content ...