ElasticSearch 实现分词全文检索 - 概述
ElasticSearch 实现分词全文检索 - ES、Kibana、IK安装
ElasticSearch 实现分词全文检索 - Restful基本操作
ElasticSearch 实现分词全文检索 - Java SpringBoot ES 索引操作
ElasticSearch 实现分词全文检索 - Java SpringBoot ES 文档操作
ElasticSearch 实现分词全文检索 - 测试数据准备
ElasticSearch 实现分词全文检索 - term、terms查询
ElasticSearch 实现分词全文检索 - match、match_all、multimatch查询
ElasticSearch 实现分词全文检索 - id、ids、prefix、fuzzy、wildcard、range、regexp 查询
ElasticSearch 实现分词全文检索 - Scroll 深分页
ElasticSearch 实现分词全文检索 - delete-by-query
ElasticSearch 实现分词全文检索 - 复合查询
ElasticSearch 实现分词全文检索 - filter查询
ElasticSearch 实现分词全文检索 - 高亮查询
ElasticSearch 实现分词全文检索 - 聚合查询 cardinality
ElasticSearch 实现分词全文检索 - 经纬度查询
ElasticSearch 实现分词全文检索 - 搜素关键字自动补全(suggest)
ElasticSearch 实现分词全文检索 - SpringBoot 完整实现 Demo 附源码
ES 中提供了一个数据类型 geo_point, 用来存储经纬度
# 创建一个索引,指定 name,location
PUT /map
{
"settings": {
"number_of_shards": 2,
"number_of_replicas": 1
},
"mappings": {
"properties":{
"name":{
"type":"text"
},
"location":{
"type":"geo_point"
}
}
}
}
百度地图经纬度:http://api.map.baidu.com/lbsapi/getpoint/index.html
# 添加数据
PUT /map/_doc/1
{
"name":"天安门",
"location":{
"lon":116.403119,
"lat":39.915599
}
}
PUT /map/_doc/2
{
"name":"北京大学",
"location":{
"lon":116.316486,
"lat":39.999416
}
}
PUT /map/_doc/3
{
"name":"清华大学",
"location":{
"lon":116.333267,
"lat":40.010276
}
}
# 直接距离
POST /map/_search
{
"query":{
"geo_distance":{
"location":{ #确定一个点
"lon":116.433589,
"lat":39.909235
},
"distance":3000, # 2000 查不到,当前定位中,3公里内维护的数据(类似外卖)
"distance_type":"arc" # 指定形状为圆形,直接距离
}
}
}
# 左上、右下,确定巨型范围
POST /map/_search
{
"query":{
"geo_bounding_box":{
"location":{
"top_left":{ # 圆明园
"lon":116.309695,
"lat":40.013094
},
"bottom_right":{ # 天安门
"lon":116.403119,
"lat":39.915599
}
}
}
}
}
# 多点确定范围
POST /map/_search
{
"query":{
"geo_polygon":{
"location":{
"points":[
{
"lon":116.31027,
"lat":40.013315
},
{
"lon":116.335854,
"lat":39.998282
},{
"lon":116.301359,
"lat":39.992534
}
]
}
}
}
}
Java
@Test
void geoPolygon() throws Exception {
String indexName = "map";
RestHighLevelClient client = ESClient.getClient();
//1. 创建SearchRequest对象
SearchRequest request = new SearchRequest(indexName);
//2. 指定查询条件
List<GeoPoint> points = new ArrayList<>();
points.add(new GeoPoint(40.013315, 116.31027));
points.add(new GeoPoint( 39.998282,116.335854));
points.add(new GeoPoint( 39.992534,116.301359));
SearchSourceBuilder builder = new SearchSourceBuilder();
builder.query(QueryBuilders.geoPolygonQuery("location", points));
request.source(builder);
//3. 执行查询
SearchResponse resp = client.search(request, RequestOptions.DEFAULT);
//4. 输出返回值
for (SearchHit hit : resp.getHits().getHits()) {
System.out.println(hit.getSourceAsMap());
}
}
ES 是一个使用Java语言并且基于Lucene编写的搜索引擎框架,他提供了分布式的全文搜索功能,提供了一个统一的基于Restful风格的WEB接口,官方客户端也对多种语言都提供了相应的API。