博客转载方面自己查看
目录
1 Query String Search(查询串检索)
(1) 查询全部商品:
直接在浏览器的URL地址栏内输入搜索参数:
http://172.16.22.133:9301/book_shop/it_book/_search?q=name:Java
(2) 查询的结果:
{
"took": 8,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 3,
"max_score": 1,
"hits": [
{
"_index": "book_shop",
"_type": "it_book",
"_id": "2",
"_score": 1,
"_source": {
"name": "深入理解Java虚拟机：JVM高级特性与最佳实践",
"author": "周志明",
"category": "编程语言",
"desc": "Java图书领域公认的经典著作",
"price": 79,
"date": "2013-10-01",
"publisher": "机械工业出版社",
"tags": [
"Java",
"虚拟机",
"最佳实践"
]
}
},
// 省略另外两条记录
]
}
}
(3) 查询结果中的各个参数的含义:
2 Query DSL(ES特定语法检索)
(1)查询全部商品:
GET book_shop/it_book/_search
{
"query": { "match_all": {} }
}
(2)查询name中包含Java的商品, 并按price降序排序:
GET book_shop/it_book/_search
{
"query": {
"match": {
"name": "Java"
}
},
"sort": [
{ "price": "desc" }
]
}
(3)分页查询商品 - 每页显示1条, 显示第3页:
GET book_shop/it_book/_search
{
"query": { "match_all": {} },
"from": 2,
"size": 1
}
(4)只查询商品的名称和价格:
GET book_shop/it_book/_search
{
"query": {"match_all": {}},
"_source": ["name", "price"]
}
—— 上述各类语法可以组合使用, 具体使用方法后续会陆续介绍.
3 Query Filter(过滤检索)
GET book_shop/it_book/_search
{
"query": {
"bool": {
"must": {
"match": {"name": "Java"} // name中含有Java
},
"filter": {
"range": {
"price": {"lte": 80.0} // 价格不大于80.0
}
}
}
}
}
4 Full Text Search(全文检索)
(1) 查询描述信息desc中包含"Java图书"的文档, 只显示name和desc的值:
GET book_shop/it_book/_search
{
"query": {
"match": {"desc": "Java图书"}
},
"_source": ["name", "desc"]
}
(2) 查询结果中有2条数据符合要求:
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 2,
"max_score" : 0.8630463,
"hits" : [
{
"_index" : "book_shop",
"_type" : "it_book",
"_id" : "2",
"_score" : 0.8630463,
"_source" : {
"name" : "深入理解Java虚拟机：JVM高级特性与最佳实践",
"desc" : "Java图书领域公认的经典著作" // desc中有"Java"和"图书"
}
},
{
"_index" : "book_shop",
"_type" : "it_book",
"_id" : "1",
"_score" : 0.2876821,
"_source" : {
"name" : "Java编程思想（第4版）",
"desc" : "Java学习必读经典,殿堂级著作！" // desc中有"Java"
}
}
]
}
}
(3) 全文检索的过程 —— 对查询结果的说明:
5 Phrase Search(短语检索)
(1)精确查询desc中包含"Java图书"的文档:
GET book_shop/it_book/_search
{
"query": {
"match_phrase": {
"desc": "Java图书"
}
},
"_source": ["name", "desc"]
}
(2) 查询结果只有一条数据符合要求了:
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 1,
"max_score" : 0.8630463,
"hits" : [
{
"_index" : "book_shop",
"_type" : "it_book",
"_id" : "2",
"_score" : 0.8630463,
"_source" : {
"name" : "深入理解Java虚拟机：JVM高级特性与最佳实践",
"desc" : "Java图书领域公认的经典著作" // desc中精确含有"Java图书"
}
}
]
}
}
6 Highlight Search(高亮检索)
(1) 分页查询desc中包含"Java图书"的文档, 页大小为1, 显示第1页, 并对搜索条件高亮处理:
GET book_shop/it_book/_search
{
"query": {
"match": {"desc": "Java图书"}
},
"from": 0,
"size": 1,
"highlight": {
"fields": {"desc": {}}
},
"_source": ["name", "desc"]
}
(2) 查询结果:
{
"took" : 6,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 2,
"max_score" : 0.8630463,
"hits" : [
{
"_index" : "book_shop1",
"_type" : "it_book",
"_id" : "2",
"_score" : 0.8630463,
"_source" : {
"name" : "深入理解Java虚拟机：JVM高级特性与最佳实践",
"desc" : "Java图书领域公认的经典著作"
},
"highlight" : { // 高亮显示, 默认添加<em>标签
"desc" : [
"<em>Java</em><em>图</em><em>书</em>领域公认的经典著作"
]
}
}
]
}
}
从上述结果的"<em>Java</em><em>图</em><em>书</em>也可以看出, ES底层对desc字段的值"Java图书"进行了分词处理:
