Elasticsearch---DSL搜索实践
Domain Specific Language
特定领域语言，基于JSON格式的数据查询，查询更灵活，有利于复杂查询
一、普通url路径参数搜索
- 数据准备
1.建立名字为 shop 的索引
2.手动建立mappings
POST http://192.168.2.223:9200/shop/_mapping
{
"properties": {
"id": {
"type": "long"
},
"age": {
"type": "integer"
},
"username": {
"type": "keyword"
},
"nickname": {
"type": "text",
"analyzer": "ik_max_word"
},
"money": {
"type": "float"
},
"desc": {
"type": "text",
"analyzer": "ik_max_word"
},
"sex": {
"type": "byte"
},
"birthday": {
"type": "date"
},
"face": {
"type": "text",
"index": false
}
}
}
3.添加数据
POST http://192.168.2.223:9200/shop/_doc/1001
{
"id": 1011,
"age": 31,
"username": "sprder",
"nickname": "皮特帕克",
"money": 180.8,
"desc": "它是一个超级英雄",
"sex": 1,
"birthday": "1989-08-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1008,
"age": 19,
"username": "zhoujiang",
"nickname": "周江",
"money": 1056.8,
"desc": "周江大学毕业后，进了阿里",
"sex": 1,
"birthday": "1995-06-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1007,
"age": 19,
"username": "msgame",
"nickname": "gamexbox",
"money": 1056.8,
"desc": "明天去进货，最近微软处理很多游戏机，还要买xbox游戏卡带",
"sex": 1,
"birthday": "1985-05-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1003,
"age": 20,
"username": "bigFace",
"nickname": "飞翔的巨鹰",
"money": 66.8,
"desc": "周江和导游坐飞机去海外旅游，去了新马泰和欧洲",
"sex": 1,
"birthday": "1996-01-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1002,
"age": 19,
"username": "zhouhong",
"nickname": "周红",
"money": 77.8,
"desc": "今天上下班都很堵，车流量很大",
"sex": 1,
"birthday": "1993-01-24",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1012,
"age": 31,
"username": "super hero",
"nickname": "super hero",
"money": 188.8,
"desc": "BatMan, GreenArrow, SpiderMan, IronMan... are all Super Hero",
"sex": 1,
"birthday": "1980-08-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1010,
"age": 30,
"username": "tata",
"nickname": "隔壁老王",
"money": 100.8,
"desc": "隔壁老外去国外出差，带给我很多好吃的",
"sex": 1,
"birthday": "1988-07-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1009,
"age": 22,
"username": "shaonian",
"nickname": "骚年轮",
"money": 96.8,
"desc": "骚年在大学毕业后，考研究生去了",
"sex": 1,
"birthday": "1998-07-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1006,
"age": 19,
"username": "zhouhong",
"nickname": "我叫周红",
"money": 156.8,
"desc": "我叫周红，今年20岁，是一名毕业生，我在琦䯲星球做演讲",
"sex": 1,
"birthday": "1993-04-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1005,
"age": 25,
"username": "gotoplay",
"nickname": "ps游戏机",
"money": 155.8,
"desc": "今年生日，女友送了我一台play station游戏机，非常好玩，非常不错",
"sex": 1,
"birthday": "1989-03-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1004,
"age": 22,
"username": "flyfish",
"nickname": "水中鱼",
"money": 55.8,
"desc": "昨天周红在学校的池塘里，看到有很多鱼在游泳",
"sex": 0,
"birthday": "1988-02-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1001,
"age": 18,
"username": "zhoujiang",
"nickname": "周江",
"money": 88.8,
"desc": "周江在大学学习java和前端",
"sex": 0,
"birthday": "1992-12-24",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
二、检索：
普通检索：
- http://192.168.2.223:9200/shop/_search?q=desc:周红&q=age:20
-
{
"took": 8,
"timed_out": false,
"_shards": {
"total": 3,
"successful": 3,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 1,
"relation": "eq"
},
"max_score": 1,
"hits": [
{
"_index": "shop",
"_type": "_doc",
"_id": "1003",
"_score": 1,
"_source": {
"id": 1003,
"age": 20,
"username": "bigFace",
"nickname": "飞翔的巨鹰",
"money": 66.8,
"desc": "周江和导游坐飞机去海外旅游，去了新马泰和欧洲",
"sex": 1,
"birthday": "1996-01-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
}
]
}
}
DSL检索：
- match_all 检索
- 查询所有：POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"match_all": {}
}
}- 查询部分字段 ： POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"match_all": {}
},
"_source": ["id","username","age"]
}- 分页查询： POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"match_all": {}
},
"_source": ["id","username","age"],
"from": 0,
"size": 5
}
- match_phrase 查询同一个字段中几个词，可以跳过其他词，slop表示可以跳过的最大词数
- POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"match_phrase": {
"desc": {
"query": "今天 车流量",
"slop": 100
}
}
}
}
- term 单个条件查询（不会进行分词、将输入字符当做关键字查找，精确匹配）
- POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"term": {
"desc": "学习"
}
}
}
- terms 对个关键字查询
- POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"terms": {
"desc": ["学习","周红","周江"]
}
}
}
- match 条件查询（会对输入的字符进行分词操作、全文检索）：
- POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"match": {
"desc": "周红"
}
},
"_source": ["id","username","age"]
}
- POST http://192.168.2.223:9200/shop/_doc/_search operator 为 “or”表示：字段只要有一个分词就可以查出来，operator 为 “and”表示：字段必须包含分词分出来的所有字段。
{
"query": {
"match": {
"desc": {
"query": "周红",
"operator": "and"
}
}
},
"_source": ["id","username","age"]
}
- POST http://192.168.2.223:9200/shop/_doc/_search
- minimum_should_match: 最低匹配精度，至少有[分词后的词语个数]x百分百，得出一个数据值取整。举个例子：当前属性设置为70，若一个用户查询检索内容分词后有10个词语，那么匹配度按照 10x70%=7，则desc中至少需要有7个词语匹配，就展示；若分词后有8个，则 8x70%=5.6，则desc中至少需要有5个词语匹配，就展示。
- minimum_should_match 也能设置具体的数字，表示拆分出来的词在一个字段中个数
{
"query": {
"match": {
"desc": {
"query": "女友生日送我好玩的xbox游戏机",
"minimum_should_match": "60%"
}
}
}
}
- POST http://192.168.2.223:9200/shop/_doc/_search 根据文档 ids 进行查找
{
"query": {
"ids": {
"type": "_doc",
"values": ["1001","1005","1006"]
}
},
"_source": ["id","username","desc"]
}
- multi_match 对多个字段进行检索
- POST http://192.168.2.223:9200/shop/_doc/_search ^10 表示权重，权重，为某个字段设置权重，权重越高，文档相关性得分就越高。通畅来说搜索商品名称要比商品简介的权重更高。
{
"query": {
"multi_match": {
"query": "游戏",
"fields": [
"desc^10","nickname"
]
}
}
}
- bool 查询
- POST http://192.168.2.223:9200/shop/_doc/_search
- must ：多个条件全部要满足， should：或者的意思，满足一个条件即可，must_not ：除了满足所有条件剩下的数据。
{
"query": {
"bool": {
"must": [
{
"multi_match": {
"query": "游戏",
"fields": ["desc","nickname"]
}
},
{
"term": {
"age": "19"
}
}
]
}
}
}
- post_filter 过滤器
- POST http://192.168.2.223:9200/shop/_doc/_search
- 对搜索出来的结果进行数据过滤。不会到es库里去搜，不会去计算文档的相关度分数，所以过滤的性能会比较高，过滤器可以和全文搜索结合在一起使用。
post_filter元素是一个顶层元素，只会对搜索结果进行过滤。不会计算数据的匹配度相关性分数，不会根据分数去排序，query则相反，会计算分数，也会按照分数去排序。
使用场景：
- query：根据用户搜索条件检索匹配记录
- post_filter：用于查询后，对结果数据的筛选
实操：查询账户金额大于80元，小于等于155.8元的用户
gte：大于等于
lte：小于等于
gt：大于
lt：小于
{
"query": {
"match": {
"sex": "1"
}
},
"post_filter": {
"range": {
"money": {
"gte": 60,
"lte": 155.8
}
}
}
}
- sort 排序功能
- POST http://192.168.2.223:9200/shop/_doc/_search 先以money排序再以age排序，注意：只能对整形排序，不能对文本类型排序。
{
"query": {
"match": {
"sex": "1"
}
},
"sort": [
{
"money": "asc"
},
{
"age": "asc"
}
]
}
- 对文本排序
- 需要对排序字段加一个附加属性，类型选择为keyword
-
1.创建索引
POST /shop2/_mapping
{
"properties": {
"id": {
"type": "long"
},
"nickname": {
"type": "text",
"analyzer": "ik_max_word",
"fields": {
"keyword": {
"type": "keyword"
}
}
}
}
}
2.插入数据
POST /shop2/_doc
{
"id": 1001,
"nickname": "美丽的风景"
}
{
"id": 1002,
"nickname": "漂亮的小哥哥"
}
{
"id": 1003,
"nickname": "飞翔的巨鹰"
}
{
"id": 1004,
"nickname": "完美的天空"
}
{
"id": 1005,
"nickname": "广阔的海域"
}3.排序 POST http://192.168.2.223:9200/shop2/_doc/_search
{
"sort": [
{
"nickname.keyword": "desc"
}
]
}
- exists 判断字段是否存在
- POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"exists": {
"field": "desc"
}
}
}
- highlight 关键字高亮显示
- POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"match": {
"desc": "周红"
}
},
"highlight": {
"pre_tags": ["<span>"],
"post_tags": ["</span>"],
"fields": {
"desc": {}
}
}
}结果：默认为em标签，上面设置为自定义的<span>标签，对页面 em/span 标签做一个颜色设置就可以实现高亮显示了。-
{
"took": 110,
"timed_out": false,
"_shards": {
"total": 3,
"successful": 3,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 1.1329247,
"hits": [
{
"_index": "shop",
"_type": "_doc",
"_id": "1004",
"_score": 1.1329247,
"_source": {
"id": 1004,
"age": 22,
"username": "flyfish",
"nickname": "水中鱼",
"money": 55.8,
"desc": "昨天周红在学校的池塘里，看到有很多鱼在游泳",
"sex": 0,
"birthday": "1988-02-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
},
"highlight": {
"desc": [
"昨天<em>周红</em>在学校的池塘里，看到有很多鱼在游泳"
]
}
},
{
"_index": "shop",
"_type": "_doc",
"_id": "1006",
"_score": 0.9585575,
"_source": {
"id": 1006,
"age": 19,
"username": "zhouhong",
"nickname": "我叫周红",
"money": 156.8,
"desc": "我叫周红，今年20岁，是一名毕业生，我在琦䯲星球做演讲",
"sex": 1,
"birthday": "1993-04-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
},
"highlight": {
"desc": [
"我叫<em>周红</em>，今年20岁，是一名毕业生，我在琦䯲星球做演讲"
]
}
}
]
}
Domain Specific Language
特定领域语言，基于JSON格式的数据查询，查询更灵活，有利于复杂查询
一、普通url路径参数搜索
- 数据准备
1.建立名字为 shop 的索引
2.手动建立mappings
POST http://192.168.2.223:9200/shop/_mapping
{
"properties": {
"id": {
"type": "long"
},
"age": {
"type": "integer"
},
"username": {
"type": "keyword"
},
"nickname": {
"type": "text",
"analyzer": "ik_max_word"
},
"money": {
"type": "float"
},
"desc": {
"type": "text",
"analyzer": "ik_max_word"
},
"sex": {
"type": "byte"
},
"birthday": {
"type": "date"
},
"face": {
"type": "text",
"index": false
}
}
}
{
"properties": {
"id": {
"type": "long"
},
"age": {
"type": "integer"
},
"username": {
"type": "keyword"
},
"nickname": {
"type": "text",
"analyzer": "ik_max_word"
},
"money": {
"type": "float"
},
"desc": {
"type": "text",
"analyzer": "ik_max_word"
},
"sex": {
"type": "byte"
},
"birthday": {
"type": "date"
},
"face": {
"type": "text",
"index": false
}
}
}
3.添加数据
POST http://192.168.2.223:9200/shop/_doc/1001
{
"id": 1011,
"age": 31,
"username": "sprder",
"nickname": "皮特帕克",
"money": 180.8,
"desc": "它是一个超级英雄",
"sex": 1,
"birthday": "1989-08-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1008,
"age": 19,
"username": "zhoujiang",
"nickname": "周江",
"money": 1056.8,
"desc": "周江大学毕业后，进了阿里",
"sex": 1,
"birthday": "1995-06-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1007,
"age": 19,
"username": "msgame",
"nickname": "gamexbox",
"money": 1056.8,
"desc": "明天去进货，最近微软处理很多游戏机，还要买xbox游戏卡带",
"sex": 1,
"birthday": "1985-05-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1003,
"age": 20,
"username": "bigFace",
"nickname": "飞翔的巨鹰",
"money": 66.8,
"desc": "周江和导游坐飞机去海外旅游，去了新马泰和欧洲",
"sex": 1,
"birthday": "1996-01-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1002,
"age": 19,
"username": "zhouhong",
"nickname": "周红",
"money": 77.8,
"desc": "今天上下班都很堵，车流量很大",
"sex": 1,
"birthday": "1993-01-24",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1012,
"age": 31,
"username": "super hero",
"nickname": "super hero",
"money": 188.8,
"desc": "BatMan, GreenArrow, SpiderMan, IronMan... are all Super Hero",
"sex": 1,
"birthday": "1980-08-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1010,
"age": 30,
"username": "tata",
"nickname": "隔壁老王",
"money": 100.8,
"desc": "隔壁老外去国外出差，带给我很多好吃的",
"sex": 1,
"birthday": "1988-07-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1009,
"age": 22,
"username": "shaonian",
"nickname": "骚年轮",
"money": 96.8,
"desc": "骚年在大学毕业后，考研究生去了",
"sex": 1,
"birthday": "1998-07-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1006,
"age": 19,
"username": "zhouhong",
"nickname": "我叫周红",
"money": 156.8,
"desc": "我叫周红，今年20岁，是一名毕业生，我在琦䯲星球做演讲",
"sex": 1,
"birthday": "1993-04-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1005,
"age": 25,
"username": "gotoplay",
"nickname": "ps游戏机",
"money": 155.8,
"desc": "今年生日，女友送了我一台play station游戏机，非常好玩，非常不错",
"sex": 1,
"birthday": "1989-03-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1004,
"age": 22,
"username": "flyfish",
"nickname": "水中鱼",
"money": 55.8,
"desc": "昨天周红在学校的池塘里，看到有很多鱼在游泳",
"sex": 0,
"birthday": "1988-02-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1001,
"age": 18,
"username": "zhoujiang",
"nickname": "周江",
"money": 88.8,
"desc": "周江在大学学习java和前端",
"sex": 0,
"birthday": "1992-12-24",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1011,
"age": 31,
"username": "sprder",
"nickname": "皮特帕克",
"money": 180.8,
"desc": "它是一个超级英雄",
"sex": 1,
"birthday": "1989-08-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1008,
"age": 19,
"username": "zhoujiang",
"nickname": "周江",
"money": 1056.8,
"desc": "周江大学毕业后，进了阿里",
"sex": 1,
"birthday": "1995-06-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1007,
"age": 19,
"username": "msgame",
"nickname": "gamexbox",
"money": 1056.8,
"desc": "明天去进货，最近微软处理很多游戏机，还要买xbox游戏卡带",
"sex": 1,
"birthday": "1985-05-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1003,
"age": 20,
"username": "bigFace",
"nickname": "飞翔的巨鹰",
"money": 66.8,
"desc": "周江和导游坐飞机去海外旅游，去了新马泰和欧洲",
"sex": 1,
"birthday": "1996-01-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1002,
"age": 19,
"username": "zhouhong",
"nickname": "周红",
"money": 77.8,
"desc": "今天上下班都很堵，车流量很大",
"sex": 1,
"birthday": "1993-01-24",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1012,
"age": 31,
"username": "super hero",
"nickname": "super hero",
"money": 188.8,
"desc": "BatMan, GreenArrow, SpiderMan, IronMan... are all Super Hero",
"sex": 1,
"birthday": "1980-08-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1010,
"age": 30,
"username": "tata",
"nickname": "隔壁老王",
"money": 100.8,
"desc": "隔壁老外去国外出差，带给我很多好吃的",
"sex": 1,
"birthday": "1988-07-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1009,
"age": 22,
"username": "shaonian",
"nickname": "骚年轮",
"money": 96.8,
"desc": "骚年在大学毕业后，考研究生去了",
"sex": 1,
"birthday": "1998-07-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1006,
"age": 19,
"username": "zhouhong",
"nickname": "我叫周红",
"money": 156.8,
"desc": "我叫周红，今年20岁，是一名毕业生，我在琦䯲星球做演讲",
"sex": 1,
"birthday": "1993-04-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1005,
"age": 25,
"username": "gotoplay",
"nickname": "ps游戏机",
"money": 155.8,
"desc": "今年生日，女友送了我一台play station游戏机，非常好玩，非常不错",
"sex": 1,
"birthday": "1989-03-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1004,
"age": 22,
"username": "flyfish",
"nickname": "水中鱼",
"money": 55.8,
"desc": "昨天周红在学校的池塘里，看到有很多鱼在游泳",
"sex": 0,
"birthday": "1988-02-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
{
"id": 1001,
"age": 18,
"username": "zhoujiang",
"nickname": "周江",
"money": 88.8,
"desc": "周江在大学学习java和前端",
"sex": 0,
"birthday": "1992-12-24",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
二、检索：
- http://192.168.2.223:9200/shop/_search?q=desc:周红&q=age:20
{
"took": 8,
"timed_out": false,
"_shards": {
"total": 3,
"successful": 3,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 1,
"relation": "eq"
},
"max_score": 1,
"hits": [
{
"_index": "shop",
"_type": "_doc",
"_id": "1003",
"_score": 1,
"_source": {
"id": 1003,
"age": 20,
"username": "bigFace",
"nickname": "飞翔的巨鹰",
"money": 66.8,
"desc": "周江和导游坐飞机去海外旅游，去了新马泰和欧洲",
"sex": 1,
"birthday": "1996-01-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
}
]
}
}
"took": 8,
"timed_out": false,
"_shards": {
"total": 3,
"successful": 3,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 1,
"relation": "eq"
},
"max_score": 1,
"hits": [
{
"_index": "shop",
"_type": "_doc",
"_id": "1003",
"_score": 1,
"_source": {
"id": 1003,
"age": 20,
"username": "bigFace",
"nickname": "飞翔的巨鹰",
"money": 66.8,
"desc": "周江和导游坐飞机去海外旅游，去了新马泰和欧洲",
"sex": 1,
"birthday": "1996-01-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
}
}
]
}
}
二、DSL搜索
- match_all 检索
{
"query": {
"match_all": {}
}
}
"query": {
"match_all": {}
}
}
- 查询部分字段 ： POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"match_all": {}
},
"_source": ["id","username","age"]
}
"query": {
"match_all": {}
},
"_source": ["id","username","age"]
}
- 分页查询： POST http://192.168.2.223:9200/shop/_doc/_search
{
"query": {
"match_all": {}
},
"_source": ["id","username","age"],
"from": 0,
"size": 5
}
"query": {
"match_all": {}
},
"_source": ["id","username","age"],
"from": 0,
"size": 5
}
- match_phrase 查询同一个字段中几个词，可以跳过其他词，slop表示可以跳过的最大词数
{
"query": {
"match_phrase": {
"desc": {
"query": "今天 车流量",
"slop": 100
}
}
}
}
"query": {
"match_phrase": {
"desc": {
"query": "今天 车流量",
"slop": 100
}
}
}
}
- term 单个条件查询（不会进行分词、将输入字符当做关键字查找，精确匹配）
{
"query": {
"term": {
"desc": "学习"
}
}
}
"query": {
"term": {
"desc": "学习"
}
}
}
- terms 对个关键字查询
{
"query": {
"terms": {
"desc": ["学习","周红","周江"]
}
}
}
"query": {
"terms": {
"desc": ["学习","周红","周江"]
}
}
}
- match 条件查询（会对输入的字符进行分词操作、全文检索）：
{
"query": {
"match": {
"desc": "周红"
}
},
"_source": ["id","username","age"]
}
"query": {
"match": {
"desc": "周红"
}
},
"_source": ["id","username","age"]
}
- POST http://192.168.2.223:9200/shop/_doc/_search operator 为 “or”表示：字段只要有一个分词就可以查出来，operator 为 “and”表示：字段必须包含分词分出来的所有字段。
{
"query": {
"match": {
"desc": {
"query": "周红",
"operator": "and"
}
}
},
"_source": ["id","username","age"]
}
"query": {
"match": {
"desc": {
"query": "周红",
"operator": "and"
}
}
},
"_source": ["id","username","age"]
}
- POST http://192.168.2.223:9200/shop/_doc/_search
- minimum_should_match: 最低匹配精度，至少有[分词后的词语个数]x百分百，得出一个数据值取整。举个例子：当前属性设置为70，若一个用户查询检索内容分词后有10个词语，那么匹配度按照 10x70%=7，则desc中至少需要有7个词语匹配，就展示；若分词后有8个，则 8x70%=5.6，则desc中至少需要有5个词语匹配，就展示。
- minimum_should_match 也能设置具体的数字，表示拆分出来的词在一个字段中个数
{
"query": {
"match": {
"desc": {
"query": "女友生日送我好玩的xbox游戏机",
"minimum_should_match": "60%"
}
}
}
}
"query": {
"match": {
"desc": {
"query": "女友生日送我好玩的xbox游戏机",
"minimum_should_match": "60%"
}
}
}
}
- POST http://192.168.2.223:9200/shop/_doc/_search 根据文档 ids 进行查找
{
"query": {
"ids": {
"type": "_doc",
"values": ["1001","1005","1006"]
}
},
"_source": ["id","username","desc"]
}
"query": {
"ids": {
"type": "_doc",
"values": ["1001","1005","1006"]
}
},
"_source": ["id","username","desc"]
}
- multi_match 对多个字段进行检索
- POST http://192.168.2.223:9200/shop/_doc/_search ^10 表示权重，权重，为某个字段设置权重，权重越高，文档相关性得分就越高。通畅来说搜索商品名称要比商品简介的权重更高。
{
"query": {
"multi_match": {
"query": "游戏",
"fields": [
"desc^10","nickname"
]
}
}
}
"query": {
"multi_match": {
"query": "游戏",
"fields": [
"desc^10","nickname"
]
}
}
}
- bool 查询
- POST http://192.168.2.223:9200/shop/_doc/_search
- must ：多个条件全部要满足， should：或者的意思，满足一个条件即可，must_not ：除了满足所有条件剩下的数据。
{
"query": {
"bool": {
"must": [
{
"multi_match": {
"query": "游戏",
"fields": ["desc","nickname"]
}
},
{
"term": {
"age": "19"
}
}
]
}
}
}
"query": {
"bool": {
"must": [
{
"multi_match": {
"query": "游戏",
"fields": ["desc","nickname"]
}
},
{
"term": {
"age": "19"
}
}
]
}
}
}
- post_filter 过滤器
- POST http://192.168.2.223:9200/shop/_doc/_search
- 对搜索出来的结果进行数据过滤。不会到es库里去搜，不会去计算文档的相关度分数，所以过滤的性能会比较高，过滤器可以和全文搜索结合在一起使用。
post_filter元素是一个顶层元素，只会对搜索结果进行过滤。不会计算数据的匹配度相关性分数，不会根据分数去排序，query则相反，会计算分数，也会按照分数去排序。
使用场景：
- query：根据用户搜索条件检索匹配记录
- post_filter：用于查询后，对结果数据的筛选
实操：查询账户金额大于80元，小于等于155.8元的用户
gte：大于等于
lte：小于等于
gt：大于
lt：小于
{
"query": {
"match": {
"sex": "1"
}
},
"post_filter": {
"range": {
"money": {
"gte": 60,
"lte": 155.8
}
}
}
}
"query": {
"match": {
"sex": "1"
}
},
"post_filter": {
"range": {
"money": {
"gte": 60,
"lte": 155.8
}
}
}
}
- sort 排序功能
- POST http://192.168.2.223:9200/shop/_doc/_search 先以money排序再以age排序，注意：只能对整形排序，不能对文本类型排序。
{
"query": {
"match": {
"sex": "1"
}
},
"sort": [
{
"money": "asc"
},
{
"age": "asc"
}
]
}
"query": {
"match": {
"sex": "1"
}
},
"sort": [
{
"money": "asc"
},
{
"age": "asc"
}
]
}
- 对文本排序
- 需要对排序字段加一个附加属性，类型选择为keyword
1.创建索引
POST /shop2/_mapping
{
"properties": {
"id": {
"type": "long"
},
"nickname": {
"type": "text",
"analyzer": "ik_max_word",
"fields": {
"keyword": {
"type": "keyword"
}
}
}
}
}
POST /shop2/_mapping
{
"properties": {
"id": {
"type": "long"
},
"nickname": {
"type": "text",
"analyzer": "ik_max_word",
"fields": {
"keyword": {
"type": "keyword"
}
}
}
}
}
2.插入数据
POST /shop2/_doc
{
"id": 1001,
"nickname": "美丽的风景"
}
{
"id": 1002,
"nickname": "漂亮的小哥哥"
}
{
"id": 1003,
"nickname": "飞翔的巨鹰"
}
{
"id": 1004,
"nickname": "完美的天空"
}
{
"id": 1005,
"nickname": "广阔的海域"
}
POST /shop2/_doc
{
"id": 1001,
"nickname": "美丽的风景"
}
{
"id": 1002,
"nickname": "漂亮的小哥哥"
}
{
"id": 1003,
"nickname": "飞翔的巨鹰"
}
{
"id": 1004,
"nickname": "完美的天空"
}
{
"id": 1005,
"nickname": "广阔的海域"
}
3.排序 POST http://192.168.2.223:9200/shop2/_doc/_search
{
"sort": [
{
"nickname.keyword": "desc"
}
]
}
{
"sort": [
{
"nickname.keyword": "desc"
}
]
}
- exists 判断字段是否存在
{
"query": {
"exists": {
"field": "desc"
}
}
}
"query": {
"exists": {
"field": "desc"
}
}
}
- highlight 关键字高亮显示
{
"query": {
"match": {
"desc": "周红"
}
},
"highlight": {
"pre_tags": ["<span>"],
"post_tags": ["</span>"],
"fields": {
"desc": {}
}
}
}
"query": {
"match": {
"desc": "周红"
}
},
"highlight": {
"pre_tags": ["<span>"],
"post_tags": ["</span>"],
"fields": {
"desc": {}
}
}
}
结果：默认为em标签，上面设置为自定义的<span>标签，对页面 em/span 标签做一个颜色设置就可以实现高亮显示了。
{
"took": 110,
"timed_out": false,
"_shards": {
"total": 3,
"successful": 3,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 1.1329247,
"hits": [
{
"_index": "shop",
"_type": "_doc",
"_id": "1004",
"_score": 1.1329247,
"_source": {
"id": 1004,
"age": 22,
"username": "flyfish",
"nickname": "水中鱼",
"money": 55.8,
"desc": "昨天周红在学校的池塘里，看到有很多鱼在游泳",
"sex": 0,
"birthday": "1988-02-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
},
"highlight": {
"desc": [
"昨天<em>周红</em>在学校的池塘里，看到有很多鱼在游泳"
]
}
},
{
"_index": "shop",
"_type": "_doc",
"_id": "1006",
"_score": 0.9585575,
"_source": {
"id": 1006,
"age": 19,
"username": "zhouhong",
"nickname": "我叫周红",
"money": 156.8,
"desc": "我叫周红，今年20岁，是一名毕业生，我在琦䯲星球做演讲",
"sex": 1,
"birthday": "1993-04-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
},
"highlight": {
"desc": [
"我叫<em>周红</em>，今年20岁，是一名毕业生，我在琦䯲星球做演讲"
]
}
}
]
}
}
"took": 110,
"timed_out": false,
"_shards": {
"total": 3,
"successful": 3,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 1.1329247,
"hits": [
{
"_index": "shop",
"_type": "_doc",
"_id": "1004",
"_score": 1.1329247,
"_source": {
"id": 1004,
"age": 22,
"username": "flyfish",
"nickname": "水中鱼",
"money": 55.8,
"desc": "昨天周红在学校的池塘里，看到有很多鱼在游泳",
"sex": 0,
"birthday": "1988-02-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
},
"highlight": {
"desc": [
"昨天<em>周红</em>在学校的池塘里，看到有很多鱼在游泳"
]
}
},
{
"_index": "shop",
"_type": "_doc",
"_id": "1006",
"_score": 0.9585575,
"_source": {
"id": 1006,
"age": 19,
"username": "zhouhong",
"nickname": "我叫周红",
"money": 156.8,
"desc": "我叫周红，今年20岁，是一名毕业生，我在琦䯲星球做演讲",
"sex": 1,
"birthday": "1993-04-14",
"face": "https://www.zhouhong.com/static/img/index/logo.png"
},
"highlight": {
"desc": [
"我叫<em>周红</em>，今年20岁，是一名毕业生，我在琦䯲星球做演讲"
]
}
}
]
}
}
Elasticsearch---DSL搜索实践的更多相关文章
- Elasticsearch（ES）的高级搜索（DSL搜索）（上篇）
1. 概述 之前聊了一下 Elasticsearch(ES)的基本使用,今天我们聊聊 Elasticsearch(ES)的高级搜索(DSL搜索),由于DSL搜索内容比较多,因此分为两篇文章完成. 2. ...
- Elasticsearch（ES）的高级搜索（DSL搜索）（下篇）
1. 概述 之前聊了Elasticsearch(ES)的高级搜索(DSL搜索)的一部分内容,今天把剩下的部分聊完. 2. 场景说明 2.1 创建索引同时创建映射 PUT http://192.168 ...
- ElasticSearch位置搜索
ElasticSearch位置搜索 学习了:https://blog.csdn.net/bingduanlbd/article/details/52253542 学习了:https://blog.cs ...
- ElasticSearch入门-搜索(java api)
ElasticSearch入门-搜索(java api) package com.qlyd.searchhelper; import java.util.Map; import net.sf.json ...
- PHP使用ElasticSearch做搜索
PHP 使用 ElasticSearch 做搜索 https://blog.csdn.net/zhanghao143lina/article/details/80280321 https://www. ...
- 十九种Elasticsearch字符串搜索方式终极介绍
前言 刚开始接触Elasticsearch的时候被Elasticsearch的搜索功能搞得晕头转向,每次想在Kibana里面查询某个字段的时候,查出来的结果经常不是自己想要的,然而又不知道问题出在了哪 ...
- Elasticsearch实现搜索推荐词
本篇介绍的是基于Elasticsearch实现搜索推荐词,其中需要用到Elasticsearch的pinyin插件以及ik分词插件,代码的实现这里提供了java跟C#的版本方便大家参考. 1.实现的结 ...
- Elasticsearch 为了搜索
前言 Elasticsearch 是一个开源的搜索引擎,建立在一个全文搜索引擎库 Apache Lucene 基础之上. Lucene 可以说是当下最先进.高性能.全功能的搜索引擎库--无论是开源还是 ...
- Elasticsearch分布式搜索和数据分析引擎-ElasticStack（上）v7.14.0
Elasticsearch概述 **本人博客网站 **IT小神 www.itxiaoshen.com Elasticsearch官网地址 https://www.elastic.co/cn/elast ...
随机推荐
- StreamingContext详解，输入DStream和Reveiver详解
StreamingContext详解,输入DStream和Reveiver详解 一.StreamingContext详解 1.1两种创建StreamingContext的方式 1.2SteamingC ...
- Spring Boot 两种多数据源配置：JdbcTemplate、Spring-data-jpa
多数据源配置 JdbcTemplate支持 Spring-data-jpa支持 多数据源配置 创建一个Spring配置类,定义两个DataSource用来读取application.propertie ...
- java 读取text内容
public static String readToString(String fileName) { String encoding = "UTF-8"; File file ...
- 第2层交换和生成树协议(STP)__散知识点
1.交换式服务 网桥是基于软件的,而交换机使用专用集成电路(ASIC)来创建并维护其过滤表.2层交换机和网桥转发数据的速度比路由器快一些,因为它们不查看网络层报头的信息,不对数据包做任何修改.相反,在 ...
- Python初学者随笔（一）_ 用Python写的第一个游戏“猜数字”
如标题所写,这篇随笔主要记录下学习Python过程中用Python写的第一个游戏--"猜数字"_跟着"小甲鱼"学Python,链接: https://b23.t ...
- 博弈论入门——Nim游戏引入
说实话,我真的对这个游戏看得是一脸懵逼,因为(我太弱了)我没有明白一些变量的意思,所以一直很懵,现在才明白,这让我明白博弈论(还可以骗钱)博大精深; 以下是我自己思考的过程,也许不严谨,但是最终明白了 ...
- Java中赋值常量的注意事项
写在前面: 从网上学习的赋值规则 摘录自网络,标明出处 byte,short,int,long 比如 int a = 234; 此处的常量234类型默认是int,如果要将大的整数赋值给变量的话 必须 ...
- Educational Codeforces Round 89 (Rated for Div. 2) B. Shuffle (数学,区间)
题意:有长为\(n\)的排列,其中\(x\)位置上的数为\(1\),其余位置全为\(0\),询问\(m\)次,每次询问一个区间,在这个区间内可以交换任意两个位置上的数,问\(1\)最后出现在不同位置的 ...
- Windows环境下Node.js环境搭建
1.Node.js下载与安装 https://nodejs.org/zh-cn/download/ Windows现在windows安装包(.msi),现在后手动安装,安装目录无要求,选项默认即可 2 ...
- OpenStack Train版-4.安装placement放置服务
安装placement放置服务 创建placement数据库 mysql -uroot CREATE DATABASE placement; GRANT ALL PRIVILEGES ON place ...