ES DSL搜索 - 过滤器_搜索结果语言过滤器是什么意思

1 介绍

主要介绍索引请求的基础API操作，使用postman进行请求，接口请求的前缀地址统一为elasticsearch 部署IP地址+端口号（例如 http://192.168.51.4:9200 。

统一请求地址：

POST /search_demo/_doc/_search
1

过滤器，是对搜索出来的结果进行数据过滤。不会到es的库里面去搜，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。

2 post_filter

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：用户查询后，对结果数据的筛选

例子查询：查询账户金额大于80，小于160的用户

• gte：大于等于
• lte：小于等于
• gt：大于
• lt：小于

传递JSON数据

{
    "query": {
        "match": {
            "desc": "好的"
        }
    },
    "post_filter": {
        "range": {
            "money": {
                "gt": 60,
                "lt": 1000
            }
        } 
    }
  
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

请求结果

{
    "took": 2,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 7,
            "relation": "eq"
        },
        "max_score": 3.0979095,
        "hits": [
            {
                "_index": "search_demo",
                "_type": "_doc",
                "_id": "1005",
                "_score": 3.0979095,
                "_source": {
                    "id": 1005,
                    "age": 25,
                    "username": "switch",
                    "nickname": "switch游戏机",
                    "money": 155.8,
                    "desc": "好的游戏，才会有人购买，比如塞尔达",
                    "sex": 1,
                    "birthday": "1989-03-14",
                    "face": "http://www.p2pi.cn/static/img/1005_face.png"
                }
            },
            {
                "_index": "search_demo",
                "_type": "_doc",
                "_id": "1003",
                "_score": 0.37556386,
                "_source": {
                    "id": 1003,
                    "age": 20,
                    "username": "youTuTu",
                    "nickname": "涡轮增压",
                    "money": 66.8,
                    "desc": "极限的速度是需要涡轮增压的",
                    "sex": 1,
                    "birthday": "1996-01-14",
                    "face": "http://www.p2pi.cn/static/img/1003_face.png"
                }
            },
            {
                "_index": "search_demo",
                "_type": "_doc",
                "_id": "1012",
                "_score": 0.36424035,
                "_source": {
                    "id": 1012,
                    "age": 19,
                    "username": "youzi",
                    "nickname": "youzi",
                    "money": 188.8,
                    "desc": "永远的神",
                    "sex": 1,
                    "birthday": "1980-08-14",
                    "face": "http://www.p2pi.cn/static/img/1012_face.png"
                }
            },
            {
                "_index": "search_demo",
                "_type": "_doc",
                "_id": "1002",
                "_score": 0.35254776,
                "_source": {
                    "id": 1002,
                    "age": 19,
                    "username": "Ailun",
                    "nickname": "进击的巨人",
                    "money": 77.8,
                    "desc": "艾伦是会变成真正的巨人的",
                    "sex": 1,
                    "birthday": "1993-01-24",
                    "face": "http://www.p2pi.cn/static/img/1002_face.png"
                }
            },
            {
                "_index": "search_demo",
                "_type": "_doc",
                "_id": "1011",
                "_score": 0.27665582,
                "_source": {
                    "id": 1011,
                    "age": 31,
                    "username": "petter",
                    "nickname": "皮特",
                    "money": 180.8,
                    "desc": "皮特的姓氏好像是彼得",
                    "sex": 1,
                    "birthday": "1989-08-14",
                    "face": "http://www.p2pi.cn/static/img/1011_face.png"
                }
            },
            {
                "_index": "search_demo",
                "_type": "_doc",
                "_id": "1009",
                "_score": 0.252381,
                "_source": {
                    "id": 1009,
                    "age": 22,
                    "username": "lucy",
                    "nickname": "露西",
                    "money": 96.8,
                    "desc": "露西是一只很聪明的cat",
                    "sex": 1,
                    "birthday": "1998-07-14",
                    "face": "http://www.p2pi.cn/static/img/1009_face.png"
                }
            },
            {
                "_index": "search_demo",
                "_type": "_doc",
                "_id": "1001",
                "_score": 0.18093815,
                "_source": {
                    "id": 1001,
                    "age": 18,
                    "username": "Tic",
                    "nickname": "飞翔的荷兰号",
                    "money": 88.8,
                    "desc": "我在p2pi网站解决项目中遇到的问题，学习到了很多知识",
                    "sex": 0,
                    "birthday": "1992-12-24",
                    "face": "http://www.p2pi.cn/static/img/1001_face.png"
                }
            }
        ]
    }
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138

3 相关信息

• 博文不易，辛苦各位猿友点个关注和赞，感谢