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

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
            }
        } 
    }
  
}

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"
                }
            }
        ]
    }
}

3 相关信息

• 博文不易，辛苦各位猿友点个关注和赞，感谢