本文共 7131 字，大约阅读时间需要 23 分钟。
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
multi_match 满足使用 match 在多个字段中进行查询的需求
传递JSON数据
{ "query": { "multi_match": { "query": "组合", "fields": [ "desc","nickname" ] } }, "_source": [ "id", "nickname", "desc" ]} 请求结果
{ "took": 3, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 1, "relation": "eq" }, "max_score": 2.2874916, "hits": [ { "_index": "search_demo", "_type": "_doc", "_id": "1007", "_score": 2.2874916, "_source": { "nickname": "老男孩", "id": 1007, "desc": "确实是个很好的组合，筷子 筷子" } } ] }} boost 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。通常来说，搜索商品名称要比商品简介的权重要高。
传递JSON数据
{ "query": { "multi_match": { "query": "好的", "fields": [ "desc","nickname*10" ] } }, "_source": [ "id", "nickname", "desc" ]} 请求结果
{ "took": 4, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 9, "relation": "eq" }, "max_score": 3.1980762, "hits": [ { "_index": "search_demo", "_type": "_doc", "_id": "1004", "_score": 3.1980762, "_source": { "nickname": "红帽子", "id": 1004, "desc": "好的系统必须拥有稳定的系统结构" } }, { "_index": "search_demo", "_type": "_doc", "_id": "1005", "_score": 3.0979095, "_source": { "nickname": "switch游戏机", "id": 1005, "desc": "好的游戏，才会有人购买，比如塞尔达" } }, { "_index": "search_demo", "_type": "_doc", "_id": "1003", "_score": 0.37556386, "_source": { "nickname": "涡轮增压", "id": 1003, "desc": "极限的速度是需要涡轮增压的" } }, { "_index": "search_demo", "_type": "_doc", "_id": "1012", "_score": 0.36424035, "_source": { "nickname": "youzi", "id": 1012, "desc": "永远的神" } }, { "_index": "search_demo", "_type": "_doc", "_id": "1002", "_score": 0.35254776, "_source": { "nickname": "进击的巨人", "id": 1002, "desc": "艾伦是会变成真正的巨人的" } }, { "_index": "search_demo", "_type": "_doc", "_id": "1011", "_score": 0.27665582, "_source": { "nickname": "皮特", "id": 1011, "desc": "皮特的姓氏好像是彼得" } }, { "_index": "search_demo", "_type": "_doc", "_id": "1007", "_score": 0.2639615, "_source": { "nickname": "老男孩", "id": 1007, "desc": "确实是个很好的组合，筷子 筷子" } }, { "_index": "search_demo", "_type": "_doc", "_id": "1009", "_score": 0.252381, "_source": { "nickname": "露西", "id": 1009, "desc": "露西是一只很聪明的cat" } }, { "_index": "search_demo", "_type": "_doc", "_id": "1001", "_score": 0.18093815, "_source": { "nickname": "飞翔的荷兰号", "id": 1001, "desc": "我在p2pi网站解决项目中遇到的问题，学习到了很多知识" } } ] }} nickname^10 代表搜索提升10倍的相关性，也就是说用户搜索的时候，其实以这个nickname为主，desc为辅，nickname的匹配相关度高只要提升权重比例就可以。
可以实现多重组合查询
单个查询
{ "query": { "bool": { "must": [ { "multi_match": { "query": "好的", "fields": ["desc","nickname"] } }, { "term": { "sex": 0 } }, { "term": { "birthday": "1992-12-24" } } ] } }, "_source": [ "id", "sex", "nickname", "desc" ]} 组合查询
{ "query": { "bool": { "must": [ { "match": { "desc": "好的" } }, { "match": { "nickname": "好的" } } ], "should": [ { "match": { "sex": 1 } } ], "must_not":[ { "term": { "birthday": "1993-01-24" } } ] } }, "_source": [ "id", "sex", "nickname", "desc", "birthday" ]} 为指定词语加权
{ "query": { "bool": { "should": [ { "match": { "desc": { "query": "好的", "boost": 2 } } }, { "match": { "desc": { "query": "男孩", "boost": 20 } } } ] } }, "_source": [ "id", "sex", "nickname", "desc", "birthday" ]} 转载地址：http://sjhx.baihongyu.com/