这是我参与8月更文挑战的第16天，活动详情查看：8月更文挑战；
备注：继Elasticsearch笔记(5)
DSL搜索详解
- 预先创建index以及properties
#PUT http://192.168.123.64:9200/jacquesh
{
"settings": {
"index": {
"number_of_shards": "5", #主分片数量
"number_of_replicas": "0" #备份分片数量
}
}
}
#POST http://192.168.123.64:9200/jacquesh
{
"properties": {
"id": {
"type": "long"
},
"age": {
"type": "integer"
},
"username": {
"type": "keyword"
},
"nickname": {
"type": "text",
"analyzer": "ik_max_word"
},
"comefrom": {
"type": "text",
"analyzer": "ik_max_word"
},
"sex": {
"type": "byte"
},
"birthday": {
"type": "date"
},
"class": {
"type": "text"
}
}
}
- 填充测试数据
#POST http://192.168.123.64:9200/jacuesh/_doc/1001
{
"id": 1001,
"age": 31,
"username": "黄某人",
"nickname": "老黄",
"comefrom": "广东省深圳市",
"sex": 1,
"birthday": "1995-10-29",
"class": "计算机科学与技术1班"
}
#POST http://192.168.123.64:9200/jacuesh/_doc/1002
{
"id": 1002,
"age": 21,
"username": "刘某鹏",
"nickname": "鹏鹏",
"comefrom": "河北省邯郸市",
"sex": 1,
"birthday": "1998-10-21",
"class": "计算机科学以技术1班"
}
#POST http://192.168.123.64:9200/jacuesh/_doc/1003
{
"id": 1003,
"age": 20,
"username": "刘某东",
"nickname": "狗东",
"comefrom": "河北省邢台市",
"sex": 1,
"birthday": "1993-10-21",
"class": "计算机科学以技术1班"
}
DSL搜索 - 入门语法
请求参数的查询(QueryString)
查询[字段]包含[内容]的文档
# GET /{索引}/_doc/_search?q={filds}:{value}
# GET http://192.168.123.64:9200/jacuesh/_doc/_search?q=comefrom:河北
查询结果
{
"took": 93,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 0.2876821,
"hits": [
{
"_index": "jacuesh",
"_type": "_doc",
"_id": "1002\n",
"_score": 0.2876821,
"_source": {
"id": 1002,
"age": 21,
"username": "刘某鹏",
"nickname": "鹏鹏",
"comefrom": "河北省邯郸市",
"sex": 1,
"birthday": "1998-10-21",
"class": "计算机科学以技术1班"
}
},
{
"_index": "jacuesh",
"_type": "_doc",
"_id": "1003\n",
"_score": 0.2876821,
"_source": {
"id": 1003,
"age": 20,
"username": "刘某东",
"nickname": "狗东",
"comefrom": "河北省邢台市",
"sex": 1,
"birthday": "1993-10-21",
"class": "计算机科学以技术1班"
}
}
]
}
}
多个参数
#GET /{索引}/_doc/_search?q={filds}:{value}&q={filds}:{value}
# GET http://192.168.123.64:9200/jacuesh/_doc/_search?q=comefrom:河北&q=age:20
查询结果
{
"took": 17,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 1,
"relation": "eq"
},
"max_score": 1.0,
"hits": [
{
"_index": "jacuesh",
"_type": "_doc",
"_id": "1003\n",
"_score": 1.0,
"_source": {
"id": 1003,
"age": 20,
"username": "刘某东",
"nickname": "狗东",
"comefrom": "河北省邢台市",
"sex": 1,
"birthday": "1993-10-21",
"class": "计算机科学以技术1班"
}
}
]
}
}
text与keyword搜索对比测试(keyword不会被倒排索引，不会被分词)
#GET http://192.168.123.64:9200/jacuesh/_doc/_search?q=username:黄
#由于username的type为keyword所以不会被分词
{
"took": 28,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 0,
"relation": "eq"
},
"max_score": null,
"hits": []
}
}
#GET http://192.168.123.64:9200/jacuesh/_doc/_search?q=username:黄某人
##使用了全量匹配就能被匹配出来
{
"took": 12,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 1,
"relation": "eq"
},
"max_score": 0.2876821,
"hits": [
{
"_index": "jacuesh",
"_type": "_doc",
"_id": "1001\n",
"_score": 0.2876821,
"_source": {
"id": 1001,
"age": 31,
"username": "黄某人",
"nickname": "老黄",
"comefrom": "广东省汕头市",
"sex": 1,
"birthday": "1995-10-29",
"class": "计算机科学以技术1班"
}
}
]
}
}
这种方式称之为QueryString查询方式，参数都是放在url中作为请求参数的。
