文章目录
条件查询
请求url上的条件查询
get请求, 在url上进行条件查询,
例如查询category有小米的数据.
url如下 :
http://127.0.0.1:9200/shopping/_search?q=category:小米
查询结果如下:
{
"took": 3,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": 0.09037233,
"hits": [
{
"_index": "shopping",
"_type": "_doc",
"_id": "ex0KPX4BPkzBbPhZJmdM",
"_score": 0.09037233,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "fB0NPX4BPkzBbPhZNmcn",
"_score": 0.09037233,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "2",
"_score": 0.09037233,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "3",
"_score": 0.09037233,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
}
]
}
}
此种查询方式 , 由于查询条件是在url路径上, 中文容易乱码, 因此不推荐使用, 一般是把查询条件放在请求体中.
请求体查询数据
请求方式为get
请求url:
http://127.0.0.1:9200/shopping/_search
请求体:
{
"query":{
"match":{
"category": "小米"
}
}
}
查询结果如下 :
{
"took": 5,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": 0.18074466,
"hits": [
{
"_index": "shopping",
"_type": "_doc",
"_id": "ex0KPX4BPkzBbPhZJmdM",
"_score": 0.18074466,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "fB0NPX4BPkzBbPhZNmcn",
"_score": 0.18074466,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "2",
"_score": 0.18074466,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "3",
"_score": 0.18074466,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
}
]
}
}
全量查询
请求方式为get
请求url:
http://127.0.0.1:9200/shopping/_search
请求体:
{
"query":{
"match_all":{
}
}
}
查询结果如下:
{
"took": 4,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": 1.0,
"hits": [
{
"_index": "shopping",
"_type": "_doc",
"_id": "ex0KPX4BPkzBbPhZJmdM",
"_score": 1.0,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "fB0NPX4BPkzBbPhZNmcn",
"_score": 1.0,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "2",
"_score": 1.0,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "3",
"_score": 1.0,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
}
]
}
}
分页查询
请求方式为get,
请求url: http://127.0.0.1:9200/shopping/_search
请求体: 代表查询从第一页查询,每页2条数据
{
"query":{
"match_all":{
}
},
"from": 0,
"size": 2
}
查询结果 :
{
"took": 2,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": 1.0,
"hits": [
{
"_index": "shopping",
"_type": "_doc",
"_id": "ex0KPX4BPkzBbPhZJmdM",
"_score": 1.0,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "fB0NPX4BPkzBbPhZNmcn",
"_score": 1.0,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
}
]
}
}
from = (页数-1) * size 每页条数
查第二页的数据 from = (2-1) *2 = 2
查询结果如下:
{
"took": 2,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": 1.0,
"hits": [
{
"_index": "shopping",
"_type": "_doc",
"_id": "2",
"_score": 1.0,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "3",
"_score": 1.0,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
}
}
]
}
}
对查询结果指定字段
_source 对指定的字段进行过滤, 例如只想在查询结果中要title字段.
查询请求体内容如下 :
{
"query":{
"match_all":{
}
},
"from": 2,
"size": 2,
"_source": ["title"]
}
查询结果如下:
{
"took": 5,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": 1.0,
"hits": [
{
"_index": "shopping",
"_type": "_doc",
"_id": "2",
"_score": 1.0,
"_source": {
"title": "小米手机"
}
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "3",
"_score": 1.0,
"_source": {
"title": "小米手机"
}
}
]
}
}
可以看到查询的结果字段只有title了.
查询排序
先把id为3的数据, 价格改为1.
执行post请求, 进行局部更新操作.
请求url
http://127.0.0.1:9200/shopping/_update/3
请求体: 只对price价格进行更新
{
"doc": {
"price": 1
}
}
再执行对价格进行升序查询排序,
get请求,
请求url:
http://127.0.0.1:9200/shopping/_search
请求体:
{
"query":{
"match_all":{
}
},
"from": 0,
"size": 2,
"sort": {
"price":{
"order": "asc"
}
}
}
请求结果如下 :
{
"took": 211,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": null,
"hits": [
{
"_index": "shopping",
"_type": "_doc",
"_id": "3",
"_score": null,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 1
},
"sort": [
1.0
]
},
{
"_index": "shopping",
"_type": "_doc",
"_id": "ex0KPX4BPkzBbPhZJmdM",
"_score": null,
"_source": {
"title": "小米手机",
"category": "小米",
"images": "http://xiaomi.com",
"price": 3999.00
},
"sort": [
3999.0
]
}
]
}
}
可以看到price为1的在查询结果的第一个.
