python操作ElasticSearch的基础组件
Project description
zdpapi_elastic_search
python快速操作ElasticSearch的组件
一、快速入门案例
安装
pip install zdpapi_elastic_search
增删改查案例
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
# 连接ES
es = EsClient()
print(es.conn)
# 查询
query = {
"query": {
"match_all": {}
}
}
result = es.find(index="megacorp", body=query)
print(result)
# 新增
# 不指定id 自动生成
es.add(index="megacorp",body={"first_name":"xiao","last_name":"xiao", 'age': 25, 'about': 'I love to go rock climbing', 'interests': ['game', 'play']})
# 指定IDwu
es.add(index="megacorp",id=4,body={"first_name":"xiao","last_name":"wu", 'age': 66, 'about': 'I love to go rock climbing', 'interests': ['sleep', 'eat']})
# 根据ID删除
es.delete(index='megacorp', id=4)
二、常用功能
2.1 查看集群的健康状态
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
# 连接ES
es = EsClient()
# 查看集群的健康状态
print(es.health())
2.2 查看集群的基本信息
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
# 连接ES
es = EsClient()
# 查看集群的基本信息
print(es.info())
2.3 查看集群其他信息
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
# 连接ES
es = EsClient()
# 查看集群的详细信息
print(es.detail())
# 查看当前客户端信息
print(es.client_info())
# 查看所有的索引
print(es.indexs())
# 查看集群的更多信息
print(es.stats())
2.4 查看集群的任务
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
# 连接ES
es = EsClient()
# 查看集群的任务
print(es.tasks_get())
# 查看集群的列表
print(es.tasks_list())
三、增删改查
3.1 增加数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 添加索引 已存在会报错
# print(es.add_index("persons"))
#index,doc_type,id都一致時會覆蓋
#插入資料
es.add(index="persons",doc_type="mytype",id=2,body={"name":"李四","age":20,"time":datetime.now()})
es.add(index="persons", doc_type="mytype", id=4, body={
"name1": "李四", "name2": "張三", "age": 20, "time": datetime.now()})
es.add(index="persons", doc_type="mytype", id=5, body={
"name1": "張三", "name2": "李四", "age": 20, "time": datetime.now()})
es.add(index="persons", doc_type="mytype", id=1, body={
"name": "張三", "age": 18, "time": datetime.now()})
#沒有索引就建立
es.add(index="persons111", doc_type="mytype",id=3,body={"name":"王五","age":20,"time":datetime.now()})
# 查询所有索引
print(es.find_all_index())
print(es.indexs())
# 查询所有数据
res = es.find()
print(res)
3.2 根据ID查询数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 根据ID查询
res = es.find(index="persons", doc_type="mytype", id=1)
print(res)
3.3 查询所有数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询所有数据
res = es.find(index="persons")
print(res)
3.4 更新数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
#更新一條資料,需要指定index,doc_type,id
print(es.find(index="persons", id=1))
es.update(index="persons", doc_type="mytype", id=1, body={"doc": {"age": 10}})
print(es.find(index="persons", id=1))
print("==================")
# 条件更新
query = {"script": {
"source": "ctx._source['age']=1" # 改為字串時要加引號,"ctx._source['age']='張三'"
},
'query': {
'range': {
'age': {
'lt': 30
}
}
}
}
res = es.update(index="persons", doc_type="mytype", query=query)
print(res)
3.5 删除数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 根据ID删除
res = es.delete(index="persons", id='2')
print(res)
# 根据条件删除
res = es.delete(index="persons", query={'query': {'match': {'any': 'data'}}})
print(res)
# 删除索引
res = es.delete('persons')
print(res)
四、查询
4.1 查询年龄为20的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询所有数据
body = {
"query": {
"term": {
"age": 20
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.2 查询年龄为18或20的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询年龄为18或20的数据
body = {
"query": {
"terms": {
"age": [
18, 20
]
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.3 查询名字包含“張”的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询名字包含“張”的数据
body = {
"query": {
"match": {
"name1": "張"
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.4 查询name1和name2中都包含“四”的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询name1和name2中都包含"四"的数据
body = {
"query": {
"multi_match": {
"query": "四",
"fields": ["name1", "name2"]
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.5 查询ID为1或2的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询ID为1或2的数据
body = {
"query": {
"ids": {
"values": [
"1", "2"
]
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.6 查询name1=张三或者age=20的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# must(都滿足),should(其中一個滿足),must_not(都不滿足)
# 查询name1=张三或者age=20的数据
body = {
"query": {
"bool": {
"should": [
{
"term": {
"name": "張三"
}
},
{
"term": {
"age": 20
}
}
]
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.7 查詢18<=age<=30的所有資料
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
'''
range不支援:
eq 等於
neq 不等於
range支援:
gt: greater than 大於
gte: greater than or equal 大於等於
lt: less than 小於
lte: less than or equal 小於等於
'''
# 查詢18<=age<=30的所有資料
body = {
"query": {
"range": {
"age": {
"gte": 18, # >=18
"lte": 30 # <=30
}
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.8查询年龄最小的4条数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 分页查询
body = {
"query": {
"match_all": {}
},
"sort": [{"age": {"order": "asc"}}], # 排序,asc是指定列按升序排列,desc則是指定列按降序排列
"from": 0, # 开始索引
"size": 4 # 获取4条数据
}
res = es.find(index="persons", body=body)
print(res)
4.9 查询name1以"張"开头的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询name1以"張"开头的数据
body = {
"query": {
"prefix": {
"name1": "張"
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.10 查询name1以"三"结尾的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询name1以"三"结尾的数据
body = {
"query": {
"wildcard": {
"name1": "*三"
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.11 查询所有数据并根据年龄升序
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询所有数据并根据年龄升序
body = {
"query": {
"match_all": {}
},
"sort": {
"age": { # 根据年龄升序
"order": "asc" # asc升序,desc降序
}
}
}
res = es.find(index="persons", body=body)
print(res)
4.12 查询所有数据并根据年龄升序且只获取ID
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询所有数据并根据年龄升序且只获取ID
body = {
"query": {
"match_all": {}
},
"sort": {
"age": { # 根据年龄升序
"order": "asc" # asc升序,desc降序
}
}
}
res = es.find(index="persons", body=body, filter_path=["hits.hits._id"])
print(res)
4.13 查询数据总数
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
# 查询数据总数
res = es.find_count()
print(res)
res = es.find_count(index="persons")
print(res)
4.14 查询年龄最小的数据
# 使用python操作ElasticSearch
from zdpapi_elastic_search import EsClient
from datetime import datetime
# 连接ES
es = EsClient()
'''
min:最小
max:最大
sum:求和
avg:平均值
'''
# 最小值
body = {
"query": {
"match_all": {}
},
"aggs": { # 聚合查詢
"min_age": { # 最小值的key
"min": { # 最小
"field": "age" # 查詢"age"的最小值
}
}
}
}
res = es.find(index="persons", body=body)
print(res)
print(res['aggregations'])
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