一、Python使用
python
复制代码
from elasticsearch import Elasticsearch
obj = Elasticsearch()
# 创建索引（Index）
result = obj.indices.create(index='user', body={"userid":'1','username':'lqz'},ignore=400)
# print(result)
# 删除索引
# result = obj.indices.delete(index='user', ignore=[400, 404])
# 插入数据
# data = {'userid': '1', 'username': 'lqz','password':'123'}
# result = obj.create(index='news', doc_type='politics', id=1, body=data)
# print(result)
# 更新数据
'''
不用doc包裹会报错
ActionRequestValidationException[Validation Failed: 1: script or doc is missing
'''
# data ={'doc':{'userid': '1', 'username': 'lqz','password':'123ee','test':'test'}}
# result = obj.update(index='news', doc_type='politics', body=data, id=1)
# print(result)
# 删除数据
# result = obj.delete(index='news', doc_type='politics', id=1)
# 查询
# 查找所有文档
query = {'query': {'match_all': {}}}
# 查找名字叫做jack的所有文档
# query = {'query': {'term': {'username': 'lqz'}}}
# 查找年龄大于11的所有文档
# query = {'query': {'range': {'age': {'gt': 11}}}}
allDoc = obj.search(index='news', doc_type='politics', body=query)
print(allDoc['hits']['hits'][0]['_source'])
二、Django/Flask集成
1、elasticsearch-dsl
python
复制代码
#安装： pip3 install elasticsearch-dsl
#示例
from datetime import datetime
from elasticsearch_dsl import Document, Date, Nested, Boolean, \
analyzer, InnerDoc, Completion, Keyword, Text
html_strip = analyzer('html_strip',
tokenizer="standard",
filter=["standard", "lowercase", "stop", "snowball"],
char_filter=["html_strip"]
)
class Comment(InnerDoc):
author = Text(fields={'raw': Keyword()})
content = Text(analyzer='snowball')
created_at = Date()
def age(self):
return datetime.now() - self.created_at
class Post(Document):
title = Text()
title_suggest = Completion()
created_at = Date()
published = Boolean()
category = Text(
analyzer=html_strip,
fields={'raw': Keyword()}
)
comments = Nested(Comment)
class Index:
name = 'blog'
def add_comment(self, author, content):
self.comments.append(
Comment(author=author, content=content, created_at=datetime.now()))
def save(self, ** kwargs):
self.created_at = datetime.now()
return super().save(** kwargs)
2、django集成
python
复制代码
from datetime import datetime
from elasticsearch_dsl import Document, Date, Nested, Boolean,analyzer, InnerDoc, Completion, Keyword, Text,Integer
from elasticsearch_dsl.connections import connections
connections.create_connection(hosts=["localhost"])
class Article(Document):
title = Text(analyzer='ik_max_word', search_analyzer="ik_max_word", fields={'title': Keyword()})
author = Text()
class Index:
name = 'myindex'
def save(self, ** kwargs):
return super(Article, self).save(** kwargs)
if __name__ == '__main__':
# Article.init() # 创建映射
# 保存数据
# article = Article()
# article.title = "测试测试"
# article.save() # 数据就保存了
#查询数据
# s=Article.search()
# s = s.filter('match', title="测试")
#
# results = s.execute()
# print(results)
#删除数据
# s = Article.search()
# s = s.filter('match', title="测试").delete()
#修改数据
# s = Article().search()
# s = s.filter('match', title="测试")
# results = s.execute()
# print(results[0])
# results[0].title="xxx"
# results[0].save()