✅ Docker 安装 Neo4j
前提条件:安装docker
打开docker desktop
docker run \--name neo4j \-p7474:7474 -p7687:7687 \-d \-e NEO4J_AUTH=neo4j/password123 \neo4j:5
默认用户名是 neo4j
,密码是你设置的,比如上面是 password123
✅用 Python 驱动连接 Neo4j
可以使用 Neo4j 官方 Python 驱动 neo4j
:
pip install neo4j
然后在代码中这样连接:
from neo4j import GraphDatabase, RoutingControlURI = "neo4j://localhost:7687"
AUTH = ("neo4j", "password123")def add_friend(driver, name, friend_name):driver.execute_query("MERGE (a:Person {name: $name}) ""MERGE (friend:Person {name: $friend_name}) ""MERGE (a)-[:KNOWS]->(friend)",name=name, friend_name=friend_name, database_="neo4j",)def print_friends(driver, name):records, _, _ = driver.execute_query("MATCH (a:Person)-[:KNOWS]->(friend) WHERE a.name = $name ""RETURN friend.name ORDER BY friend.name",name=name, database_="neo4j", routing_=RoutingControl.READ,)for record in records:print(record["friend.name"])with GraphDatabase.driver(URI, auth=AUTH) as driver:add_friend(driver, "Arthur", "Guinevere")add_friend(driver, "Arthur", "Lancelot")add_friend(driver, "Arthur", "Merlin")print_friends(driver, "Arthur")
Guinevere
Lancelot
Merlin
浏览器访问:http://localhost:7474