系统环境：mac

参考：
快速入门知识图谱 - Neo4J
https://zhuanlan.zhihu.com/p/88745411
https://zhuanlan.zhihu.com/p/313553691

下载网址：
https://neo4j.com/deployment-center/#community

解压：
tar -zvxf neo4j-community-4.4.32-unix.tar.gz

启动：
neo4j-community-4.4.32/bin/neo4j start
异常信息：
Unsupported Java 1.8.0_401 detected. Please use Oracle(R) Java(TM) 11, OpenJDK(TM) 11 to run Neo4j Server.
需要java 11才能运行。

解决：
下载java 11，Oracle网址：
https://www.oracle.com/java/technologies/downloads/archive/
https://www.oracle.com/java/technologies/javase/jdk11-archive-downloads.html

解压jdk 11：
tar -zvxf jdk-11.0.21_macos-x64_bin.tar.gz

修改neo4j的bin/neo4j文件：
vim  bin/neo4j
添加一行：
JAVA_HOME=/install_soft/jdk-11.0.21.jdk/Contents/Home
保存退出

启动neo4j命令：
bin/neo4j start

启动信息：
Directories in use:
home:         /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32
config:       /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32/conf
logs:         /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32/logs
plugins:      /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32/plugins
import:       /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32/import
data:         /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32/data
certificates: /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32/certificates
licenses:     /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32/licenses
run:          /Users/sunchao/Desktop/install_soft/neo4j-community-4.4.32/run
Starting Neo4j.
Started neo4j (pid:1276). It is available at http://localhost:7474
There may be a short delay until the server is ready.

浏览器访问：
http://localhost:7474/browser/

链接neo4j数据库：
bolt://localhost:7687
neo4j://localhost:7687

用户名：neo4j
密码：neo4j

链接上以后，一定要修改密码，如 1234 。

创建节点：Person 标签
CREATE (n:Person {name:'zhangsan'}) RETURN n ;
CREATE (n:Person {name:'lisi'}) RETURN n ;
CREATE (n:Person {name:'wangwu'}) RETURN n ;
CREATE (n:Person {name:'zhaoliu'}) RETURN n ;
CREATE (n:Person {name:'maomao'}) RETURN n ;
CREATE (n:Person {name:'gougou'}) RETURN n ;

创建链接：FRIENDS 关系
MATCH (a:Person {name:'maomao'}),   (b:Person {name:'gougou'}) MERGE (a)-[:FRIENDS]->(b) ;

创建关系：附带属性
MATCH (a:Person {name:'maomao'}),   (b:Person {name:'gougou'}) MERGE (a)-[:FRIENDS {since:2024}]->(b) ;