学习neo4j

2024-12-20

字数统计: 377字 | 阅读时长: 2分

neo4j是优秀的图数据库

一、安装

Adding the Debian repository

Just give me the latest Neo4j versions
This is a good place to start if you are unsure, but we do not recommend this for production or business critical installations:

wget -O - https://debian.neo4j.com/neotechnology.gpg.key | sudo apt-key add -
echo 'deb https://debian.neo4j.com stable latest' | sudo tee /etc/apt/sources.list.d/neo4j.list
sudo apt-get update
    
Neo4j version 5.x
wget -O - https://debian.neo4j.com/neotechnology.gpg.key | sudo apt-key add -
echo 'deb https://debian.neo4j.com stable 5' | sudo tee /etc/apt/sources.list.d/neo4j.list
sudo apt-get update

Installing Neo4j

To install Neo4j Community Edition:

1	sudo apt-get install neo4j

二、Neo4j与jdk间的版本匹配

Neo4j版本3.x对应java8

Neo4j版本4.x对应java11

Neo4j版本5.x对应java17

三、安装jdk,以debian12为例

https://www.oracle.com/java/technologies/downloads

安装jdk17

1 2	sudo apt install openjdk-17-jdk -y java -version

以arm64安装jdk21.0.5为例

sudo su
_path=$(pwd)
cd /usr/local/
wget https://download.oracle.com/java/21/latest/jdk-21_linux-aarch64_bin.tar.gz
tar zxvf ./jdk-21_linux-aarch64_bin.tar.gz
rm ./jdk-21_linux-aarch64_bin.tar.gz
ln -s -f /usr/local/jdk-21.0.5/bin/java /usr/local/bin
ln -s -f /usr/local/jdk-21.0.5/bin/javac /usr/local/bin
cd $_path

四、neo4j常用设置

设置远程访问

修改/etc/neo4j/neo4j.conf文件，找到

#server.http.listen_address=:7474
#server.bolt.listen_address=:7687
去掉前面的#，改成
server.http.listen_address=0.0.0.0:7474
server.bolt.listen_address=0.0.0.0:7687

忘记密码，怎么办？

https://neo4j.com/docs/operations-manual/current/authentication-authorization/password-and-user-recovery/

修改/etc/neo4j/neo4j.conf,找到

#dbms.security.auth_enabled=false

去掉前面的#，保存文件，然后sudo neo4j restart

cypher-shell -d system
ALTER USER neo4j SET PASSWORD ‘新密码’;
:exit;
修改/etc/neo4j/neo4j.conf,改回#dbms.security.auth_enabled=false，然后sudo neo4j restart