官网下载社区版：Neo4j Download Center - Neo4j Graph Data Platform
由于neo4j是java写的，所以根据自己需求，3.X版本需要JDK8的环境，4.X是JDK11的环境
下载3.X版本后，解压，进入bin目录下，输入命令
./neo4j.bat console
启动数据库
D:deployneo4jneo4j-community-3.5.31bin>neo4j.bat console 2022-07-08 03:08:16.373+0000 WARN The version of the Java runtime you are using does not include some important security features. Please use a JRE of version 8u121 or higher. 2022-07-08 03:08:16.381+0000 INFO ======== Neo4j 3.5.31 ======== 2022-07-08 03:08:16.388+0000 INFO Starting... 2022-07-08 03:08:23.288+0000 INFO Bolt enabled on 127.0.0.1:7687. 2022-07-08 03:08:24.707+0000 INFO Started. 2022-07-08 03:08:25.512+0000 INFO Remote interface available at http://localhost:7474/
7474端口是自带的web端可视化界面，7687则是服务链接地址
初始化用户名密码都是neo4j，进入后则可修改密码
成功进入数据库后，如果有数据需要清空的话，输入命令，清空数据
MATCH (n) BETACH DELETE n
如果清除Node Labels的话，需要谨慎删除对应data->databases文件夹下的graph.db文件夹下的内容
