安装neo4j server的社区版本,相比neo4j desktop版本更容易操作
编辑系统变量区的Path,点击新建,然后输入 %JAVA_HOME%\bin
打开命令提示符CMD(WIN+R,输入cmd),输入 java -version,版本安装成功
刚开始按照,JDK存在多个版本,虽然java -version显示为jdk11,但是neo4j启动时按时以jdk15启动的,导致报错。后来发现环境变量中还存在jdk15,将其在环境变量中删除。
下载后无需安装,直接解压至合适的路径
2.2配置环境变量
将按照路径的bin目录加到环境变量
D:\Program Files (x86)\neo4j-community-4.4.10\bin
neo4j console
在浏览器中输入界面中给出的网址http://localhost:7474/,则会显示如下界面。
默认的用户名和密码均为neo4j
导入抽检数据
空格不识别,需要替换
导入csv
load csv WITH HEADERS from ‘file:///fv_cj_japan.csv’ as line
MERGE (a:Japan {itemid: line.itemid, title:line.title, catid:line.catid, xm:line.xm})
return a
导入分类及关系
load csv WITH HEADERS from ‘file:///fv_category.csv’ as line
Create (b:Category {catid: line.catid, catname:line.catname})
return b
MATCH (b:Category) WITH b MATCH (a:Japan) WHERE a.catid = b.catid CREATE (a)-[r:relation]->(b) return b,a
导入不合格原因及关系
load csv WITH HEADERS from ‘file:///fv_cj_xm.csv’ as line
Create (d:Xm {itemid: line.itemid, name:line.name})
return d
MATCH (d:Xm) WITH d MATCH (a:Japan) WHERE a.xm = d.itemid CREATE (a)-[xm_r:xm_relation]->(d) return d,a
删除节点,必须同时删除关系
load csv WITH HEADERS from ‘file:///fv_cj_japan.csv’ as line
MERGE(a:Japan{itemid:line.itemid,title:line.title,catid:line.catid,xm:line.xm})
DETACH DELETE a
Original: https://blog.csdn.net/hforever99/article/details/126517414
Author: yuan86_12
Title: neo4j安装与启动
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