neo4j

一、安装

1.安装JAVA8

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

2.添加neo4j源

wget -O - https://debian.neo4j.org/neotechnology.gpg.key | sudo apt-key add -
echo 'deb http://debian.neo4j.org/repo stable/' | sudo tee -a /etc/apt/sources.list.d/neo4j.list
sudo apt-get update


社区办:
sudo apt-get install neo4j=3.1.4
企业版(付费):
sudo apt-get install neo4j-enterprise=3.1.4

3.neo4j配置里表示对外开放http

dbms.connectors.default_listen_address=0.0.0.0

HTTP Connector. There must be exactly one HTTP connector.

dbms.connector.http.enabled=true
dbms.connector.http.listen_address=0.0.0.0:7474

二、批量导入数据

1.获取用户

mongo -u name -p password ip:port/db --shell ./getNode.js > node.csv

getNode.js：

var c = db.user.find();
var tmp = {};
print("userId:ID,:LABEL")
while(c.hasNext()) {
  tmp = c.next()
  tmp = tmp.userId + ",user";
  print(tmp);
}
exit

2.获取用户关系

mongo -u name -p password ip:port/db --shell ./getAllUserFri.js > relationship.csv

getRelationship.js：

var c = db.relationship.aggregate([{$match : {}},{$unwind: "$friends"}]);
var tmp = {};
print(":START_ID,:END_ID,:type")
while(c.hasNext()) {
  tmp = c.next()
  if (tmp.userId && tmp.friends.id){
      tmp = tmp.userId + ',' + tmp.friends.id + ",F";
      print(tmp);
  }
}
exit

打开文件修改格式 shift + g 到文件底部

3.导入信息

sudo neo4j-admin import --mode=csv --database=graph.db --nodes=./node.csv --relationships=./relationship.csv

graph.db为数据库存储位置必须为空，将路径删除即可，详细可到配置文件中查看 /etc/neo4j/neo4j.conf