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Neo4j 数据导入
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一、安装与部署Neo4j
直接在官网下载安装包安装,解压即可。
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2.mysql 数据导入neo4j的jar包
apoc-3.4.0.1-all.jar mysql-connector-java-8.0.8-dmr.jar
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3.将对应jar包放在Neo4j的安装目录plugins文件目录里,然后在Neo4j的conf目录里的neo4j.conf文件的最后面加上
dbms.security.procedures.unrestricted=apoc.*,algo.*
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apoc.import.file.enabled=true
apoc.export.file.enabled=true -
注意:(APOC jar包要与neo4j版本对应,否则启动Neo4j有可能出现无法连接这种情况 我这里用到的Neo4j版本为3.4.6 APOC为3.4.0 本人曾经在Neo4j-3.5.0版本plugins文件目录里 添加APOC-3.4版本,出现启动Neo4j无法连接这种情况 )
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4.程序:
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package com.dataexa.neo4j.test;
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import org.neo4j.driver.v1.AuthTokens;
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import org.neo4j.driver.v1.Driver;
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import org.neo4j.driver.v1.GraphDatabase;
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import org.neo4j.driver.v1.Session;
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public class Connect {
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public static void main( String[] args) {
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Driver driver = GraphDatabase.driver( "bolt://localhost:7687", AuthTokens.basic( "neo4j", "root"));
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Session session = driver.session();
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String cypher = "create constraint on (n:ITEM) ASSERT n.itemid is unique"; //创建唯一索引,这样可以更快的导入数据
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session.run(cypher);
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cypher = "CALL apoc.load.jdbc(\n" +
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" 'jdbc:mysql://localhost/abc(数据库名)?user=root(数据库的登录用户)&password=root(数据库登录密码)&useUnicode=true&characterEncoding=utf8',\n" +
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" 'select * from yntest(表名)'\n" +
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") YIELD row\n" +
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"CREATE (:People { cardNo :row.cardNo,name : row.name,sex : row.sex," +
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"birthday : row.birthday,phone : row.phone})" +
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"CREATE (:People1 { cardNo1 : row.cardNo1,name1 : row.name1," +
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"sex1 : row.sex1,birthday1 : row.birthday1,phone1 : row.phone1})" +
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"CREATE (:People)-[r:relation{edge:'铁路同行',txcs:row.txcs}]->(People1)";
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///////"CREATE (:People { cardNo :row.cardNo,name : row.name,sex : row.sex," + "birthday : row.birthday,phone : row.phone})" + "CREATE (:People1 { cardNo1 : row.cardNo1,name1 : row.name1," + "sex1 : row.sex1,birthday1 : row.birthday1,phone1 : row.phone1})" + "CREATE (:People)-[r:relation{edge:'铁路同行',txcs:row.txcs}]->(People1)";
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//////以上是mysql中的表开头字段
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session.run(cypher);
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session.close();
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driver.close();
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}
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}
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使用APOC技术从MYSQL数据库导数据到Neo4j图数据库(JDBC)
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转载自www.cnblogs.com/jpfss/p/11393823.html
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