java连接neo4j - HelloWorld开发者社区

呼、博客要落灰了

记录一下Java连接neo4j的问题。

首先是neo4j的下载和配置，基本参考https://blog.csdn.net/appleyk/article/details/79091898

1、下载jdk

2、下载neo4j的community版本或者desktop版本下载地址：https://neo4j.com/download-center/

3、配置环境变量 NEO4J\_HOME=解压地址、path=%NEO4J\_HOME%\\bin;

4、验证是否安装成功:在cmd中运行neo4j.bat console

5、注册neo4j服务：neo4j install-service

6、注册后就可以使用neo4j start 来启动服务。

然后是在eclipse中新建maven项目

1、利用maven导入neo4j和java连接的包neo4j-java-driver

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.recom</groupId> <artifactId>recommender</artifactId> <version>0.0.1-SNAPSHOT</version> <dependencies> <!-- https://mvnrepository.com/artifact/org.neo4j.driver/neo4j-java-driver --> <dependency> <groupId>org.neo4j.driver</groupId> <artifactId>neo4j-java-driver</artifactId> <version>1.7.2</version> </dependency>

</dependencies> </project>

2、编写类测试连接

public class App { public static void main(String\[\] args) { Driver driver=GraphDatabase.driver("bolt://localhost:7687",AuthTokens.basic("neo4j", "neo4j")); try(Session session=driver.session()){ try(Transaction transaction=session.beginTransaction()){ transaction.run("create(n:A1{NAME:{NAME},TITLE:{TITLE}})", Values.parameters("NAME","james","TITLE","King")); transaction.success(); } try(Transaction tx=session.beginTransaction()) { StatementResult result=tx.run("match(a:A1) WHERE a.NAME = {NAME} RETURN a.NAME AS NAME,a.TITLE AS TITLE", Values.parameters("NAME","james")); while (result.hasNext()) { Record record=result.next(); System.out.println(String.format("%s %s",record.get("TITLE").asString(),record.get("NAME").asString()));

            }
        } 
    }
    driver.close();
}

}