Neo4jOgm2.1的使用

一. 准备工作
本人系统：Mac OS
安装maven3.0：安装教程
如果eclipse中没有安装maven插件的话需要自己安装

二. neo4j ogm 2.1使用
1. 新建maven project
2.配置pom.xml,配置完成后会自动将所需要的各个jar包倒入到maven dependencies下。

<properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><neo4j.ogm.version>2.1.1</neo4j.ogm.version></properties><dependencies><dependency><groupId>org.neo4j</groupId><artifactId>neo4j-ogm-api</artifactId><version>${neo4j.ogm.version}</version></dependency><dependency><groupId>org.neo4j</groupId><artifactId>neo4j-ogm-core</artifactId><version>${neo4j.ogm.version}</version></dependency><dependency><groupId>org.neo4j</groupId><artifactId>neo4j-ogm-http-driver</artifactId><version>${neo4j.ogm.version}</version></dependency><dependency><groupId>org.neo4j</groupId><artifactId>neo4j-ogm-compiler</artifactId><version>${neo4j.ogm.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.14</version></dependency><dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId><version>1.1.3</version></dependency>
</dependencies>

3.开始编写代码,设置实体类
使用neo4j ogm的官方手册给出的Movie和Actor的例子：

@NodeEntity
public class Actor {@GraphIdprivate Long id;private String name;@Relationship(type = "ACTS_IN", direction = "OUTGOING")private Set<Movie> movies = new HashSet<>();public Actor() {}public Actor(String name) {this.name = name;}public void actsIn(Movie movie) {movies.add(movie);movie.getActors().add(this);}
}@NodeEntity
public class Movie {@GraphIdprivate Long id;private String title;private int released;@Relationship(type = "ACTS_IN", direction = "INCOMING")Set<Actor> actors;public Movie() {}public Movie(String title, int year) {this.title = title;this.released = year;}}

4 .配置
此处使用的是httpdriver，以此为例为例：
方法一：使用java代码进行配置
有两种写法：
（1）

Configuration configuration = new Configuration();configuration.driverConfiguration().setDriverClassName("org.neo4j.ogm.drivers.http.driver.HttpDriver").setURI("http://localhost:7474").setCredentials("xxx", "xxxxx");

session则使用如下代码：

SessionFactory sessionFactory = new SessionFactory(configuration，"com.qcl.test.entities");Session session = sessionFactory.openSession();

（2）

 Components.configuration().driverConfiguration().setDriverClassName("org.neo4j.ogm.drivers.http.driver.HttpDriver").setURI("http://xxx:xxxxx@localhost:7474").setCredentials("xxx", "xxxxx");

session如下：

SessionFactory sessionFactory = new SessionFactory("com.qcl.test.entities");Session session = sessionFactory.openSession();

方法二：使用ogm.properties自动配置
配置内容如下：

driver=org.neo4j.ogm.drivers.http.driver.HttpDriver
URI=http://xxx:xxxxx@localhost:7474

只需要将ogm.properties放在src/main/resources下面，然后使用上面的session代码就可以自动配置了。

5 .官方给出的完整测试代码：

//Set up the Session
SessionFactory sessionFactory = new SessionFactory("movies.domain");
Session session = sessionFactory.openSession();Movie movie = new Movie("The Matrix", 1999);Actor keanu = new Actor("Keanu Reeves");
keanu.actsIn(movie);Actor carrie = new Actor("Carrie-Ann Moss");
carrie.actsIn(movie);//Persist the movie. This persists the actors as well.
session.save(movie);//Load a movie
Movie matrix = session.load(Movie.class, movie.getId());
for(Actor actor : matrix.getActors()) {System.out.println("Actor: " + actor.getName());
}

三. 运行结果：

附录：完整代码可见本人github ,或者参见官方手册。

Neo4jOgm2.1的使用

Neo4jOgm2.1的使用相关推荐

最新文章

热门文章