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：

@NodeEntitypublic class Actor {    @GraphId    private 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);    }}@NodeEntitypublic class Movie {    @GraphId    private 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 SessionSessionFactory 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 movieMovie 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。