NEO4J and Springdata Integration

1. The jar package to be imported by MAVEN project

<!--neo4j--
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j</artifactId>
<version>4.1.1.RELEASE</version>
</dependency>

<dependency>
<groupId>org.neo4j.app</groupId>
<artifactId>neo4j-server</artifactId>
<version>2.3.2</version>
</dependency>

2. jar package corresponding to spring

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>

3, load the neo4j drive configuration

@Configuration @enableneo4jrepositories ("Com.neo4j.repository") @EnableTransactionManagement Public classNeo4japplicationextendsneo4jconfiguration { Public Static Final intNeo4j_port = 7474; @Bean Publicsessionfactory getsessionfactory () {return NewSessionfactory ("Com.neo4j.domain"); }//Configure Transaction @Bean @Qualifier ("Neo4jtransactionmanager")     PublicNeo4jtransactionmanager Neo4jtransactionmanager ()throwsException {return NewNeo4jtransactionmanager (GetSession ()); }}

4, the connection method uses Httpdriver

Add configuration file Ogm.properties

Driver=org.neo4j.ogm.drivers.http.driver.httpdriver
Uri=http://neo4j:[email protected]:7474

5. Domain Entity Configuration

//node annotations (you can add label labels)@NodeEntity Public classthing{//ID of the node in neo4j       PrivateLong ID;  PublicLong getId () {returnID; } @Override Public Booleanequals (Object o) {if( This==o)return true; if(O = =NULL|| id = =NULL|| GetClass ()! =O.getclass ())return false; Entity entity=(Entity) o; if(!id.equals (entity.id))return false; return true; } @Override Public inthashcode () {return(id = =NULL) ? -1: Id.hashcode (); }        //Properties    PrivateString userId; PrivateString name; PrivateString desc; //Configuring Transformations@DateString ("Yy-mm-dd")    PrivateDate DateTime; //Set Relationship@Relationship (type = "Have_prop", direction=relationship.outgoing) List<Property> Properties =NewArraylist<property>(); @Relationship (Type= "Have_service", direction=relationship.outgoing) Set<Service> Services =NewHashset<service>(); @Relationship (Type= "Have_prop") Set<ThingPropRelation> proprelations =NewHashset<thingproprelation>(); @Relationship (Type= "Have_service") Set<ThingServiceRelation> servicerelations =NewHashset<thingservicerelation>(); @Relationship (Type= "Have_service") Set<ThingServiceRelation> servicerelations =NewHashset<thingservicerelation>();}

Set the relationship of a node

//set up a relationship entity@RelationshipEntity (type= "Have_prop") Public classThingproprelationextendsEntity {//Start Node@StartNode Thing Thing; //End Node@EndNode property;  Publicthingproprelation () {} PublicThing getthing () {returnthing; }     Public voidsetthing (Thing Thing) { This. Thing =thing; }     PublicProperty GetProperty () {returnProperty ; }     Public voidSetProperty (property) { This. property =Property ; }}

6. Set Repository

// Interface Inheritance Graphrepository // provides the basic save Modify Delete query function // Special queries can be implemented by @query annotations  Public Interface extends Graphrepository<thing> {    Thing findbyname (String name);        @Query ("MATCH (t:thing {name:{0}})-[r:have_prop]-> (p) RETURN P")    iterable<Property> getthingpropertybythingname (String thingname);}

7. Application

@Autowired Private

Call

Thing Thing = Thingrepository.findbyname ("Thing");

NEO4J and Springdata Integration