neo4j图形数据库Java应用

CREATE(陈冠希:明星     {名称: "陈冠希"}),(王菲:明星         {名称: "王菲"}),(李亚鹏:明星     {名称: "李亚鹏"}),(瞿颖:明星         {名称: "瞿颖"}),(张柏芝:明星     {名称: "张柏芝"}),(谢霆锋:明星     {名称: "谢霆锋"}),(周迅:明星         {名称: "周迅"}),(张亚东:明星     {名称: "张亚东"}),(窦唯:明星         {名称: "窦唯"}),(窦鹏:明星         {名称: "窦鹏"}),(李大齐:明星     {名称: "李大齐"}),(朴树:明星         {名称: "朴树"}),(窦颖:明星         {名称: "窦颖"}),(梁朝伟:明星     {名称: "梁朝伟"}),(刘嘉玲:明星     {名称: "刘嘉玲"}),(周迅)-[:旧爱]->(窦鹏),(周迅)-[:旧爱]->(李大齐),(周迅)-[:旧爱]->(朴树),(周迅)-[:旧爱]->(李亚鹏),(周迅)-[:绯闻]->(梁朝伟),(周迅)-[:绯闻]->(谢霆锋),(王菲)-[:离异]->(李亚鹏),(王菲)-[:旧爱]->(谢霆锋),(王菲)-[:离异]->(窦唯),(谢霆锋)-[:旧友]->(陈冠希),(谢霆锋)-[:离异]->(张柏芝),(张亚东)-[:制作人]->(朴树),(张亚东)-[:离异]->(窦颖),(张亚东)-[:制作人]->(王菲),(李亚鹏)-[:旧爱]->(瞿颖),(陈冠希)-[:旧爱]->(张柏芝),(瞿颖)-[:旧爱]->(张亚东),(窦唯)-[:堂兄弟]->(窦鹏),(窦唯)-[:兄妹]->(窦颖),(梁朝伟)-[:夫妻]->(刘嘉玲),(王菲)-[:好友]->(刘嘉玲)

MATCH (n:明星) RETURN n

效果：

直接关系

MATCH m=(:明星 {名称:"周迅"})-[*..1]-() RETURN m

最短路径

MATCH p = AllShortestPaths((周迅:明星 {名称:"周迅"})-[*..6]-(王菲:明星 {名称:"王菲"})) RETURN p

效果：

MATCH p=(()<-[:旧爱]-()-[:旧爱]->()) RETURN p LIMIT 50

MATCH p=(()<-[:旧爱]-()<-[:旧爱]-()-[:旧爱]->()) RETURN p LIMIT 50

MATCH p=(()<-[:旧爱]-()<-[:旧爱]-()) RETURN p LIMIT 50

直接上代码.

bolt连接：

package com;import org.neo4j.driver.v1.AuthTokens;
import org.neo4j.driver.v1.Driver;
import org.neo4j.driver.v1.GraphDatabase;
import org.neo4j.driver.v1.Session;
import org.neo4j.driver.v1.StatementResult;
import org.neo4j.driver.v1.Transaction;
import org.neo4j.driver.v1.TransactionWork;import static org.neo4j.driver.v1.Values.parameters;public class HelloWorldExample implements AutoCloseable {private final Driver driver;public HelloWorldExample(String uri, String user, String password) {driver = GraphDatabase.driver(uri, AuthTokens.basic(user, password));}@Overridepublic void close() throws Exception {driver.close();}public void printGreeting(final String message) {try (Session session = driver.session()) {String greeting = session.writeTransaction(new TransactionWork<String>() {@Overridepublic String execute(Transaction tx) {StatementResult result = tx.run("CREATE (a:Greeting) "+ "SET a.message = $message "+ "RETURN a.message + ', from node ' + id(a)",parameters("message", message));return result.single().get(0).asString();}});System.out.println(greeting);}}public static void main(String... args) throws Exception {try (HelloWorldExample greeter = new HelloWorldExample("bolt://localhost:7687", "neo4j", "123456")) {greeter.printGreeting("hello, world");}}
}

package com;import static org.neo4j.driver.v1.Values.parameters;import java.util.HashMap;
import java.util.Map;import org.neo4j.driver.v1.AuthTokens;
import org.neo4j.driver.v1.Driver;
import org.neo4j.driver.v1.GraphDatabase;
import org.neo4j.driver.v1.Record;
import org.neo4j.driver.v1.Session;
import org.neo4j.driver.v1.StatementResult;
import org.neo4j.driver.v1.Value;public class Neo4jBoltAPIDBOperation {public static void main(String[] args) {// TODO Auto-generated method stubDriver driver = GraphDatabase.driver("bolt://127.0.0.1:7687",AuthTokens.basic("neo4j", "123456"));Session session = driver.session();session.run("CREATE (a:Person {name: {name}, title: {title}})",parameters("name", "gm", "title", "King"));StatementResult result = session.run("MATCH (a:Person) WHERE a.name = {name} "+ "RETURN a.name AS name, a.title AS title",parameters("name", "gm"));while (result.hasNext()) {Record record = (Record) result.next();System.out.println(record.get("title").asString() + " "+ record.get("name").asString());}session.close();driver.close();}}

直接操作数据库文件（确保服务已关闭）：

package com;import java.io.File;import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.Transaction;
import org.neo4j.graphdb.factory.GraphDatabaseFactory;public class Neo4jJavaAPIDBOperation {public static void main(String[] args) {GraphDatabaseFactory dbFactory = new GraphDatabaseFactory();GraphDatabaseService db = dbFactory.newEmbeddedDatabase(new File("E:/neo4j-community-3.3.5/data/databases/graph.db"));try (Transaction tx = db.beginTx()) {Node javaNode = db.createNode(Tutorials.JAVA);javaNode.setProperty("TutorialID", "JAVA001");javaNode.setProperty("Title", "Learn Java");javaNode.setProperty("NoOfChapters", "25");javaNode.setProperty("Status", "Completed");Node scalaNode = db.createNode(Tutorials.SCALA);scalaNode.setProperty("TutorialID", "SCALA001");scalaNode.setProperty("Title", "Learn Scala");scalaNode.setProperty("NoOfChapters", "20");scalaNode.setProperty("Status", "Completed");Relationship relationship = javaNode.createRelationshipTo(scalaNode, TutorialRelationships.JVM_LANGIAGES);relationship.setProperty("Id", "1234");relationship.setProperty("OOPS", "YES");relationship.setProperty("FP", "YES");tx.success();}System.out.println("Done successfully");}
}

package com;import org.neo4j.graphdb.Label;
public enum Tutorials implements Label {JAVA,SCALA,SQL,NEO4J;
}

package com;import org.neo4j.graphdb.RelationshipType;public enum TutorialRelationships implements RelationshipType {JVM_LANGIAGES, NON_JVM_LANGIAGES;
}

<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.test</groupId><artifactId>neo4j</artifactId><version>0.0.1-SNAPSHOT</version><dependencies><dependency><groupId>org.neo4j</groupId><artifactId>neo4j</artifactId><version>3.3.5</version></dependency><dependency><groupId>org.neo4j.driver</groupId><artifactId>neo4j-java-driver</artifactId><version>1.4.4</version></dependency></dependencies><build />
</project>

与Spring集成未完待续、、、

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