java图数据库

import org.neo4j.driver.AuthTokens;
import org.neo4j.driver.Driver;
import org.neo4j.driver.GraphDatabase;
import org.neo4j.driver.Session;

public class Neo4jExample {
    public static void main(String[] args) {
        // 创建驱动程序实例
        Driver driver = GraphDatabase.driver("bolt://localhost:7687", AuthTokens.basic("username", "password"));
        try (Session session = driver.session()) {
            // 创建节点和关系
            String createNodeQuery = "CREATE (a:Person {name: 'Alice'})";
            session.run(createNodeQuery);

            String createRelationshipQuery = "MATCH (a:Person {name: 'Alice'}), (b:Person {name: 'Bob'}) " +
                                           "CREATE (a)-[:KNOWS]->(b)";
            session.run(createRelationshipQuery);

            // 查询节点和关系
            String query = "MATCH (a:Person)-[r]->(b:Person) RETURN a, r, b";
            session.run(query).forEach(record -> {
                System.out.println(record.get("a").asNode().get("name").asString());
                System.out.println(record.get("r").asRelationship().getType().name());
                System.out.println(record.get("b").asNode().get("name").asString());
            });
        } finally {
            driver.close();
        }
    }
}