我已经使用Spring-Data-Neo4J V 4.2.1，Neo4J-OGM v 2.1.2进行了设置。
我需要具有特定配置的嵌入式neo4J服务器进行测试。 cypher.forbid_shortestpath_common_nodes=false.

我在春季@configuration bean中尝试了这一点：

    @Bean
    public org.neo4j.ogm.config.Configuration getConfiguration() {
        org.neo4j.ogm.config.Configuration config = new org.neo4j.ogm.config.Configuration();
        config.driverConfiguration().setDriverClassName("org.neo4j.ogm.drivers.embedded.driver.EmbeddedDriver");
        config.set("cypher.forbid_shortestpath_common_nodes", false);
        return config;
    }

请，如何在Spring Java配置中进行设置？

看答案

这 cypher.forbid_shortestpath_common_nodes 是Neo4J设置，而不是SDN/OGM，因此创建它时需要将其提供给数据库。

理想情况下，嵌入式数据库的配置看起来与此相似：

    @Configuration
    @EnableNeo4jRepositories(basePackageClasses = UserRepository.class)
    @ComponentScan(basePackageClasses = UserService.class)
    static class EmbeddedConfig {

        @Bean(destroyMethod = "shutdown")
        public GraphDatabaseService graphDatabaseService() {
            GraphDatabaseService graphDatabaseService = new GraphDatabaseFactory()
                .newEmbeddedDatabaseBuilder(new File("target/graph.db"))
                .setConfig(GraphDatabaseSettings.forbid_shortestpath_common_nodes, "false")
                .newGraphDatabase();

            return graphDatabaseService;
        }

        @Bean
        public SessionFactory getSessionFactory() {
            org.neo4j.ogm.config.Configuration configuration = new org.neo4j.ogm.config.Configuration();
            EmbeddedDriver driver = new EmbeddedDriver(graphDatabaseService());
            Components.setDriver(driver);
            return new SessionFactory(configuration, User.class.getPackage().getName());
        }

        @Bean
        public Neo4jTransactionManager transactionManager() throws Exception {
            return new Neo4jTransactionManager(getSessionFactory());
        }
    }

然而 这不起作用 对于SDN 4.2.x，但是有一个解决方法：

        @Bean
        public SessionFactory getSessionFactory() {
            org.neo4j.ogm.config.Configuration configuration = new org.neo4j.ogm.config.Configuration();
            // Register your configuration here, this will confuse OGM so the driver you set below won't be destroyed
            Components.configure(configuration);

            // Register your driver
            EmbeddedDriver driver = new EmbeddedDriver(graphDatabaseService());
            Components.setDriver(driver);

            // Set driver class name so you won't get NPE
            configuration.driverConfiguration().setDriverClassName("org.neo4j.ogm.drivers.embedded.driver.EmbeddedDriver");

            return new SessionFactory(configuration, User.class.getPackage().getName());
        }
作者：Jeebiz  创建时间：2023-12-28 12:59
最后编辑：Jeebiz  更新时间：2023-12-28 13:00