springboot使用neo4j


springboot2.2使用neo4j
第一次更新先放一些代码进来,下次加注释
1.引入相应的包
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-data-neo4j</artifactId>
</dependency>

2.配置neo4j

spring.data.neo4j.uri=bolt://localhost:7687
spring.data.neo4j.username=neo4j
spring.data.neo4j.password=admin

@Bean
public org.neo4j.ogm.config.Configuration getConfiguration(){
  org.neo4j.ogm.config.Configuration configuration = new org.neo4j.ogm.config.Configuration.Builder()
    .uri(environment.getProperty("spring.data.neo4j.uri"))
    .connectionPoolSize(100)
    .credentials(environment.getProperty("spring.data.neo4j.username"), environment.getProperty("spring.data.neo4j.password"))

    .withBasePackages("com.distribute.order.repository")

    .build();

  return configuration;
}

@Bean
public SessionFactory sessionFactory(){
  return new SessionFactory(getConfiguration());
}

@Bean("neo4jTransaction")
public Neo4jTransactionManager neo4jTransactionManager(SessionFactory sessionFactory){
  return new Neo4jTransactionManager(sessionFactory);
}

3.配置接口
public interface CommonRepository extends Neo4jRepository{

  @Query(" create(n:Person{name:'bob',born:'1990',location:'sjz'}) ")
  void addNode();

  @Query(" match(n) detach delete n ")
  void deleteAll();

  @Query(" match(n:Person{name:{0}}) return n ")
  List<Map<String,Object>> findPerson(String name);

  @Query(" create(movies:Movie{name:'starWars',released:'1990',title:'star wars'}) ")
  void addNodeParent();
}

4.service层使用

@Autowired
private CommonRepository commonRepository;

@Override
@Transactional(value = "neo4jTransaction")
public Result addNode(Map<String, Object> params) throws Exception{
  try{
    commonRepository.addNode();
    commonRepository.addNodeParent();
  }catch(Exception e){
    e.printStackTrace();
    log.error("新增失败",e);

    throw new RuntimeException("新增失败");
  }

  return new Result();
}

5.个人疑问
@Transactional(value = "transactionManager")默认事务管理器不会管理neo4j的事务
但是@Transactional(value = "neo4jTransaction"),使用neo4j的事务管理器,则可以同时管理mysql及neo4j的事务。但是没有查到什么资料,要是您知道,希望可以教教我


免责声明!

本站转载的文章为个人学习借鉴使用,本站对版权不负任何法律责任。如果侵犯了您的隐私权益,请联系本站邮箱yoyou2525@163.com删除。



 
粤ICP备18138465号  © 2018-2025 CODEPRJ.COM