SpringBoot 整合 Neo4j 并进行简单使用

依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-neo4j</artifactId>
</dependency>

配置文件

#新配置----------
spring.neo4j.uri=bolt://127.0.0.1:7687
spring.neo4j.authentication.username=neo4j
spring.neo4j.authentication.password=123456

#旧配置----------
#spring.data.neo4j.uri=bolt://127.0.0.1:7687
#spring.data.neo4j.username=neo4j
#spring.data.neo4j.password=123456

创建bean

@Data
//标签名
@Node(labels = {"aaaaaa"})
public class UserDo {

	//ID，添加会自动生成
    @Id
    @GeneratedValue
    private Long id;

    @Property
    private String name;

	//关系注解
    @Relationship
    private UserDo userDo;

}

dao

@Component
//Neo4jRepository提供了很多增删改查的方法
public interface Neo4jDao extends Neo4jRepository<UserDo,Long> {

	//可以自定语句
    @Query("match (aa:aaaaaa{name:$name}) return aa")
    List<UserDo> getUserDo(@Param("name") String name);

}

service

@Service
public class TestService {

	//自动注入
    @Autowired
    private Neo4jDao neo4jDao;

    /**
     * 查询节点
     */
    public void test1(){
    	//接口有的查询
        UserDo userDo = neo4jDao.findById(18L).get();
        System.out.println(userDo);

		//自定义查询
        List<UserDo> userDos = neo4jDao.getUserDo("大大");
        System.out.println(userDos);
    }

    /**
     * 添加节点
     */
    public void test2(){
        UserDo userDo1 = new UserDo();
        UserDo userDo2 = new UserDo();
        userDo1.setId(18L);
        userDo2.setId(19L);
        //设置关系 userDo1->userDo2
        userDo1.setUserDo(userDo2);
        //使用接口有的方法添加节点
        neo4jDao.save(userDo1);
    }

}