【Neo4j实践】项目集成启动报错：服务器不支持此驱动程序支持的任何协议版本（问题解决+调试源代码）

本文已参与「新人创作礼」活动，一起开启掘金创作之路。

SpringBoot集成Neo4j调试的时候报：

org.neo4j.driver.exceptions.ClientException: 
The server does not support any of the protocol versions supported by this driver. 
Ensure that you are using driver and server versions that are compatible with one another.

在网络上查找解决方法未果，但是看得出是驱动程序和服务器版本彼此不兼容的问题，由于服务器的JDK是1.8的，所以最初没有部署最新版本的neo4j（报错时使用的版本是3.4.5），调试项目的依赖版本调整也无法解决问题，最终重新部署了（openjdk-11+28 和 neo4j-4.2.7）才解决问题。

1.依赖及配置

<!-- springboot 版本 2.5.1 -->
<!--neo4j-->
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-neo4j</artifactId>
</dependency>
<!-- neo4j-ogm-http-driver -->
<dependency>
	<groupId>org.neo4j</groupId>
	<artifactId>neo4j-ogm-http-driver</artifactId>
	<version>2.1.5</version>
</dependency>

密码是必须修改的

spring:
  neo4j:
    uri: bolt://aliyun:7687
    authentication:
      username: neo4j
      password: neo4j1

2.源代码

/**
 * 部门类
 */
@NodeEntity(label = "dept")
@Data
@Builder
public class Dept {

    @Id
    @GeneratedValue
    private Long id;

    @Property(name = "deptName")
    private String deptName;

}

/**
 * 关系类
 */
@RelationshipEntity(type = "relationShip")
@Data
@Builder
public class RelationShip {

    @Id
    @GeneratedValue
    private Long id;

    @StartNode
    private Dept parent;

    @EndNode
    private Dept child;
}

/**
 * 两个继承Neo4jRepository的接口
 */
@Repository
public interface DeptRepository extends Neo4jRepository<Dept,Long> {}
@Repository
public interface RelationShipRepository extends Neo4jRepository<RelationShip, Long> {}

/**
 * 测试方法类
 */
@RestController
public class TestController {

    @Autowired
    private DeptRepository deptRepository;
    @Autowired
    private RelationShipRepository relationShipRepository;

    @GetMapping("create")
    public void create() {
        Dept root = Dept.builder().deptName("软件部").build();

        Dept dept1 = Dept.builder().deptName("架构组").build();
        Dept dept2 = Dept.builder().deptName("开发组").build();
        Dept dept3 = Dept.builder().deptName("实施组").build();

        Dept dept21 = Dept.builder().deptName("前端技术部").build();
        Dept dept22 = Dept.builder().deptName("后端技术部").build();
        Dept dept23 = Dept.builder().deptName("测试技术部").build();
        List<Dept> deptList = new ArrayList<>(Arrays.asList(root, dept1, dept2, dept3, dept21, dept22, dept23));
        deptRepository.saveAll(deptList);

        RelationShip relationShip1 = RelationShip.builder().parent(root).child(dept1).build();
        RelationShip relationShip2 = RelationShip.builder().parent(root).child(dept2).build();
        RelationShip relationShip3 = RelationShip.builder().parent(root).child(dept3).build();

        RelationShip relationShip21 = RelationShip.builder().parent(dept2).child(dept21).build();
        RelationShip relationShip22 = RelationShip.builder().parent(dept2).child(dept22).build();
        RelationShip relationShip23 = RelationShip.builder().parent(dept2).child(dept23).build();

        List<RelationShip> relationShipList = new ArrayList<>(Arrays.asList(relationShip1, relationShip2, relationShip3, relationShip21, relationShip22, relationShip23));
        relationShipRepository.saveAll(relationShipList);
    }
    
    @GetMapping("deleteAll")
    public void deleteAll() {
        deptRepository.deleteAll();
        relationShipRepository.deleteAll();
    }
}

3.结果

4.总结

回想一下，我是不是应该先测试一下不同版本的依赖再去重新部署呢？