标签：java import Required neo4j springframework org found identifier data

spring cloud Alibaba 微服务项目如下错误：

Caused by: java.lang.IllegalStateException: Required identifier property not found for class com.huajun.kgbuilder.domainmodel.Movie!
    at org.springframework.data.mapping.PersistentEntity.getRequiredIdProperty(PersistentEntity.java:106)
    at org.springframework.data.repository.core.support.PersistentEntityInformation.getIdType(PersistentEntityInformation.java:74)
    at org.springframework.data.neo4j.repository.support.Neo4jRepositoryFactory.getTargetRepository(Neo4jRepositoryFactory.java:72)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:319)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:323)
    at org.springframework.data.util.Lazy.getNullable(Lazy.java:230)
    at org.springframework.data.util.Lazy.get(Lazy.java:114)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:329)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782)
    ... 46 common frames omitted
09:13:13.752 [Thread-33] WARN  c.a.n.c.h.HttpClientBeanHolder - [shutdown,108] - [HttpClientBeanHolder] Start destroying common HttpClient
Disconnected from the target VM, address: '127.0.0.1:1654', transport: 'socket'

Process finished with exit code 1

原因：微服务项目的jar包

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-neo4j</artifactId>
    <version>2.5.3</version>
</dependency>

实体类定义如下引用的是ogm包下文件，需要换成org.springframework.data.neo4j包下的文件

import org.neo4j.ogm.annotation.GeneratedValue;
import org.neo4j.ogm.annotation.Id;
import org.neo4j.ogm.annotation.NodeEntity;
import org.neo4j.ogm.annotation.Property;

正确配置

package com.huajun.kgbuilder.domainmodel;

import java.util.Collections;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;

import org.springframework.data.neo4j.core.schema.Id;
import org.springframework.data.neo4j.core.schema.Node;
import org.springframework.data.neo4j.core.schema.Property;
import org.springframework.data.neo4j.core.schema.Relationship;
import org.springframework.data.neo4j.core.schema.GeneratedValue;
import org.springframework.data.neo4j.core.support.UUIDStringGenerator;

@Node
public class Person {


//    @Id @GeneratedValue(UUIDStringGenerator.class)
//    private String id;

//    @Id @GeneratedValue(generatorRef = "myIdGenerator")
//    private String id;

    @Id
    @GeneratedValue
    private Long id;

    private String name;

    private Person() {
        // Empty constructor required as of Neo4j API 2.0.5
    }

    ;

    public Person(String name) {
        this.name = name;
    }

    /**
     * Neo4j doesn't REALLY have bi-directional relationships. It just means when querying
     * to ignore the direction of the relationship.
     * https://dzone.com/articles/modelling-data-neo4j
     */
    @Relationship(type = "TEAMMATE")
    public Set<Person> teammates;

    public void worksWith(Person person) {
        if (teammates == null) {
            teammates = new HashSet<>();
        }
        teammates.add(person);
    }

    public String toString() {
        return this.name + "'s teammates => "
                + Optional.ofNullable(this.teammates).orElse(
                Collections.emptySet()).stream()
                .map(Person::getName)
                .collect(Collectors.toList());
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

标签：java,import,Required,neo4j,springframework,org,found,identifier,data
来源： https://www.cnblogs.com/Jeely/p/15194083.html

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。