问题描述
我有一个 Spring Boot 应用程序,我想同时在 MongoRepositories 和 ElasticsearchRepositories 中使用我的文档。
一旦我在@Document 中使用来自 mongoDb 的 @DBRef 注释,在应用程序启动期间就无法再创建 ElasticSearch 存储库,并且出现错误:
java.lang.UnsupportedOperationException
我的实体:
import lombok.Getter;
import lombok.Setter;
import org.springframework.data.annotation.Id;
import org.springframework.data.annotation.TypeAlias;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.mongodb.core.mapping.DBRef;
import java.util.List;
@Document(indexName = "ps")
@TypeAlias("person")
@Getter
@Setter
public class Person {
@Id
private String id;
@DBRef
private List<Address> addresses;
}
import lombok.Getter;
import lombok.Setter;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
@org.springframework.data.elasticsearch.annotations.Document(indexName = "address")
@Document(collection = "address")
@Getter
@Setter
public class Address {
@Id
private String id;
private String streetname;
}
配置
package backend.configuration;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;
import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
@EnableMongoRepositories(basePackages = "backend.repositories.mongo")
@EnableElasticsearchRepositories(basePackages = "backend.repositories.elastic")
@Configuration
public class BackendConfiguration {
}
ElasticSearch 存储库
package backend.repositories.elastic;
import backend.models.Person;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
public interface ElasticPersonRepository extends ElasticsearchRepository<Person,String> {
}
错误信息
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticPersonRepository' defined in me.rip.backend.repositories.elastic.ElasticPersonRepository defined in @EnableElasticsearchRepositories declared on BackendConfiguration: Invocation of init method failed; nested exception is java.lang.UnsupportedOperationException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:925) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.8.jar:5.3.8]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.8.jar:5.3.8]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) ~[spring-boot-2.5.2.jar:2.5.2]
at me.rip.backend.BackendApplication.main(BackendApplication.java:17) ~[main/:na]
Caused by: java.lang.UnsupportedOperationException: null
at org.springframework.data.elasticsearch.core.mapping.SimpleElasticsearchPersistentProperty.createAssociation(SimpleElasticsearchPersistentProperty.java:278) ~[spring-data-elasticsearch-4.2.2.jar:4.2.2]
at org.springframework.data.mapping.model.AbstractPersistentProperty.lambda$new$0(AbstractPersistentProperty.java:84) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.util.Lazy.getNullable(Lazy.java:230) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.util.Lazy.orElse(Lazy.java:169) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.mapping.model.AbstractPersistentProperty.getAssociation(AbstractPersistentProperty.java:271) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.mapping.PersistentProperty.getRequiredAssociation(PersistentProperty.java:188) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.createAndRegisterProperty(AbstractMappingContext.java:556) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.doWith(AbstractMappingContext.java:521) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:710) ~[spring-core-5.3.8.jar:5.3.8]
at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:384) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:258) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:201) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:87) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$6(RepositoryFactoryBeanSupport.java:326) ~[spring-data-commons-2.5.2.jar:2.5.2]
at java.base/java.util.Optional.ifPresent(Optional.java:176) ~[na:na]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:326) ~[spring-data-commons-2.5.2.jar:2.5.2]
at org.springframework.data.elasticsearch.repository.support.ElasticsearchRepositoryFactoryBean.afterPropertiesSet(ElasticsearchRepositoryFactoryBean.java:69) ~[spring-data-elasticsearch-4.2.2.jar:4.2.2]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ~[spring-beans-5.3.8.jar:5.3.8]
... 16 common frames omitted
有没有办法继续使用@DBReg 注释,即在 elasticsearch 映射中忽略它们?
解决方法
回答您的问题:否。
在 Spring Data Elasticsearch 中用于设置属性映射的代码(使用 PersistentEntities
和 PersistentProperties
对所有 Spring Data 模块通用。
此代码检查属性是否用 @Reference
注释;这是来自 Spring 数据库模块的注释,标记了一个属性,该属性标记了与不同实体的关联。并非所有 Spring Data 数据存储都支持关联,Spring Data Elasticsearch 不支持。
现在的问题是 Spring Data Elasticsearch 并不关心 @DBRef
,但是 @DBRef
本身是用 @Reference
注释的,所以任何用 @DBRef
注释的属性都是一个 { {1}}也是如此。然后来自 Spring Data commons 的代码尝试创建 Spring Data Elasticsearch 不支持的关联。
你能做什么?对不同的数据存储使用不同的实体,并将您的原始实体映射到这些存储特定的实体。