Spring Data Elasticsearch 自定义存储库答案

【问题标题】：Spring Data Elasticsearch cusom repositorySpring Data Elasticsearch 自定义存储库
【发布时间】：2017-09-19 23:07:17
【问题描述】：

在我的 Spring Boot 应用程序中，我试图通过 Elasticsearch 实现模糊搜索。

这是我的 ES 配置：

@Profile("test")
@Configuration
@EnableElasticsearchRepositories(basePackages = "com.example.domain.repository.elasticsearch")
public class ElasticsearchTestConfig {
}

我有一个仓库：

@Repository
public interface ESDecisionRepository extends ElasticsearchRepository<ESDecision, String>, ESDecisionRepositoryCustom {
}

为了能够进行模糊搜索，我创建了一个自定义存储库：

public interface ESDecisionRepositoryCustom {

    public List<ESDecision> findFuzzyBySearchTerm(String searchTerm);

}

并提供了自定义实现：

@Repository
public class ESDecisionRepositoryCustomImpl implements ESDecisionRepositoryCustom {

    @Autowired
    protected ElasticsearchTemplate elasticsearchTemplate;

    @Override
    public List<ESDecision> findFuzzyBySearchTerm(String searchTerm) {
        Criteria c = new Criteria("name").fuzzy(searchTerm);
        return elasticsearchTemplate.queryForList(new CriteriaQuery(c), ESDecision.class);
    }

}

现在在启动过程中，我的应用程序失败并出现以下异常：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ESDecisionRepository': Invocation of init method failed; nested exception is org.springframework.data.mapping.PropertyReferenceException: No property searchTerm found for type ESDecision!
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
    ... 43 common frames omitted
Caused by: org.springframework.data.mapping.PropertyReferenceException: No property searchTerm found for type ESDecision!
    at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:77)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:329)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:309)
    at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:272)
    at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:243)
    at org.springframework.data.repository.query.parser.Part.<init>(Part.java:76)
    at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:247)
    at org.springframework.data.repository.query.parser.PartTree$Predicate.buildTree(PartTree.java:398)
    at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:378)
    at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:89)
    at org.springframework.data.elasticsearch.repository.query.ElasticsearchPartQuery.<init>(ElasticsearchPartQuery.java:44)
    at org.springframework.data.elasticsearch.repository.support.ElasticsearchRepositoryFactory$ElasticsearchQueryLookupStrategy.resolveQuery(ElasticsearchRepositoryFactory.java:119)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:436)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:221)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:277)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:263)
    at org.springframework.data.elasticsearch.repository.support.ElasticsearchRepositoryFactoryBean.afterPropertiesSet(ElasticsearchRepositoryFactoryBean.java:67)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
    ... 53 common frames omitted

我做错了什么以及如何解决？

【问题讨论】：

你的ESDecision实体类中有searchTerm属性吗？
不，我没有这样的财产
尝试将您的自定义 repo 实现名称更改为 ESDecisionRepositoryImpl 。自定义存储库实现有一个命名约定，您需要遵循它才能使其工作。查看docs
是的，这是个错误。非常感谢！
很高兴它有帮助:)

标签： spring spring-boot spring-data spring-data-elasticsearch

【解决方案1】：

将您的自定义存储库实现类名称从 ESDecisionRepositoryCustomImpl 更改为 ESDecisionRepositoryImpl。

来自文档

与核心存储库接口相比，要找到的类最重要的一点是其名称的 Impl 后缀（见下文）。

必须遵循命名约定才能使自定义存储库实现工作。查看docs

试试这个：

@Repository
public class ESDecisionRepositoryCustomImpl implements ESDecisionRepositoryCustom {

     @Autowired
     protected ElasticsearchTemplate elasticsearchTemplate;

     @Override
     public List<ESDecision> findFuzzyBySearchTerm(String searchTerm) {
         Criteria c = new Criteria("name").fuzzy(searchTerm);
         return elasticsearchTemplate.queryForList(new CriteriaQuery(c), ESDecision.class);
     }

}

希望这会有所帮助。

【讨论】：