Spring JPA Hibernate查询缓存不起作用 | Hibernate查询缓存不起作用

本文介绍了Spring JPA Hibernate查询缓存不起作用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我使用Spring Boot 1.4.1和spring-boot-starter-data-jpa

I use Spring Boot 1.4.1 AND spring-boot-starter-data-jpa

查询我的自定义方法(例如'findByName(String name)')时，它不会缓存.

When query my custom method like 'findByName(String name)' it's not cache.

但是当查询默认方法(例如'findOne(Interger id)')时，它就起作用了.

But when query default method like 'findOne(Interger id)' it's work.

application.properties:

spring.jpa.properties.hibernate.cache.use_query_cache=true

存储库:

@Repository
public interface AuthorRepository extends CrudRepository<Author, Integer> {
    Author findByName(String name);
}

测试:

public class RepositoryTests {
    @Autowired
    private AuthorRepository authorRepository;

    @Test
    @Transactional
    public void test() {
        authorRepository.save(new Author("admin"));

        // ***Not work. query **5** times.
        Author author = authorRepository.findByName("admin");
        author = authorRepository.findByName("admin");
        author = authorRepository.findByName("admin");
        author = authorRepository.findByName("admin");
        author = authorRepository.findByName("admin");

        // ***It's work. query **1** times.
        Author author = authorRepository.findOne(1);
        author = authorRepository.findOne(1);
        author = authorRepository.findOne(1);
        author = authorRepository.findOne(1);
        author = authorRepository.findOne(1);
    }
}

推荐答案

@Repository
public interface AuthorRepository extends CrudRepository<Author, Integer> {
    @QueryHints({ @QueryHint(name = "org.hibernate.cacheable", value ="true") })
    Author findByName(String name);
}

应该做到这一点.(注意:因为您已经扩展了CrudRepository，所以不需要 @Repository )

Should do the trick. (Note: the @Repository is not needed because you already extend CrudRepository)

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