问题描述

我正在尝试从 Spring 指南:根据 /#repositories.custom-implementations" rel="nofollow" title="自定义查询实现">参考 4.4 自定义实现.但是我的自定义方法在存储库的 REST 接口 (/user/search) 中不可用.

I am trying to create a custom query from the Spring guide : Accessing MongoDB Data with REST according to the Reference 4.4 Custom Implementations. But my custom method is not available from the repository's REST interface (/user/search).

(例如，浏览器无法找到 localhost:8080/user/search/GetByKidsAge?age=1)

(e.g. Browser is unable to find localhost:8080/user/search/GetByKidsAge?age=1)

有人可以帮我解决这个问题并给我一些建议吗?非常感谢！！

Could someone help me to figured this out and give me some suggestions? Thanks a lot !!

下面是我的代码:

UserRepositoryCustom.java

public interface UserRepositoryCustom {     

    public List<User> GetByKidsAge(@Param("age") int age);
}

UserRepositoryImpl.java

public class UserRepositoryImpl implements UserRepositoryCustom {

    @Override
    public List<User> GetByKidsAge(int age) {

        return /*perform query*/;

    }
}

UserRepository.java

@RepositoryRestResource(collectionResourceRel = "user", path = "user")
public interface UserRepository extends MongoRepository<User, String>, UserRepositoryCustom {

        List<User> findByLastName(@Param("name") String name);  
}

推荐答案

这是设计使然.一旦您开始手动实现存储库方法，我们就无法知道 GET 或 POST 是否是正确的 HTTP 方法，因为执行是否幂等取决于您如何实现它.

This is by design. As soon as you start implementing a repository method manually we cannot know whether GET or POST is the right HTTP method as whether the execution is idempotent depends on how you implement it.

因此，要实现的方法是实现自定义控制器并使用适当的 HTTP 方法公开这些方法.也就是说，我们的跟踪器中有一个 ticket 来提供定义这些方法的方式的方法也暴露了.

So the way to go would be implementing a custom controller and expose those methods using the adequate HTTP method. That said, there's a ticket in our tracker to provide means to define the way these methods should be exposed as well.