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Spring Boot：Data Rest Service

在文章 RESTful by Spring Boot with MySQL 通过在Controller中引入BookRepository来对外提供REST API。Spring Boot还可以通过 spring-boot-starter-data-rest 来对外提供REST API，可以免于编写对应的Controller，且具备分页和排序的功能。

实践

在pom文件中添加依赖项

<dependency>
     <groupId>org.springframework.boot</groupId>      
     <artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>

在包com.test.bookpub.repository下创建AuthorRepository接口，该接口继承自PagingAndSortingRepository，并用@RepositoryRestResource注解修饰。代码如下：

package com.test.bookpub.repository;

import com.test.bookpub.domain.Author;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;

@RepositoryRestResource
public interface AuthorRepository
 extends PagingAndSortingRepository<Author, Long> {
}

可以看出，实际编写的代码很少，同样套路，为Publisher和Reviewer也添加类似的接口。

PublisherRepository的代码如下：

package com.test.bookpub.repository;

import com.test.bookpub.domain.Publisher;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;

@RepositoryRestResourcepublic
interface PublisherRepository
    extends PagingAndSortingRepository<Publisher, Long> {
}

ReviewerRepository的代码如下：

package com.test.bookpub.repository;
import org.springframework.data.repository.PagingAndSortingRepository;
import com.test.bookpub.domain.Publisher.Reviewer;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;

@RepositoryRestResourcepublic interface ReviewerRepoistory
    extends PagingAndSortingRepository<Reviewer, Long> {
}