Spring Data JPA - 如何以编程方式设置 JpaRepository 基础包 [英] Spring Data JPA - How to programmatically set JpaRepository base packages

问题描述

在 Spring Java Config 类中定义 EntityManager 时，我可以添加基础包以通过调用相应构建器上的方法来扫描实体类:

When defining an EntityManager in a Spring Java Config class, I can add the base packages to scan for Entity classes by calling a method on the corresponding builder:

public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder) {
  // Some other configuration here
  builder.packages("org.foo.bar", "org.foo.baz");
  return builder.build();
}

对于 Spring 寻找存储库接口的地方，我需要类似的东西.通常的方法是使用 @EnableJpaRepositories 注释:

I need something similar for the places where Spring looks for Repository Interfaces. The usual way is using the @EnableJpaRepositories annotation:

@EnableJpaRepositories(basePackages = {"org.foo.barbaz"})

但我想有一种动态的方式来定义这些包，类似于上述实体位置的方式.像这样:

But I would like to have a dynamical way for defining these packages similar to the way above for the Entity locations. Something like this:

public SomeJpaRepositoryFactoryBean entityManagerFactory(JpaRepositoryFactoryBuilder builder) {
  // Some other configuration here
  builder.packages("org.foo.barbaz");
  return builder.build();
}

有没有办法用当前的 Spring Data JPA 版本来做到这一点，难道它根本不打算这样做吗?

Is there a way to do this with the current Spring Data JPA release is it simply not meant to be done this way?

推荐答案

您可以使用 @AutoConfigurationPackage 批注将您的子模块的包添加到扫描包中.

You can use @AutoConfigurationPackage annotation to add your child module's package to scan-packages.

1. 从您的子模块
中删除所有@EnableJpaRepositories

2. 将@AutoConfigurationPackage类添加到子模块的顶层目录(类似于@SpringBootApplication，你必须把这个类到最顶层目录扫描所有子包):

1. Remove all @EnableJpaRepositories from your child module

2. Add @AutoConfigurationPackage class to the top directory of your child module (similar to @SpringBootApplication, you must put this class to the top-most directory to scan all subpackages):

@AutoConfigurationPackage
public class ChildConfiguration {
}

在您的子模块的/resources/META-INF/spring.factories下创建spring.factories文件 并添加配置类:

Create spring.factories file under /resources/META-INF/spring.factories of your child module and add the configuration class:

org.springframework.boot.autoconfigure.EnableAutoConfiguration=com.child.package.ChildConfiguration

现在您可以从核心项目@Autowired您的存储库.(经过测试和工作)

Now you can @Autowired your repository from your core project. (Tested and worked)

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