如何在众多的JAR之间分离我的Spring JPA配置？

Question

应用程序#1将包含带有Hibernate映射的DAO模型、JPA存储库、DTO模型以及将DAO转换为DTO的逻辑。

应用程序#2将包含包含所有业务逻辑的RESTful控制器和服务类。

应用程序#1配置：

// For application startup
package com.appone.pkg.one

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

// For global configuration files across numerous projects
package com.appone.pkg.two

@Configuration
public class GlobalAppConfig {

    @Bean
    MapperFacade mapperFacade() {
        MapperFactory factory = new DefaultMapperFactory.Builder().build();

        factory.classMap(Group.class, GroupDTO.class).byDefault().register();
        factory.classMap(Role.class, RoleDTO.class).byDefault().register();
        factory.classMap(User.class, UserDTO.class).byDefault().register();

        return factory.getMapperFacade();
    }
 }

// For configuration aspects important for 1 project in particular
package com.appone.pkg.three

@Configuration
@EnableJpaRepositories("com.pkg.three.jpa.repository")
public class AppTwoConfig {

    @Autowired
    private EntityManager em;
    private RepositoryFactorySupport factorySupport;

    private void initialize(){
        if(factorySupport == null){
            factorySupport = new JpaRepositoryFactory(em);
        }
    }

    @Bean
    GroupRepository groupRepository(){
        initialize();
        return factorySupport.getRepository(GroupRepository.class);
    }
    @Bean
    RoleRepository roleRepository(){
        initialize();
        return factorySupport.getRepository(RoleRepository.class);
    }
    @Bean
    UserRepository userRepository(){
        initialize();
        return factorySupport.getRepository(UserRepository.class);
    }
    @Bean
    GroupValidator groupValidator(){
        return new GroupValidator();
    }
    @Bean
    UserValidator userValidator(){
        return new UserValidator();
    }
    @Bean
    ResourceMapper resourceMapper(){
        return new ResourceMapper();
    }
}

package com.apptwo.pkg.one;

@SpringBootApplication
@EnableAutoConfiguration
@EntityScan(basePackageClasses = {com.appone.pkg.three.AppTwoConfig.class})
public class ApplicationTwo {
    public static void main(String[] args) {
        SpringApplication.run(ApplicationTwo.class, args);
    }
}

应用程序#2数据加载：

package com.apptwo.pkg.two;

@Component
public class DataLoader implements ApplicationRunner {

    @Autowired
    private GroupRepository groupRepository;
    @Autowired
    private RoleRepository roleRepository;
    @Autowired
    private UserRepository userRepository;
    @Autowired
    private ResourceMapper resourceMapper;

    /**
     * Loads initial data into the h2 database.
     */
    public void run(ApplicationArguments args) {
        // Load the initial data ... 
    }
}

这是我尝试启动应用程序#2时遇到的例外情况。应用程序#1可以自己启动，但我没有使用那里的存储库，如果我尝试的话，我相信它可能会抛出错误。不过，最终我只想要应用程序#2中的逻辑。你对我做错了什么有什么想法吗？

我需要初始化应用程序#1配置中的所有依赖项，然后在运行应用程序#2配置之前从应用程序#2内部运行该配置。

操作：考虑在您的配置中定义一个类型为“com.appone.pkg.three.jpa.repository.GroupRepository”的bean。

Answer 1

多亏了几个人的共同努力，我找到了解决办法。

部分帮助来自这篇文章：在Spring Boot中不能自动连接@Repository注释接口

步骤1：

步骤2：

我像这样更改了AppTwoConfig.java,

// For configuration aspects important for 1 project in particular
package com.appone.pkg.three

@Configuration
@EnableJpaRepositories("com.pkg.three.jpa.repository")
@EntityScan("com.pkg.three.jpa.model")
public class AppTwoConfig {

    @Bean
    GroupValidator groupValidator(){
        return new GroupValidator();
    }
    @Bean
    UserValidator userValidator(){
        return new UserValidator();
    }
    @Bean
    ResourceMapper resourceMapper(){
       return new ResourceMapper();
    }
}

步骤3：

package com.apptwo.pkg.one;

@SpringBootApplication
@EnableAutoConfiguration
@ComponentScan(basePackageClasses = {
        com.apptwo.pkg.one.config.AppConfig.class,
        com.appone.pkg.two.GlobalAppConfig.class,
        com.appone.pkg.three.AppTwoConfig.class
})
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}