java - Spring Boot 从另一个模块 Autowiring

Question

我正在尝试在我的项目中的 3 个模块之间建立连接。当我尝试使用@Autowired 到达我的对象时，出现错误。我将稍微解释一下我的情况。

模块

所有这些模块都已在 pom.xml 中连接。让我们谈谈我的问题。

C -> ROUTE.JAVA

.
.
.
@Autowired
public CommuniticationRepository;

@Autowired
public Core core;
.
.
.

B -> 核心

public class Core {
    private int id;
    private String name;
    private Date date;

    public Core(int id, String name, Date date) {
        this.id = id;
        this.name = name;
        this.date = date;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Date getDate() {
        return date;
    }

    public void setDate(Date date) {
        this.date = date;
    }
}

错误

Field communicationRepositoryin com.demo.xyz.A.RestControllers.Route required a bean of type 'com.demo.xyz.A.CommunicationRepository' that could not be found.

Action:

Consider defining a bean of type 'com.demo.xyz.A.CommunicationRepository' in your configuration.

A->REPOSITORY.JAVA

@Component
@Repository
public interface CommunicationRepository extends CrudRepository<Communication, Date> {

    List<Communication> findByDate(Date date);

    void countByDate(Date date);
}

Answer 1

如果 CommunicationRepository 是 spring 数据 JPA 存储库，您应该从中删除 @Component 和 @Repository。

您应该在模块A 和B 中定义配置。

@Configuration
@EnableJpaRepositories(basePackages ={"com.demo.xyz.A"})
@EntityScan(basePackages = {"com.demo.xyz.A"})
@ComponentScan(basePackages = {"com.demo.xyz.A"})
public class ConfigA {

}

// If you have no spring managed beans in B this is not needed
// If Core should be a spring managed bean, add @Component on top of it
@Configuration
@ComponentScan(basePackages = {"com.demo.xyz.B"})
public class ConfigB {

}

然后，在 C 中引导应用程序的地方，您应该导入模块 A 和模块 B 的配置。此时，A 和 B 中的任何 bean 都可用于 C 中的 Autowiring .

@Configuration
@Import(value = {ConfigA.class, ConfigB.class})
public class ConfigC {

}