Java 弹簧靴筒'；多模块t扫描站

我使用spring boot，并通过多个模块进行设计。以下是我的项目结构：

模块车间核心： 包名称：com.baotrung.core.business 我设计了一些子包：模型、存储库、服务

Maven:

<modelVersion>4.0.0</modelVersion>

    <artifactId>shop-core</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <!-- shop-core-model !-->
        <dependency>
            <groupId>com.baotrung</groupId>
            <artifactId>shop-core-model</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.9</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>


    </dependencies>

但当我启动Application.class时，它会抛出异常

Field categoryRepository in com.baotrung.core.business.services.CategoryServiceImpl required a bean of type 'com.baotrung.core.business.repositories.CategoriesRepository' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type 'com.baotrung.core.business.repositories.CategoriesRepository' in your configuration.

---

我不明白为什么，因为我在分类存储库中添加了一个名为“@存储库”的选项，如上面模块com.baotrung.core.business.repositories.CategoriesRepository中所述。为什么spring无法从com.baotrung.core.business.repositories中找到我bean，因为它是一个真正的定义。请帮帮我

通过添加

@EnableJpaRepositories

和

@EntityScan

对此进行更新：

@SpringBootApplication
@EntityScan(basePackages = {"com.baotrung.*"})
@EnableJpaRepositories(basePackages = {"com.baotrung.*"})
public class Application extends SpringBootServletInitializer {

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

---

我建议您清理/重组您的包层次结构以使其正常工作。 它应该可以在没有任何附加注释的情况下工作，请检查我为给定示例创建测试的github：

如果将应用程序类放在应用程序的根包中，例如

com.baotrung.shop

，则组件扫描将从此包开始向下。所有其他组件都应该驻留在这个或子包中，这样做会更容易，并且您需要的样板代码也会更少。

---

将应用程序类放在并行包（及以下）中到其他组件（如您所做的）将强制您设置组件扫描的路径，以查找这些（以及未来）未按预期工作的组件。

问题类似，您检查了吗？让我检查一下。非常感谢从公共接口类别中删除CategoryRepositoryCustom Repository扩展了CrudeRepository，CategoryRepositoryCustom并检查它是否可以不，这对我没有帮助。谢谢你。当我在Application.class中添加：@enableJParepositions（basePackages=“com.baotrung.*）时，它会引发异常：java.lang.IllegalArgumentException:不是托管类型：class com.baotrung.core.model.catalog.category.category，然后我添加@EntityScan（“com.baotrung.*），它会工作。谢谢

public interface CategoriesRepository extends CrudRepository<Category, Long>, CategoryRepositoryCustom {

 }

public interface CategoryRepositoryCustom {

    List<Object> countProductsByCategories(MerchantStore store, List<Long> categoryIds);

    List<Category> listByStoreAndParent(MerchantStore store, Category category);


    }

@Repository
public class CategoryRepositoryCustomImpl implements CategoryRepositoryCustom {

// some method impl
}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-shopping-project</artifactId>
        <groupId>com.baotrung</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>shopping-app</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.baotrung</groupId>
            <artifactId>shop-core-model</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.baotrung</groupId>
            <artifactId>shop-core</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>0.9.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

@SpringBootApplication(scanBasePackages = {"com.baotrung.core.business","com.baotrung.*"})
public class Application extends SpringBootServletInitializer {

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

Field categoryRepository in com.baotrung.core.business.services.CategoryServiceImpl required a bean of type 'com.baotrung.core.business.repositories.CategoriesRepository' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type 'com.baotrung.core.business.repositories.CategoriesRepository' in your configuration.

@SpringBootApplication
@EntityScan(basePackages = {"com.baotrung.*"})
@EnableJpaRepositories(basePackages = {"com.baotrung.*"})
public class Application extends SpringBootServletInitializer {

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