Spring Boot scanBasePackages无法从依赖项中找到bean

Question

@SpringBootApplication(scanBasePackages = {"com.my.package","com.my.package.mylibrary"})
@EnableAsync
@EnableSwagger2
@ServletComponentScan
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class, DataSourceTransactionManagerAutoConfiguration.class,
        HibernateJpaAutoConfiguration.class})
public class MySpringBootApplication {....}

因此，我为ScanBasePackages放置了这两个文件。但是Spring不能从库里找到豆子吗？

编辑：

从图书馆，我有：

package com.my.package.mylibrary.repository;
....
public interface MyRepository extends JpaRepository<..., ....> {....}

package com.my.package.controller;
....
@RestController
public class MyController {....}

Exception in thread "main" java.lang.NoClassDefFoundError: com/my/package/mylibrary/repository/MyRepository
    at com.my.package.MySpringBootApplication.main(MySpringBootApplication.java:32)
Caused by: java.lang.ClassNotFoundException: com.my.package.mylibrary.repository.MyRepository
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)

"java.lang.TypeNotPresentException: Type com.my.package.mylibrary.domain.MyEntity not present

所以我为“com.my.package.mylibrary.domain”添加了@EntityScan，但这会使应用程序无限期地卡死。

Answer 1

首先，您不需要在@SpringBootApplication中添加ScanBasePackages属性，因为基本包是com.my.package。

如果package完全不同，那么您可以添加它。

如果基本包相同,Spring Boot将自动拾取bean。

将MySpringBootApplication类更新为：

@SpringBootApplication
@ServletComponentScan
public class MySpringBootApplication {....}

为异步方法执行创建单独的配置。

 @Configuration
 @EnableAsync
 public class AsynchronousConfig {.....}

为Swagger2创建一个单独的配置类。

@Configuration
@EnableSwagger2
public class SwaggerConfiguration {....}

@Configuration
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class, 
DataSourceTransactionManagerAutoConfiguration.class,
HibernateJpaAutoConfiguration.class})
public class ExcludeConfigurationFile {....}