过滤@ComponentScan中的特定包

Lan*_*dei 35 spring annotations

我想在Spring中从基于XML的配置切换到基于Java的配置.现在我们在应用程序上下文中有这样的东西:

<context:component-scan base-package="foo.bar">
    <context:exclude-filter type="annotation" expression="o.s.s.Service"/>
</context:component-scan>
<context:component-scan base-package="foo.baz" />
Run Code Online (Sandbox Code Playgroud)

但如果我写这样的东西......

 @ComponentScan(
    basePackages = {"foo.bar", "foo.baz"},
    excludeFilters = @ComponentScan.Filter(
       value= Service.class, 
       type = FilterType.ANNOTATION
    )
 )
Run Code Online (Sandbox Code Playgroud)

...它将从两个包中排除服务.我有强烈的感觉,我忽略了一些令人尴尬的琐碎,但我找不到一个解决方案来限制过滤器的范围foo.bar.

DB5*_*DB5 40

您只需要为您需要Config的两个@ComponentScan注释创建两个类.

例如Config,您的foo.bar包将有一个类:

@Configuration
@ComponentScan(basePackages = {"foo.bar"}, 
    excludeFilters = @ComponentScan.Filter(value = Service.class, type = FilterType.ANNOTATION)
)
public class FooBarConfig {
}
Run Code Online (Sandbox Code Playgroud)

然后是Config你的foo.baz包裹的第二堂课:

@Configuration
@ComponentScan(basePackages = {"foo.baz"})
public class FooBazConfig {
}
Run Code Online (Sandbox Code Playgroud)

然后在实例化Spring上下文时,您将执行以下操作:

new AnnotationConfigApplicationContext(FooBarConfig.class, FooBazConfig.class);
Run Code Online (Sandbox Code Playgroud)

另一种方法是您可以@org.springframework.context.annotation.Import在第一个Config类上使用注释来导入第二个Config类.例如,你可以改为FooBarConfig:

@Configuration
@ComponentScan(basePackages = {"foo.bar"}, 
    excludeFilters = @ComponentScan.Filter(value = Service.class, type = FilterType.ANNOTATION)
)
@Import(FooBazConfig.class)
public class FooBarConfig {
}
Run Code Online (Sandbox Code Playgroud)

然后,您只需使用以下命令启动上下文:

new AnnotationConfigApplicationContext(FooBarConfig.class)
Run Code Online (Sandbox Code Playgroud)