标签：继承 nta exception 获取 names config turn ade one
在容器中读取Bean的信息，如遇到对扫包做
public class MainClass { public static void main(String[] args) { AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(MainConfig.class); String[] beanDefinationNames = ctx.getBeanDefinitionNames(); for (String name:beanDefinationNames) { System.out.println("bean的定义信息:"+name); } } }
在配置类上通过@CompentScan注解来进行包扫描
@Configuration @ComponentScan(basePackages = {"com.test.testcompentscan"}) public class MainConfig { }
1、排除用法 excludeFilters(排除@Controller注解的,和testService的)
@ComponentScan(basePackages = {"com.tuling.testcompentscan"},excludeFilters = {
@ComponentScan.Filter(type = FilterType.ANNOTATION,value = {Controller.class}),
@ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE,value = {TulingService.class})
})
2、包含用法includeFilters，需要注意若使用包含用法，需要把useDefaultFilters属性设置为false，默认true代表扫全部。排除掉包含Controller、Service
@Configuration
@ComponentScan(basePackages = {"com.tuling.testcompentscan"},includeFilters = {
@ComponentScan.Filter(type = FilterType.ANNOTATION,value = {Controller.class, Service.class})
},useDefaultFilters = false)
public class MainConfig {
}
3、自定义过滤类型
@ComponentScan(basePackages = {"com.tuling.testcompentscan"},includeFilters = {
@ComponentScan.Filter(type = FilterType.CUSTOM,value = TestFilterType.class)
},useDefaultFilters = false)
public class TestFilterType implements TypeFilter { @Override public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) throws IOException { //获取当前类的注解源信息 AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata(); //获取当前类的class的源信息 ClassMetadata classMetadata = metadataReader.getClassMetadata(); //获取当前类的资源信息 Resource resource = metadataReader.getResource(); System.out.println("类的路径:"+classMetadata.getClassName()); if(classMetadata.getClassName().contains("dao")) { return true; } return false; } }
组合使用，根据自定义类型排除bean，同时使用包含排除掉Repository的bean
@ComponentScan(basePackages = {"com.test.testcompentscan"},excludeFilters = {
@ComponentScan.Filter(type = FilterType.CUSTOM,value = TestFilterType.class)
},includeFilters = {
@ComponentScan.Filter(type = FilterType.ANNOTATION,value = Repository.class)
})
@ComponentScan.Filter注解的 tyoe类型
FilterType.ANNOTATION 表示 @Controller @Service @Repository @Compent
FilterType.ASSIGNABLE_TYPE 指定类型
FilterType.CUSTOM 自定义类型 @ComponentScan.Filter(type =FilterType.ASSIGNABLE_TYPE,value = {TestService.class}) /*TestService 继承 TypeFilter 自定义过滤*/
标签：继承 nta exception 获取 names config turn ade one
原文地址：https://www.cnblogs.com/li-lun/p/12780485.html
