org.springframework.core.type.StandardAnnotationMetadata Java Examples

public static void main(String[] args) throws IOException {

        // 读取 @TransactionService AnnotationMetadata 信息
        AnnotationMetadata annotationMetadata = new StandardAnnotationMetadata(TransactionalServiceStandardAnnotationMetadataBootstrap.class);

        // 获取所有的元注解类型（全类名）集合
        Set<String> metaAnnotationTypes = annotationMetadata.getAnnotationTypes()
                .stream() // TO Stream
                .map(annotationMetadata::getMetaAnnotationTypes) // 读取单注解的元注解类型集合
                .collect(LinkedHashSet::new, Set::addAll, Set::addAll); // 合并元注解类型（全类名）集合

        metaAnnotationTypes.forEach(metaAnnotation -> { // 读取所有元注解类型
            // 读取元注解属性信息
            Map<String, Object> annotationAttributes = annotationMetadata.getAnnotationAttributes(metaAnnotation);
            if (!CollectionUtils.isEmpty(annotationAttributes)) {
                annotationAttributes.forEach((name, value) ->
                        System.out.printf("注解 @%s 属性 %s = %s\n", ClassUtils.getShortName(metaAnnotation), name, value));
            }
        });
    }
 

@Test
public void testNoScopedClass() {
	GenericApplicationContext acx = new GenericApplicationContext();
	AnnotationConfigUtils.registerAnnotationConfigProcessors(acx);

	acx.registerBeanDefinition("noScopedClass", new AnnotatedGenericBeanDefinition(
		new StandardAnnotationMetadata(NoScopedClass.class)));
	acx.registerBeanDefinition("scopedBeansConfiguration", new RootBeanDefinition(
		ScopedBeansConfiguration.class));
	acx.addBeanFactoryPostProcessor(JsfScopeAnnotationsAutoConfiguration.jsfScopeAnnotationsConfigurer(acx.getEnvironment()));
	acx.addBeanFactoryPostProcessor(CdiScopeAnnotationsAutoConfiguration.cdiScopeAnnotationsConfigurer(acx.getEnvironment()));
	acx.refresh();

	assertThat(acx.getBeanDefinition("noScopedClass").getScope())
		.isEqualTo("");
	assertThat(acx.getBeanDefinition("noScopedBean").getScope())
		.isEqualTo("");

}
 

@Test
public void testSessionScopedClass() {
	GenericApplicationContext acx = new GenericApplicationContext();
	AnnotationConfigUtils.registerAnnotationConfigProcessors(acx);

	acx.registerBeanDefinition("sessionScopedClass", new AnnotatedGenericBeanDefinition(
		new StandardAnnotationMetadata(SessionScopedClass.class)));
	acx.registerBeanDefinition("scopedBeansConfiguration", new RootBeanDefinition(
		ScopedBeansConfiguration.class));
	acx.addBeanFactoryPostProcessor(JsfScopeAnnotationsAutoConfiguration.jsfScopeAnnotationsConfigurer(acx.getEnvironment()));
	acx.addBeanFactoryPostProcessor(CdiScopeAnnotationsAutoConfiguration.cdiScopeAnnotationsConfigurer(acx.getEnvironment()));
	acx.refresh();

	assertThat(acx.getBeanDefinition("sessionScopedClass").getScope())
		.isEqualTo(WebApplicationContext.SCOPE_SESSION);
	assertThat(acx.getBeanDefinition("sessionScopedBean").getScope())
		.isEqualTo(WebApplicationContext.SCOPE_SESSION);
}
 

@Test
public void testViewScopedClass() {
	GenericApplicationContext acx = new GenericApplicationContext();
	AnnotationConfigUtils.registerAnnotationConfigProcessors(acx);

	acx.registerBeanDefinition("viewScopedClass", new AnnotatedGenericBeanDefinition(
		new StandardAnnotationMetadata(ViewScopedClass.class)));
	acx.registerBeanDefinition("scopedBeansConfiguration", new RootBeanDefinition(
		ScopedBeansConfiguration.class));
	acx.addBeanFactoryPostProcessor(JsfScopeAnnotationsAutoConfiguration.jsfScopeAnnotationsConfigurer(acx.getEnvironment()));
	acx.addBeanFactoryPostProcessor(CdiScopeAnnotationsAutoConfiguration.cdiScopeAnnotationsConfigurer(acx.getEnvironment()));
	acx.refresh();

	assertThat(acx.getBeanDefinition("viewScopedClass").getScope())
		.isEqualTo(ViewScope.SCOPE_VIEW);
	assertThat(acx.getBeanDefinition("viewScopedBean").getScope())
		.isEqualTo(ViewScope.SCOPE_VIEW);
}
 

@SuppressWarnings("unused")
@Override
protected AbstractFunctionExecutionConfigurationSource newAnnotationBasedFunctionExecutionConfigurationSource(
		AnnotationMetadata annotationMetadata) {

	StandardAnnotationMetadata metadata =
		new StandardAnnotationMetadata(getConfiguration(), true);

	return new AnnotationFunctionExecutionConfigurationSource(metadata) {

		@Override
		public Iterable<String> getBasePackages() {
			return AutoConfigurationPackages.get(getBeanFactory());
		}
	};
}
 

/**
 * Retrieve the metadata for all <code>@Bean</code> methods.
 */
private Set<MethodMetadata> retrieveBeanMethodMetadata(SourceClass sourceClass) {
	AnnotationMetadata original = sourceClass.getMetadata();
	Set<MethodMetadata> beanMethods = original.getAnnotatedMethods(Bean.class.getName());
	if (beanMethods.size() > 1 && original instanceof StandardAnnotationMetadata) {
		// Try reading the class file via ASM for deterministic declaration order...
		// Unfortunately, the JVM's standard reflection returns methods in arbitrary
		// order, even between different runs of the same application on the same JVM.
		try {
			AnnotationMetadata asm =
					this.metadataReaderFactory.getMetadataReader(original.getClassName()).getAnnotationMetadata();
			Set<MethodMetadata> asmMethods = asm.getAnnotatedMethods(Bean.class.getName());
			if (asmMethods.size() >= beanMethods.size()) {
				Set<MethodMetadata> selectedMethods = new LinkedHashSet<MethodMetadata>(asmMethods.size());
				for (MethodMetadata asmMethod : asmMethods) {
					for (MethodMetadata beanMethod : beanMethods) {
						if (beanMethod.getMethodName().equals(asmMethod.getMethodName())) {
							selectedMethods.add(beanMethod);
							break;
						}
					}
				}
				if (selectedMethods.size() == beanMethods.size()) {
					// All reflection-detected methods found in ASM method set -> proceed
					beanMethods = selectedMethods;
				}
			}
		}
		catch (IOException ex) {
			logger.debug("Failed to read class file via ASM for determining @Bean method order", ex);
			// No worries, let's continue with the reflection metadata we started with...
		}
	}
	return beanMethods;
}
 

private boolean isConfigurationType(Class<?> configurationType) {
    if (configurationModelProvider != null) {
        return configurationModelProvider.isConfigurationType(configurationType);
    } else {
        // fallback to the simplified logic
        StandardAnnotationMetadata metadata = new StandardAnnotationMetadata(configurationType);
        return metadata.isAbstract() && metadata.isIndependent() &&
                configurationAnnotations.stream().anyMatch(a -> findAnnotation(configurationType, a) != null);
    }
}
 

/**
 * Factory method to obtain a {@link SourceClass} from a {@link ConfigurationClass}.
 */
private SourceClass asSourceClass(ConfigurationClass configurationClass) throws IOException {
	AnnotationMetadata metadata = configurationClass.getMetadata();
	if (metadata instanceof StandardAnnotationMetadata) {
		return asSourceClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
	}
	return asSourceClass(metadata.getClassName());
}
 

public SourceClass(Object source) {
	this.source = source;
	if (source instanceof Class) {
		this.metadata = new StandardAnnotationMetadata((Class<?>) source, true);
	}
	else {
		this.metadata = ((MetadataReader) source).getAnnotationMetadata();
	}
}
 

/**
 * Create a new {@link ConfigurationClass} with the given name.
 * @param clazz the underlying {@link Class} to represent
 * @param beanName name of the {@code @Configuration} class bean
 * @see ConfigurationClass#ConfigurationClass(Class, ConfigurationClass)
 */
public ConfigurationClass(Class<?> clazz, String beanName) {
	Assert.hasText(beanName, "Bean name must not be null");
	this.metadata = new StandardAnnotationMetadata(clazz, true);
	this.resource = new DescriptiveResource(clazz.getName());
	this.beanName = beanName;
}
 

/**
 * Create a new AnnotatedGenericBeanDefinition for the given annotation metadata,
 * allowing for ASM-based processing and avoidance of early loading of the bean class.
 * Note that this constructor is functionally equivalent to
 * {@link org.springframework.context.annotation.ScannedGenericBeanDefinition
 * ScannedGenericBeanDefinition}, however the semantics of the latter indicate that a
 * bean was discovered specifically via component-scanning as opposed to other means.
 * @param metadata the annotation metadata for the bean class in question
 * @since 3.1.1
 */
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata) {
	Assert.notNull(metadata, "AnnotationMetadata must not be null");
	if (metadata instanceof StandardAnnotationMetadata) {
		setBeanClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
	}
	else {
		setBeanClassName(metadata.getClassName());
	}
	this.metadata = metadata;
}
 

/**
 * Create a new AnnotatedGenericBeanDefinition for the given annotation metadata,
 * allowing for ASM-based processing and avoidance of early loading of the bean class.
 * Note that this constructor is functionally equivalent to
 * {@link org.springframework.context.annotation.ScannedGenericBeanDefinition
 * ScannedGenericBeanDefinition}, however the semantics of the latter indicate that a
 * bean was discovered specifically via component-scanning as opposed to other means.
 * @param metadata the annotation metadata for the bean class in question
 * @since 3.1.1
 */
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata) {
	Assert.notNull(metadata, "AnnotationMetadata must not be null");
	if (metadata instanceof StandardAnnotationMetadata) {
		setBeanClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
	}
	else {
		setBeanClassName(metadata.getClassName());
	}
	this.metadata = metadata;
}
 

/**
 * Factory method to obtain a {@link SourceClass} from a {@link ConfigurationClass}.
 */
public SourceClass asSourceClass(ConfigurationClass configurationClass) throws IOException {
	AnnotationMetadata metadata = configurationClass.getMetadata();
	if (metadata instanceof StandardAnnotationMetadata) {
		return asSourceClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
	}
	return asSourceClass(configurationClass.getMetadata().getClassName());
}
 

public SourceClass(Object source) {
	this.source = source;
	if (source instanceof Class<?>) {
		this.metadata = new StandardAnnotationMetadata((Class<?>) source, true);
	}
	else {
		this.metadata = ((MetadataReader) source).getAnnotationMetadata();
	}
}
 

/**
 * Create a new {@link ConfigurationClass} with the given name.
 * @param clazz the underlying {@link Class} to represent
 * @param beanName name of the {@code @Configuration} class bean
 * @see ConfigurationClass#ConfigurationClass(Class, ConfigurationClass)
 */
public ConfigurationClass(Class<?> clazz, String beanName) {
	Assert.hasText(beanName, "Bean name must not be null");
	this.metadata = new StandardAnnotationMetadata(clazz, true);
	this.resource = new DescriptiveResource(clazz.toString());
	this.beanName = beanName;
}
 

/**
 * Create a new AnnotatedGenericBeanDefinition for the given annotation metadata,
 * allowing for ASM-based processing and avoidance of early loading of the bean class.
 * Note that this constructor is functionally equivalent to
 * {@link org.springframework.context.annotation.ScannedGenericBeanDefinition
 * ScannedGenericBeanDefinition}, however the semantics of the latter indicate that a
 * bean was discovered specifically via component-scanning as opposed to other means.
 * @param metadata the annotation metadata for the bean class in question
 * @since 3.1.1
 */
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata) {
	Assert.notNull(metadata, "AnnotationMetadata must not be null");
	if (metadata instanceof StandardAnnotationMetadata) {
		setBeanClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
	}
	else {
		setBeanClassName(metadata.getClassName());
	}
	this.metadata = metadata;
}
 

@Test
public void metadataFromImportsOneThenTwo() {
	AnnotationMetadata importMetadata = new AnnotationConfigApplicationContext(
			ConfigurationOne.class, ConfigurationTwo.class)
			.getBean(MetadataHolder.class).importMetadata;
	assertEquals(ConfigurationOne.class,
			((StandardAnnotationMetadata) importMetadata).getIntrospectedClass());
}
 

@Test
public void metadataFromImportsTwoThenOne() {
	AnnotationMetadata importMetadata = new AnnotationConfigApplicationContext(
			ConfigurationTwo.class, ConfigurationOne.class)
			.getBean(MetadataHolder.class).importMetadata;
	assertEquals(ConfigurationOne.class,
			((StandardAnnotationMetadata) importMetadata).getIntrospectedClass());
}
 

public static boolean matches(ConditionContext context) {
	Class<AuthorizationServerEndpointsConfigurationBeanCondition> type = AuthorizationServerEndpointsConfigurationBeanCondition.class;
	Conditional conditional = AnnotationUtils.findAnnotation(type, Conditional.class);
	StandardAnnotationMetadata metadata = new StandardAnnotationMetadata(type);
	for (Class<? extends Condition> conditionType : conditional.value()) {
		Condition condition = BeanUtils.instantiateClass(conditionType);
		if (condition.matches(context, metadata)) {
			return true;
		}
	}
	return false;
}
 

@Override
protected void registerContentStoreBeanDefinitions(
		AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {

	AnnotationMetadata metadata = new StandardAnnotationMetadata(
			EnableMongoContentAutoConfiguration.class);
	AnnotationAttributes attributes = new AnnotationAttributes(
			metadata.getAnnotationAttributes(this.getAnnotation().getName()));

	String[] basePackages = this.getBasePackages();

	Set<GenericBeanDefinition> definitions = StoreUtils.getStoreCandidates(this.getEnvironment(), this.getResourceLoader(), basePackages, multipleStoreImplementationsDetected(), getIdentifyingTypes());

	this.buildAndRegisterDefinitions(importingClassMetadata, registry, attributes, basePackages, definitions);
}
 

/**
 * Create a new AnnotatedGenericBeanDefinition for the given annotation metadata,
 * allowing for ASM-based processing and avoidance of early loading of the bean class.
 * Note that this constructor is functionally equivalent to
 * {@link org.springframework.context.annotation.ScannedGenericBeanDefinition
 * ScannedGenericBeanDefinition}, however the semantics of the latter indicate that a
 * bean was discovered specifically via component-scanning as opposed to other means.
 * @param metadata the annotation metadata for the bean class in question
 * @since 3.1.1
 */
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata) {
	Assert.notNull(metadata, "AnnotationMetadata must not be null");
	if (metadata instanceof StandardAnnotationMetadata) {
		setBeanClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
	}
	else {
		setBeanClassName(metadata.getClassName());
	}
	this.metadata = metadata;
}
 

@Override
protected void registerContentStoreBeanDefinitions(
		AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {

	AnnotationMetadata metadata = new StandardAnnotationMetadata(
			EnableJpaContentAutoConfiguration.class);
	AnnotationAttributes attributes = new AnnotationAttributes(
			metadata.getAnnotationAttributes(this.getAnnotation().getName()));

	String[] basePackages = this.getBasePackages();

	Set<GenericBeanDefinition> definitions = StoreUtils.getStoreCandidates(this.getEnvironment(), this.getResourceLoader(), basePackages, multipleStoreImplementationsDetected(), getIdentifyingTypes());

	this.buildAndRegisterDefinitions(importingClassMetadata, registry, attributes, basePackages, definitions);
}
 

@Test
public void metadataFromImportsTwoThenOne() {
	AnnotationMetadata importMetadata = new AnnotationConfigApplicationContext(
			ConfigurationTwo.class, ConfigurationOne.class)
			.getBean(MetadataHolder.class).importMetadata;
	assertEquals(ConfigurationOne.class,
			((StandardAnnotationMetadata) importMetadata).getIntrospectedClass());
}
 

@Test
public void metadataFromImportsOneThenTwo() {
	AnnotationMetadata importMetadata = new AnnotationConfigApplicationContext(
			ConfigurationOne.class, ConfigurationTwo.class)
			.getBean(MetadataHolder.class).importMetadata;
	assertEquals(ConfigurationOne.class,
			((StandardAnnotationMetadata) importMetadata).getIntrospectedClass());
}
 

/**
 * Retrieve the metadata for all <code>@Bean</code> methods.
 */
private Set<MethodMetadata> retrieveBeanMethodMetadata(SourceClass sourceClass) {
	AnnotationMetadata original = sourceClass.getMetadata();
	Set<MethodMetadata> beanMethods = original.getAnnotatedMethods(Bean.class.getName());
	if (beanMethods.size() > 1 && original instanceof StandardAnnotationMetadata) {
		// Try reading the class file via ASM for deterministic declaration order...
		// Unfortunately, the JVM's standard reflection returns methods in arbitrary
		// order, even between different runs of the same application on the same JVM.
		try {
			AnnotationMetadata asm =
					this.metadataReaderFactory.getMetadataReader(original.getClassName()).getAnnotationMetadata();
			Set<MethodMetadata> asmMethods = asm.getAnnotatedMethods(Bean.class.getName());
			if (asmMethods.size() >= beanMethods.size()) {
				Set<MethodMetadata> selectedMethods = new LinkedHashSet<>(asmMethods.size());
				for (MethodMetadata asmMethod : asmMethods) {
					for (MethodMetadata beanMethod : beanMethods) {
						if (beanMethod.getMethodName().equals(asmMethod.getMethodName())) {
							selectedMethods.add(beanMethod);
							break;
						}
					}
				}
				if (selectedMethods.size() == beanMethods.size()) {
					// All reflection-detected methods found in ASM method set -> proceed
					beanMethods = selectedMethods;
				}
			}
		}
		catch (IOException ex) {
			logger.debug("Failed to read class file via ASM for determining @Bean method order", ex);
			// No worries, let's continue with the reflection metadata we started with...
		}
	}
	return beanMethods;
}
 

/**
 * Create a new {@link ConfigurationClass} with the given name.
 * @param clazz the underlying {@link Class} to represent
 * @param beanName name of the {@code @Configuration} class bean
 * @see ConfigurationClass#ConfigurationClass(Class, ConfigurationClass)
 */
public ConfigurationClass(Class<?> clazz, String beanName) {
	Assert.notNull(beanName, "Bean name must not be null");
	this.metadata = new StandardAnnotationMetadata(clazz, true);
	this.resource = new DescriptiveResource(clazz.getName());
	this.beanName = beanName;
}
 

public SourceClass(Object source) {
	this.source = source;
	if (source instanceof Class) {
		this.metadata = new StandardAnnotationMetadata((Class<?>) source, true);
	}
	else {
		this.metadata = ((MetadataReader) source).getAnnotationMetadata();
	}
}
 

/**
 * Factory method to obtain a {@link SourceClass} from a {@link ConfigurationClass}.
 */
private SourceClass asSourceClass(ConfigurationClass configurationClass) throws IOException {
	AnnotationMetadata metadata = configurationClass.getMetadata();
	if (metadata instanceof StandardAnnotationMetadata) {
		return asSourceClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
	}
	return asSourceClass(metadata.getClassName());
}
 

/**
 * Retrieve the metadata for all <code>@Bean</code> methods.
 */
private Set<MethodMetadata> retrieveBeanMethodMetadata(SourceClass sourceClass) {
	AnnotationMetadata original = sourceClass.getMetadata();
	Set<MethodMetadata> beanMethods = original.getAnnotatedMethods(Bean.class.getName());
	if (beanMethods.size() > 1 && original instanceof StandardAnnotationMetadata) {
		// Try reading the class file via ASM for deterministic declaration order...
		// Unfortunately, the JVM's standard reflection returns methods in arbitrary
		// order, even between different runs of the same application on the same JVM.
		try {
			AnnotationMetadata asm =
					this.metadataReaderFactory.getMetadataReader(original.getClassName()).getAnnotationMetadata();
			Set<MethodMetadata> asmMethods = asm.getAnnotatedMethods(Bean.class.getName());
			if (asmMethods.size() >= beanMethods.size()) {
				Set<MethodMetadata> selectedMethods = new LinkedHashSet<>(asmMethods.size());
				for (MethodMetadata asmMethod : asmMethods) {
					for (MethodMetadata beanMethod : beanMethods) {
						if (beanMethod.getMethodName().equals(asmMethod.getMethodName())) {
							selectedMethods.add(beanMethod);
							break;
						}
					}
				}
				if (selectedMethods.size() == beanMethods.size()) {
					// All reflection-detected methods found in ASM method set -> proceed
					beanMethods = selectedMethods;
				}
			}
		}
		catch (IOException ex) {
			logger.debug("Failed to read class file via ASM for determining @Bean method order", ex);
			// No worries, let's continue with the reflection metadata we started with...
		}
	}
	return beanMethods;
}
 

/**
 * Create a new AnnotatedGenericBeanDefinition for the given annotation metadata,
 * allowing for ASM-based processing and avoidance of early loading of the bean class.
 * Note that this constructor is functionally equivalent to
 * {@link org.springframework.context.annotation.ScannedGenericBeanDefinition
 * ScannedGenericBeanDefinition}, however the semantics of the latter indicate that a
 * bean was discovered specifically via component-scanning as opposed to other means.
 * @param metadata the annotation metadata for the bean class in question
 * @since 3.1.1
 */
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata) {
	Assert.notNull(metadata, "AnnotationMetadata must not be null");
	if (metadata instanceof StandardAnnotationMetadata) {
		setBeanClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
	}
	else {
		setBeanClassName(metadata.getClassName());
	}
	this.metadata = metadata;
}