/**
 * 自定义包扫描过滤规则
 *
 * @param metadataReader 读取到当前正在扫描的类的信息
 * @param metadataReaderFactory 获取其他任何类型
 * @return boolean
 */
@Override
public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) throws IOException {
    // 获取当前正在扫描的类注解的信息
    AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
    // 获取当前正在扫描的类的信息
    ClassMetadata classMetadata = metadataReader.getClassMetadata();
    // 获取类名
    String className = classMetadata.getClassName();
    System.out.println("扫描的类——》" + className);
    // 根据类名进行过滤
    if (className.contains("Book")) {
        return true;
    }
    // 证明filter在Conditional之前拦截
    //Annotation[] annotations = classMetadata.getClass().getAnnotations();
    //for (Annotation annotation : annotations) {
    //    if (annotation.annotationType() == Conditional.class) {
    //        return false;
    //    }
    //}
    //return true;
    return false;
}
 

@Override
public ConditionOutcome getMatchOutcome(ConditionContext context, AnnotatedTypeMetadata metadata) {
	String sourceClass = "";
	if (metadata instanceof ClassMetadata) {
		sourceClass = ((ClassMetadata) metadata).getClassName();
	}
	ConditionMessage.Builder message = ConditionMessage.forCondition("OSS", sourceClass);
	Environment environment = context.getEnvironment();
	try {
		BindResult<OSSType> specified = Binder.get(environment).bind("oss.type", OSSType.class);
		if (!specified.isBound()) {
			return ConditionOutcome.match(message.because("automatic OSS type"));
		}
		OSSType required = OSSConfigurations.getType(((AnnotationMetadata) metadata).getClassName());
		if (specified.get() == required) {
			return ConditionOutcome.match(message.because(specified.get() + " OSS type"));
		}
	}
	catch (BindException ex) {
	}
	return ConditionOutcome.noMatch(message.because("unknown OSS type"));
}
 

private String[] getResources(String packageName) {
    try {
        // 搜索资源
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(SystemPropertyUtils.resolvePlaceholders(packageName)) + "/" + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = resourcePatternResolver.getResources(packageSearchPath);
        // 提取资源
        Set<String> names = new HashSet<String>();
        for (Resource resource : resources) {
            if (!resource.isReadable()) {
                continue;
            }
            // 判断是否静态资源
            MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
            ClassMetadata classMetadata = metadataReader.getClassMetadata();
            names.add(classMetadata.getClassName());
        }
        return names.toArray(new String[0]);
    } catch (IOException exception) {
        String message = "无法获取资源";
        LOGGER.error(message, exception);
        throw new StorageConfigurationException(message, exception);
    }
}
 

private List<Class<?>> findMangoDaoClasses(String packages) {
    try {
        List<Class<?>> daos = new ArrayList<Class<?>>();
        ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();
        MetadataReaderFactory metadataReaderFactory = new CachingMetadataReaderFactory(resourcePatternResolver);
        for (String locationPattern : getLocationPattern(packages)) {
            Resource[] rs = resourcePatternResolver.getResources(locationPattern);
            for (Resource r : rs) {
                MetadataReader reader = metadataReaderFactory.getMetadataReader(r);
                AnnotationMetadata annotationMD = reader.getAnnotationMetadata();
                if (annotationMD.hasAnnotation(DB.class.getName())) {
                    ClassMetadata clazzMD = reader.getClassMetadata();
                    daos.add(Class.forName(clazzMD.getClassName()));
                }
            }
        }
        return daos;
    } catch (Exception e) {
        throw new IllegalStateException(e.getMessage(), e);
    }
}
 

protected List<String> getClasses(Resource[] resources) {
    List<String> classNames = new ArrayList<>();

    for (Resource resource : resources) {
        if (resource.isReadable()) {
            MetadataReader metadataReader;
            try {
                metadataReader = metadataReaderFactory.getMetadataReader(resource);
            } catch (IOException e) {
                throw new RuntimeException("Unable to read metadata resource", e);
            }

            AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
            if (annotationMetadata.isAnnotated(com.haulmont.chile.core.annotations.MetaClass.class.getName())
                    || annotationMetadata.isAnnotated(MappedSuperclass.class.getName())
                    || annotationMetadata.isAnnotated(Entity.class.getName())) {
                ClassMetadata classMetadata = metadataReader.getClassMetadata();
                classNames.add(classMetadata.getClassName());
            }
        }
    }
    return classNames;
}
 

@Override
public ConditionOutcome getMatchOutcome(ConditionContext context,
		AnnotatedTypeMetadata md) {
	String sourceClass = "";
	if (md instanceof ClassMetadata) {
		sourceClass = ((ClassMetadata) md).getClassName();
	}
	ConditionMessage.Builder message = ConditionMessage.forCondition("ZipkinSender",
			sourceClass);
	String property = context.getEnvironment()
			.getProperty("spring.zipkin.sender.type");
	if (StringUtils.isEmpty(property)) {
		return ConditionOutcome.match(message.because("automatic sender type"));
	}
	String senderType = getType(((AnnotationMetadata) md).getClassName());
	if (property.equalsIgnoreCase(senderType)) {
		return ConditionOutcome.match(message.because(property + " sender type"));
	}
	return ConditionOutcome.noMatch(message.because(property + " sender type"));
}
 

private List<Class<?>> findMangoDaoClasses() {
  try {
    List<Class<?>> daos = new ArrayList<Class<?>>();
    ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();
    MetadataReaderFactory metadataReaderFactory = new CachingMetadataReaderFactory(resourcePatternResolver);
    for (String locationPattern : locationPatterns) {
      Resource[] rs = resourcePatternResolver.getResources(locationPattern);
      for (Resource r : rs) {
        MetadataReader reader = metadataReaderFactory.getMetadataReader(r);
        AnnotationMetadata annotationMD = reader.getAnnotationMetadata();
        if (annotationMD.hasAnnotation(DB.class.getName())) {
          ClassMetadata clazzMD = reader.getClassMetadata();
          daos.add(Class.forName(clazzMD.getClassName()));
        }
      }
    }
    return daos;
  } catch (Exception e) {
    throw new IllegalStateException(e.getMessage(), e);
  }
}
 

@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) {
	SimpleMetadataReaderFactory metadataReaderFactory = new SimpleMetadataReaderFactory(applicationContext);
	DefaultListableBeanFactory defaultListableBeanFactory = (DefaultListableBeanFactory) beanFactory;
	String resolvedPath = resolvePackageToScan();
	logger.debug("Scanning '{}' for JSON-RPC service interfaces.", resolvedPath);
	try {
		for (Resource resource : applicationContext.getResources(resolvedPath)) {
			if (resource.isReadable()) {
				MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
				ClassMetadata classMetadata = metadataReader.getClassMetadata();
				AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
				String jsonRpcPathAnnotation = JsonRpcService.class.getName();
				if (annotationMetadata.isAnnotated(jsonRpcPathAnnotation)) {
					String className = classMetadata.getClassName();
					String path = (String) annotationMetadata.getAnnotationAttributes(jsonRpcPathAnnotation).get("value");
					logger.debug("Found JSON-RPC service to proxy [{}] on path '{}'.", className, path);
					registerJsonProxyBean(defaultListableBeanFactory, className, path);
				}
			}
		}
	} catch (IOException e) {
		throw new IllegalStateException(format("Cannot scan package '%s' for classes.", resolvedPath), e);
	}
}
 

@Override
public ClassMetadata getClassMetadataFor(Class<?> clazz) {
	try {
		MetadataReader reader =
			new SimpleMetadataReaderFactory().getMetadataReader(clazz.getName());
		return reader.getAnnotationMetadata();
	}
	catch (IOException ex) {
		throw new IllegalStateException(ex);
	}
}
 

@Override
public ClassMetadata getClassMetadataFor(Class<?> clazz) {
	try {
		MetadataReader reader =
			new SimpleMetadataReaderFactory().getMetadataReader(clazz.getName());
		return reader.getAnnotationMetadata();
	}
	catch (IOException ex) {
		throw new IllegalStateException(ex);
	}
}
 

@Override
public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) {
    ClassMetadata classMetadata = metadataReader.getClassMetadata();
    if (classMetadata.isConcrete() && !classMetadata.isAnnotation()) {
        //找到类
        Class<?> clazz = resolveClassName(classMetadata.getClassName(), classLoader);
        //判断是否Public
        if (Modifier.isPublic(clazz.getModifiers())) {
            Class<?> targetClass = clazz;
            while (targetClass != null && targetClass != Object.class) {
                //处理类上的服务提供者注解
                if (getProviderAnnotation(targetClass) != null) {
                    return true;
                }
                //处理字段的消费者注解
                for (Field field : targetClass.getDeclaredFields()) {
                    if (!Modifier.isFinal(field.getModifiers())
                            && !Modifier.isStatic(field.getModifiers())
                            && getConsumerAnnotation(field) != null) {
                        return true;
                    }
                }
                //处理方法上的消费者注解
                for (Method method : clazz.getDeclaredMethods()) {
                    if (!Modifier.isStatic(method.getModifiers())
                            && Modifier.isPublic(method.getModifiers())
                            && method.getParameterCount() == 1
                            && method.getName().startsWith("set")
                            && getConsumerAnnotation(method) != null) {
                        return true;
                    }
                }
                targetClass = targetClass.getSuperclass();
            }

        }
    }
    return false;
}
 

public ClassMetadata getClassMetadata() {
    if (this.classMetadata == null) {
        ClassMetadataReadingVisitor visitor = new ClassMetadataReadingVisitor();
        this.classReader.accept(visitor, true);
        this.classMetadata = visitor;
    }
    return this.classMetadata;
}
 

private String[] getResources(String packageName) {
    try {
        // 搜索资源
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(SystemPropertyUtils.resolvePlaceholders(packageName)) + "/" + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = resourcePatternResolver.getResources(packageSearchPath);
        // 提取资源
        Set<String> names = new HashSet<String>();
        String name = ResourceConfiguration.class.getName();
        for (Resource resource : resources) {
            if (!resource.isReadable()) {
                continue;
            }
            // 判断是否静态资源
            MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
            AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
            if (!annotationMetadata.hasAnnotation(name)) {
                continue;
            }
            ClassMetadata classMetadata = metadataReader.getClassMetadata();
            names.add(classMetadata.getClassName());
        }
        return names.toArray(new String[0]);
    } catch (IOException exception) {
        String message = "无法获取资源";
        logger.error(message, exception);
        throw new StorageException(message, exception);
    }
}
 

private String[] getResources(String packageName) {
    try {
        // 搜索资源
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(SystemPropertyUtils.resolvePlaceholders(packageName)) + "/" + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = resourcePatternResolver.getResources(packageSearchPath);
        // 提取资源
        Set<String> names = new HashSet<String>();
        String document = Document.class.getName();
        for (Resource resource : resources) {
            if (!resource.isReadable()) {
                continue;
            }
            // 判断是否静态资源
            MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
            AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
            if (!annotationMetadata.hasAnnotation(document)) {
                continue;
            }
            ClassMetadata classMetadata = metadataReader.getClassMetadata();
            names.add(classMetadata.getClassName());
        }
        return names.toArray(new String[0]);
    } catch (IOException exception) {
        String message = "无法获取资源";
        LOGGER.error(message, exception);
        throw new StorageConfigurationException(message, exception);
    }
}
 

private String[] getResources(String packageName) {
    try {
        // 搜索资源
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(SystemPropertyUtils.resolvePlaceholders(packageName)) + "/" + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = resourcePatternResolver.getResources(packageSearchPath);
        // 提取资源
        Set<String> names = new HashSet<String>();
        String entity = Entity.class.getName();
        String persistent = Persistent.class.getName();
        for (Resource resource : resources) {
            if (!resource.isReadable()) {
                continue;
            }
            // 判断是否静态资源
            MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
            AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
            if (!annotationMetadata.hasAnnotation(entity) && !annotationMetadata.hasAnnotation(persistent)) {
                continue;
            }
            ClassMetadata classMetadata = metadataReader.getClassMetadata();
            names.add(classMetadata.getClassName());
        }
        return names.toArray(new String[0]);
    } catch (IOException exception) {
        String message = "无法获取资源";
        LOGGER.error(message, exception);
        throw new StorageConfigurationException(message, exception);
    }
}
 

private String[] getResources(String packageName) {
    try {
        // 搜索资源
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(SystemPropertyUtils.resolvePlaceholders(packageName)) + "/" + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = resourcePatternResolver.getResources(packageSearchPath);
        // 提取资源
        Set<String> names = new HashSet<String>();
        String document = LuceneConfiguration.class.getName();
        for (Resource resource : resources) {
            if (!resource.isReadable()) {
                continue;
            }
            // 判断是否静态资源
            MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
            AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
            if (!annotationMetadata.hasAnnotation(document)) {
                continue;
            }
            ClassMetadata classMetadata = metadataReader.getClassMetadata();
            names.add(classMetadata.getClassName());
        }
        return names.toArray(new String[0]);
    } catch (IOException exception) {
        String message = "无法获取资源";
        LOGGER.error(message, exception);
        throw new StorageConfigurationException(message, exception);
    }
}
 

private String[] getResources(String packageName) {
    try {
        // 搜索资源
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(SystemPropertyUtils.resolvePlaceholders(packageName)) + "/" + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = resourcePatternResolver.getResources(packageSearchPath);
        // 提取资源
        Set<String> names = new HashSet<String>();
        String name = CacheConfiguration.class.getName();
        for (Resource resource : resources) {
            if (!resource.isReadable()) {
                continue;
            }
            // 判断是否静态资源
            MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
            AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
            if (!annotationMetadata.hasAnnotation(name)) {
                continue;
            }
            ClassMetadata classMetadata = metadataReader.getClassMetadata();
            names.add(classMetadata.getClassName());
        }
        return names.toArray(new String[0]);
    } catch (IOException exception) {
        String message = "无法获取资源";
        LOGGER.error(message, exception);
        throw new CacheConfigurationException(message, exception);
    }
}
 

/**
 * 获取指定包下的静态资源对象
 * 
 * @param packageName 包名
 * @return
 * @throws IOException
 */
private String[] getResources(String packageName) {
    try {
        // 搜索资源
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(SystemPropertyUtils.resolvePlaceholders(packageName)) + "/" + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = this.resourcePatternResolver.getResources(packageSearchPath);
        // 提取资源
        Set<String> names = new HashSet<String>();
        String name = ProtocolConfiguration.class.getName();
        for (Resource resource : resources) {
            if (!resource.isReadable()) {
                continue;
            }
            // 判断是否静态资源
            MetadataReader metadataReader = this.metadataReaderFactory.getMetadataReader(resource);
            ClassMetadata classMetadata = metadataReader.getClassMetadata();
            AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
            if (annotationMetadata.hasAnnotation(name)) {
                names.add(classMetadata.getClassName());
            } else {
                String[] interfaceNames = classMetadata.getInterfaceNames();
                for (String interfaceName : interfaceNames) {
                    metadataReader = this.metadataReaderFactory.getMetadataReader(interfaceName);
                    annotationMetadata = metadataReader.getAnnotationMetadata();
                    if (annotationMetadata.hasAnnotation(name)) {
                        names.add(classMetadata.getClassName());
                        break;
                    }
                }
            }
        }
        return names.toArray(new String[0]);
    } catch (IOException exception) {
        throw new RuntimeException(exception);
    }
}
 

private String[] getResources(String packageName) {
    try {
        // 搜索资源
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(SystemPropertyUtils.resolvePlaceholders(packageName)) + "/" + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = resourcePatternResolver.getResources(packageSearchPath);
        // 提取资源
        Set<String> names = new HashSet<String>();
        String name = CommunicationModule.class.getName();
        for (Resource resource : resources) {
            if (!resource.isReadable()) {
                continue;
            }
            // 判断是否静态资源
            MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
            AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
            if (!annotationMetadata.hasAnnotation(name)) {
                continue;
            }
            ClassMetadata classMetadata = metadataReader.getClassMetadata();
            names.add(classMetadata.getClassName());
        }
        return names.toArray(new String[0]);
    } catch (IOException exception) {
        String message = "无法获取资源";
        LOGGER.error(message, exception);
        throw new CommunicationConfigurationException(message, exception);
    }
}
 

@Override
public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) {
    // 获取当前正在扫描的类的注解信息
    AnnotationMetadata annotationMetadata = metadataReader.getAnnotationMetadata();
    // 获取当前正在扫描的类的类信息
    ClassMetadata classMetadata = metadataReader.getClassMetadata();
    // 获取当前正在扫描的类的路径等信息
    Resource resource = metadataReader.getResource();

    String className = classMetadata.getClassName();
    return StringUtils.hasText("er");
}
 

@Override
public ClassMetadata getClassMetadataFor(Class<?> clazz) {
	try {
		MetadataReader reader =
			new SimpleMetadataReaderFactory().getMetadataReader(clazz.getName());
		return reader.getAnnotationMetadata();
	} catch (IOException ex) {
		throw new IllegalStateException(ex);
	}
}
 

protected Set<Class> findConfigInterfaces() {
    if (interfacesCache == null) {
        synchronized (this) {
            if (interfacesCache == null) {
                log.trace("Locating config interfaces");
                Set<String> cache = new HashSet<>();
                for (String rootPackage : metadata.getRootPackages()) {
                    String packagePrefix = rootPackage.replace(".", "/") + "/**/*.class";
                    String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + packagePrefix;
                    Resource[] resources;
                    try {
                        resources = resourcePatternResolver.getResources(packageSearchPath);
                        for (Resource resource : resources) {
                            if (resource.isReadable()) {
                                MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
                                ClassMetadata classMetadata = metadataReader.getClassMetadata();
                                if (classMetadata.isInterface()) {
                                    for (String intf : classMetadata.getInterfaceNames()) {
                                        if (Config.class.getName().equals(intf)) {
                                            cache.add(classMetadata.getClassName());
                                            break;
                                        }
                                    }
                                }
                            }
                        }
                    } catch (IOException e) {
                        throw new RuntimeException("Error searching for Config interfaces", e);
                    }
                }
                log.trace("Found config interfaces: {}", cache);
                interfacesCache = cache;
            }
        }
    }
    return interfacesCache.stream()
            .map(ReflectionHelper::getClass)
            .collect(Collectors.toSet());
}
 

@Override
public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory)
        throws IOException {
    final ClassMetadata classMetadata = metadataReader.getClassMetadata();
    try {
        final Class<?> clazz = Class.forName(classMetadata.getClassName());
        return AnnotationUtils.findAnnotation(clazz, Action.class) != null;
    } catch (Throwable e) { // NOSONAR
        LOGGER.debug("Unable to filter class {}.", classMetadata.getClassName(), e);
    }
    return false;
}
 

@Override
public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) throws IOException {
    ClassMetadata classMetadata = metadataReader.getClassMetadata();
    String fullyQualifiedName = classMetadata.getClassName();
    String className = fullyQualifiedName.substring(fullyQualifiedName.lastIndexOf(".") + 1);
    return className.length() > 5 ? true : false;
}
 

@Override
public ClassMetadata getClassMetadata() {
	return this.annotationMetadata;
}
 

@Override
protected boolean match(ClassMetadata metadata) {
	return this.pattern.matcher(metadata.getClassName()).matches();
}
 

@Override
public ClassMetadata getClassMetadata() {
	return this.classMetadata;
}
 

@Override
protected boolean match(ClassMetadata metadata) {
	return this.pattern.matcher(metadata.getClassName()).matches();
}
 

public ClassMetadata getClassMetadata() {
    ClassMetadataReadingVisitor visitor = new ClassMetadataReadingVisitor();
    this.classReader.accept(visitor, true);
    return visitor;
}
 

@Override
public ClassMetadata getClassMetadata() {
	return this.classMetadata;
}