import org.springframework.core.DecoratingClassLoader; //导入依赖的package包/类
private Class<?> doResolveBeanClass(RootBeanDefinition mbd, Class<?>... typesToMatch) throws ClassNotFoundException {
	if (!ObjectUtils.isEmpty(typesToMatch)) {
		ClassLoader tempClassLoader = getTempClassLoader();
		if (tempClassLoader != null) {
			if (tempClassLoader instanceof DecoratingClassLoader) {
				DecoratingClassLoader dcl = (DecoratingClassLoader) tempClassLoader;
				for (Class<?> typeToMatch : typesToMatch) {
					dcl.excludeClass(typeToMatch.getName());
				}
			}
			String className = mbd.getBeanClassName();
			return (className != null ? ClassUtils.forName(className, tempClassLoader) : null);
		}
	}
	return mbd.resolveBeanClass(getBeanClassLoader());
}
 

import org.springframework.core.DecoratingClassLoader; //导入依赖的package包/类
/**
 * This implementation delegates to the LoadTimeWeaver, if specified.
 */
@Override
public ClassLoader getNewTempClassLoader() {
	ClassLoader tcl = (this.loadTimeWeaver != null ? this.loadTimeWeaver.getThrowawayClassLoader() :
			new SimpleThrowawayClassLoader(this.classLoader));
	String packageToExclude = getPersistenceProviderPackageName();
	if (packageToExclude != null && tcl instanceof DecoratingClassLoader) {
		((DecoratingClassLoader) tcl).excludePackage(packageToExclude);
	}
	return tcl;
}
 

import org.springframework.core.DecoratingClassLoader; //导入依赖的package包/类
private Class<?> doResolveBeanClass(RootBeanDefinition mbd, Class<?>... typesToMatch) throws ClassNotFoundException {
	ClassLoader beanClassLoader = getBeanClassLoader();
	ClassLoader classLoaderToUse = beanClassLoader;
	if (!ObjectUtils.isEmpty(typesToMatch)) {
		// When just doing type checks (i.e. not creating an actual instance yet),
		// use the specified temporary class loader (e.g. in a weaving scenario).
		ClassLoader tempClassLoader = getTempClassLoader();
		if (tempClassLoader != null) {
			classLoaderToUse = tempClassLoader;
			if (tempClassLoader instanceof DecoratingClassLoader) {
				DecoratingClassLoader dcl = (DecoratingClassLoader) tempClassLoader;
				for (Class<?> typeToMatch : typesToMatch) {
					dcl.excludeClass(typeToMatch.getName());
				}
			}
		}
	}
	String className = mbd.getBeanClassName();
	if (className != null) {
		Object evaluated = evaluateBeanDefinitionString(className, mbd);
		if (!className.equals(evaluated)) {
			// A dynamically resolved expression, supported as of 4.2...
			if (evaluated instanceof Class) {
				return (Class<?>) evaluated;
			}
			else if (evaluated instanceof String) {
				return ClassUtils.forName((String) evaluated, classLoaderToUse);
			}
			else {
				throw new IllegalStateException("Invalid class name expression result: " + evaluated);
			}
		}
		// When resolving against a temporary class loader, exit early in order
		// to avoid storing the resolved Class in the bean definition.
		if (classLoaderToUse != beanClassLoader) {
			return ClassUtils.forName(className, classLoaderToUse);
		}
	}
	return mbd.resolveBeanClass(beanClassLoader);
}
 

import org.springframework.core.DecoratingClassLoader; //导入依赖的package包/类
@Override
public ClassLoader getThrowawayClassLoader() {
	if (this.getThrowawayClassLoaderMethod != null) {
		ClassLoader target = (ClassLoader)
				ReflectionUtils.invokeMethod(this.getThrowawayClassLoaderMethod, this.classLoader);
		return (target instanceof DecoratingClassLoader ? target :
				new OverridingClassLoader(this.classLoader, target));
	}
	else {
		return new SimpleThrowawayClassLoader(this.classLoader);
	}
}