Defensive handling of exceptions during factory method type checking

Also using ClassUtils.forName in AutowireUtils now in order to accept all common class name formats.

Issue: SPR-11034

spring-beans/src/test/java/org/springframework/beans/factory/support/BeanFactoryGenericsTests.java

@@ -735,6 +735,23 @@ public class BeanFactoryGenericsTests {
 		assertEquals(1, beans.size());
 	}
 
+	@Test
+	public void parameterizedInstanceFactoryMethodWithInvalidClassName() {
+		DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
+
+		RootBeanDefinition rbd = new RootBeanDefinition(MocksControl.class);
+		bf.registerBeanDefinition("mocksControl", rbd);
+
+		rbd = new RootBeanDefinition();
+		rbd.setFactoryBeanName("mocksControl");
+		rbd.setFactoryMethodName("createMock");
+		rbd.getConstructorArgumentValues().addGenericArgumentValue("x");
+		bf.registerBeanDefinition("mock", rbd);
+
+		Map<String, Runnable> beans = bf.getBeansOfType(Runnable.class);
+		assertEquals(0, beans.size());
+	}
+
 	@Test
 	public void parameterizedInstanceFactoryMethodWithIndexedArgument() {
 		DefaultListableBeanFactory bf = new DefaultListableBeanFactory();