diff --git a/spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractBeanFactory.java b/spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractBeanFactory.java
index b1dd3ecf29bea80da20255c7eabcbf51a42f5ffb..c8fcac7477ecb5ec286e6fdaf001222c21db3d40 100644
--- a/spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractBeanFactory.java
+++ b/spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractBeanFactory.java
@@ -1659,6 +1659,8 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
      * @param beanDefinition the bean definition that the value comes from
      * @return the resolved value
      * @see #setBeanExpressionResolver
+     *
+     * 完成SpEL 解析
      */
     @Nullable
     protected Object evaluateBeanDefinitionString(@Nullable String value, @Nullable BeanDefinition beanDefinition) {
diff --git a/spring-beans/src/main/java/org/springframework/beans/support/ResourceEditorRegistrar.java b/spring-beans/src/main/java/org/springframework/beans/support/ResourceEditorRegistrar.java
index 2865bea12e956a16cddf01c190a50535cfafaadf..51d6099d0518475363ae16fef9c1e92ad9fb1198 100644
--- a/spring-beans/src/main/java/org/springframework/beans/support/ResourceEditorRegistrar.java
+++ b/spring-beans/src/main/java/org/springframework/beans/support/ResourceEditorRegistrar.java
@@ -126,9 +126,11 @@ public class ResourceEditorRegistrar implements PropertyEditorRegistrar {
 	 */
 	private void doRegisterEditor(PropertyEditorRegistry registry, Class<?> requiredType, PropertyEditor editor) {
 		if (registry instanceof PropertyEditorRegistrySupport) {
+			/** 重写解析器*/
 			((PropertyEditorRegistrySupport) registry).overrideDefaultEditor(requiredType, editor);
 		}
 		else {
+			/** 注册解析器*/
 			registry.registerCustomEditor(requiredType, editor);
 		}
 	}