那么在代码A˜q™é‡Œåˆ°åº•å‘生了些什么呢(只针对属性编辑器来讲)åQŸä¸‹é¢ä¸€å±‚层地往里面走ã€?br>    ˜q™æ®µä»£ç é‡Œé¢æ²¡æœ‰ä»ÖM½•çš„有兛_±žæ€§ç¼–辑器的代码，那么ž®±åªæœ‰å¾€BeanWrapperImpl里面查找ã€?br>
     public BeanWrapperImpl(Object object) {
         registerDefaultEditors();//˜q™é‡Œž®±å¼€å§‹æ³¨å†Œé»˜è®¤çš„属性编辑器äº?br>         setWrappedInstance(object);
     } 

      BeanWrapperImpl¾cȝ‘ô承自AbstractPropertyAccessor抽象¾c»ï¼ŒAbstractPropertyAccessor¾cÕdˆ¾l§æ‰¿è‡ªPropertyEditorRegistrySupport¾c»ï¼Œåœ¨PropertyEditorRegistrySupport中就实现了registerDefaultEditors()˜q™ä¸ªæ–ÒŽ(gu¨©)³•åQŒä»£ç å¦‚下：(x¨¬)

     protected void registerDefaultEditors() {
         this.defaultEditors = new HashMap(32);

         // Simple editors, without parameterization capabilities.
         // The JDK does not contain a default editor for any of these target types.
         this.defaultEditors.put(Class.class, new ClassEditor());
         this.defaultEditors.put(Class[].class, new ClassArrayEditor());
         this.defaultEditors.put(File.class, new FileEditor());
         this.defaultEditors.put(InputStream.class, new InputStreamEditor());
         this.defaultEditors.put(Locale.class, new LocaleEditor());
         this.defaultEditors.put(Properties.class, new PropertiesEditor());
         this.defaultEditors.put(Resource[].class, new ResourceArrayPropertyEditor());
         this.defaultEditors.put(URL.class, new URLEditor());

         // Register JDK-1.4-specific editors.
         if (JdkVersion.isAtLeastJava14()) {
             this.defaultEditors.put(URI.class, new URIEditor());
             this.defaultEditors.put(Pattern.class, new PatternEditor());
         }

         // Default instances of collection editors.
         // Can be overridden by registering custom instances of those as custom editors.
         this.defaultEditors.put(Collection.class, new CustomCollectionEditor(Collection.class));
         this.defaultEditors.put(Set.class, new CustomCollectionEditor(Set.class));
         this.defaultEditors.put(SortedSet.class, new CustomCollectionEditor(SortedSet.class));
         this.defaultEditors.put(List.class, new CustomCollectionEditor(List.class));
         this.defaultEditors.put(SortedMap.class, new CustomMapEditor(SortedMap.class));

         // Default editors for primitive arrays.
         this.defaultEditors.put(byte[].class, new ByteArrayPropertyEditor());
         this.defaultEditors.put(char[].class, new CharArrayPropertyEditor());

         // The JDK does not contain a default editor for char!
         this.defaultEditors.put(char.class, new CharacterEditor(false));
         this.defaultEditors.put(Character.class, new CharacterEditor(true));

         // Spring's CustomBooleanEditor accepts more flag values than the JDK's default editor.
         this.defaultEditors.put(boolean.class, new CustomBooleanEditor(false));
         this.defaultEditors.put(Boolean.class, new CustomBooleanEditor(true));

         // The JDK does not contain default editors for number wrapper types!
         // Override JDK primitive number editors with our own CustomNumberEditor.
         this.defaultEditors.put(byte.class, new CustomNumberEditor(Byte.class, false));
         this.defaultEditors.put(Byte.class, new CustomNumberEditor(Byte.class, true));
         this.defaultEditors.put(short.class, new CustomNumberEditor(Short.class, false));
         this.defaultEditors.put(Short.class, new CustomNumberEditor(Short.class, true));
         this.defaultEditors.put(int.class, new CustomNumberEditor(Integer.class, false));
         this.defaultEditors.put(Integer.class, new CustomNumberEditor(Integer.class, true));
         this.defaultEditors.put(long.class, new CustomNumberEditor(Long.class, false));
         this.defaultEditors.put(Long.class, new CustomNumberEditor(Long.class, true));
         this.defaultEditors.put(float.class, new CustomNumberEditor(Float.class, false));
         this.defaultEditors.put(Float.class, new CustomNumberEditor(Float.class, true));
         this.defaultEditors.put(double.class, new CustomNumberEditor(Double.class, false));
         this.defaultEditors.put(Double.class, new CustomNumberEditor(Double.class, true));
         this.defaultEditors.put(BigDecimal.class, new CustomNumberEditor(BigDecimal.class, true));
         this.defaultEditors.put(BigInteger.class, new CustomNumberEditor(BigInteger.class, true));
    }