001/* 002 * Copyright 2002-2019 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.beans.annotation; 018 019import java.lang.annotation.Annotation; 020import java.lang.reflect.Method; 021import java.util.Arrays; 022import java.util.Collections; 023import java.util.HashSet; 024import java.util.Set; 025 026import org.springframework.beans.BeanWrapper; 027import org.springframework.beans.PropertyAccessorFactory; 028import org.springframework.lang.Nullable; 029import org.springframework.util.ReflectionUtils; 030import org.springframework.util.StringValueResolver; 031 032/** 033 * General utility methods for working with annotations in JavaBeans style. 034 * 035 * @author Rob Harrop 036 * @author Juergen Hoeller 037 * @since 2.0 038 * @deprecated as of 5.2, in favor of custom annotation attribute processing 039 */ 040@Deprecated 041public abstract class AnnotationBeanUtils { 042 043 /** 044 * Copy the properties of the supplied {@link Annotation} to the supplied target bean. 045 * Any properties defined in {@code excludedProperties} will not be copied. 046 * @param ann the annotation to copy from 047 * @param bean the bean instance to copy to 048 * @param excludedProperties the names of excluded properties, if any 049 * @see org.springframework.beans.BeanWrapper 050 */ 051 public static void copyPropertiesToBean(Annotation ann, Object bean, String... excludedProperties) { 052 copyPropertiesToBean(ann, bean, null, excludedProperties); 053 } 054 055 /** 056 * Copy the properties of the supplied {@link Annotation} to the supplied target bean. 057 * Any properties defined in {@code excludedProperties} will not be copied. 058 * <p>A specified value resolver may resolve placeholders in property values, for example. 059 * @param ann the annotation to copy from 060 * @param bean the bean instance to copy to 061 * @param valueResolver a resolve to post-process String property values (may be {@code null}) 062 * @param excludedProperties the names of excluded properties, if any 063 * @see org.springframework.beans.BeanWrapper 064 */ 065 public static void copyPropertiesToBean(Annotation ann, Object bean, @Nullable StringValueResolver valueResolver, 066 String... excludedProperties) { 067 068 Set<String> excluded = (excludedProperties.length == 0 ? Collections.emptySet() : 069 new HashSet<>(Arrays.asList(excludedProperties))); 070 Method[] annotationProperties = ann.annotationType().getDeclaredMethods(); 071 BeanWrapper bw = PropertyAccessorFactory.forBeanPropertyAccess(bean); 072 for (Method annotationProperty : annotationProperties) { 073 String propertyName = annotationProperty.getName(); 074 if (!excluded.contains(propertyName) && bw.isWritableProperty(propertyName)) { 075 Object value = ReflectionUtils.invokeMethod(annotationProperty, ann); 076 if (valueResolver != null && value instanceof String) { 077 value = valueResolver.resolveStringValue((String) value); 078 } 079 bw.setPropertyValue(propertyName, value); 080 } 081 } 082 } 083 084}