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@ -1,15 +1,20 @@
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package com.ruoyi.common.core.utils;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.lang.SimpleCache;
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import cn.hutool.core.map.MapUtil;
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import cn.hutool.core.util.ObjectUtil;
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import cn.hutool.core.util.ReflectUtil;
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import cn.hutool.extra.cglib.CglibUtil;
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import cn.hutool.core.util.StrUtil;
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import lombok.AccessLevel;
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import lombok.NoArgsConstructor;
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import org.springframework.cglib.beans.BeanCopier;
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import org.springframework.cglib.beans.BeanMap;
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import org.springframework.cglib.core.Converter;
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import java.util.List;
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import java.util.Map;
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import java.util.stream.Collectors;
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/**
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* bean深拷贝工具(基于 cglib 性能优异)
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@ -33,7 +38,8 @@ public class BeanCopyUtils {
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if (ObjectUtil.isNull(desc)) {
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return null;
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}
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return CglibUtil.copy(source, desc);
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final V target = ReflectUtil.newInstanceIfPossible(desc);
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return copy(source, target);
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}
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/**
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@ -50,7 +56,8 @@ public class BeanCopyUtils {
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if (ObjectUtil.isNull(desc)) {
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return null;
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}
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CglibUtil.copy(source, desc);
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BeanCopier beanCopier = BeanCopierCache.INSTANCE.get(source.getClass(), desc.getClass(), null);
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beanCopier.copy(source, desc, null);
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return desc;
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}
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@ -68,7 +75,11 @@ public class BeanCopyUtils {
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if (CollUtil.isEmpty(sourceList)) {
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return CollUtil.newArrayList();
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}
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return CglibUtil.copyList(sourceList, () -> ReflectUtil.newInstanceIfPossible(desc));
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return sourceList.stream().map(source -> {
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V target = ReflectUtil.newInstanceIfPossible(desc);
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copy(source, target);
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return target;
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}).collect(Collectors.toList());
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}
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/**
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@ -77,12 +88,12 @@ public class BeanCopyUtils {
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* @param bean 数据来源实体
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* @return map对象
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*/
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@SuppressWarnings("all")
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@SuppressWarnings("unchecked")
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public static <T> Map<String, Object> copyToMap(T bean) {
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if (ObjectUtil.isNull(bean)) {
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return null;
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}
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return CglibUtil.toMap(bean);
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return BeanMap.create(bean);
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}
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/**
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@ -99,7 +110,8 @@ public class BeanCopyUtils {
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if (ObjectUtil.isNull(beanClass)) {
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return null;
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}
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return CglibUtil.toBean(map, beanClass);
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T bean = ReflectUtil.newInstanceIfPossible(beanClass);
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return mapToBean(map, bean);
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}
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/**
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@ -116,6 +128,54 @@ public class BeanCopyUtils {
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if (ObjectUtil.isNull(bean)) {
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return null;
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}
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return CglibUtil.fillBean(map, bean);
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BeanMap.create(bean).putAll(map);
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return bean;
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}
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/**
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* BeanCopier属性缓存<br>
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* 缓存用于防止多次反射造成的性能问题
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*
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* @author Looly
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* @since 5.4.1
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*/
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public enum BeanCopierCache {
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/**
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* BeanCopier属性缓存单例
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*/
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INSTANCE;
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private final SimpleCache<String, BeanCopier> cache = new SimpleCache<>();
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/**
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* 获得类与转换器生成的key在{@link BeanCopier}的Map中对应的元素
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*
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* @param srcClass 源Bean的类
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* @param targetClass 目标Bean的类
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* @param converter 转换器
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* @return Map中对应的BeanCopier
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*/
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public BeanCopier get(Class<?> srcClass, Class<?> targetClass, Converter converter) {
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final String key = genKey(srcClass, targetClass, converter);
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return cache.get(key, () -> BeanCopier.create(srcClass, targetClass, converter != null));
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}
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/**
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* 获得类与转换器生成的key
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*
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* @param srcClass 源Bean的类
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* @param targetClass 目标Bean的类
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* @param converter 转换器
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* @return 属性名和Map映射的key
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*/
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private String genKey(Class<?> srcClass, Class<?> targetClass, Converter converter) {
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final StringBuilder key = StrUtil.builder()
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.append(srcClass.getName()).append('#').append(targetClass.getName());
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if(null != converter){
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key.append('#').append(converter.getClass().getName());
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}
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return key.toString();
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}
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}
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}
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