80 lines
2.3 KiB
Java
80 lines
2.3 KiB
Java
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package com.rymcu.vertical.util;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.cglib.beans.BeanCopier;
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import org.springframework.util.CollectionUtils;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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/**
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* @author jiangjingming
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*/
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@Slf4j
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public class BeanCopierUtil {
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/**
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* beanCopier缓存
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* (A拷贝到B,确定一个beanCopier)
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*/
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private static Map<Class<?>,Map<Class<?>, BeanCopier>> beanCopierMap = new ConcurrentHashMap<>();
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/**
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* 拷贝方法
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* @param sourceBean
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* @param targetBean
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* @param <S>
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* @param <T>
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*/
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public static <S,T> void copy(S sourceBean,T targetBean){
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@SuppressWarnings("unchecked")
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Class<S> sourceClass = (Class<S>) sourceBean.getClass();
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@SuppressWarnings("unchecked")
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Class<T> targetClass = (Class<T>) targetBean.getClass();
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BeanCopier beanCopier = getBeanCopier(sourceClass,targetClass);
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beanCopier.copy(sourceBean,targetBean,null);
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}
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/**
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* 转换方法
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* @param sourceBean 原对象
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* @param targetClass 目标类
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* @param <S>
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* @param <T>
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* @return
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*/
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public static <S,T> T convert(S sourceBean,Class<T> targetClass){
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try {
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assert sourceBean!=null;
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T targetBean = targetClass.newInstance();
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copy(sourceBean,targetBean);
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return targetBean;
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} catch (Exception e) {
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log.error("Transform bean error",e);
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throw new RuntimeException(e);
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}
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}
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private static <S,T> BeanCopier getBeanCopier(Class<S> sourceClass, Class<T> targetClass ){
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Map<Class<?>, BeanCopier> map = beanCopierMap.get(sourceClass);
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if(CollectionUtils.isEmpty(map)){
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BeanCopier newBeanCopier = BeanCopier.create(sourceClass, targetClass, false);
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Map<Class<?>, BeanCopier> newMap = new ConcurrentHashMap<>();
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newMap.put(targetClass,newBeanCopier);
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beanCopierMap.put(sourceClass,newMap);
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return newBeanCopier;
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}
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BeanCopier beanCopier = map.get(targetClass);
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if(beanCopier == null){
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BeanCopier newBeanCopier = BeanCopier.create(sourceClass, targetClass, false);
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map.put(targetClass,newBeanCopier);
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return newBeanCopier;
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}
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return beanCopier;
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}
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}
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