复用代码系列：对象复制

曾经终败给现在 2022-05-26 13:21 205阅读 0赞

[复用代码系列目录][Link 1]

代码一：

package com.beans;
    
    import org.springframework.cglib.beans.BeanCopier;
    
    import java.util.HashMap;
    import java.util.Map;
    
    public class BeanCopierUtils {
         public static Map<String,BeanCopier> beanCopierMap = new HashMap<String,BeanCopier>();
        
         public static void copyProperties(Object source, Object target){
             String beanKey =  generateKey(source.getClass(), target.getClass());
             BeanCopier copier =  null;
             if(!beanCopierMap.containsKey(beanKey)){
                  copier = BeanCopier.create(source.getClass(), target.getClass(), false);
                  beanCopierMap.put(beanKey, copier);
             }else{
                  copier = beanCopierMap.get(beanKey);
             }
             copier.copy(source, target, null);
         }   
         private static String generateKey(Class<?> class1,Class<?>class2){
             return class1.toString() + class2.toString();
         }
    }

代码二：

package com.beans;
    
    import org.apache.commons.beanutils.BeanUtils;
    import org.apache.commons.beanutils.ConvertUtils;
    
    import java.lang.reflect.InvocationTargetException;
    import java.math.BigDecimal;
    
    public class BeanUtilsEx extends BeanUtils {
        public static void copyProperties(Object dest, Object orig) {
            try {
                BeanUtils.copyProperties(dest, orig);
            } catch (IllegalAccessException ex) {
                ex.printStackTrace();
            } catch (InvocationTargetException ex) {
                ex.printStackTrace();
            }
        }
    
        static {
            ConvertUtils.register(new DateConvert(), java.util.Date.class);
            ConvertUtils.register(new DateConvert(), java.sql.Date.class);
            ConvertUtils.register(new BigDecimalConvert(), BigDecimal.class);
        }
    }

[Link 1]: https://blog.csdn.net/sunct/article/details/80175458