copvalue from wrapper type to primitive type

/** * <pre> * if the field of orig is wrapper, will skip it and would not copy it to dest. * in the meantime, the primitive filed should default value when dest object corresponding wrapper field value is null; * </pre> * * @param dest * @param orig */void copyProperties(Object dest, Object orig) {    Field[] fields = orig.getClass().getDeclaredFields();    for (Field field : fields) {        try {            field.setAccessible(true);            Class<?> fieldType = field.getType();            String fieldName = field.getName();            Object fieldValue = field.get(orig);            // skip "orig" object's field that it's wrapper type and null;            // and  "dest" object's field that it's primitive type should be the default value automatically when "orig" object's filed value null;            if (ClassUtils.isPrimitiveWrapper(fieldType) && fieldValue == null) {                continue;            }            BeanUtils.copyProperty(dest, fieldName, fieldValue);        } catch (IllegalAccessException e) {            logger.error(e);        } catch (InvocationTargetException e) {            logger.error(e);        }    }}

result test:

@Testpublic void test01() throws InvocationTargetException, IllegalAccessException {    Product02 product02 = new Product02();    product02.setName("name02");    product02.setProduct_int(123);    product02.setProduct_double(4.56);    product02.setPrice(new Amount("product type1111", new BigDecimal(2681)));    Product01 product01 = new Product01();    System.out.println(product02);    copyProperties(product01, product02);    //BeanUtils.copyProperties(product01, product02);    System.out.println(product01);}

Product02{name='name02', product_int=123, product_double=4.56, product_boolean=null, product_char=null, product_byte=null, product_long=null, price=Amount{productTpye='product type1111', price=2681}}

Product01{name='name02', product_int=123, product_double=4.56, product_boolean=false, product_char= , product_byte=0, product_long=0, product_float=0.0, price=Amount{productTpye='product type1111', price=2681}}

/** * <pre> * if the field of orig is wrapper, will skip it and would not copy it to dest. * in the meantime, the primitive filed should default value when dest object corresponding wrapper field value is null; * </pre> * * @param dest * @param orig */void copyProperties(Object dest, Object orig) {    Field[] fields = orig.getClass().getDeclaredFields();    for (Field field : fields) {        try {            field.setAccessible(true);            Class<?> fieldType = field.getType();            String fieldName = field.getName();            Object fieldValue = field.get(orig);            // skip "orig" object's field that it's wrapper type and null;            // and  "dest" object's field that it's primitive type should be the default value automatically when "orig" object's filed value null;            if (ClassUtils.isPrimitiveWrapper(fieldType) && fieldValue == null) {                continue;            }            BeanUtils.copyProperty(dest, fieldName, fieldValue);        } catch (IllegalAccessException e) {            logger.error(e);        } catch (InvocationTargetException e) {            logger.error(e);        }    }}

result test:

@Testpublic void test01() throws InvocationTargetException, IllegalAccessException {    Product02 product02 = new Product02();    product02.setName("name02");    product02.setProduct_int(123);    product02.setProduct_double(4.56);    product02.setPrice(new Amount("product type1111", new BigDecimal(2681)));    Product01 product01 = new Product01();    System.out.println(product02);    copyProperties(product01, product02);    //BeanUtils.copyProperties(product01, product02);    System.out.println(product01);}

Product02{name='name02', product_int=123, product_double=4.56, product_boolean=null, product_char=null, product_byte=null, product_long=null, price=Amount{productTpye='product type1111', price=2681}}

Product01{name='name02', product_int=123, product_double=4.56, product_boolean=false, product_char= , product_byte=0, product_long=0, product_float=0.0, price=Amount{productTpye='product type1111', price=2681}}