利用Java怎么对对象进行操作-创新互联
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对象复制(反射法)
public static void copyProp(Object from, Object to, String... filterProp) { HashSetfilterSet = new HashSet (Arrays.asList(filterProp)); Class<?> fromc = from.getClass(); Class<?> toc = to.getClass(); List to_fields = new ArrayList () ; while (toc != null) { to_fields.addAll(Arrays.asList(toc.getDeclaredFields())); toc = toc.getSuperclass(); } for (Field to_field : to_fields) { try{ if (filterSet.contains(to_field.getName())||"serialVersionUID".equals(to_field.getName())) { continue; } Field from_field = null; try{ from_field = fromc.getDeclaredField(to_field.getName()); }catch (Exception e){ continue; } from_field.setAccessible(true); Object value = from_field.get(from); if(value==null){ continue; } to_field.setAccessible(true); to_field.set(to, value); }catch (Exception e){ e.printStackTrace(); } } }
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