我尝试使用代码copyCustom（）复制对象并使用原始对象内容创建新对象。
一旦我得到新对象。我使用get / set方法修改了一些内容（字符串内容），不幸的是原始对象的内容也发生了变化。
换句话说，新对象指的是原始对象。我只需要一个深度复制的对象，而不需要任何对原始对象的引用。
@SuppressWarnings("unchecked")
private <T> T copyCustom(T entity) throws IllegalAccessException, InstantiationException {
Class<?> clazz = entity.getClass();
T newEntity = (T) entity.getClass().newInstance();
while (clazz != null) {
copyFields(entity, newEntity, clazz);
clazz = clazz.getSuperclass();
}
return newEntity;
}
private <T> T copyFields(T entity, T newEntity, Class<?> clazz) throws IllegalAccessException {
List<Field> fields = new ArrayList<Field>();
for (Field field : clazz.getDeclaredFields()) {
fields.add(field);
}
for (Field field : fields) {
field.setAccessible(true);
// next we change the modifier in the Field instance to
// not be final anymore, thus tricking reflection into
// letting us modify the static final field
Field modifiersField;
try {
modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
int modifiers = modifiersField.getInt(field);
// blank out the final bit in the modifiers int
modifiers &= ~Modifier.FINAL;
modifiersField.setInt(field, modifiers);
field.set(newEntity, field.get(entity));
} catch (NoSuchFieldException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return newEntity;
}
public class Product extends ProductDataObject
{
private static final long serialVersionUID = -2574755579959571978L;
private InvestmentProductKey fInvestmentProductKey = null;
private ProductKey fProductKey = null;
private LabelDouble fTotalNetOfAssets = null;
private LabelString fPrimaryBenchmark = null;
private LabelBoolean fFundAgeLT3Mth = null;
private LabelBoolean fFundAgeBTW3Mth12Mth = null;
private LabelBoolean fFundAgeBTW12Mth36Mth = null;
private LabelBoolean fFundAgeBTW36Mth60Mth = null;
private LabelBoolean f
private LabelString[] fGeography = null;
private LabelBoolean fCapacityAvailableIndicator = null;
private LabelString fEquityCapitalization = null;
private LabelDate fFiscalYearEndDate = null;
private LabelString fFundStatus = null;
private LabelDate fExpireDateContractExpenseLimits = null;
private LabelDouble fMaximumExpenseRatio = null;
private LabelString fInvestments = null;
private YieldsAndDividends[] fYieldsAndDividends = null;
}