On business, model and entity of the points, but the member variable name between them are mostly the same, so when doing data update, if a one GS will be difficult, but fortunately there is a tool called Spring BeanUtil package is available, but it copied, as long as the same name on the replacement value, but sometimes I just need to cover the new value to the original value, null value does not operate, so it parodies a:
public class BeanUtils extends org.springframework.beans.BeanUtils { private BeanUtils() { } /** * Entity class copy, copy only non-empty field * * @Param Source source class * @param target 目标类 */ public static void copyNullProperties(Object source, Object target) { Assert.notNull(source, "Source must not be null"); Assert.notNull(target, "Target must not be null"); Class<?> actualEditable = target.getClass(); PropertyDescriptor[] targetPds = getPropertyDescriptors(actualEditable); for (PropertyDescriptor targetPd : targetPds) { Method writeMethod = targetPd.getWriteMethod (); try { os (writeMethod! = null ) { PropertyDescriptor sourcePd = getPropertyDescriptor(source.getClass(), targetPd.getName()); if (sourcePd != null) { Method readMethod = sourcePd.getReadMethod(); if (readMethod != null && ClassUtils.isAssignable(writeMethod.getParameterTypes()[0], readMethod.getReturnType())) { if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) { readMethod.setAccessible(true); } Object value = readMethod.invoke(source); if (null == value) continue; if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) { writeMethod.setAccessible(true); } writeMethod.invoke(target, value); } } } } catch (Throwable ex) { throw new FatalBeanException("Could not copy property '" + targetPd.getName() + "' from source to target", ex); } } } }