public static <T> void emptyNullValue(final T model) {
Class<?> tClass = model.getClass();
List<Field> fields = Arrays.asList(tClass.getDeclaredFields());
for (Field field : fields) {
Type t = field.getType();
field.setAccessible(true);
try {
if (t == String.class && field.get(model) == null) {
field.set(model, "");
} else if (t == BigDecimal.class && field.get(model) == null) {
field.set(model, new BigDecimal(0));
} else if (t == Long.class && field.get(model) == null) {
field.set(model, new Long(0));
} else if (t == Integer.class && field.get(model) == null) {
field.set(model, new Integer(0));
} else if (t == Date.class && field.get(model) == null) {
field.set(model, TimeHelper.LocalDateTimeToDate(java.time.LocalDateTime.of(1990, 1, 1, 0, 0, 0, 0)));
}
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
} 

ModelHelper.emptyNullValue(request); 

public static <T> void buildCreateAndModify(T model,ModifyModel modifyModel,boolean isCreate){
Class<?> tClass = model.getClass();
List<Field> fields = Arrays.asList(tClass.getDeclaredFields());
for (Field field : fields) {
Type t = field.getType();
field.setAccessible(true);
try {
if(isCreate){
if (field.getName().equals(modifyModel.getcId())) {
field.set(model, modifyModel.getUserId());
}
if (field.getName().equals(modifyModel.getcName())) {
field.set(model, modifyModel.getUserName());
}
if (field.getName().equals(modifyModel.getcTime())) {
field.set(model, new Date());
}
}
if (field.getName().equals(modifyModel.getmId())) {
field.set(model, modifyModel.getUserId());
}
if (field.getName().equals(modifyModel.getmName())) {
field.set(model, modifyModel.getUserName());
}
if (field.getName().equals(modifyModel.getmTime())) {
field.set(model, new Date());
}
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
}

ModifyModel modifyModel = new ModifyModel();
modifyModel.setUserId(getCurrentEmployee().getId());
modifyModel.setUserName(getCurrentEmployee().getName());
if (request.getId() == 0) {
ModelHelper.buildCreateAndModify(request, modifyModel, true);
deptService.insert(request);
} else {
ModelHelper.buildCreateAndModify(request, modifyModel, false);
deptService.updateByPrimaryKey(request);
}

@Override
public boolean supportsParameter(MethodParameter parameter) {
return parameter.hasParameterAnnotation(ManageModelConfig.class);
}

@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
Object manageModel =getRequestResponseBodyMethodProcessor().resolveArgument(parameter, mavContainer, webRequest, binderFactory);
ServletRequest servletRequest = webRequest.getNativeRequest(ServletRequest.class);
Employee currentUser = (Employee) servletRequest.getAttribute(DEFAULT_ATTRIBUTE_GET_USER_FROM_REQUEST);
if (null == currentUser)
{
return manageModel;
}
ManageModelConfig parameterAnnotation = parameter.getParameterAnnotation(ManageModelConfig.class);
ModelHelper.setDefaultAndSystemFieldsValue(manageModel, currentUser,parameterAnnotation.isSetDefaultFieldsValue());
return manageModel;
}

private RequestMappingHandlerAdapter requestMappingHandlerAdapter=null;
private RequestResponseBodyMethodProcessor requestResponseBodyMethodProcessor = null;
private RequestResponseBodyMethodProcessor getRequestResponseBodyMethodProcessor() {
if(null==requestMappingHandlerAdapter)
{
requestMappingHandlerAdapter=new RequestMappingHandlerAdapter();
}
if (null==requestResponseBodyMethodProcessor) {
List<HttpMessageConverter<?>> messageConverters = requestMappingHandlerAdapter.getMessageConverters();
messageConverters.add(new MappingJackson2HttpMessageConverter());
requestResponseBodyMethodProcessor = new RequestResponseBodyMethodProcessor(messageConverters);
}
return requestResponseBodyMethodProcessor;
} 

Object manageModel =getRequestResponseBodyMethodProcessor().resolveArgument(parameter, mavContainer, webRequest, binderFactory); 

ServletRequest servletRequest = webRequest.getNativeRequest(ServletRequest.class);
Employee currentUser = (Employee) servletRequest.getAttribute(DEFAULT_ATTRIBUTE_GET_USER_FROM_REQUEST); 

ManageModelConfig parameterAnnotation = parameter.getParameterAnnotation(ManageModelConfig.class);
ModelHelper.setDefaultAndSystemFieldsValue(manageModel, currentUser,parameterAnnotation.isSetDefaultFieldsValue());

<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager">
<mvc:argument-resolvers>
<bean class="cn.wanmei.party.management.common.mvc.method.annotation.ManageModelConfigMethodArgumentResolver"/>
</mvc:argument-resolvers>
</mvc:annotation-driven> 

@RequestMapping(value = "/addOrUpdateUser")
@ResponseBody
public Map<String, Object> addOrUpdateUser(@ManageModelConfig(isSetDefaultFieldsValue=true) EmployeeDto request) {
Map<String, Object> ret = new HashMap<>();
ValidateUtil.ValidateResult result= new ValidateUtil().ValidateModel(request);
boolean isCreate=request.getId() == 0;
try {
if (isCreate)
{
employeeService.insert(request);
}
else
{
employeeService.updateByPrimaryKey(request);
}
ret.put("data", "ok");
}catch (Exception e){
ret.put("err", e.getMessage());
}
return ret;
}