解决SpringMVC同时接收Json和Restful时Request里有Map的问题

{
 "fieldMap": 
 {
  "middleName": "1",
  "mailingAddress": "2",
  "mobilenumber": "3" 
 }
}

//注意要让 @ModelAttribute RequestDTO 自动封装成 Map 的话要像下面的format。
http://localhost:8080/hello?fieldMap[middleName]=1&fieldMap[mailingAddress]=2&fieldMap[mobilenumber]=3

public class RequestDTO {

 private HashMap<String, String> fieldMap;

 public HashMap<String, String> getFieldMap() {
  return fieldMap;
 }
 public void setFieldMap(HashMap<String, String> fieldMap) {
  this.fieldMap = fieldMap;
 }
}

//接收 Json 数据, consumes = "application/json" 来区分同一个请求是用json还是其他
@RequestMapping(method = { RequestMethod.POST },
   value = { "/hello" }, 
   consumes = "application/json")
public final void requestByJson(
  final HttpServletRequest httpRequest,
  final HttpServletResponse httpResponse,
  @RequestBody final RequestDTO requestDTO) {

 ...
}

//接收 Restful 数据， @ModelAttribute 将param配对成 RequestDTO
@RequestMapping(method = { RequestMethod.POST },
   value = { "/hello" })
public final void restfulRequest(
  final HttpServletRequest httpRequest, 
  final HttpServletResponse httpResponse,
  @ModelAttribute final RequestDTO requestDTO ){

 ...

 }