spring - setting multiple request parameter Optional -

i stuck in big problem want ignore attributes of object not know how skip multiple attributes same request object

here code

testrequestinfo.java

public class testrequestinfo extends basefilter {      private string id;      public string getid() {         return id;     }     public void setid(string id) {         this.id = id;     }   }  

basefilter.java

public class basefilter {      private paginginfo paging;      public paginginfo getpaging() {         return paging;     }     public void setpaging(paginginfo paging) {         this.paging = paging;     }   } 

paginginfo.java

@xmlrootelement(name = "paging")     public class paginginfo {         private integer totalnumofrows;         private integer minrownumber;         private integer maxrownumber;          public paginginfo() {             super();         }          public paginginfo(integer totalnumofrows, integer maxrownumber, integer minrownumber) {             super();             this.totalnumofrows = totalnumofrows;             this.maxrownumber = maxrownumber;             this.minrownumber = minrownumber;         }          public paginginfo(integer maxrownumber, integer minrownumber) {             super();             this.maxrownumber = maxrownumber;             this.minrownumber = minrownumber;         }         public integer gettotalnumofrows() {             return totalnumofrows;         }         public void settotalnumofrows(integer totalnumofrows) {             this.totalnumofrows = totalnumofrows;         }          public integer getminrownumber() {             return minrownumber;         }          public void setminrownumber(integer minrownumber) {             this.minrownumber = minrownumber;         }          public integer getmaxrownumber() {             return maxrownumber;         }          public void setmaxrownumber(integer maxrownumber) {             this.maxrownumber = maxrownumber;         }     } 

controller

 @requestmapping(value = { "/testlist"} , method=requestmethod.get, produces = mediatype.application_json_value)         public @responsebody string testlist(httpservletrequest request, testrequestinfo testrequestinfo)         {         ....         ....         } 

request made

http://example/abc/testlist?id=&paging.maxrownumber=&paging.minrownumber= 

on blank attribute request made bad request , gives error 400 , if populate these parameters, gives proper response.

@requestparam(value = "i", required=false) works singly entity how can make minrownumber , maxrownumber optional?

thanks in advance

here code , test.

> http://localhost:8080/fileupload/testlist.htm?id=1&paging.maxrownumber=1&paging.minrownumber=1 > testrequestinfo [id=1, getpaging()=paginginfo [totalnumofrows=null, > minrownumber=1, maxrownumber=1]] >  > http://localhost:8080/fileupload/testlist.htm?id=1&paging.maxrownumber=1&paging.minrownumber= > testrequestinfo [id=1, getpaging()=paginginfo [totalnumofrows=null, > minrownumber=null, maxrownumber=1]] >  > http://localhost:8080/fileupload/testlist.htm?id=1&paging.maxrownumber=&paging.minrownumber= > testrequestinfo [id=1, getpaging()=paginginfo [totalnumofrows=null, > minrownumber=null, maxrownumber=null]]     @requestmapping(value = { "/testlist"} , method=requestmethod.get)  public @responsebody string testlist(httpservletrequest request, testrequestinfo testrequestinfo)  {      system.out.println(testrequestinfo);     return "ss";  } 

my spring config

<servlet>     <servlet-name>mvc-dispatcher</servlet-name>     <servlet-class>         org.springframework.web.servlet.dispatcherservlet     </servlet-class>     <load-on-startup>1</load-on-startup> </servlet>  <servlet-mapping>     <servlet-name>mvc-dispatcher</servlet-name>     <url-pattern>*.htm</url-pattern> </servlet-mapping> 

as can see code functional, seems problem url-pattern using.

check using

<mvc:annotation-driven/>