java - Spring MVC ModelAttribute as Interface -

using spring mvc @controller, how have @requestmapping endpoint have @modelattribute declared interface?

i want have 3 different forms being posted mapping underlying classes of interface type.

so example, can have 3 different form objects action following:

@requestmapping(path="/dosomething", method=requestmethod.post) public string dosomething(objectinterface forminfo) {    ... } 

(where objectinterface interface, not concrete class.)

figured out. write , register custom handlermethodargumentresolver. below core code. need figure out concrete bean class pass webdatabinderfactory. controller can written accept interface , provided concrete implementing bean behind interface.

public class messageresolvertest implements handlermethodargumentresolver {      public boolean supportsparameter(methodparameter methodparameter) {         return methodparameter.getparametertype().equals(<interface>.class);     }      public object resolveargument(methodparameter methodparameter,                                   modelandviewcontainer modelandviewcontainer,                                   nativewebrequest nativewebrequest,                                   webdatabinderfactory webdatabinderfactory) throws exception {          string name = modelfactory.getnameforparameter(methodparameter);         webdatabinder webdatabinder = webdatabinderfactory.createbinder(nativewebrequest, new <concretebean>(), name);         mutablepropertyvalues mutablepropertyvalues = new mutablepropertyvalues(nativewebrequest.getparametermap());         webdatabinder.bind(mutablepropertyvalues);          return webdatabinder.getbindingresult().gettarget();     } }