json - Spring @ReponseBody @RequestBody with abstract class -

suppose have 3 classes.

public abstract class animal {}  public class cat extends animal {}  public class dog extends animal {} 

can this?

input: json dog or cat

output: dog/cat depends on input object type

i dont understand why following code doesnt work. or should use 2 separate methods handle new dog , cat?

@requestmapping(value = "/animal", method = requestmethod.post, produces = "application/json; charset=utf-8") private @responsebody <t extends animal>t insertanimal(@requestbody t animal) {     return animal; } 

update: sry forget include error message

http status 500 - request processing failed; nested exception java.lang.illegalargumentexception: type variable 't' can not resolved

ref link

i found answer myself , here reference link.

what have done added code above abstract class

import com.fasterxml.jackson.annotation.jsonsubtypes; import com.fasterxml.jackson.annotation.jsontypeinfo; import com.fasterxml.jackson.annotation.jsontypeinfo.*;  @jsontypeinfo(use = id.name, include = as.property, property = "type") @jsonsubtypes({     @jsonsubtypes.type(value = cat.class, name = "cat"),     @jsonsubtypes.type(value = dog.class, name = "dog") }) public abstract class animal{} 

then in json input in html,

var inputjson = {     "type":"cat",     //blablabla }; 

after submitting json , in controller,

@requestmapping(value = "/animal", method = requestmethod.post, produces = "application/json; charset=utf-8", consumes=mediatype.application_json_value) public @responsebody insertanimal(@requestbody animal tmp) {     return tmp; } 

in case variable tmp automatically converted dog or cat object, depending on json input.