java - Specify type for @RequestBody when using an abstract class -

java - Specify type for @RequestBody when using an abstract class -

i have endpoint have receiving abstract class:

@requestmapping(value = url, method = requestmethod.post) @responsebody public modelmap update(@requestbody someabstractclass form) { ... }

when post error:

could not read json: can not build instance of ..., problem: abstract types can instantiated dditional type info

i understand why i'm getting error, can't figure out specify the additional type information. ideally specify type of concrete class through 1 of annotations, solution suffice @ point.

i believe uisng jackson json serailizer.

first of create sure have

<context:annotation-config/>

in spring xml conf file.

i used have same issue de-serialization of inherited classes solved annotating

@jsondeserialize(as=child.class) public abstract class abstractparent { ... }

java spring spring-mvc