Spring request mapping not working when specified in interface - spring-mvc

Question

I write request mapping at interface but it's not working.
Request / response body POJOs:
public class ReqAa {
private String firstValue;
private String secondValue;
public String getFirstValue() {
return firstValue;
}
public ReqAa setFirstValue(String firstValue) {
this.firstValue = firstValue;
return this;
}
public String getSecondValue() {
return secondValue;
}
public ReqAa setSecondValue(String secondValue) {
this.secondValue = secondValue;
return this;
}
}
public class RespAa{
private String status;
RespAa(String status){
this.status = status;
}
public String getStatus() {
return status;
}
public RespAa setStatus(String status) {
this.status = status;
return this;
}
}
Interfaces:
public interface A{
interface Aa{
#PostMapping("/do/something")
RespAa doSomething(#RequestBody ReqAa);
}
interface Ab{
#PostMapping("/do/another")
RespAb doAnother(#RequestBody ReqAb);
}
}
#PreAuthorize("hasAuthority('admin')")
#RequestMapping("/api/admin")
public interface IClient extends A.Aa{
}
Rest Controller:
#RestController
public class Client implements IClient{
#Override
public RespAa doSomething(ReqAa reqAa) {
return new RespAa("SUCCESS");
}
}
Spring boot #RequestBody could not mapping as Body. Its took it as parameter.
Example:
generated request: /api/admin/do/something?firstValue=fv&secondValue=sv
expected mapping: /api/admin/do/something
requestBody: { "firstValue":"fv","secondValue":"sv"}
its work when i used #RequestBody in implementaion method.
#RestController
public class Client implements IClient{
#Override
public RespAa doSomething(#RequestBody ReqAa reqAa) {
return new RespAa("SUCCESS");
}
}
I used spring boot version: 1.5.10.

Answer 1

I solved my problem using interface default method.
Working code here:
Interfaces:
public interface A{
interface Aa{
RespAa doSomething(ReqAa);
#PostMapping("/do/something")
default RespAa dDoSomething(#RequestBody ReqAa){
return doSomething(ReqAa);
}
}
interface Ab{
#PostMapping("/do/another")
RespAb doAnother(#RequestBody ReqAb);
}
}
#PreAuthorize("hasAuthority('admin')")
#RequestMapping("/api/admin")
public interface IClient extends A.Aa{
}
Rest Controller:
#RestController
public class Client implements IClient{
#Override
public RespAa doSomething(ReqAa reqAa) {
return new RespAa("SUCCESS");
}
}