springboot 访问Request method 'POST' not supported

@Controller
@RequestMapping("/driverstudymanager")
public class DsmController{
    @RequestMapping(value="/signed/{signedtype}",method = RequestMethod.POST)
    @ResponseBody
    public String signed(@PathVariable Integer signedtype,@RequestBody SignedInfo signedInfo) {
        System.out.println(signedtype+signedInfo.toString());
        return signedtype.toString();
    }
}

解决方法：把name="/signed/{signedtype}"改成value="/signed/{signedtype}"可以解决问题，name和value是一样的，可能和springboot版本有关系