Jesli dobrze zrozumialem, to to co chcemy osiagnac to to:
@GetMapping("/")
public String get(@Username String username) {
return "Hello " + username;
}
Potrzebujemy
- Adnotacje mark'ujaca parametr.
@Target({ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface Username {
}
- Resolver do Springa, ktory bedzie umial wyciagnac to z headera. Ja tutaj dalem na przykald prosty basic auth (bez obslugi edge casow etc), raczej poradzisz sobie ze zmiana pod swoj use-case.
public class UsernameResolver implements HandlerMethodArgumentResolver {
@Override
public boolean supportsParameter(MethodParameter methodParameter) {
return methodParameter.hasParameterAnnotation(Username.class);
}
@Override
public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer modelAndViewContainer,
NativeWebRequest nativeWebRequest, WebDataBinderFactory webDataBinderFactory) {
String authHeader = nativeWebRequest.getHeader("Authorization");
String encodedPart = authHeader.split("Basic ")[1];
String decodedPart = new String(Base64.getDecoder().decode(encodedPart));
return decodedPart.split(":")[0];
}
}
- Trzeba resolver zarejestrowac w kontenerze
@Configuration
public class WebConf implements WebMvcConfigurer {
@Override
public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
argumentResolvers.add(new UsernameResolver());
}
}
voilà