protected Object resolveCommonArgument(
MethodParameter methodParameter, NativeWebRequest webRequest) throws Exception {
// Invoke custom argument resolvers if present...
if (this.customArgumentResolvers != null) {
for (WebArgumentResolver argumentResolver : this.customArgumentResolvers) {
Object value = argumentResolver.resolveArgument(methodParameter, webRequest);
if (value != WebArgumentResolver.UNRESOLVED) {
return value;
}
}
}
// Resolution of standard parameter types...
Class paramType = methodParameter.getParameterType();
Object value = resolveStandardArgument(paramType, webRequest);
if (value != WebArgumentResolver.UNRESOLVED
&& !ClassUtils.isAssignableValue(paramType, value)) {
throw new IllegalStateException(
"Standard argument type ["
+ paramType.getName()
+ "] resolved to incompatible value of type ["
+ (value != null ? value.getClass() : null)
+ "]. Consider declaring the argument type in a less specific fashion.");
}
return value;
}
public boolean matches(NativeWebRequest request, MethodParameter methodParameter) {
if (this.webArgumentResolvers != null) {
for (WebArgumentResolver resolver : this.webArgumentResolvers) {
try {
if (resolver.resolveArgument(methodParameter, request)
!= WebArgumentResolver.UNRESOLVED) {
return true;
}
} catch (Exception e) {
throw new IllegalStateException(e);
}
}
}
return false;
}