theonedev/onedev · error · MappableException

Exception obtaining parameters

Error message

Exception obtaining parameters

What it means

ParameterValueHelper.getParameterValues wraps any unexpected RuntimeException that is not a WebApplicationException into org.glassfish.jersey.server.internal.process.MappableException with message "Exception obtaining parameters". It is a catch-all indicating the resource method's parameters could not be resolved, and the root cause carries the real problem.

Solutions

1. Inspect the MappableException's cause chain to find the real exception
2. Fix the offending ParamConverter/provider that threw during parameter resolution
3. Add logging/request filter to capture the full stack trace early

Example fix

// before
catch (MappableException e) { log.error(e.getMessage()); }
// after
catch (MappableException e) { log.error("Param resolution failed", e.getCause() != null ? e.getCause() : e); }

try { params = getParameterValues(...); } catch (MappableException e) { Throwable root = e; while (root.getCause() != null) root = root.getCause(); log.error("Parameter resolution failed: {}", root.getMessage(), root); }

When it happens

Trigger: Any unexpected exception thrown while injecting resource method parameters — e.g. a custom ParamConverter, ValueParamProvider, or bean validation hook throwing RuntimeException during parameter resolution; also failures while reading entity bodies that propagate as runtime errors.

Common situations: Buggy custom param converters/providers; container misconfiguration; constructor injection failures inside providers; chained root causes that need unwrapping to diagnose.

Understand the failure class

Background: 'Something went wrong' / 'Request failed (500)' / 'HTTP error! status: 404' — what failed HTTP requests actually mean and how to find the real cause — this error's family across 28 libraries.

Related errors

• Error parsing media type
• Http request failed (status: )
• Http request failed (url: , status code: , error message: )
• 405
• 405

AI-assisted analysis of theonedev/onedev@d44925c47c (2026-09-06). Data as JSON: /api/errors/46c8274a49b7637f. Report an issue: GitHub.

Appendix: source

Thrown at server-core/src/main/java/org/glassfish/jersey/server/spi/internal/ParameterValueHelper.java:85

            }

            if (entityProviderIndex != -1) {
                params[entityProviderIndex] = valueProviders.get(entityProviderIndex).apply(request);
            }

            return params;
        } catch (WebApplicationException e) {
            throw e;
        } catch (MessageBodyProviderNotFoundException e) {
            throw new NotSupportedException(e);
        } catch (ProcessingException e) {
            throw e;
        } catch (RuntimeException e) {
            if (e.getCause() instanceof WebApplicationException) {
                throw (WebApplicationException) e.getCause();
            }

            throw new MappableException("Exception obtaining parameters", e);
        } finally {
			EntityDeserializer.popParams();
		}
    }

    /**
     * Create list of parameter value providers for the given {@link Parameterized
     * parameterized} resource model component.
     *
     * @param valueSuppliers all registered value suppliers.
     * @param parameterized  parameterized resource model component.
     * @return list of parameter value providers for the parameterized component.
     */
    public static List<ParamValueFactoryWithSource<?>> createValueProviders(Collection<ValueParamProvider> valueSuppliers,
            Parameterized parameterized) {
        if ((null == parameterized.getParameters()) || (0 == parameterized.getParameters().size())) {
            return Collections.emptyList();
        }

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