org.jboss.resteasy.client.jaxrs.internal.ResteasyClientBuilderImpl Unable to get public no-arg constructor when upgrading to 26.1.2 #38052

tainguyenphat74 · 2025-03-12T11:51:28Z

tainguyenphat74
Mar 12, 2025

I got a problem when upgrading from 22.0.5 to 26.1.2. I got the error when trying to use jakarta.ws.rs.client.ClientBuilder, I'm implementing in own library (don't use Quarkus).
Here is the error:

ERROR [org.keycloak.services.error.KeycloakErrorHandler] (executor-thread-2) Uncaught server error: java.util.ServiceConfigurationError: jakarta.ws.rs.client.ClientBuilder: org.jboss.resteasy.client.jaxrs.internal.ResteasyClientBuilderImpl Unable to get public no-arg constructor
	at java.base/java.util.ServiceLoader.fail(ServiceLoader.java:586)
	at java.base/java.util.ServiceLoader.getConstructor(ServiceLoader.java:679)
	at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1240)
	at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1273)
	at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1309)
	at java.base/java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1393)
	at jakarta.ws.rs.client.FactoryFinder.lambda$findFirstService$1(FactoryFinder.java:178)
	at jakarta.ws.rs.client.FactoryFinder.findFirstService(FactoryFinder.java:187)
	at jakarta.ws.rs.client.FactoryFinder.find(FactoryFinder.java:114)
	at jakarta.ws.rs.client.ClientBuilder.newBuilder(ClientBuilder.java:62)
	at jakarta.ws.rs.client.ClientBuilder.newClient(ClientBuilder.java:86)

In build.gradle:
compileOnly 'org.jboss.resteasy:resteasy-client:6.2.4.Final'
compileOnly 'org.keycloak:keycloak-core:26.1.2'
compileOnly 'org.keycloak:keycloak-services:26.1.2'
compileOnly 'org.keycloak:keycloak-server-spi:26.1.2'
compileOnly 'org.keycloak:keycloak-server-spi-private:26.1.2'
// The rest lib ...

My ResourceBuilder:

import jakarta.ws.rs.client.Client;
import jakarta.ws.rs.client.ClientBuilder;
import jakarta.ws.rs.client.WebTarget;
import org.jboss.resteasy.client.jaxrs.ResteasyWebTarget;

// constructor
public ResourceBuilder(String serverUrl, Class<T> resourceType) {
        this.resourceType = resourceType;
        this.closed = false;
        this.client = ClientBuilder.newClient(); // the source of error
        this.target = (ResteasyWebTarget) client.target(serverUrl);
        this.target.register(CustomObjectMapper.class);
    }

The Question
Is there anyone facing this issue or have a hint for this?

Best thanks

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org.jboss.resteasy.client.jaxrs.internal.ResteasyClientBuilderImpl Unable to get public no-arg constructor when upgrading to 26.1.2 #38052

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org.jboss.resteasy.client.jaxrs.internal.ResteasyClientBuilderImpl Unable to get public no-arg constructor when upgrading to 26.1.2 #38052

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tainguyenphat74 Mar 12, 2025

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tainguyenphat74
Mar 12, 2025