Mysterious X509HostnameVerifier dependency - rest

Question

While extending a previously working project, I seemed to have muffed a maven dependency.
junit snippet:
Client interimClient = ClientBuilder.newClient();
WebTarget interim = interimClient.target(REST_TARGET_URL);
result persistedResult = interim.request()
.post(Entity.entity(testResult, MediaType.APPLICATION_JSON), Result.class);
Assert.assertEquals("A result should be persisted ", "TEST", persistedResult.getId());
Error:
java.lang.NoClassDefFoundError: org/apache/http/conn/ssl/X509HostnameVerifier
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.newInstance(Class.java:412)
at javax.ws.rs.client.FactoryFinder.newInstance(FactoryFinder.java:116)
at javax.ws.rs.client.FactoryFinder.find(FactoryFinder.java:164)
at javax.ws.rs.client.ClientBuilder.newBuilder(ClientBuilder.java:86)
I tried adding the dependency
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.0-alpha4</version>
</dependency>
...but then got
java.lang.NoClassDefFoundError: org/apache/http/conn/scheme/SchemeSocketFactory
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
Given that this was working just a couple hours earlier, following each successive dependency error seems like sliding down the rabbit hole. Hopefully this is a known jumping-off point that someone can help direct me on. tiy.

Answer 1

We were getting a similar error message when running JUnit tests. Our dependency versions are coming from org.wildfly:wildfly-parent:10.0.0.Final.
The initial error was:
java.lang.RuntimeException: java.lang.ClassNotFoundException: org.glassfish.jersey.client.JerseyClientBuilder
Adding the following dependency resolved the initial error
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-client</artifactId>
<scope>provided</scope>
</dependency>
We then received this second error:
java.lang.NoClassDefFoundError: org/apache/http/conn/ssl/X509HostnameVerifier
Adding the following dependency resolved the second (X509HostnameVerifier) error
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<scope>provided</scope>
</dependency>
Once these two dependencies were added the problem was resolved. The resteasy-client resolves to version 3.0.14.Final and the httpclient resolves to version 4.5 for org.wildfly:wildfly-parent:10.0.0.Final.

Answer 2

It appears that my smattering of jax-rs related dependencies somehow mutated into causing this error. I was able to get back into good standing after whittling them down into just the following:
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
</dependency>
<dependency>
<groupId>javax.ejb</groupId>
<artifactId>javax.ejb-api</artifactId>
</dependency>
<dependency>
<groupId>javax.annotation</groupId>
<artifactId>javax.annotation-api</artifactId>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-client</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jackson-provider</artifactId>
<scope>test</scope>
</dependency>