I have been struggling to get this to work and I think i can use some help. I am working on a Java project where the pom.xml has a bunch of dependencies some of which are themselves indirectly dependent on this jar:
com.sun.jersey:jersey-core:1.17.1
like this:
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>1.0.1</version>
</dependency>
And I need this particular jar in my pom because I want to use the new features in jax-rs api:
javax.ws.rs:javax.ws.rs-api:2.0
.The problem is when I build my project I get this error:
Found duplicate classes in [com.sun.jersey:jersey-core:1.17.1,javax.ws.rs:javax.ws.rs-api:2.0] :
[WARNING] javax.ws.rs.ApplicationPath
[WARNING] javax.ws.rs.Consumes
[WARNING] javax.ws.rs.CookieParam
[WARNING] javax.ws.rs.DELETE
[WARNING] javax.ws.rs.DefaultValue
[WARNING] javax.ws.rs.Encoded
[WARNING] javax.ws.rs.FormParam
[WARNING] javax.ws.rs.GET
[WARNING] javax.ws.rs.HEAD
[WARNING] javax.ws.rs.HeaderParam
...
..
I tried to fix this by excluding com.sun.jersey:jersey-core:1.17.1
from dependencies which were including it by checking the dependency tree.
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>1.0.1</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
</exclusion>
</exclusions>
</dependency>
Now the project builds fine but when I try to run it I get this error:
java.lang.NoClassDefFoundError: com/sun/jersey/core/util/FeaturesAndProperties
at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.7.0_51]
at java.lang.Class.privateGetDeclaredMethods(Class.java:2531) ~[na:1.7.0_51]
at java.lang.Class.getDeclaredMethods(Class.java:1855) ~[na:1.7.0_51]
at com.google.inject.internal.ProviderMethodsModule.getProviderMethods
(ProviderMethodsModule.java:81) ~[guice-3.0.jar:na]
at com.google.inject.internal.ProviderMethodsModule.configure
(ProviderMethodsModule.java:73) ~[guice-3.0.jar:na]
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
~[guice-3.0.jar:na]
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:232)
~[guice-3.0.jar:na]
at com.google.inject.spi.Elements.getElements(Elements.java:101) ~[guice-3.0.jar:na]
at com.google.inject.spi.Elements.getElements(Elements.java:92) ~[guice-3.0.jar:na]
It seems like jersey core was needed but how do I get around this problem?
You can't mix JAX-RS
/ Jersey
versions
Jersey
version 1 is the reference implementation for JAX-RS 1. Jersey
version 1 uses the com.sun.jersey
group / package prefix.
Jersey
version 2 is the reference implementation for JAX-RS 2. Jersey
version 2 uses the org.glassfish.jersey
group / package prefix
If you have both Jersey versions, or both JAX-RS versions on your classpath, you'll get lots of NoClassDefFoundError
, NoSuchMethodError
or similar.
If possible use JAX-RS
/ Jersey
version 2