[CXF-8604] CXF warning logs: equal candidates for handling the request which can lead to unpredictable results

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Bug
• Affects Version/s: 3.4.3
• Component/s: JAX-RS
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: Mike Mozaffari
• Created: 07/Oct/21 03:04
• Updated: 07/Oct/21 06:30
• Resolved: 07/Oct/21 06:30

Description

I have the following GET method:

    @GET
    @Produces("application/json")
    @Path("getpoolinfo")
    public String getPoolInfo(@QueryParam("userid") int userid) {
        return requestHandler.getPoolList(userid);
    }

In the logs I see a lot of warning messages:

    2021-10-06 20:27:37,860 WARN  [qtp1072377306-76] [JAXRSUtils] Both 
    com.package.name.ClassName#getPoolInfo and 
    com.package.name.ClassName#getPoolInfo 
    are equal candidates for handling the current request which can lead to unpredictable results

Please note that it is pointing to the same method of the same class.

I am using the following libraries of CXF:

<dependency>
	<groupId>org.apache.cxf</groupId>
	<artifactId>cxf-rt-frontend-jaxrs</artifactId>
	<version>3.4.3</version>
</dependency>
<dependency>
	<groupId>org.apache.cxf</groupId>
	<artifactId>cxf-rt-transports-http-jetty</artifactId>
	<version>3.4.3</version>
</dependency>

I am using the following code to create the server:

JAXRSServerFactoryBean sf = new JAXRSServerFactoryBean();
sf.setResourceClasses(MyClass.class);
sf.setResourceProvider(MyClass.class, new SingletonResourceProvider(new MyClass()));

It seems setResourceClasses and setResourceProvider causes a duplicate in class resource info, which causes the warning.