I need to include more than one WSDL in my Maven JAXWS configuration and I need to specify different output directories for them since some of the method names in wsdlA conflict
The first thing is not to configure the configuration within the pluginManagement block. In this case it's better to define the version of the plugin only in the pluginManagement block. Furthermore to fulfill your requirement you need to have two executions like this:
    
    org.jvnet.jax-ws-commons  
    jaxws-maven-plugin  
    
         
            wsdla-exec 
             
            wsimport  
             
            
                com.mycee.project.model  
                
                    ${basedir}/src/jaxws/wsdl/wsdla.wsdl 
                 
                ${basedir}/src/jaxws/binding 
                true 
             
          
         
            wsdlb-exec 
             
            wsimport  
             
            
                com.mycee.project.model  
                
                    ${basedir}/src/jaxws/wsdl/wsdlb.wsdl 
                 
                ${basedir}/src/jaxws/binding 
                true