AdeveloperisdesigningawebapplicationwhichextensivelyusesEJBsandJMS.ThedeveloperfindsthatthereisalotofduplicatedcodetobuildtheJNDIcontextstoaccessthebeansandqueues.Further，becauseofthecomplexity，therearenumerouserrorsinthecode.WhichJ2EEdesignpatternprovidesasolutionforthisproblem？（）
A.Command
B.Transferobject
C.Servicelocator
D.SessionFaçade
E.Businessdelegate
F.Dataaccessobject