deploy jpa+jaxws+jsf on NWCE7.1sp3

deploy warnings as following.

the default jsp page run all right, but the others didn't.

anybody help?

--- Deploying file(s):
	E:workspaces_ceMBLMEARMBLMEAR.ear

--- Status:
	Deploy finished with warnings.

--- Description:
	
		  S U M M A R Y
~~~~~~~~~~~~~~~~~~~

Successfully deployed:	      0

Deployed with warnings:	      1

Failed deployments:		      0

~~~~~~~~~~~~~~~~~~~

1. File:E:workspaces_ceMBLMEARMBLMEAR.ear
	Name:MBLMEAR
	Vendor:sap.com
	Location:localhost
	Version:2007.12.05.14.53.27
	Deploy status:Warning
	Version:HIGHER

	Description:
		1. Warning occurred on server 44605250 during update sap.com/MBLMEAR : Web Class Existence Test: The servlet "demo.ws.MBLM" must implement "javax.servlet.Servlet"., file: MBLM.war#WEB-INF/web.xml, column 0, line 0, severity: warning
		2. Warning exception has been returned while the 'sap.com/MBLMEAR' was starting. Warnings:

Warning occurred on server 44605250 during startApp sap.com/MBLMEAR : Error occurred while trying to inject naming resources in the following [Servlet] class [demo.ws.MBLM]. Error is: [com.sap.engine.lib.injection.InjectionException: Injection on field emf of instance demo.ws.MBLM@18c4d9c failed. Could not get a value to be injected from the factory.].

Result
Status:Warning