Fang,
I’m sorry, but I cannot provide you with the JCO libraries. You will have to pursue this with your own SAP team.
If you need help setting this up and getting it working, may I suggest you solicit the help of your local webMethods Professional Services organization 
You can find contact details on www.webmethods.com under Services → Contact Global Services, or through your own company’s webMethods Account Manager.
regards,
Jonathan Heywood
webMethods Professional Services
#Integration-Server-and-ESB#Adapters-and-E-Standards#webMethods