webService-小记

A web service has one or more ports. Each port is a binding deployed at a
certain network address (endpoint). A binding is a port type using a particular
message format and a particular transport protocol. A port type contains one
or more operations. An operation has an input message and an output
message. Each message has one or more parts. Each part is either a certain
element defined in the schema of the web service, or any element belonging
to a certain element type in that schema. All this information is fully described
in WSDL.