How to load the underlying server in combination with tapestry and spring

When using the Spring framework, you must load the corresponding underlying service on each page,
When using tapestry and spring in combination, the engine class must support:
Add the following method to the myengine file:

Protected void setupforrequest (requestcontext context ){
Super. setupforrequest (context );
// Insert applicationcontext in global, if not there
Map global = (MAP) getglobal ();
Applicationcontext AC = (applicationcontext) Global. Get ("appcontext ");
If (AC = NULL ){
AC = webapplicationcontextutils. getwebapplicationcontext (
Context. getservlet (). getservletcontext ()
);
Global. Put ("appcontext", AC );
}
}

Then use the following statement in the page file:

<Property-specification name = "list" type = "datalist">
Global. appcontext. getbean ("tablesource ")
</Property-Specification>

If the name is list, the static method corresponding to the Java file must be
Public abstract treedao getlist ();