Openmrs workflow (1)where to find

1) based on the the suffix of the target, find the fliter from Web.xml
example:
target:module.list
step 1)
in web.xml:

openmrs
*.list

step 2)
now come to the openmrs-servlet.xml:
moduleListController

step 3)
in the same file, we find:
class="org.openmrs.module.web.controller.ModuleListController">
moduleList
/admin/modules/moduleList
module.list

then we know the target servlet.