About packages

Packages

The package element has one required attribute, name, which acts as the key for later reference to the package. The extends attribute is optional and allows one package to inherit the configuration of one or more previous packages - including all interceptor, interceptor-stack, and action configurations.

 (warning) Note that the configuration file is processed sequentially down the document, so the package referenced by an "extends" should be defined above the package which extends it.
The optional abstract attribute creates a base package that can omit the action configuration.
Attribute Required Description
name yes key to for other packages to reference
extends no inherits package behavior of the package it extends
namespace no see Namespace Configuration
abstract no declares package to be abstract (no action configurations required in package)

Simple usage

Package Example (struts.xml)
<struts>
  <package name="employee" extends="struts-default" namespace="/employee">
    <default-interceptor-ref name="crudStack"/>
    <action name="list" method="list"
      class="org.apache.struts2.showcase.action.EmployeeAction" >
        <result>/empmanager/listEmployees.jsp</result>
        <interceptor-ref name="basicStack"/>
    </action>
    <action name="edit-*" class="org.apache.struts2.showcase.action.EmployeeAction">
      <param name="empId">{1}</param>
      <result>/empmanager/editEmployee.jsp</result>
        <interceptor-ref name="crudStack">
          <param name="validation.excludeMethods">execute</param>
        </interceptor-ref>
      </action>
      <action name="save" method="save"
          class="org.apache.struts2.showcase.action.EmployeeAction" >
        <result name="input">/empmanager/editEmployee.jsp</result>
        <result type="redirect">edit-${currentEmployee.empId}.action</result>
      </action>
      <action name="delete" method="delete"
        class="org.apache.struts2.showcase.action.EmployeeAction" >
        <result name="error">/empmanager/editEmployee.jsp</result>
        <result type="redirect">edit-${currentEmployee.empId}.action</result>
      </action>
  </package>
</struts>

Inherit from more than one package

Multi package Example (struts.xml)
<struts>
  <package name="employee" extends="struts-default, json-default" namespace="/employee">
    <action name="list" method="list" class="org.apache.struts2.showcase.action.EmployeeAction" >
        <result>/empmanager/listEmployees.jsp</result>
        <result type="json">
            <param name="root">employees</param>
        </result>
    </action>
  </package>
</struts>