Spring MVC MultiActionController

In Spring MVC application, MultiActionController is used to group related actions into a single controller, the method handler have to follow below signature :

public (ModelAndView | Map | String | void) actionName(     HttpServletRequest, HttpServletResponse [,HttpSession] [,CommandObject]);

1. MultiActionController

See a MultiActionController example.
package com.mkyong.common.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
public class CustomerController extends MultiActionController{
public ModelAndView add(HttpServletRequest request, HttpServletResponse response) throws Exception {
return new ModelAndView("CustomerPage", "msg","add() method");
}

public ModelAndView delete(HttpServletRequest request,HttpServletResponse response) throws Exception {                  
    return new ModelAndView("CustomerPage", "msg","delete() method");                       
}       

public ModelAndView update(HttpServletRequest request,HttpServletResponse response) throws Exception {                  
    return new ModelAndView("CustomerPage", "msg","update() method");                     
}       

public ModelAndView list(HttpServletRequest request,HttpServletResponse response) throws Exception {                        
    return new ModelAndView("CustomerPage", "msg","list() method");                       
}   

}

With **`ControllerClassNameHandlerMapping`** configured.

<beans ...>
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />
<bean class="com.mkyong.common.controller.CustomerController" />
</beans>

##2. Mapping Examples
Now, the reuqested URL will map to the method name in the following patterns :

CustomerController –> /customer/*
/customer/add.htm –> add()
/customer/delete.htm –> delete()
/customer/update.htm –> update()
/customer/list.htm –> list()

##3. InternalPathMethodNameResolver
The `InternalPathMethodNameResolver` is the default **`MultiActionController`** implementation to map URL to method name. But, you are still allow to add prefix or suffix to the method name :

<beans ...>
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />
<bean class="com.mkyong.common.controller.CustomerController">
<property name="methodNameResolver">
<bean class="org.springframework.web.servlet.mvc.multiaction.InternalPathMethodNameResolver">
<property name="prefix" value="test" />
<property name="suffix" value="Customer" />
</bean>
</property>
</bean>
</beans>

Now, the URL will map to the method name in the following pattern :

CustomerController –> /customer/*
/customer/add.htm –> testaddCustomer()
/customer/delete.htm –> testdeleteCustomer()
/customer/update.htm –> testupdateCustomer()
/customer/list.htm –> testlistCustomer()