Spring MVC ParameterMethodNameResolver example

ParameterMethodNameResolver, a MultiActionController method name resolver to map URL to method name via request parameter name, and the parameter name is customizable through the “paramName” property. See following example :

1. MultiActionController

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");
					
	}
	
}

2. ParameterMethodNameResolver

With ParameterMethodNameResolver configured, and define the parameter name thought the “paramName” property:

<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.ParameterMethodNameResolver">
	   <property name="paramName" value="action"/>
	</bean>
     </property>
   </bean>

</beans>

Now, the URL will map to the method name via the “action” request parameter name :

1. /customer/*.htm?action=add –> add() method
2. /customer/whatever.htm?action=add –> add() method
3. /customer/*.htm?action=update –> update() method
4. /customer/*.htm?action=delete –> delete() method
5. /customer/*.htm?action=list –> list() method

P.S the “*” means any text.

Download Source Code

Reference

1. ParameterMethodNameResolver Javadoc
2. Spring MVC MultiActionController example