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 :

    /customer/*.htm?action=add –> add() method    /customer/whatever.htm?action=add –> add() method    /customer/*.htm?action=update –> update() method    /customer/*.htm?action=delete –> delete() method    /customer/*.htm?action=list –> list() method

P.S the “*” means any text.

Note
By default, MultiActionController is used the InternalPathMethodNameResolver to map URL to the corresponds method name.