spring mvc: 参数方法名称解析器(用参数来解析控制器下的方法)MultiActionController/ParameterMethodNameResolver/ControllerClassNameHandlerMapping

spring mvc: 参数方法名称解析器(用参数来解析控制器下的方法)MultiActionController/ParameterMethodNameResolver/ControllerClassNameHandlerMapping

根据地址栏上的url的参数action来解析相应的控制器下的方法名，例如：

http://localhost:8080/项目名/user/index.html?action=remove

http://localhost:8080/项目名/user/*(可以是任意字符).html?action=remove

xml配置中会用到的类：

org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping
org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver　

java-controller中，会用到：

org.springframework.web.servlet.mvc.multiaction.MultiActionController;

　　

本例中用到了3个配置文件：web.xml, applicationContext, xxxx-servlet.xml

web.xml:

  <!--配置文件路径-->
<context-param>
 	<param-name>contextConfigLocation</param-name>
	<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>

<!-- 字符过滤器 -->
<filter>
   <filter-name>encodingFilter</filter-name>
   <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
   <init-param>
       <param-name>encoding</param-name>
       <param-value>UTF-8</param-value>
   </init-param>
</filter>
<filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping> 

<!-- 监听转发 -->
<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
					       http://www.springframework.org/schema/beans/spring-beans.xsd
					       http://www.springframework.org/schema/mvc
					       http://www.springframework.org/schema/mvc/spring-mvc.xsd
					       http://www.springframework.org/schema/context
					       http://www.springframework.org/schema/context/spring-context.xsd">

<!-- 默认：注解映射支持 -->
<mvc:annotation-driven/>
<!-- 静态资源配置 -->
<mvc:resources location="/pages/**" mapping="/pages/"/>

<!-- 自动扫描包名,controller -->
<context:component-scan base-package="springmvc"/>

</beans>

springmvc-servlet.xml

<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
					http://www.springframework.org/schema/beans/spring-beans.xsd
					http://www.springframework.org/schema/mvc
					http://www.springframework.org/schema/mvc/spring-mvc.xsd
					http://www.springframework.org/schema/context
					http://www.springframework.org/schema/context/spring-context.xsd">

<!-- ViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
	<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
	<property name="prefix" value="/WEB-INF/jsp/"/>
	<property name="suffix" value=".jsp"/>
</bean>

<!-- controller名解析 -->
<bean  class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">
	<property name="caseSensitive" value="true"/>
</bean>
<bean class="springmvc.UserController">
	<property name="methodNameResolver">
		<bean class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">
			<property name="paramName" value="action"/>
		</bean>
	</property>
</bean>

</beans>

　　

UserController.java代码

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 UserController extends MultiActionController {

	public ModelAndView home(HttpServletRequest request, HttpServletResponse response)
	{
		ModelAndView model = new ModelAndView("user_home");
		model.addObject("message", "home");
		return model;

	}

	public ModelAndView add(HttpServletRequest request, HttpServletResponse response)
	{
		ModelAndView model = new ModelAndView("user_add");
		model.addObject("message", "add");
		return model;

	}

	public ModelAndView remove(HttpServletRequest request, HttpServletResponse response)
	{
		ModelAndView model = new ModelAndView("user_remove");
		model.addObject("message", "remove");
		return model;

	}

}

　　

jsp代码，大同小异:

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ page isELIgnored="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>home</title>
</head>
<body>

hi,${message}

</body>
</html>