springmvc-框架提供的三種處理器映射組件

<?xml version="1.0" encoding="UTF-8"?>
<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"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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 
                        http://www.springframework.org/schema/aop 
                        http://www.springframework.org/schema/aop/spring-aop.xsd 
                        http://www.springframework.org/schema/tx 
                        http://www.springframework.org/schema/tx/spring-tx.xsd ">
    <!-- 按照bean的名稱進行訪問：默認的處理器映射 -->
    <bean id="beanNameHandlerMapping"  class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">
        <property name="order" value="1"/>
    </bean>
    <!-- 簡單url處理器映射組件：SimpleURLHandlerMapping -->
    <bean id="simpleUrlHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/a.do">userController</prop>
                <prop key="/b.do">userController</prop>
                <prop key="/c.do">userController</prop>
            </props>
        </property>
        <property name="order" value="2"/>
    </bean>
    <!-- 控制器類名處理器映射ControllerClassNameHandlerMapping -->
    <bean id="controllerClassNameHandlerMapping" class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">
        <property name="order" value="3"/>
    </bean>
    <!-- 註冊自定義的控制器，並經過name屬性指定的值進行訪問 -->
    <bean id="userController" name="/save.do" class="cn.internet.controller.UserController"></bean>
    <!-- 視圖解析器 -->
    <bean name="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 經過setter方法注入前綴和後綴 -->
        <!-- 注入前綴 -->
        <property name="prefix" value="/jsps/"></property>
        <!-- 注入後綴 -->
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>