首先导包，用的3.1.0.m包。。之前有个帖子说了这个版本的包的介绍

我就不管三七二十二了，全放进去了

然后就是web.xml配置，主要是配置spring容器

        <!-- 加载spring容器，
        因为后面要加filter，并且注入bean所以用listener加载容器
        因为在web.xml中会涉及到加载顺序导致filter注入bean的时候出异常
        web.xml中加载顺序 context-param -> listener -> filter -> servlet
         -->
        <listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/demo.xml</param-value>
	</context-param>                    

        <!-- 拦截所有.do请求交由spring的servlet分发(不知道是不是可以这么说) -->
	<servlet>
		<servlet-name>springContent</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/demo.xml</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>springContent</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>

然后就是配置spring容器配置文件demo.xml

比较麻烦的是头，这个很关键，我偷懒了，直接全加载了，用的eclipse的spring插件生成，当然牛B的也可以纯手写

<?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:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
	xmlns:jee="http://www.springframework.org/schema/jee" xmlns:jms="http://www.springframework.org/schema/jms"
	xmlns:lang="http://www.springframework.org/schema/lang" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:oxm="http://www.springframework.org/schema/oxm" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:task="http://www.springframework.org/schema/task" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
		http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
		http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms-3.1.xsd
		http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-3.1.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
		http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd">

	<!-- 这里的映射有好几种方式，我用顺手的是这个 -->
	<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
		<property name="mappings">
			<props>
				<!-- 把具体请求映射到具体controller的id -->
				<prop key="index.do">demo_index</prop>
			</props>
		</property>
	</bean>
	
	<!-- controller要实现controller的handleRequest方法 -->
	<bean id="demo_index" class="com.netel.web.Demo_index"/>
	
</beans>

然后是Demo_index这个controller

package com.netel.web;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class Demo_index implements Controller{

	@Override
	public ModelAndView handleRequest(HttpServletRequest arg0, HttpServletResponse arg1) throws Exception {
		ModelAndView v = new ModelAndView("index.jsp");
		System.out.println("进入controller");
		return v;
	}

}

结果eclipse报错，说httpservietrequest之类的找不到包，我又偷懒在tomcat的lib下找了个servlet-api.jar导入，完事

发布运行，报错。。干脆利落

java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:415)
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
	at org.springframework.web.SpringServletContainerInitializer.<clinit>(SpringServletContainerInitializer.java:104)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:264)
	at org.apache.catalina.startup.ContextConfig.getServletContainerInitializer(ContextConfig.java:1409)
	at org.apache.catalina.startup.ContextConfig.processServletContainerInitializers(ContextConfig.java:1328)
	at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1226)
	at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:313)
	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:89)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4667)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:988)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:771)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:988)
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:275)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:427)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:649)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:585)
	... 6 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1666)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
	... 29 more

大概是说logfactory找不到，好么，找个commons-logging-1.1.1.jar放入，运行OK.