一：新建web工程，spring001

忽略

二：添加springframework依赖jar包

将dist下的jar全部加进去 然后另加一个commons-logging.jar

三：修改web.xml

<servlet>  
    <servlet-name>springMVC</servlet-name>  
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
    <init-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>/WEB-INF/config/springMVC.xml</param-value>  
    </init-param>  
    <load-on-startup>1</load-on-startup>  
</servlet>  
  
<servlet-mapping>  
    <servlet-name>springMVC</servlet-name>  
    <url-pattern>/</url-pattern>  
</servlet-mapping>

默认DispatcherServlet会加载WEB-INF/[DispatcherServlet的Servlet名字]-servlet.xml配置文件， 本示例为WEB-INF/springMVC-servlet.xml 默认路径为WEB-INF下,也可修改为如下配置

<init-param>  
    <param-name>contextConfigLocation</param-name>  
    <!-- <param-value>classpath:conf/springMVC.xml</param-value>  -->  
    <!-- <param-value>classpath:/conf/springMVC.xml</param-value> -->  
    <!-- <param-value>classpath*:/conf/springMVC.xml</param-value>  -->  
    <!-- 以上三种形式也可以 -->  
    <param-value>classpath:conf/springMVC.xml</param-value>  
</init-param>

四：添加springMVC配置文件

<?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:p="http://www.springframework.org/schema/p"  
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
    default-lazy-init="true"  
    xsi:schemaLocation="    
    http://www.springframework.org/schema/beans     
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd    
    http://www.springframework.org/schema/context    
    http://www.springframework.org/schema/context/spring-context-3.0.xsd    
    http://www.springframework.org/schema/mvc    
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd    
    ">  
  
    <!-- 默认扫描的包路径 -->  
    <context:component-scan base-package="com.itmyhome" />  
  
    <!-- 添加注解驱动 -->  
    <mvc:annotation-driven />  
  
    <!-- 定义跳转的文件的前后缀 -->  
    <bean id="viewResolver"  
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <property name="prefix" value="/" />  <!-- 默认放在WebRoot下 -->  
        <property name="suffix" value=".jsp" />   
    </bean>  
</beans>

PS:<context:component-scan base-package="com.itmyhome" /> base-package后的内容只是包路径，千万不能把类名也写出来 比如com.itmyhome.Login 否则会报如下错误 警告: No mapping found for HTTP request with URI [/spring001/login] in DispatcherServlet with name ‘springMVC’

五：后台Action

package com.itmyhome;  
  
import org.springframework.stereotype.Controller;  
import org.springframework.web.bind.annotation.RequestMapping;  
  
@Controller  
public class Login {  
  
    @RequestMapping(value="login")  
    public String login(){  
        System.out.println("*******已经进入*********");  
        return "welcome";  //即返回welcome.jsp  
    }  
}

六：返回JSP

新建welcome.jsp 里面随便写点内容 如：Hello springMVC! 最后在浏览器中输入地址 验证 如图：

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工程目录如下：

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