上一篇完成了Maven web项目的搭建，本篇在其基础上改造为Spring MVC项目，这一步骤比较简单。为了使配置看起来简单清晰，仅添加了最基础的依赖包。

1 修改pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><groupId>demo.maven.web</groupId><artifactId>maven-springmvc-demo</artifactId><packaging>war</packaging><version>0.0.1-SNAPSHOT</version><name>maven-springmvc-demo Maven Webapp</name><url>http://maven.apache.org</url><dependencies><dependency><groupId>javax</groupId><artifactId>javaee-web-api</artifactId><version>7.0</version><scope>provided</scope></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>3.1.1.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>3.1.1.RELEASE</version></dependency></dependencies><build><finalName>maven-springmvc-demo</finalName><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>2.3.2</version><configuration><source>1.8</source><target>1.8</target></configuration></plugin></plugins></build>
</project>

2 修改/src/main/webapps/WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"version="3.0"><display-name>Servlet 3.0 Web Application</display-name><servlet><servlet-name>dispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:dispatcherServlet-servlet.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>dispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping>
</web-app>

3 创建dispatcherServlet-servlet.xml

/src/main/resources

<?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"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsd"><context:component-scan base-package="demo.controller" /><bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"><property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /><property name="prefix" value="/WEB-INF/jsp/" /><property name="suffix" value=".jsp" /></bean>
</beans>

4 添加Controller

/scr/main/java/demo/controller/WelcomeController.java

package demo.controller;import java.io.IOException;import javax.servlet.http.HttpServletResponse;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;@Controller
public class WelcomeController {@RequestMapping("/welcome")public void welcome(HttpServletResponse resp) throws IOException {resp.getWriter().println("Hello, world!");}
}

5 运行