1，打开IDEA，新建Maven项目【使用web模板创建】

使用社区版的同学创建普通的maven项目，并配置项目的webapp，详情可参考 快速创建一个SpringMVC项目（IDEA）

2，在main目录下创建Java和resource目录

3，在resource目录下创建spring-mvc.xml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:context="http://www.springframework.org/schema/context"xmlns:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttps://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/mvchttps://www.springframework.org/schema/mvc/spring-mvc.xsd"><!--采用注解驱动--><mvc:annotation-driven/><!--扫描控制器--><context:component-scan base-package="org.example.controller"/><!--定义内部资源视图解析器：负责解析控制器里从逻辑视图到物理页面的映射--><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/><property name="prefix" value="/WEB-INF/views/"/> <!--路径--><property name="suffix" value=".jsp"/> <!--扩展名--></bean>
</beans>

4，修改web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaeehttp://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"version="4.0"><!--设置启动首页--><welcome-file-list><welcome-file>/index.jsp</welcome-file></welcome-file-list><!--Spring容器加载监听器，让Spring随着Web项目启动而初始化--><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!--指定Spring配置文件位置--><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring-mvc.xml</param-value></context-param><!--注册Spring前端控制器，加载Spring MVC配置文件--><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:spring-mvc.xml</param-value></init-param><load-on-startup>1</load-on-startup> <!--数字越小，启动级别越高--></servlet><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>/</url-pattern>  <!--“/”表明拦截一切请求--></servlet-mapping><!--设置字符编码过滤器--><filter><filter-name>Character Encoding</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>Character Encoding</filter-name><url-pattern>/*</url-pattern> <!--/*表明过滤一切请求--></filter-mapping>
</web-app>

5，配置tomcat

6，编写一个测试controller

IndexController

@Controller
public class IndexController {@RequestMapping(value = "/hello",method = RequestMethod.GET)@ResponseBodypublic String hello() {return "hello";}}

访问 http://localhost:8080/hello

ok