第一、
引入jar包

第二、
web.xml 文件修改

<servlet>
      <servlet-name>springDispatcherServlet</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <!-- 配置Spring MVC 下的配置文件的位置和名称 -->
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:springmvc.xml</param-value>
      </init-param>
      <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
      <servlet-name>springDispatcherServlet</servlet-name>
      <url-pattern>/</url-pattern>
  </servlet-mapping>

第三、
写controller

@Controller
@RequestMapping("/lp")
public class HelloWorld {
    
    @RequestMapping("/he")
    @ResponseBody
    public Map<String,String> show(){
        Map<String,String> map = new HashMap<String,String>();
        map.put("1", "2");
        map.put("2", "2");
        map.put("3", "2");
        map.put("4", "2");
        map.put("5", "2");
        map.put("6", "2");
        return map;
    }
}

第四、
编写springmvc.xml

<?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/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
        
        <mvc:annotation-driven />
        <!-- 注意：当springMVC-servlet.xml中使用<mvc:annotation-driven />时，如果是3.1之前已经默认注入AnnotationMethodHandlerAdapter，3.1之后默认注入RequestMappingHandlerAdapter只需加上上面提及的jar包即可! -->
        <!-- 配置自动扫描的包 -->
        <context:component-scan base-package="com.lium"></context:component-scan>
        
        <!-- 配置视图解析器 如何把handler 方法返回值解析为实际的物理视图 -->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name = "prefix" value="/WEB-INF/views/"></property>
            <property name = "suffix" value = ".jsp"></property>
        </bean>
</beans>

另：目录结构