环境：win10
工具：idea 2021.3.2
tomcat：apache-tomcat-8.5.77
jdk： jdk-11.0.14
1.整体目录
2.HelloController
@Controller @RequestMapping("/hi") public class HelloController { @RequestMapping("/hello") public String hello(Model model){ model.addAttribute("msg","Hello SpringMVC!"); return "hello"; } }
3.springmvc-servlet.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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <!--扫描包下的注解--> <context:component-scan base-package="com.sk.controller"/> <!--在springmvc-servlet.xml中配置<mvc:default-servlet-handler />后， 会在Spring MVC上下文中定义一个org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler， 它会像一个检查员，对进入DispatcherServlet的URL进行筛查， 如果发现是静态资源的请求， 就将该请求转由Web应用服务器默认的Servlet处理， 如果不是静态资源的请求，才由DispatcherServlet继续处理。--> <!--静态页面，如html,css,js,images可以访问--> <mvc:default-servlet-handler/> <!--Spring 3.0.x中使用了mvc:annotation-driven后， 默认会帮我们注册默认处理请求，参数和返回值的类， 其中最主要的两个类：DefaultAnnotationHandlerMapping 和 AnnotationMethodHandlerAdapter ， 分别为HandlerMapping的实现类和HandlerAdapter的实现类， 从3.1.x版本开始对应实现类改为了RequestMappingHandlerMapping和RequestMappingHandlerAdapter。--> <!--注解驱动，以使得访问路径与方法的匹配可以通过注解配置--> <mvc:annotation-driven/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> </beans>
4.web.xml
<?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/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc-servlet.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> </web-app>
5.hello.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> ${msg} </body> </html>
6.pom文件
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.3.16</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.3.16</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.3.17</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.3.16</version>
</dependency>
7.访问路径
http://localhost:8080/hi/hello
