SpringMVC框架搭建（idea2021.3.2）

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