1. Create project / module

New empty project:springMvcStudy
New module: type Maven webapp, name mvcStudy

2. Set Sources and Resources for module

Create two new folders under mvcStudy/src/main: java,resources
Open File/Project Structure/Project Settings/Modules, select mvcStudy, and click the Sources tab
Set the java folder to Sources and the Resources to Resources

3. Modify pom and add dependency:

 1 <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
 2     <dependency>
 3       <groupId>org.springframework</groupId>
 4       <artifactId>spring-core</artifactId>
 5       <version>5.0.9.RELEASE</version>
 6     </dependency>
 7     <dependency>
 8       <groupId>org.springframework</groupId>
 9       <artifactId>spring-context</artifactId>
10       <version>5.0.9.RELEASE</version>
11     </dependency>
12     <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
13     <dependency>
14       <groupId>org.springframework</groupId>
15       <artifactId>spring-beans</artifactId>
16       <version>5.0.9.RELEASE</version>
17     </dependency>
18     <!-- https://mvnrepository.com/artifact/org.springframework/spring-expression -->
19     <dependency>
20       <groupId>org.springframework</groupId>
21       <artifactId>spring-expression</artifactId>
22       <version>5.0.9.RELEASE</version>
23     </dependency>
24 
25     <dependency>
26       <groupId>org.springframework</groupId>
27       <artifactId>spring-web</artifactId>
28       <version>5.0.9.RELEASE</version>
29     </dependency>
30     <dependency>
31       <groupId>org.springframework</groupId>
32       <artifactId>spring-webmvc</artifactId>
33       <version>5.0.9.RELEASE</version>
34     </dependency>
35     <dependency>
36       <groupId>org.springframework</groupId>
37       <artifactId>spring-aop</artifactId>
38       <version>5.0.9.RELEASE</version>
39     </dependency>

4.Web.xml: add spring MVC configuration

 1   <!--configure the setting of springmvcDispatcherServlet and configure the mapping-->
 2   <servlet>
 3       <servlet-name>springmvc</servlet-name>
 4       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 5       <init-param>
 6             <param-name>contextConfigLocation</param-name>
 7             <param-value>classpath:springmvc-config.xml</param-value>
 8         </init-param>
 9         <!-- <load-on-startup>1</load-on-startup> -->
10   </servlet>
11 
12   <servlet-mapping>
13       <servlet-name>springmvc</servlet-name>
14       <url-pattern>/</url-pattern>
15   </servlet-mapping>

5. Create springmvc-config.xml in the resources file, as follows:

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xmlns:context="http://www.springframework.org/schema/context"
 5        xmlns:mvc="http://www.springframework.org/schema/mvc"
 6        xsi:schemaLocation="http://www.springframework.org/schema/beans
 7         http://www.springframework.org/schema/beans/spring-beans.xsd
 8         http://www.springframework.org/schema/context
 9         http://www.springframework.org/schema/context/spring-context.xsd
10         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
11         ">
12     <!--Pay attention to configuration xsd,Or report a mistake:Wildcard matching is comprehensive, Element not found 'context:component-scan' Statement of.-->
13 
14     <context:component-scan base-package="com.ice"/>
15     <!-- don't handle the static resource -->
16     <mvc:default-servlet-handler />
17     <mvc:annotation-driven/>
18 
19     <!-- configure the InternalResourceViewResolver -->
20     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
21           id="internalResourceViewResolver">
22         <!-- prefix -->
23         <property name="prefix" value="/WEB-INF/jsp/" />
24         <!-- Suffix -->
25         <property name="suffix" value=".jsp" />
26     </bean>
27 
28 </beans>

6. Create package, class

Base package = "com. Ice" defined above
Therefore, create package com.ice.controller; the test class is as follows:

 1 package com.ice.controller;
 2 
 3 import org.springframework.stereotype.Controller;
 4 import org.springframework.web.bind.annotation.RequestMapping;
 5 
 6 @RequestMapping("/")
 7 @Controller
 8 public class HomeController {
 9     @RequestMapping("/")
10     public String index(){
11         return "index";
12     }
13 }

7. Confirm that there is an index.jsp file under WEB-INF/jsp

8. Release tomcat

Click Run - > run, select edit configure, click green '+', and add Tomcat server -- local,
a. Click the server tab: configure the application server as the local tomcat server
b. Click the deployment tab: click green '+', select artifact.., select the mode war expanded (automatically update to tomcat after modifying the file)
war mode: upload WEB project to the server in the form of package;
War expanded mode: upload the WEB project to the server with the location relationship of the current folder;
c. Click the server tab: VM options: the drop-down below can be changed to update resources

9. Operation

Click run to automatically access http://localhost:port/
Display the contents of index.jsp: hello world