First, create a Module module

Second, write the following code in the POM.xml file:

<packaging>war</packaging>

<dependencies>
    <!-- SpringMVC -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.3.1</version>
    </dependency>
         <! - log ->
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.2.3</version>
    </dependency>
    <!-- ServletAPI -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>

        <scope>provided</scope>
    </dependency>
         <! - Spring5 and thymeleaf integration package ->
    <dependency>
        <groupId>org.thymeleaf</groupId>
        <artifactId>thymeleaf-spring5</artifactId>
        <version>3.0.12.RELEASE</version>
    </dependency>
</dependencies>

Third, refresh the Maven

Create a web file and see XML configuration file


Fourth, the following configuration is made in the web.xml file:

      <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.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>

5. The following configuration is made in the SpringMVC.xml file under the resource package:

<?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”
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.xsd”

Scanning component
Context components need to be configured in Beans, such as XMLns: context = "http://www.springframework.org/schema/context, do not remember to configure
<context:component-scan base-package=“com.atguigu.mvc.controller”></context:component-scan
Configure the Thymeleaf view parser
<bean id=“viewResolver”
class=“org.thymeleaf.spring5.view.ThymeleafViewResolver”
<property name=“order” value=“1”/
<property name=“characterEncoding” value=“UTF-8”/
<property name=“templateEngine”
<bean class=“org.thymeleaf.spring5.SpringTemplateEngine”
<property name=“templateResolver”
<bean
class=“org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver”

<property name=“prefix” value=”/WEB-INF/templates/"/

<property name=“suffix” value=".html"/
<property name=“templateMode” value=“HTML5”/
<property name=“characterEncoding” value=“UTF-8” /
</bean
</property
</bean

    /property
/bean

/beans

The above code has some questions on parentheses, the format is not good, remember to change it.

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Such an environment is a good, you can create a class in Java for testing:

Create INDEX.html in the Templates under WebAPP under WebApp, why is it in Templates under WebApp?
Because you are configured with the following path in SpringMvc.xml: