SpringMVC的开发步骤

1.导入SpringMVC坐标

2.配置Servlet，即配置SpringMVC的前端控制器DispathcerServlet

3.编写POJO(控制器Controller)，即创建Controller类和视图

4.通过注解将控制器配置到Spring容器中(@Controller)，配置Controller类中业务方法的映射地址

5.配置组件扫描(spring-mvc.xml)，即配置SpringMVC核心配置文件

6.客户端发起请求测试

首先，导入SpringMVC的坐标

        <!--导入SpringMVC的坐标-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.3</version>
        </dependency>

然后，配置SpringMVC的前端控制器

    <!--配置SpringMVC的前端控制器-->
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

接着创建Controller和业务方法，并配置注解

//创建Controller和业务方法，并配置注解
@Controller
public class UserController {

    @RequestMapping("/save")
    public String save(){
        System.out.println("Save running");
        return "success.jsp";
    }
}

最后，创建SpringMVC的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       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">
        <!--配置Controller的组件扫描-->
        <context:component-scan base-package="com.test.controller"></context:component-scan>
</beans>

SpringMVC的执行流程