HelloSpringMVC注解版实现步骤解析

<build>
  <resources>
    <resource>
      <directory>src/main/java</directory>
      <includes>
        <include>**/*.properties</include>
        <include>**/*.xml</include>
      </includes>
      <filtering>false</filtering>
    </resource>
    <resource>
      <directory>src/main/resources</directory>
      <includes>
        <include>**/*.properties</include>
        <include>**/*.xml</include>
      </includes>
      <filtering>false</filtering>
    </resource>
  </resources>
</build>

<?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"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    https://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    https://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/mvc
    https://www.springframework.org/schema/mvc/spring-mvc.xsd">

  <!--自动扫描包 让指定包下的注解生效 由IOC容器统一管理-->
  <context:component-scan base-package="com.kuang.controller"/>

  <!--让spring mvc不处理静态资源 .css .js -->
  <mvc:default-servlet-handler/>

  <!--annotation-driven帮助我们自动完成handlermapper和adapter实例的注入-->
  <mvc:annotation-driven/>

  <!--视图解析器: 模版引擎 -->
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/"/>
    <property name="suffix" value=".jsp"/>
  </bean>
</beans>

@Controller
@RequestMapping("/hello")
public class HelloController {
  //真实访问地址：项目名/hello/h1
  @RequestMapping("/h1")
  public String Hello(Model model){
 
    model.addAttribute("msg","Hello SpringMVC annotation!");
    return "hello"; //会被视图解析器处理
  }
}