一、SpringMVC简介

1、SpringMVC中重要组件

1.1 DispatcheServlet:前端控制器，接收所有请求（如果配置/不包含jsp）；

1.2 HandlerMapping:解析请求格式的。判断希望要执行那个具体的方法；

1.3 HandlerAdapter:负责调用具体的方法；

1.4 ViewResovler:视图解析器。解析结果，准备跳转到具体的物理视图。

2、SpingMVC运行原理图

SpringMVC注解方式配置

二、SpringMVC环境搭建

1、导入jar

SpringMVC注解方式配置

2、在web.xml中配置前端控制器DispatcherServlet、字符编码过滤器CharacterEncodingFilter

<servlet>
       <servlet-name>demo</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>demo</servlet-name>
       <url-pattern>/</url-pattern>
   </servlet-mapping>

<filter>
       <filter-name>encoding</filter-name>
       <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
       <init-param>
           <param-name>encoding</param-name>
           <param-value>utf-8</param-value>
       </init-param>
   </filter>
   <filter-mapping>
       <filter-name>encoding</filter-name>
       <url-pattern>/*</url-pattern>
   </filter-mapping>

3、在src下新建springmvc.xml，引入xmlns:mvc命名空间

<?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/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">

<context:component-scan base-package="com.gzz.controller"></context:component-scan>


<mvc:annotation-driven></mvc:annotation-driven>


   <mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
   <mvc:resources location="/css/" mapping="/css/**"></mvc:resources>
   <mvc:resources location="/images/" mapping="/images/**"></mvc:resources>

   
   <bean id="ViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       <property name="prefix" value="/"></property>
       <property name="suffix" value=""></property>
   </bean>
</beans>

4、新建jsp文件：index.jsp，main.jsp（位置为WEB-INF）

index.jsp:

main.jsp

5、编写控制器类（在src下建包名为com.gzz.controller，在包下建类名为DemoController）

@Controller
public class DemoController {

   @RequestMapping("demo")
   public String demo(String name,int age){
       return "main.jsp";
   }

}

SpringMVC注解方式配置

一、SpringMVC简介

二、SpringMVC环境搭建

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