SpringMVC环境搭建之Idea

SpringMVC
一.. SpringMVC重要组件介绍
1. DispacherServlet：前端控制器，接收所有请求，(如果配置/不包含jsp)
2. HandlerMapping：解析请求格式，判断希望要执行哪个方法
3. HandlerAdapter：负责调用具体的方法
4. ViewResovler：视图解析器，解析结果，准备跳转的具体的视图

spring的jar包官方下载地址：

https://repo.spring.io/libs-release-local/org/springframework/spring/
二. 环境搭建
1.导入jar包
2.在web.xml中配置前端控制器，若不配置<init-param>，会去/web-inf/<servlet-name>servlet.xml找
<servlet>
<servlet-name>qq</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>qq</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
3.src下面新建springmvc.xml
3.1.引入命名空间
<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
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.bj.controller"></context:component-scan>

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

<mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
<mvc:resources mapping="/css/**" location="/css/"></mvc:resources>
<mvc:resources mapping="/imgs/**" location="/imgs/"></mvc:resources>
</beans>
3.2.编写控制器类

1 @Controller
2 public class Democontroller {
3 @RequestMapping("demo")
4      public String demo(){
5         return "main.jsp";
6     }
7 
8 }

SpringMVC环境搭建之Idea

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