java web spring challenge01

首先导入 spring全家桶 jar包 友情链接https://repo.spring.io/release/org/springframework/spring/

建立工程

工程结构如上

最重要的是web.xml

config.xml

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>springt</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/config.xml</param-value>
</context-param>
<servlet>
<servlet-name>HelloControll</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 可选,默认路径/WEB-INF/[servlet-name]-servlet.xml 可以不用配置。 否则，必须指定 -->

<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>HelloControll</servlet-name>
<!-- url-pattern：表示哪些请求交给Spring Web MVC处理， “/” 是用来定义默认servlet映射的。也可以如“*.html”表示拦截所有以html为扩展名的请求。
例如:*.do 那么只有匹配.do结尾的路径请求才会被spring mvc拦截 -->
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>

config.xml

<?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:p="http://www.springframework.org/schema/p"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 遍历所有的类 -->
<context:component-scan base-package="z.talent"/>
<!-- 加载框架mvc驱动 我自己说的 反正这两句少了就是不行，不信你试试-->
<mvc:annotation-driven />
<!-- View构建bean 假设control里写mapping为hello name处理url：hello/*.jsp location为/*.jsp -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>

自己的观点解释下 spring mvc流程

见下图