课时1:SpringMVC环境搭建及第一个程序
.1)第一个SpringMVC程序
1.servirt-----------SpringMVC
2.常用的头文件
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.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
3.流程
3.1 普通的servlet流程
<servlet> <servlet-name>servlet</servlet-name> <servlet-class>net.bt.servlet.TestServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>servlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>
3.2.1 需要在web.xml配置SpringMVC自带的Servlet 交给SpringMVC处理
<!-- 处理请求--> <servlet> <servlet-name>servlet</servlet-name> <!-- springMVC的servlet--> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 告知springMVC的配置文件在哪个里面--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springMVC.xml</param-value> </init-param> <!-- 处理等级--> <load-on-startup>1</load-on-startup> </servlet> <!-- 拦截请求--> <servlet-mapping> <servlet-name>servlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>
3.2.1.1 /是拦截所有的请求 如果想拦截指定的请求/user/xxxx
3.2.2 在springmvc中配置如下 注解的方式
<!-- 配置扫描器--> <context:component-scan base-package="net.bt.handler"/> <!-- 配置视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/views/"> </property> <property name="suffix" value=".jsp"> </property> </bean>
3.2.3 编写servlet类
package net.bt.handler; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; @Controller public class TestServlet { @RequestMapping("we") public String welcome(){ return "success"; } }