Springmvc入门程序及Springmvc执行流程

1.创建一个web工程
2.导入jar
   spring-jar
3.配置web.xml
  <servlet>
  <servlet-name>springmvc</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>
  </servlet>
  <servlet-mapping>
  <servlet-name>springmvc</servlet-name>
  <url-pattern>*.do</url-pattern>
  </servlet-mapping>
4配置springmvc.xml
<!-- 配置处理器映射器 -->
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
<!-- 配置处理器适配器执行Controlelr ,springmvc默认的 SimpleControllerHandlerAdapter:执行Controller -->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean>
<!-- 配置自定义Controler -->
<bean name="/hello.do" class="cn.ithuplion.controller.UserController"></bean>
<!-- 配置sprigmvc视图解析器：解析逻辑试图 后台返回逻辑试图：index 视图解析器解析出真正物理视图：前缀+逻辑试图+后缀====/WEB-INF/jsps/index.jsp -->
<bean id="viewResolver"
      class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsps/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
5.自定义Controller
    public class UserController implements Controller{

@Override
public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView mv=new ModelAndView();
mv.addObject("hello", "helloworld");
//设置逻辑视图
mv.setViewName("index");
return mv;
}
}
6定义视图页面
   根据视图解析路径：WEB-INF/jsps/index.jsp