No mapping found for HTTP request with URI

<!-- SpringMVC的配置文件,包含网站跳转逻辑的控制配置 -->
<context:component-scan base-package="com.test.controller"/>

<!-- 配置视图解析器,方便页面返回 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>

视图解析器的配置中 <property>的value是拼接".jsp"页面的,路径必须保持完整"WEB-INF/views/"

<!--2、springmvc的前端控制器，拦截所有请求  -->
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>


<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<url-pattern>/</url-pattern>的三种配置 
① 完全匹配
  <url-pattern>/test/list.do</url-pattern>  

② 路径匹配
  <url-pattern>/*</url-pattern> struts2匹配根路径下的全部请求

③ 扩展名匹配
  <url-pattern>*.do</url-pattern> struts1
  <url-pattern>*.html</url-pattern> 匹配全部html结尾的请求
  <url-pattern>*</url-pattern> 不能用*，否则报错