spring配置问题

      刚刚开始学习spring，第一个例子就老走不通！烦！！
报错如下:
The requested resource (/login.do) is not available.web.xml如下：<servlet>
      <servlet-name>Dispatcher</servlet-name>
      <servlet-class>
          org.springframework.web.servlet.DispatcherServlet
      </servlet-class>
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>/WEB-INF/applicationContext.xml</param-value>
      </init-param>
      <load-on-startup>1</load-on-startup>
  </servlet>
  
  <servlet-mapping>
      <servlet-name>Dispatcher</servlet-name>
      <url-pattern>*.do</url-pattern>
  </servlet-mapping> applicationContext.xml如下： <bean id="viewResolver" 
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          >
        <property name="viewClass">
            <value>
                org.springframework.web.servlet.view.JstlView
            </value>
        </property>
        <property name="prefix">
            <value>
                /WEB-INF/
            </value>
        </property>
        <property name="suffix">
            <value>
            .jsp
            </value>
        </property>
    </bean
    <bean id="urlMapping"
          class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/login.do">LoginAction</prop>
            </props>
        </property>
    </bean>    <bean id="LoginAction"
          class="com.spring.LoginAction">
        <property name="commandClass">
            <value>
                com.spring.LoginInfo
            </value>
        </property>
        <property name="fail_view">
            <value>
                loginfail
            </value>
         </property>
         <property name="success_view">
            <value>
                main
            </value>
         </property>
    </bean>