spring mvc 执行后tomcat总是显示 No mapping....为什么？？？

为什么总是出现下图的问题，该怎么解？？

web.xml: log4jConfigLocation WEB-INF/log4j.properties

 <servlet>
    <servlet-name>controller</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-controller.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>controller</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.css</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.gif</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.jpg</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.js</url-pattern>
</servlet-mapping>

spring-config.xml:

errors/error errors/err

spring-controller.xml:



/context:component-scan

spring-hibernate.xml:

```<!-- 配置hibernate SessionFactory-->
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">



org.hibernate.dialect.MySQLDialect
update
true
true



<!-- 这里为SessionFactory配置了实体bean的自动扫描 -->

com.gujiaqi.bean

class="org.springframework.orm.hibernate4.HibernateTransactionManager">