SpringMVC之页面无法引入js文件有关问题

web.xml按照如下配置：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
	
	
   <!-- 编码集的过滤器(只对post请求起作用) -->
	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>  
            <param-name>forceEncoding</param-name>  
            <param-value>true</param-value>  
        </init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
	 
	
  <display-name>test2</display-name>
  
  <servlet>
  	<servlet-name>SpringMVC</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
  	<servlet-name>SpringMVC</servlet-name>
  	<url-pattern>/</url-pattern>
  </servlet-mapping>
  
  
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

我的js文件始终引入不到页面上来，在网上查找半天才知道原来是<url-pattern>/</url-pattern>导致的错误，

在web.xml文件上面添加如下代码便可解决问题：

<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>  

这样页面在引入css,js,图片等只需图片的路径正确便可以正确的引入到页面中了。