<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:spring-mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>//这个标签的意思就是项目启动的时候启动,1代表启动顺序
	</servlet>
        
        <servlet-mapping>
		<servlet-name>springMvc</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	
	<!-- 下面servlet-name default 的配置是为了让springmvc不拦截静态文件 -->
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.css</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.js</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.json</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>*.png</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>*.ico</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.doc</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.xls</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.docx</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.xlsx</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.txt</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.swf</url-pattern>
	</servlet-mapping>

springmvc所拦截的路径"/",如果不配置的话会拦截所有路径,包括静态文件等,会导致图片显示不出来,js文件加载不上,所以我们需要配置默认不需要拦截的文件来防止此问题的出现