appcontext中的mvc:resources注解

从spring3 mvc支持rest，丰富的注解，应用起来非常方便，对所有的请求当做rest来处理，这就会带来一个问题，如果是静态资源，如js、css和图片，就会导致无法完成请求。为了绕过DispatcherServlet对这些静态资源的处理，多使用UrlRewriteFilter。
web.xml配置如下

<servlet>
	<servlet-name>starframe</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
	<init-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			classpath*:applicationContext-mvc.xml
		</param-value>
	</init-param>
	<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
	<servlet-name>starframe</servlet-name>
	<url-pattern>/app/*</url-pattern>
</servlet-mapping>

urlrewrite的配置，resources下的静态资源不被DispatcherServlet接收处理

<filter>
	<filter-name>UrlRewriteFilter</filter-name>
	<filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
</filter>
<filter-mapping>
	<filter-name>UrlRewriteFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>


<urlrewrite default-match-type="wildcard">
	<rule>
		<from>/resources/**</from>
		<to>/resources/$1</to>
	</rule>
	<rule>
		<from>/**</from>
		<to>/app/$1</to>
	</rule>
	<outbound-rule>
		<from>/app/**</from>
		<to>/$1</to>
	</outbound-rule>
</urlrewrite>

spring3.0.4开始更加方便了，一行配置完成上面的请求，/resources/**映射到ResourceHttpRequestHandler进行处理，location指定静态资源的位置.可以是web application根目录下、jar包里面，这样可以把静态资源压缩到jar包中。cache-period 可以使得静态资源进行web cache

<servlet>
	<servlet-name>starframe</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
	<init-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			classpath*:applicationContext-mvc.xml
		</param-value>
	</init-param>
	<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
	<servlet-name>starframe</servlet-name>
	<url-pattern>/</url-pattern>
</servlet-mapping>

<mvc:resources location="/resources/" mapping="/resources/**"/>