java - Use Spring 3 filters to embed timestamp in resource paths? -


would work setup filters using spring 3 mvc paths javascript files , css files modified when streamed client, embedding timestamp in filename. , when resources later requested filter strips timestamps out?

this attempt prevent problems of cached js/css files when application redeployed

what need set up? how setup filter replace paths timestamp , how setup filter later strp timestamps out?

i need info on spring 3 mvc configuration in web.xml, ok actual code in filter need do

it may simpler use spring's resource mapping <mvc:resources>, maps virtual path real location of css , javascript files. virtual path can contain version of application. means when deploy new version of application, path of css , javascript gets sent browser different before , fools browser thinking they're new resources - , reloads them.

for example map css , javascript files in /resources:

<mvc:resources location="/resources" mapping="/resources-1.2.0/**"/>

this says request comes in url pattern /resources-1.2.0 followed (e.g. /resources-1.2.0/css/styles.css), file in folder named resources in web root.

when update application version between deployments virtual path css , javascript resources change , browsers forced reload files - though real files in same old location.

you can make application version dynamic - don't need modify config file.

there's more in-depth write of whole approach here.


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