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AppCacheBuster - How to use and reset on Java Stack

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Hello everybody,

 

I already found that I need to reference UI5 differently when I want to use cachebuster:

 

    <script id="sap-ui-bootstrap"        src="/sapui5/resources/sap-ui-cachebuster/sap-ui-core.js"        data-sap-ui-theme="sap_bluecrystal"        data-sap-ui-xx-bindingSyntax="complex"        data-sap-ui-libs="sap.m"></script>

From time to time you need to reset cachebuster. I remember there was a url you have to call but can't find it in the docs. What path is it that I have to call to actively reset cachebuster?

 

Furthermore I found in the docs that I have to user this web.xml configuration to make cachebuster work on the Java Stack:

  <!-- ============================================================== -->  <!-- AppCacheBuster Filter                                          -->  <!-- ============================================================== -->  <filter>    <display-name>AppCacheBusterFilter</display-name>    <filter-name>AppCacheBusterFilter</filter-name>    <filter-class>com.sap.ui5.resource.AppCacheBusterFilter</filter-class>  </filter>  <filter-mapping>    <filter-name>AppCacheBusterFilter</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>

Unfortunately my local Tomcat v8.0 does not like this and stops deploying the application with the following error:

SCHWERWIEGEND: Exception starting filter AppCacheBusterFilter
java.lang.NullPointerException    at com.sap.ui5.resource.AppCacheBusterFilter.buildResourceIndex(AppCacheBusterFilter.java:192)    at com.sap.ui5.resource.AppCacheBusterFilter.buildResourceIndex(AppCacheBusterFilter.java:212)    at com.sap.ui5.resource.AppCacheBusterFilter.init(AppCacheBusterFilter.java:82)    at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4640)    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5247)    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)    at java.util.concurrent.FutureTask.run(Unknown Source)    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)    at java.lang.Thread.run(Unknown Source)

Do I really need this configuration? How can I get it to work locally or do I need to use separate web.xmls for dev and prod?

 

BR

Christian


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