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https://issues.apache.org/jira/browse/MTOMCAT-321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hicham Mouloudi updated MTOMCAT-321:
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Attachment: image-2020-11-27-14-17-23-102.png
> trimDirectiveWhitespaces does not apply for custom tags in Tomcat provided
> jasper lib
> -------------------------------------------------------------------------------------
>
> Key: MTOMCAT-321
> URL: https://issues.apache.org/jira/browse/MTOMCAT-321
> Project: Apache Tomcat Maven Plugin
> Issue Type: Bug
> Environment: tomcat.version : 7.0.82.A.RELEASE
> spring.version : 4.3.17.RELEASE
> java.version : 1.8
> Reporter: Hicham Mouloudi
> Priority: Major
> Attachments: image-2020-11-27-14-03-02-603.png,
> image-2020-11-27-14-08-01-135.png, image-2020-11-27-14-15-31-718.png,
> image-2020-11-27-14-17-23-102.png
>
>
> Hello,
> We have a Spring based web application project where we have about 350 custom
> tags under /WEB-INF/tags/. When inspecting the source page html, we can see a
> lot of generated white spaces between html elements (arround 5000 back to
> lines added).
> We already have the configuration in the jsp level as follow
> {code:java}
> <jsp-config> <jsp-property-group> <url-pattern>*.jsp</url-pattern> <!--
> Disable JSP scriptlets and expressions -->
> <scripting-invalid>true</scripting-invalid> <!-- Remove additional whitespace
> due to JSP directives -->
> <trim-directive-whitespaces>true</trim-directive-whitespaces>
> </jsp-property-group> </jsp-config>
> {code}
> And we also declared the <%@ page trimDirectiveWhitespaces="true" %> inside
> our jsp custom pages.
>
> We want to trim white space in all custom tags, so we need to add <%@ tag
> trimDirectiveWhitespaces="true" %> we had some blocking issues as this
> directive on tag level trim inner html element spaces
> For example a radio button that have checked directive inside will be like
> <input type="radio" value="ex" checkeddata-track-event="somevalue" ../>
> !image-2020-11-27-14-08-01-135.png|width=508,height=74!
> You can notice that the checked is concatenated with the field
> data-track-event.
>
> We also tried the following configuration
> {code:java}
> <jsp-property-group>
> <url-pattern>*.tag</url-pattern>
> <trim-directive-whitespaces>true</trim-directive-whitespaces>
> </jsp-property-group>
> {code}
> But this is blocked by the JspConfig class.
> !image-2020-11-27-14-03-02-603.png|width=977,height=292!
>
> So adding <%@ tag trimDirectiveWhitespaces="true" %> to prevent those
> generated white space in all our custom tags will have an expected error in
> our production code, as it will required a lot of test and analysis. And with
> this issue of removing inner html element white space we are afraid to break
> all existing front end functionalities, like checkout pages, user
> registration, order creations ...
>
> Can you please help on this issue by providing us with a fix or a workaround ?
> tomcat.version : 7.0.82.A.RELEAS
> spring.version : 4.3.17.RELEASE7
> java.version : 1.8
> !image-2020-11-27-14-15-31-718.png|width=584,height=179!
> Best Regards
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