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Posted to dev@tomcat.apache.org by "Hicham Mouloudi (Jira)" <ji...@apache.org> on 2020/11/27 13:17:00 UTC

[jira] [Updated] (MTOMCAT-321) trimDirectiveWhitespaces does not apply for custom tags in Tomcat provided jasper lib

     [ https://issues.apache.org/jira/browse/MTOMCAT-321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hicham Mouloudi updated MTOMCAT-321:
------------------------------------
    Environment: 
tomcat.version  : 7.0.82.A.RELEASE

spring.version :  4.3.17.RELEASE

java.version :  1.8



  was:
tomcat.version  : 7.0.82.A.RELEAS

spring.version :  4.3.17.RELEASE7

java.version :  1.8




> 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
>
>
> 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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