[opencms-dev] Stupid New Lines

Jason Trump jason.trump at brulant.com
Thu Dec 15 17:04:35 CET 2005


this is a general problem with JSP; JSP can't efficiently tell which \n can be stripped out of your code, and which can.  there are two things you can do:

1.  install a white-space stripping servlet filter.  this is tricky and generally inefficient to implement and i wouldn't recommend it.  there are lots of examples of this on the internet.

2.  code your JSPs to remove the whitespace using JSP comments and careful placement of scriptlets, for example:

    DO NOT:
       <c:someTag>
                 ... my code here ...
       </c:someTag>

    DO:
       <c:someTag>... my code here ...</c:someTag>

    OR:
       <c:someTag><%--
              --%>... my code here ...<%--
   --%></c:someTag>


If you are using scriptlets, open the scriptlet declaration as soon as possible and close it as late as possible to avoid unwanted whitespace.  For example

    DO NOT:

    <p>some html code here
    <%
        scriptlet code logic here ...
    %>
    more html code here</p>


    DO:

    <p>some html code here <%

        script code logic here ...

    %> more html code here</p>

you'll notice that most of the JSPs that ship with OpenCms are written in this style.

-jason

-----Original Message-----
From: opencms-dev-bounces at opencms.org on behalf of Anatol
Sent: Thu 12/15/2005 10:42 AM
To: The OpenCms mailing list
Subject: [opencms-dev] Stupid New Lines
 
Hi All!

For every JSP-Tag ( <cms:xxxxxxx > ) I got a new line in HTML-Code (not 
a <br>, but a \n !). If I use a cms:contentload Tag and the 
cms:contentshow, there were many stupid new lines generate :-(
How can I suppress these new lines? Any idea?

best regards
Anatol


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