com.sun.facelets.FaceletException: Error Parsing /style.css

[taocore]

I am writing a portlet, and try it with css.
Following the reference guide, I created jboss-portlet.xml under WEB-INF with the content:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE portlet-app PUBLIC
 "-//JBoss Portal//DTD JBoss Portlet 2.6//EN"
 "http://www.jboss.org/portal/dtd/jboss-portlet_2_6.dtd">
<portlet-app>
 <portlet>
 <portlet-name>InventoryPortlet</portlet-name>
 <header-content>
 <link rel="stylesheet" type="text/css" href="/style.css"/>
 </header-content>
 </portlet>
</portlet-app>

And I placed the style.css under .war with simple content just for test:

body {
 background:rgb(100, 100, 0)
}

table {
 border:1px solid rgb(100, 100, 0);
 height:600px
}

I got the follwing exception when I accessed the portlet:

09:40:10,734 ERROR [STDERR] 2008-10-8 9:40:10 com.sun.facelets.FaceletViewHandle
r handleRenderException
严�: Error Rendering View[/style.css]
com.sun.facelets.FaceletException: Error Parsing /style.css: Error Traced[line:
1] Content is not allowed in prolog.
 at com.sun.facelets.compiler.SAXCompiler.doCompile(SAXCompiler.java:234)

 at com.sun.facelets.compiler.Compiler.compile(Compiler.java:105)
 at com.sun.facelets.impl.DefaultFaceletFactory.createFacelet(DefaultFace
letFactory.java:197)
 at com.sun.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFacelet
Factory.java:144)
 at com.sun.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFacelet
Factory.java:95)
 at com.sun.facelets.FaceletViewHandler.buildView(FaceletViewHandler.java
:517)
 at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.jav
a:567)
 at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWra
pper.java:108)
 at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.j
ava:189)
 at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderRes
ponseExecutor.java:41)
 at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:

[prabhat.jha]

These errors usually suggest that you have some extraneous character in your file. Please see one of the css file under jboss-portal.sar and see what's the difference.

[peterj]

Do you have an editor that you can use to view your CSS file in hex? It could be that the editor you used to create the CSS file added the Unicode byte-order characters (0xFFFE or 0xFEFF) as the first two bytes in the file. Having those bytes will often cause the given error, and any editor that understands Unicode text files will hides those bytes from you making a visual analysis of the file useless. Hence the need for a hex editor.

[taocore]

I clean the css file and rewrite a simple one, still got the same error message.