using .properties file in web app

12-04-2008

i am trying to write a web app where a jsp page uses ResourceBundle to
get a property name and looks up its value from a include.properties
file.

include.properties
-------------------------
external-include=WEB-INF/jspf/header_tag.jsp

The main jsp contains
<html>
<% java.util.ResourceBundle bundle =
java.util.ResourceBundle.getBundle("include");
String segment = bundle.getString("external-include");%>
<jsp:include page="<%=segment %>"/>
<body>
....
</body>
</html>

I have put the include.properties in WEB-INF directory.
When i try to access the main jsp page ,I get this error=>
java.util.MissingResourceException: Can't find bundle for base name
include, locale en_US.

Can someone help me figure out how to correct this?

thanks
harry

12-04-2008

On Thu, 4 Dec 2008, harryos wrote:

> i am trying to write a web app where a jsp page uses ResourceBundle to
> get a property name and looks up its value from a include.properties
> file.
>
> include.properties
> -------------------------
> external-include=WEB-INF/jspf/header_tag.jsp
>
> The main jsp contains
> <html>
> <% java.util.ResourceBundle bundle =
> java.util.ResourceBundle.getBundle("include");
> String segment = bundle.getString("external-include");%>
> <jsp:include page="<%=segment %>"/>
> <body>
> ...
> </body>
> </html>
>
> I have put the include.properties in WEB-INF directory.
> When i try to access the main jsp page ,I get this error=>
> java.util.MissingResourceException: Can't find bundle for base name
> include, locale en_US.

Where exactly have you put the properties file? Resources need to be on
your classpath. If your classpath is rooted in WEB-INF/classes, as is
often the case, you need to put the properties file in there, rather than
in WEB-INF itself.

tom

--
I'm angry, but not Milk and Cheese angry. -- Mike Froggatt

12-04-2008

On Dec 4, 11:41*am, Tom Anderson <t...@urchin.earth.li> wrote:
> On Thu, 4 Dec 2008, harryos wrote:
> > i am trying to write a web app where a jsp page uses ResourceBundle to
> > get a property name and looks up its value from a include.properties
> > file.
>
> > include.properties
> > -------------------------
> > external-include=WEB-INF/jspf/header_tag.jsp
>
> > The main jsp contains
> > <html>
> > <% java.util.ResourceBundle bundle =
> > java.util.ResourceBundle.getBundle("include");
> > * * *String segment = bundle.getString("external-include");%>
> > <jsp:include page="<%=segment %>"/>
> > <body>
> > ...
> > </body>
> > </html>
>
> > I have put the include.properties in WEB-INF directory.
> > When i try to access the main jsp page ,I get this error=>
> > java.util.MissingResourceException: Can't find bundle for base name
> > include, locale en_US.
>
> Where exactly have you put the properties file? Resources need to be on
> your classpath. If your classpath is rooted in WEB-INF/classes, as is
> often the case, you need to put the properties file in there, rather than
> in WEB-INF itself.

The web-app classpaths is set by the container, and generally includes
the application root directory (the one above WEB-INF/) and WEB-INF/
classes/ both.

So it should be possible to refer to the properties file in WEB-INF/
as "WEB-INF/foo.properties", or whatever name. Possible, but not
actually correct.

Tom's advice is correct, because a properties file is used by the Java
classes, rather than by the display layer, so properly belongs in the
WEB-INF/classes/ rooted part of the classpath.

--
Lew

12-04-2008

On Thu, 4 Dec 2008, Lew wrote:

> On Dec 4, 11:41*am, Tom Anderson <t...@urchin.earth.li> wrote:
>> On Thu, 4 Dec 2008, harryos wrote:
>>> i am trying to write a web app where a jsp page uses ResourceBundle to
>>> get a property name and looks up its value from a include.properties
>>> file.
>>
>>> include.properties
>>> -------------------------
>>> external-include=WEB-INF/jspf/header_tag.jsp
>>
>>> The main jsp contains
>>> <html>
>>> <% java.util.ResourceBundle bundle =
>>> java.util.ResourceBundle.getBundle("include");
>>> * * *String segment = bundle.getString("external-include");%>
>>> <jsp:include page="<%=segment %>"/>
>>> <body>
>>> ...
>>> </body>
>>> </html>
>>
>>> I have put the include.properties in WEB-INF directory.
>>> When i try to access the main jsp page ,I get this error=>
>>> java.util.MissingResourceException: Can't find bundle for base name
>>> include, locale en_US.
>>
>> Where exactly have you put the properties file? Resources need to be on
>> your classpath. If your classpath is rooted in WEB-INF/classes, as is
>> often the case, you need to put the properties file in there, rather than
>> in WEB-INF itself.
>
> The web-app classpaths is set by the container, and generally includes
> the application root directory (the one above WEB-INF/) and WEB-INF/
> classes/ both.

Ah, i stand corrected.

Is the classpath controlled by entries in the WAR's manifest?

tom

--
I'm angry, but not Milk and Cheese angry. -- Mike Froggatt

12-04-2008

Lew wrote:
>> The web-app classpaths is set by the container, and generally includes
>> the application root directory (the one above WEB-INF/) and WEB-INF/
>> classes/ both.

Tom Anderson <t...@urchin.earth.li> wrote:
> Ah, i stand corrected.
>
> Is the classpath controlled by entries in the WAR's manifest?

I don't believe so. According to my reading and experiments it
depends on which classloader you use. The standard is to look in
<app>/WEB-INF/classes/ for the root of classes and resources, and any
JARs in <app>/WEB-INF/lib/. The container classloader will also look
in <app>/. There are a couple of subtleties I don't remember offhand,
dependencies on whether you're using 'ServletContext#getResource
()' ('getResourceAsStream()') or the same-named methods from 'Class'
or 'ClassLoader'.

The Tomcat docs explain how there are multiple classloaders in that
product:
<http://tomcat.apache.org/tomcat-6.0-doc/class-loader-howto.html>

More full-blown Java EE containers like WebSphere or whatever have
even more sophisticated class-loading strategies.

--
Lew

12-05-2008

On Dec 5, 12:34*am, Lew <l...@lewscanon.com> wrote:
> Tom's advice is correct, because a properties file is used by the Java classes, rather than by the display layer, so properly belongs in the WEB-INF/classes/ rooted part of the classpath.

thanks for the replies,

I packed the include.properties file into WEB-INF/classes directory
using the following

<war....>
....
<zipfileset prefix ="WEB-INF/classes"
dir="${include.props.dir}" >
<include name="**/*.properties" />
</zipfileset>
</war>
Now the jsp can find the file using ResourceBundle.getBundle
("include")

Thanks again guys
harry

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