Wro4j Custom XML Model Location - wro4j

Question

I've put wro.xml in src/main/resources as there are some other resources and it's easier to access them in unit tests.
I need to extend some wro classes now to be able to read the model from another place, but can't get it working.
Necessary code
web.xml:
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>WebResourceOptimizer</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
<init-param>
<param-name>targetBeanName</param-name>
<param-value>wroFilter</param-value>
</init-param>
<init-param>
<param-name>targetFilterLifecycle</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>WebResourceOptimizer</filter-name>
<url-pattern>/resources/*</url-pattern>
</filter-mapping>
applicationContext.xml:
<bean id="wroFilter" class="ro.isdc.wro.http.ConfigurableWroFilter">
<property name="properties" ref="wroProperties" />
</bean>
<bean id="wroProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="location" value="classpath:wro.properties" />
</bean>
wro.properties:
managerFactoryClassName=com.example.web.wro.manager.factory.MyWroManagerFactory;
preProcessors=cssUrlRewriting,cssImport,semicolonAppender,lessCss
postProcessors=cssMin,jsMin
debug=true
MyWroManagerFactory:
public class MyWroManagerFactory extends CopyrightKeeperConfigurableWroManagerFactory {
private static final Logger LOG = LoggerFactory.getLogger(MyWroManagerFactory.class);
#Override
protected WroModelFactory newModelFactory() {
LOG.debug("Load wro.xml directly from classpath");
return new XmlModelFactory() {
#Override
protected InputStream getModelResourceAsStream() throws IOException {
final String resourceLocation = getDefaultModelFilename();
final InputStream stream = getClass().getResourceAsStream(resourceLocation);
if (stream == null) {
throw new IOException("Invalid resource requested: " + resourceLocation);
}
return stream;
}
};
}
}
CopyrightKeeperConfigurableWroManagerFactory:
public class CopyrightKeeperConfigurableWroManagerFactory extends ConfigurableWroManagerFactory {
private static final Logger LOG = LoggerFactory.getLogger(CopyrightKeeperConfigurableWroManagerFactory.class);
private static final String[] PROCESSORS = {
CssImportPreProcessor.ALIAS,
JawrCssMinifierProcessor.ALIAS,
CssMinProcessor.ALIAS,
JSMinProcessor.ALIAS
};
#Override
protected void contributePreProcessors(final Map<String, ResourcePreProcessor> map) {
for (String processor : PROCESSORS) {
if (map.containsKey(processor)) {
LOG.debug("Apply CopyrightKeeperProcessorDecorator on " + processor);
map.put(processor, CopyrightKeeperProcessorDecorator.decorate(map.get(processor)));
}
}
}
}
Why it can't find classes/wro.xml / How to use a custom location for wro.xml?
EDIT
Here's the full log output: http://pastebin.com/NeNy1NH4

Answer 1

The problem is that you are loading the model relative to the MyWroManagerFactory class:
final InputStream stream = getClass().getResourceAsStream(resourceLocation);
That means that it will look for the model in the folder where the class is located. Since your wro.xml is located in classes folder (which is a root for classpath), you should use the following:
ClassLoader.getSystemResourceAsStream(resourceLocation);
Alternatively you could use ClasspathUriLocator:
new ClasspathUriLocator().locate("classpath:" + resourceLocation)
EDITED:
Apparently this example discovered a problem which is described in the following issue:
Until the fix is ready, the following options are available:
Option 1
Option 2