org.springframework.biz.web.servlet.ModuleDispatcherServlet Maven / Gradle / Ivy
package org.springframework.biz.web.servlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
@SuppressWarnings("serial")
public class ModuleDispatcherServlet extends DispatcherServlet {
/** Well-known name for the ModuleResolver object in the bean factory for this namespace. */
public static final String MODULE_RESOLVER_BEAN_NAME = "moduleResolver";
/**
* Request attribute to hold the current ModuleResolver, retrievable by views.
* @see org.springframework.biz.web.servlet.support.RequestContextUtils#getModuleResolver
*/
public static final String MODULE_RESOLVER_ATTRIBUTE = ModuleDispatcherServlet.class.getName() + ".MODULE_RESOLVER";
/** ModuleResolver used by this servlet */
private ModuleResolver moduleResolver;
@Override
protected void initStrategies(ApplicationContext context) {
initModuleResolver(context);
super.initStrategies(context);
}
/**
* Initialize the ModuleResolver used by this class.
* If no bean is defined with the given name in the BeanFactory for this namespace,
* we default to a FixedModuleResolver.
*/
private void initModuleResolver(ApplicationContext context) {
try {
this.moduleResolver = context.getBean(MODULE_RESOLVER_BEAN_NAME, ModuleResolver.class);
if (logger.isDebugEnabled()) {
logger.debug("Using ModuleResolver [" + this.moduleResolver + "]");
}
}
catch (NoSuchBeanDefinitionException ex) {
// We need to use the default.
this.moduleResolver = getDefaultStrategy(context, ModuleResolver.class);
if (logger.isDebugEnabled()) {
logger.debug("Unable to locate ModuleResolver with name '" + MODULE_RESOLVER_BEAN_NAME + "': using default [" + this.moduleResolver + "]");
}
}
}
@Override
protected void doService(HttpServletRequest request, HttpServletResponse response) throws Exception {
request.setAttribute(MODULE_RESOLVER_ATTRIBUTE, this.moduleResolver);
super.doService(request, response);
}
}