package com.quickwebframework.view.struts2.filter;
import java.io.IOException;
import java.util.List;
import java.util.regex.Pattern;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.StrutsStatics;
import org.apache.struts2.dispatcher.Dispatcher;
import org.apache.struts2.dispatcher.mapper.ActionMapping;
import org.apache.struts2.dispatcher.ng.ExecuteOperations;
import org.apache.struts2.dispatcher.ng.PrepareOperations;
import org.apache.struts2.dispatcher.ng.filter.FilterHostConfig;
import com.quickwebframework.view.struts2.support.PluginInitOperations;
public class PluginStrutsPrepareAndExecuteFilter implements StrutsStatics,
Filter {
protected PrepareOperations prepare;
protected ExecuteOperations execute;
protected List<Pattern> excludedPatterns = null;
protected Dispatcher dispatcher;
public Dispatcher getDispatcher() {
return dispatcher;
}
public void init(FilterConfig filterConfig) throws ServletException {
PluginInitOperations init = new PluginInitOperations();
try {
FilterHostConfig config = new FilterHostConfig(filterConfig);
init.initLogging(config);
dispatcher = init.initDispatcher(config);
init.initStaticContentLoader(config, dispatcher);
prepare = new PrepareOperations(filterConfig.getServletContext(),
dispatcher);
execute = new ExecuteOperations(filterConfig.getServletContext(),
dispatcher);
this.excludedPatterns = init.buildExcludedPatternsList(dispatcher);
postInit(dispatcher, filterConfig);
} finally {
init.cleanup();
}
}
/**
* Callback for post initialization
*/
protected void postInit(Dispatcher dispatcher, FilterConfig filterConfig) {
}
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
try {
prepare.setEncodingAndLocale(request, response);
prepare.createActionContext(request, response);
prepare.assignDispatcherToThread();
if (excludedPatterns != null
&& prepare.isUrlExcluded(request, excludedPatterns)) {
chain.doFilter(request, response);
} else {
request = prepare.wrapRequest(request);
ActionMapping mapping = prepare.findActionMapping(request,
response, true);
if (mapping == null) {
boolean handled = execute.executeStaticResourceRequest(
request, response);
if (!handled) {
chain.doFilter(request, response);
}
} else {
execute.executeAction(request, response, mapping);
}
}
} finally {
prepare.cleanupRequest(request);
}
}
public void destroy() {
prepare.cleanupDispatcher();
}
}