package com.netflix.governator.guice.servlet;
import java.io.IOException;
import javax.inject.Singleton;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;
/**
* This service is a hack to solve a bug in Guice's serving of jsp files.
*
* To enable add this line to your ServletModule
* <pre>
* {@code
* serveRegex("/.*\\.jsp").with(JspDispatchServlet.class);
* bind(JspDispatchServlet.class).asEagerSingleton();
* }
* </pre>
*
* @author elandau
*/
@Singleton
public class JspDispatchServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
RequestDispatcher rd = getServletContext().getRequestDispatcher(req.getRequestURI());
req.setAttribute("org.apache.catalina.jsp_file", req.getRequestURI());
// Wrap ServletPath with an empty value to avoid Guice's null getServletPath() bug from within a filter/servlet chain
HttpServletRequest wrapped = new HttpServletRequestWrapper(req) {
public String getServletPath() {
return "";
}
};
rd.include(wrapped, resp);
}
}