137 lines
4.7 KiB
Java
137 lines
4.7 KiB
Java
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.Map;
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import javax.servlet.DispatcherType;
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import javax.servlet.RequestDispatcher;
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import javax.servlet.ServletConfig;
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import javax.servlet.ServletException;
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import javax.servlet.ServletOutputStream;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletRequestWrapper;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpServletResponseWrapper;
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public class app extends HttpServlet
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{
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private String id;
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private class RequestWrapper extends HttpServletRequestWrapper
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{
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public RequestWrapper(HttpServletRequest r)
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{
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super(r);
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}
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}
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private class ResponseWrapper extends HttpServletResponseWrapper
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{
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public ResponseWrapper(HttpServletResponse r)
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{
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super(r);
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}
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}
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@Override
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public void init(ServletConfig sc)
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throws ServletException
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{
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id = sc.getInitParameter("id");
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}
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private RequestDispatcher getRequestDispatcher(HttpServletRequest request, String str)
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{
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String disp = request.getParameter("disp");
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if (disp != null && disp.equals("ctx")) {
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return request.getServletContext().getRequestDispatcher(str);
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}
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if (disp != null && disp.equals("name")) {
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return request.getServletContext().getNamedDispatcher(str);
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}
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if (disp == null || disp.equals("req")) {
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return request.getRequestDispatcher(str);
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}
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return null;
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}
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@Override
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public void doGet(HttpServletRequest request, HttpServletResponse response)
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throws IOException, ServletException
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{
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String dtype = "" + request.getDispatcherType();
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response.addHeader("X-" + dtype + "-Id", id);
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response.addHeader("X-" + dtype + "-Request-URI", "" + request.getRequestURI());
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response.addHeader("X-" + dtype + "-Servlet-Path", "" + request.getServletPath());
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response.addHeader("X-" + dtype + "-Path-Info", "" + request.getPathInfo());
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response.addHeader("X-" + dtype + "-Query-String", "" + request.getQueryString());
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response.addHeader("X-" + dtype + "-Dispatcher-Type", "" + request.getDispatcherType());
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response.setContentType("text/plain; charset=utf-8");
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PrintWriter out = response.getWriter();
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if (id.equals("inc")) {
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String uri = request.getParameter("uri");
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if (uri != null && request.getDispatcherType() != DispatcherType.INCLUDE) {
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response.addHeader("X-Include", "" + uri);
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out.println("Before include.");
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RequestDispatcher d = getRequestDispatcher(request, uri);
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if (d == null) {
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out.println("Dispatcher is null");
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return;
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}
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try {
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d.include(new RequestWrapper(request), new ResponseWrapper(response));
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} catch(Exception e) {
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response.addHeader("X-Exception", "" + e);
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out.println("Exception: " + e);
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}
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response.addHeader("X-After-Include", "you-should-see-this");
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out.println("After include.");
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return;
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}
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}
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if (id.equals("data")) {
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out.println("app.doGet(): #" + this + ", " + id);
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out.println("RequestURI: " + request.getRequestURI());
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out.println("ServletPath: " + request.getServletPath());
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out.println("PathInfo: " + request.getPathInfo());
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out.println("DispType: " + request.getDispatcherType());
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out.println("QueryString: " + request.getQueryString());
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Map<String, String[]> pmap = request.getParameterMap();
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for (Map.Entry<String,String[]> p : pmap.entrySet()) {
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out.println("- " + p.getKey() + "=" + String.join(",", p.getValue()));
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}
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out.println(RequestDispatcher.INCLUDE_REQUEST_URI + ": " + request.getAttribute(RequestDispatcher.INCLUDE_REQUEST_URI));
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out.println(RequestDispatcher.INCLUDE_CONTEXT_PATH + ": " + request.getAttribute(RequestDispatcher.INCLUDE_CONTEXT_PATH));
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out.println(RequestDispatcher.INCLUDE_SERVLET_PATH + ": " + request.getAttribute(RequestDispatcher.INCLUDE_SERVLET_PATH));
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out.println(RequestDispatcher.INCLUDE_PATH_INFO + ": " + request.getAttribute(RequestDispatcher.INCLUDE_PATH_INFO));
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out.println(RequestDispatcher.INCLUDE_QUERY_STRING + ": " + request.getAttribute(RequestDispatcher.INCLUDE_QUERY_STRING));
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return;
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}
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response.sendError(404);
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}
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}
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