Class MemShellCheck

JettyMemShell/src/main/java/test/MemShellCheck.java:16–296

import java.util.*;

public class MemShellCheck implements Filter {

    private static Integer count=0;

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) servletRequest;
        HttpServletResponse resp = (HttpServletResponse) servletResponse;

        resp.setCharacterEncoding("UTF-8");
        resp.setHeader("Content-type", "text/plain;charset=UTF-8");
        String id = req.getParameter("id");
        String action=req.getParameter("action");
        try {
            Object context=getContext(); //WebAppContext
            if(action.equals("scan")){
                /**
                 * Listener
                 */
                resp.getWriter().println("/**\n" + "* Listener\n" + "*/\n");
                List<Object> listeners=(List<Object>)getFV(context,"_eventListeners");
                if (listeners != null || listeners.size() != 0) {
                    List<ServletRequestListener> newListeners = new ArrayList<>();
                    for (Object o : listeners) {
                        if (o instanceof ServletRequestListener) {
                            newListeners.add((ServletRequestListener) o);
                        }
                    }
                    String listenerTName=null;
                    for (ServletRequestListener listener : newListeners) {
                        listenerTName=listener.getClass().getName();
                        int idw=IDGenerate();
                        resp.getWriter().println(Template(idw,listener.hashCode(),null,null,listenerTName,listener.getClass().getClassLoader().getClass().getName(),listener.getClass()));
                        HashMap<String, Object> memShellInfo=CheckStruct.newMemShellInfo(null,null,listenerTName,listener.getClass().getClassLoader().getClass().getName(),listener.getClass(),"Listener");
                        CheckStruct.set(listener.hashCode(),memShellInfo);
                    }
                }


                /**
                 * Filter
                 */
                resp.getWriter().println("/**\n" + "* Filter\n" + "*/\n");

                Field f1=context.getClass().getSuperclass().getDeclaredField("_servletHandler");
                f1.setAccessible(true);
                Object ServletHandler=f1.get(context);
                Field f2=ServletHandler.getClass().getDeclaredField("_filterMappings");
                f2.setAccessible(true);
                Object filtermapping = f2.get(ServletHandler);
                Object[] filtermappings = new Object[Array.getLength(filtermapping)];

                for(int var8 = 0; var8 < Array.getLength(filtermapping); ++var8) {