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POJSF navigation problem
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copied!<p>Currently i updating a jsf project and a realize a strange thing about project when a jsf page get a request and page returned to client i see page completely in browser after this a new request to same page arrives despite the fact i didnt click any thing i am using navigation handler for navigation.I am using jsf(myfaces),richfaces in my project.</p> <p>i set two break points on these class and i see most of the pages ,not all ,sent request and request goes through menufilter -> myfacesservletwrapper (at that point browser shows page completly)after this menufilter break a nother request for same page .</p> <pre><code>package com.endersys.itap.ui; import java.io.IOException; 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 com.endersys.itap.ui.module.user.User; import com.endersys.itap.ui.module.user.UserManager; import java.io.FileInputStream; import java.util.Properties; import java.util.logging.Level; import java.util.logging.Logger; public class MenuFilter implements Filter { private String ALLOWED = "login.xhtml"; private String ALLOWED_FOLDER = "a4j"; private static boolean searchEnabled = false; private static boolean syslogServiceEnabled = false; private static String SYSLOG_PAGE= "syslogsettings.xhtml"; private Properties conf; private String SEARCH_PAGE= "search.xhtml"; private static final String BASE_PATH = "/opt/itap/logmonitor/"; private static final String CONF_PATH = BASE_PATH + "etc/logmonitor.properties"; private static Logger logger = Logger.getLogger(MenuFilter.class.getName()); public void destroy() { } public void init(FilterConfig arg0) throws ServletException { if(loadConfiguration()) { if(conf.getProperty("search_enabled").equalsIgnoreCase("true")) { searchEnabled = true; } try { if(conf.getProperty("syslog_enabled").equalsIgnoreCase("true")) { syslogServiceEnabled = true; } }catch(Exception exc) { exc.printStackTrace(); } } } private boolean loadConfiguration() { conf = new Properties(); FileInputStream fis = null; try { fis = new FileInputStream(CONF_PATH); conf.load(fis); } catch (Exception e) { logger.log(Level.SEVERE, e.getMessage(), e); return false; } finally { try { if (fis != null) { fis.close(); } } catch (IOException e) { logger.log(Level.SEVERE, e.getMessage(), e); } } return true; } /** * TODO Unit test this function extensively. */ public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { try { UserManager userManager = (UserManager) ((HttpServletRequest) req) .getSession(true).getAttribute("userManager"); // http://localhost:8080/itapgui-v2*/index.xhtml* String relativePath = ((HttpServletRequest) req).getServletPath(); // Servlet path has a leading "/" but our menu items do not. relativePath = relativePath.substring(1); // http://localhost:8080*/itapgui-v2*/index.xhtml String contextPath = ((HttpServletRequest) req).getContextPath(); if(!searchEnabled && relativePath.endsWith(SEARCH_PAGE)) { ((HttpServletResponse) res).sendRedirect(contextPath + "/index.xhtml"); return; } if(!syslogServiceEnabled && relativePath.endsWith(SYSLOG_PAGE)) { ((HttpServletResponse) res).sendRedirect(contextPath + "/index.xhtml"); return; } if (!relativePath.endsWith(ALLOWED) && !relativePath.startsWith(ALLOWED_FOLDER)) { // Permission required. // if (relativePath.endsWith("logout.xhtml")) { // ((HttpServletRequest) req).getSession(true).invalidate(); // ((HttpServletResponse) res).sendRedirect(contextPath // + "/login.xhtml"); // return; // Required. // } if (userManager == null) { // Not authorized. if(relativePath != null && relativePath.endsWith("index.xhtml")) { ((HttpServletResponse) res).sendRedirect(contextPath + "/login.xhtml"); }else { ((HttpServletResponse) res).sendRedirect(contextPath + "/login.xhtml?session=expired"); } return; // Required. } User user = userManager.getUser(); if (user.getId() == null) { // Not authorized. ((HttpServletResponse) res).sendRedirect(contextPath + "/login.xhtml"); return; // Required. } else if (user.getId() != 1) { Menu menu = (Menu) ((HttpServletRequest) req).getSession(true) .getAttribute("menu"); MenuItem item = menu.getItemByPath(relativePath); if(item != null) { if (!userManager.access(item.getPerms())) { ((HttpServletResponse) res).sendRedirect(contextPath + "/error.xhtml"); return; // Required. } } } } chain.doFilter((HttpServletRequest) req, (HttpServletResponse) res); }catch(Exception exc) { exc.printStackTrace(); if(exc instanceof IOException) { throw (IOException) exc; } else if(exc instanceof ServletException) { throw (ServletException) exc; } } } } public class MyFacesServletWrapper extends MyFacesServlet { private static final String CONN_ERROR_URI = "/dberror.xhtml"; private static final String OTHER_ERROR_URI = "/errors.xhtml"; @Override public void service(ServletRequest request, ServletResponse response) throws IOException, ServletException { try { super.service(request, response); } catch (ServletException e) { HttpServletRequest req = (HttpServletRequest) request; HttpServletResponse res = (HttpServletResponse) response; //if an database exception has occured if (ExceptionUtils.indexOfType(e, javax.persistence.PersistenceException.class) != -1) { res.sendRedirect(req.getContextPath() + CONN_ERROR_URI); } else { // add the exception to the session scope attribute // to show stack trace req.getSession().setAttribute("exception", e); res.sendRedirect(req.getContextPath() + OTHER_ERROR_URI); } } } } </code></pre>

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