Example usage for javax.servlet RequestDispatcher forward

List of usage examples for javax.servlet RequestDispatcher forward

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Introduction

In this page you can find the example usage for javax.servlet RequestDispatcher forward.

Prototype

public void forward(ServletRequest request, ServletResponse response) throws ServletException, IOException;

Source Link

Document

Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server.

Usage

From source file:org.pentaho.di.baserver.utils.web.HttpConnectionHelper.java

protected Response invokePlatformEndpoint(final String endpointPath, final String httpMethod,
        final Map<String, String> queryParameters) {

    Response response = new Response();

    // get servlet context and request dispatcher
    ServletContext servletContext = null;
    RequestDispatcher requestDispatcher = null;
    try {/*  w ww. j  a  v a  2 s. c  o  m*/
        Object context = getContext();
        if (context instanceof ServletContext) {
            servletContext = (ServletContext) context;
            requestDispatcher = servletContext.getRequestDispatcher("/api" + endpointPath);
        }
    } catch (NoClassDefFoundError ex) {
        logger.error("Failed to get application servlet context", ex);
        return response;
    }

    if (requestDispatcher != null) {
        // create servlet request
        URL fullyQualifiedServerURL;
        try {
            fullyQualifiedServerURL = getUrl();
        } catch (MalformedURLException e) {
            logger.error("FullyQualifiedServerURL is incorrect");
            return response;
        }

        final InternalHttpServletRequest servletRequest = new InternalHttpServletRequest(httpMethod,
                fullyQualifiedServerURL, "/api", endpointPath);
        servletRequest.setAttribute("org.apache.catalina.core.DISPATCHER_TYPE", DispatcherType.FORWARD); //FORWARD = 2

        try {
            insertParameters(httpMethod, queryParameters, servletRequest);
        } catch (UnsupportedEncodingException e) {
            logger.error("Can't encode parameters");
            return response;
        }

        ServletRequestEvent servletRequestEvent = new ServletRequestEvent(servletContext, servletRequest);
        RequestContextListener requestContextListener = new RequestContextListener();
        requestContextListener.requestInitialized(servletRequestEvent);

        // create servlet response
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        final InternalHttpServletResponse servletResponse = new InternalHttpServletResponse(outputStream);

        try {
            // used for calculating the response time
            long startTime = System.currentTimeMillis();

            requestDispatcher.forward(servletRequest, servletResponse);

            // get response time
            long responseTime = System.currentTimeMillis() - startTime;

            response.setStatusCode(servletResponse.getStatus());
            response.setResult(servletResponse.getContentAsString());
            response.setResponseTime(responseTime);
        } catch (ServletException ex) {
            logger.error("Failed ", ex);
            return response;
        } catch (IOException ex) {
            logger.error("Failed ", ex);
            return response;
        } finally {
            requestContextListener.requestDestroyed(servletRequestEvent);
        }

    }

    return response;
}

From source file:org.apache.click.ClickServlet.java

/**
 * Render the given page as a JSP to the response.
 *
 * @param page the page to render/*from  w ww .ja  va 2 s  .c o m*/
 * @throws Exception if an error occurs rendering the JSP
 */
protected void renderJSP(Page page) throws Exception {

    long startTime = System.currentTimeMillis();

    HttpServletRequest request = page.getContext().getRequest();

    HttpServletResponse response = page.getContext().getResponse();

    setRequestAttributes(page);

    RequestDispatcher dispatcher = null;

    String forward = page.getForward();

    // As "getTemplate" returns the page.getPath() by default, which is *.htm
    // we need to change to *.jsp in order to compare to the page.getForward()
    String jspTemplate = StringUtils.replace(page.getTemplate(), ".htm", ".jsp");

    if (forward.equals(jspTemplate)) {
        dispatcher = request.getRequestDispatcher(forward);

    } else {
        dispatcher = request.getRequestDispatcher(page.getTemplate());
    }

    dispatcher.forward(request, response);

    if (!configService.isProductionMode()) {
        HtmlStringBuffer buffer = new HtmlStringBuffer(50);
        buffer.append("renderJSP: ");
        if (!page.getTemplate().equals(page.getForward())) {
            buffer.append(page.getTemplate());
            buffer.append(",");
        }
        buffer.append(page.getForward());
        buffer.append(" - ");
        buffer.append(System.currentTimeMillis() - startTime);
        buffer.append(" ms");
        logger.info(buffer);
    }
}

From source file:nu.kelvin.jfileshare.servlets.AboutServlet.java

@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    ServletContext app = getServletContext();
    RequestDispatcher disp;
    req.setAttribute("tab", "About");
    disp = app.getRequestDispatcher("/templates/About.jsp");
    HttpSession session = req.getSession();
    Conf conf = (Conf) app.getAttribute("conf");

    req.setAttribute("daysLogRetention", conf.getDaysLogRetention());

    if (session.getAttribute("user") != null) {
        Connection dbConn = null;
        PreparedStatement st = null;
        try {/*from   w w w .j a  v  a 2  s  .  c om*/
            long bytesStoreAvailable = FileSystemUtils.freeSpaceKb(conf.getPathStore()) * 1024;
            req.setAttribute("bytesStoreAvailable", FileItem.humanReadable(bytesStoreAvailable));

            dbConn = ds.getConnection();
            st = dbConn.prepareStatement(
                    "select cast(count(1) as char) as logins, cast(count(distinct payload) as char) as uniqueLogins from Logs where action=\"login\" and date > (now() - INTERVAL ? DAY)");
            st.setInt(1, conf.getDaysLogRetention());
            ResultSet rs = st.executeQuery();
            if (rs.first()) {
                req.setAttribute("logins", rs.getString("logins"));
                req.setAttribute("uniqueLogins", rs.getString("uniqueLogins"));
            }

            st = dbConn.prepareStatement(
                    "select cast(count(1) as char) as downloads, sum(cast(payload as unsigned)) as bytesDownloads from Logs where action=\"download\" and date > (now() - INTERVAL ? DAY)");
            st.setInt(1, conf.getDaysLogRetention());
            rs = st.executeQuery();
            if (rs.first()) {
                req.setAttribute("downloads", rs.getString("downloads"));
                req.setAttribute("bytesDownloads", FileItem.humanReadable(rs.getLong("bytesDownloads")));
            }

            st = dbConn.prepareStatement(
                    "select cast(count(1) as char) as uploads, sum(cast(payload as unsigned)) as bytesUploads from Logs where action=\"upload\" and date > (now() - INTERVAL ? DAY)");
            st.setInt(1, conf.getDaysLogRetention());
            rs = st.executeQuery();
            if (rs.first()) {
                req.setAttribute("uploads", rs.getString("uploads"));
                req.setAttribute("bytesUploads", FileItem.humanReadable(rs.getLong("bytesUploads")));
            }
            st.close();
        } catch (SQLException e) {
            logger.severe(e.toString());
        } finally {
            if (dbConn != null) {
                try {
                    dbConn.close();
                } catch (SQLException ignore) {
                }
            }
        }
    }
    disp.forward(req, resp);
}

From source file:it.classhidra.core.controller.bsController.java

public static HttpServletResponse execRedirect(i_action action_instance, ServletContext servletContext,
        HttpServletRequest request, HttpServletResponse response, boolean allowAnotherOutput)
        throws bsControllerException, ServletException, UnavailableException {

    if (action_instance == null || action_instance.get_infoaction() == null)
        return response;
    boolean intoWrapper = false;
    Object[] resultC4AOutputMode = chech4AnotherOutputMode(action_instance, servletContext, request, response,
            allowAnotherOutput);/*from   w  w  w . j av a 2  s .  c  om*/

    if (((Boolean) resultC4AOutputMode[1]).booleanValue()) {
        return response;
    }

    if (resultC4AOutputMode[0] instanceof a_ResponseWrapper) {
        response = (a_ResponseWrapper) resultC4AOutputMode[0];
        intoWrapper = true;
    }

    action_instance.onPreRedirect();
    RequestDispatcher rd = action_instance.getCurrent_redirect().redirect(servletContext,
            action_instance.get_infoaction());
    action_instance.onPostRedirect(rd);

    if (rd == null) {
        action_instance.onPreRedirectError();

        rd = action_instance.getCurrent_redirect().redirectError(servletContext,
                action_instance.get_infoaction());
        action_instance.onPostRedirectError(rd);
    }
    if (rd == null) {
        if (!action_instance.get_infoaction().getError().equals(""))
            action_instance.getCurrent_redirect().set_uriError(action_instance.get_infoaction().getError());
        else
            action_instance.getCurrent_redirect().set_uriError(getAction_config().getAuth_error());
        rd = action_instance.getCurrent_redirect().redirectError(servletContext,
                action_instance.get_infoaction());
    }

    if (rd == null)
        throw new bsControllerException("Controller generic redirect error. Action: ["
                + action_instance.get_infoaction().getPath() + "] " + action_instance.getCurrent_redirect(),
                request, iStub.log_ERROR);
    else {
        try {
            try {
                action_instance.actionBeforeRedirect(request, response);
            } catch (Exception e) {
                throw new bsControllerException(
                        "Controller generic actionBeforeRedirect error. Action: ["
                                + action_instance.get_infoaction().getPath() + "] ->" + e.toString(),
                        request, iStub.log_ERROR);
            }

            if (!intoWrapper) {

                if (!action_instance.isIncluded()) {
                    if (response.isCommitted())
                        rd.include(request, response);
                    else
                        rd.forward(request, response);
                } else
                    rd.include(request, response);

            } else {

                String tansformationElaborationMode = getAppInit().get_transf_elaborationmode();

                if (tansformationElaborationMode == null || tansformationElaborationMode.trim().length() == 0)
                    tansformationElaborationMode = CONST_TRANSFORMATION_ELMODE_INCLUDE;

                if (tansformationElaborationMode.equalsIgnoreCase(CONST_TRANSFORMATION_ELMODE_BOTH)) {
                    if (response.isCommitted())
                        rd.include(request, response);
                    else
                        rd.forward(request, response);
                }
                if (tansformationElaborationMode.equalsIgnoreCase(CONST_TRANSFORMATION_ELMODE_INCLUDE)) {
                    rd.include(request, response);
                }
                if (tansformationElaborationMode.equalsIgnoreCase(CONST_TRANSFORMATION_ELMODE_FORWARD)) {
                    rd.forward(request, response);
                }

            }

        } catch (Exception e) {
            if (intoWrapper) {
                throw new bsControllerException(
                        "Controller generic wrapped redirect error. Action: ["
                                + action_instance.get_infoaction().getPath() + "] ->" + e.toString(),
                        iStub.log_ERROR);
            } else
                throw new bsControllerException(
                        "Controller generic redirect error. Action: ["
                                + action_instance.get_infoaction().getPath() + "] ->" + e.toString(),
                        request, iStub.log_ERROR);
        }
    }
    return response;
}

From source file:hudson.model.Hudson.java

private void doScript(StaplerRequest req, StaplerResponse rsp, RequestDispatcher view)
        throws IOException, ServletException {
    // ability to run arbitrary script is dangerous
    checkPermission(ADMINISTER);//w w w. j  a  va 2  s .c o  m

    String text = req.getParameter("script");
    if (text != null) {
        try {
            req.setAttribute("output", RemotingDiagnostics.executeGroovy(text, MasterComputer.localChannel));
        } catch (InterruptedException e) {
            throw new ServletException(e);
        }
    }

    view.forward(req, rsp);
}

From source file:jenkins.model.Jenkins.java

/**
 * @since 1.509.1/*from   w w  w .  j a  v  a2 s. c o m*/
 */
public static void _doScript(StaplerRequest req, StaplerResponse rsp, RequestDispatcher view,
        VirtualChannel channel, ACL acl) throws IOException, ServletException {
    // ability to run arbitrary script is dangerous
    acl.checkPermission(RUN_SCRIPTS);

    String text = req.getParameter("script");
    if (text != null) {
        if (!"POST".equals(req.getMethod())) {
            throw HttpResponses.error(HttpURLConnection.HTTP_BAD_METHOD, "requires POST");
        }

        if (channel == null) {
            throw HttpResponses.error(HttpURLConnection.HTTP_NOT_FOUND, "Node is offline");
        }

        try {
            req.setAttribute("output", RemotingDiagnostics.executeGroovy(text, channel));
        } catch (InterruptedException e) {
            throw new ServletException(e);
        }
    }

    view.forward(req, rsp);
}

From source file:gov.nih.nci.evs.browser.servlet.AjaxServlet.java

public void selectCSVersionAction(HttpServletRequest request, HttpServletResponse response) {
    String selectedvalueset = null;
    String uri = null;// ww  w .  ja  v a2 s.  c  om
    String multiplematches = HTTPUtils.cleanXSS((String) request.getParameter("multiplematches"));
    if (multiplematches != null) {
        selectedvalueset = HTTPUtils.cleanXSS((String) request.getParameter("valueset"));
        uri = selectedvalueset;
    } else {
        uri = HTTPUtils.cleanXSS((String) request.getParameter("vsd_uri"));
        if (uri.indexOf("|") != -1) {
            Vector u = DataUtils.parseData(uri);
            uri = (String) u.elementAt(1);
        }
    }
    request.getSession().setAttribute("vsd_uri", uri);

    try {
        String nextJSP = "/pages/resolve_value_set.jsf";
        RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(nextJSP);
        dispatcher.forward(request, response);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

From source file:gov.nih.nci.evs.browser.servlet.AjaxServlet.java

public void resolveValueSetAction(HttpServletRequest request, HttpServletResponse response) {
    String selectedvalueset = null;
    //String selectedvalueset = (String) request.getParameter("valueset");
    String multiplematches = HTTPUtils.cleanXSS((String) request.getParameter("multiplematches"));
    if (multiplematches != null) {
        selectedvalueset = HTTPUtils.cleanXSS((String) request.getParameter("valueset"));
    } else {//w  w w  .j a va 2s .  com
        selectedvalueset = HTTPUtils.cleanXSS((String) request.getParameter("vsd_uri"));
        if (selectedvalueset != null && selectedvalueset.indexOf("|") != -1) {
            Vector u = DataUtils.parseData(selectedvalueset);
            selectedvalueset = (String) u.elementAt(1);
        }
    }
    String vsd_uri = selectedvalueset;
    request.getSession().setAttribute("selectedvalueset", selectedvalueset);

    String key = vsd_uri;

    request.getSession().setAttribute("vsd_uri", vsd_uri);
    String[] coding_scheme_ref = null;

    Vector w = DataUtils.getCodingSchemeReferencesInValueSetDefinition(vsd_uri, "PRODUCTION");
    if (w != null) {
        coding_scheme_ref = new String[w.size()];
        for (int i = 0; i < w.size(); i++) {
            String s = (String) w.elementAt(i);
            coding_scheme_ref[i] = s;

        }
    }

    if (coding_scheme_ref == null || coding_scheme_ref.length == 0) {
        String msg = "No PRODUCTION version of coding scheme is available.";
        request.getSession().setAttribute("message", msg);

        try {
            String nextJSP = "/pages/resolve_value_set.jsf";
            RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(nextJSP);
            dispatcher.forward(request, response);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return;
        //return "resolve_value_set";
    }

    AbsoluteCodingSchemeVersionReferenceList csvList = new AbsoluteCodingSchemeVersionReferenceList();

    StringBuffer buf = new StringBuffer();

    for (int i = 0; i < coding_scheme_ref.length; i++) {
        String t = coding_scheme_ref[i];

        String delim = "|";
        if (t.indexOf("|") == -1) {
            delim = "$";
        }
        Vector u = DataUtils.parseData(t, delim);
        String uri = (String) u.elementAt(0);
        String version = (String) u.elementAt(1);
        if (version == null || version.compareTo("null") == 0) {
            version = DataUtils.getVocabularyVersionByTag(uri, "PRODUCTION");
        }
        //key = key + "|" + uri + "$" + version;
        buf.append("|" + uri + "$" + version);
        csvList.addAbsoluteCodingSchemeVersionReference(
                Constructors.createAbsoluteCodingSchemeVersionReference(uri, version));
    }
    key = key + buf.toString();

    request.getSession().setAttribute("coding_scheme_ref", coding_scheme_ref);

    //long time = System.currentTimeMillis();
    LexEVSValueSetDefinitionServices vsd_service = RemoteServerUtil.getLexEVSValueSetDefinitionServices();
    ResolvedValueSetDefinition rvsd = null;
    int lcv = 0;
    try {
        ValueSetDefinition vsd = DataUtils.findValueSetDefinitionByURI(vsd_uri);
        rvsd = vsd_service.resolveValueSetDefinition(vsd, csvList, null, null);
        if (rvsd != null) {
            ResolvedConceptReferencesIterator itr = rvsd.getResolvedConceptReferenceIterator();
            IteratorBeanManager iteratorBeanManager = null;

            if (FacesContext.getCurrentInstance() != null
                    && FacesContext.getCurrentInstance().getExternalContext() != null
                    && FacesContext.getCurrentInstance().getExternalContext().getSessionMap() != null) {
                iteratorBeanManager = (IteratorBeanManager) FacesContext.getCurrentInstance()
                        .getExternalContext().getSessionMap().get("iteratorBeanManager");
            }

            if (iteratorBeanManager == null) {
                iteratorBeanManager = new IteratorBeanManager();
                request.getSession().setAttribute("iteratorBeanManager", iteratorBeanManager);
            }

            request.getSession().setAttribute("ResolvedConceptReferencesIterator", itr);

            IteratorBean iteratorBean = iteratorBeanManager.getIteratorBean(key);
            if (iteratorBean == null) {
                iteratorBean = new IteratorBean(itr);
                iteratorBean.initialize();
                iteratorBean.setKey(key);
                iteratorBeanManager.addIteratorBean(iteratorBean);
            }

            request.getSession().setAttribute("coding_scheme_ref", coding_scheme_ref);
            request.getSession().setAttribute("ResolvedConceptReferencesIterator", itr);
            request.getSession().setAttribute("resolved_vs_key", key);

            try {
                String nextJSP = "/pages/resolved_value_set.jsf";
                RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(nextJSP);
                dispatcher.forward(request, response);
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            //return "resolved_value_set";
            return;
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    String msg = "Unable to resolve the value set " + vsd_uri;
    request.getSession().setAttribute("message", msg);

    try {
        String nextJSP = "/pages/resolved_value_set.jsf";
        RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(nextJSP);
        dispatcher.forward(request, response);
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    //return "resolved_value_set";
}

From source file:IdeaBroker.InserirIdeiaServlet.java

/**
 * Handles the HTTP <code>POST</code> method.
 *
 * @param request servlet request/*from ww w .  j  a v  a 2 s  . c  om*/
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    request.setCharacterEncoding("UTF-8");

    HttpSession session = request.getSession(true);

    RequestDispatcher dispatcher = null;

    String textData = null;
    String fileName = null;
    int investimento = -1, id_topico = -1;

    try { // Para apagar!!!!

        /*  isMultipart = ServletFileUpload.isMultipartContent(request);
          java.io.PrintWriter out = response.getWriter( );
          if( !isMultipart ){
            System.out.println("Multipart error ");
            return;
          }
                  
          DiskFileItemFactory factory = new DiskFileItemFactory();
          factory.setSizeThreshold(maxMemSize);
          factory.setRepository(new File("/home/joao/?rea\\ de\\ Trabalho/"));
                  
          ServletFileUpload upload = new ServletFileUpload(factory);
                  
          upload.setSizeMax(maxFileSize);
                  
          try{
                      
              List fileItems = upload.parseRequest(request);
                      
              Iterator i = fileItems.iterator();
                      
              while( i.hasNext())
              {
        FileItem fi = (FileItem)i.next();
                
        if( !fi.isFormField() )
        {
            fileName = fi.getName();
            if(!fileName.isEmpty())
            {
                 if( fileName.lastIndexOf("\\") >= 0 ){
                    file = new File( filePath + 
                    fileName.substring( fileName.lastIndexOf("\\"))) ;
                 }else{
                    file = new File( filePath + 
                    fileName.substring(fileName.lastIndexOf("\\")+1)) ;
                 }
                 fi.write(file);
            }
                
        }
        else
        {
            String inputName = (String) fi.getFieldName();
            if (inputName.equals("descricao"))
                textData = (String) fi.getString();
            else if(inputName.equals("investimento"))
                investimento = Integer.parseInt(fi.getString());
            else if(inputName.equals("id_topico"))
                id_topico = Integer.parseInt(fi.getString());
                
        }
              }*/

        /** Criar Ideia **/
        IdeaBrokerBean ideabrokerbean = (IdeaBrokerBean) session.getAttribute("ideabrokerbean");
        String username = (String) session.getAttribute("username");
        String password = (String) session.getAttribute("password");
        //System.out.println("[Servlet] Sou username =="+username+ "\n[Servlet] Token == "+ideabrokerbean.getOAuth());
        textData = request.getParameter("descricao");
        System.out.println("Descricao == " + textData);

        if ((request.getParameter("investimento") != null) && (!request.getParameter("investimento").isEmpty())
                && (ideabrokerbean.ContarLetras(request.getParameter("investimento")))) {
            System.out.println("Entra no if e investimento == " + request.getParameter("investimento"));
            investimento = Integer.parseInt(request.getParameter("investimento"));
        }

        filePath = null;
        if ((request.getParameter("id_topico") != null) && (!request.getParameter("id_topico").isEmpty()))
            id_topico = Integer.parseInt(request.getParameter("id_topico"));

        if ((textData != null && !textData.isEmpty())) {
            if (investimento != -1) {

                if ((fileName != null) && (!fileName.isEmpty())) {
                    //chama funcao que cria a ideia sem anexo
                    if (ideabrokerbean.criaIdeia(username, textData, null, id_topico, investimento))
                        dispatcher = request.getRequestDispatcher("ideia_aceite.html");
                    else
                        dispatcher = request.getRequestDispatcher("erro_ideia.html");

                    ideabrokerbean.print_service();
                } else {
                    //chama funcao que cria a ideia com anexo
                    if (ideabrokerbean.criaIdeia(username, textData, null, id_topico, investimento))
                        dispatcher = request.getRequestDispatcher("ideia_aceite.html");
                    else
                        dispatcher = request.getRequestDispatcher("erro_ideia.html");
                }
            }
        }

        //dispatcher = request.getRequestDispatcher("ideia_aceite.html");
        dispatcher.forward(request, response);

    } catch (Exception ex) {
        System.out.println(ex);
    }

}