servletincluderesponsewrapper.java

java 写的一个新闻发布系统

                        JahiaConsole.println("ResponseWrapper", "Error getting dispatch context [" +
                                     appBean.getContext() + "]");
                        return super.encodeURL(URL);
                    }
                    try {
                        String path = URL;
                        if ( URL.startsWith(appBean.getContext()) ){
                            // remove the context
                            path = URL.substring(URL.indexOf(appBean.getContext()))
                                 .substring(appBean.getContext().length());
                        }
                        path = dispatchedContext.getRealPath(path);
                        File f = new File(path);
                        if ( f.isFile() ){
                            return super.encodeURL(URL);
                        }
                    } catch ( Throwable t ){
                    }
                } catch ( Throwable t){
                    JahiaConsole.printe("Exception retrieving Applicatiton Context appid["+appUniqueIDStr+"]\n",t);
                    return super.encodeURL(URL);
                }
            }

            boolean fullScreenEngineOn = false;
            if (jahiaParams.getEngine().equals(FullScreenDispatcherEngine.ENGINE_NAME)) {
                fullScreenEngineOn = true;
            }

            String realURL = new String(URL);
            // first let's check if there are special codes that are
            // actually Jahia mode settings.
            if (realURL != null) {
                if (realURL.startsWith("###JAHIA###")) {
                    // we have detected a special URL...

                    realURL = realURL.substring(11); // remove the ###JAHIA###
                    while (realURL.indexOf("###") >= 0) {
                        int seperatorPos = realURL.indexOf("###");
                        String jahiaModifier = realURL.substring(0, seperatorPos);
                        if (jahiaModifier != null) {
                            if ("fullscreen".equals(jahiaModifier.toLowerCase())) {
                                fullScreenEngineOn = true;
                            }
                            if ("restore".equals(jahiaModifier.toLowerCase())) {
                                fullScreenEngineOn = false;
                            }
                        }
                        realURL = realURL.substring(seperatorPos + 3);
                    }
                }
            }

            String URLPort;
            java.net.URL resolvedURL;

            if (jahiaParams.getRequest().getServerPort() == 80) {
                URLPort = "";
            } else {
                Integer conv = new Integer(jahiaParams.getRequest().getServerPort());
                URLPort = ":" + conv.toString();
            }

            try {
                java.net.URL contextURL = null;
                if (URL.startsWith("/")) { // if it starts with a "/" it is relative to the
                                          // the context URL
                    contextURL = new java.net.URL(jahiaParams.getRequest().getScheme() + "://" +
                                                  jahiaParams.getRequest().getServerName() +
                                                  URLPort + "/");
                } else {
                    // no starting "/", relative URL...
                    java.net.URL emulURL = new java.net.URL(emulatedURL);
                    if ((emulURL.getPort() != 80) && (emulURL.getPort() != -1)) {
                        contextURL = new java.net.URL(emulURL.getProtocol() + "://" +
                                                      emulURL.getHost() + ":" +
                                                      emulURL.getPort() +
                                                      emulURL.getPath());
                    } else {
                        contextURL = new java.net.URL(emulURL.getProtocol() + "://" +
                                                      emulURL.getHost() +
                                                      emulURL.getPath());
                    }
                }

                JahiaConsole.println("ResponseWrapper", "encodeURL.contextURL=[" + contextURL.toString() + "]");

                resolvedURL = new java.net.URL(contextURL, realURL);
            } catch (java.net.MalformedURLException mue) {
                return null;
            }

            //logger.debug( "encodeURL.resolvedURL=[" +
            //                     resolvedURL.toString() + "]");

            ServletIncludeURL = super.encodeURL(resolvedURL.toString()); // let's add Java servlet
            // logger.debug( "encodeURL.ServletIncludeURL=[" +
            //                     ServletIncludeURL + "]");
            ServletIncludeURL = java.net.URLEncoder.encode(ServletIncludeURL);

            try {

                // Hollis : append app anchor

                String anchorID = ServletIncludeResponseWrapper.getFieldIDPart(appUniqueIDStr);
                if ( anchorID != null ){
                    jahiaParams.setAnchor("field_" + anchorID);
                    // logger.debug( "set anchor to " + jahiaParams.getAnchor() );
                }
                // let's deactivate the cache in these requests since we must
                // never cache application requests.
                String savedCacheStatus = jahiaParams.getCacheStatus();
                jahiaParams.setCacheStatus(ParamBean.CACHE_BYPASS);
                String fullScreenStr = "";
                String fullScreenIDStr = jahiaParams.getRequest().getParameter("fullscreen");
                if (fullScreenIDStr == null) {
                    fullScreenIDStr = jahiaParams.getRequest().getParameter("maximize");
                }
                if (fullScreenIDStr != null) {
                       fullScreenStr = "&fullscreen=" + fullScreenIDStr;
                }

                if (fullScreenEngineOn) {

                    // we are using the full screen engine instead of the
                    // regular core engine.
                    Properties extraParams = new Properties();
                    extraParams.setProperty(ParamBean.PAGE_ID_PARAMETER,
                            Integer.toString(jahiaParams.getPageID()));
                    ServletIncludeURL =
                            jahiaParams.composeEngineUrl(
                                FullScreenDispatcherEngine.ENGINE_NAME,
                                extraParams,
                                "?appid=" +
                                appUniqueIDStr +
                                "&appparams=" +
                                ServletIncludeURL +
                                "&resetAppSession=true"
                            );
                } else {
                    ServletIncludeURL = jahiaParams.composeUrl(	"?appid=" +
                            appUniqueIDStr +
                            fullScreenStr +
                            "&appparams=" +
                            ServletIncludeURL +
                            "&resetAppSession=true"
                            );
                }
                jahiaParams.setCacheStatus(savedCacheStatus);
            } catch (JahiaException je) {
                ServletIncludeURL = null;
            }

        } else {
            if (URL.indexOf(";jsessionid=") != -1) {
                JahiaConsole.println("ResponseWrapper", "jsessionid already in URL, ignoring call and returning unmodified URL... ");
                ServletIncludeURL = URL;
            } else {
                ServletIncludeURL = super.encodeURL(URL); // let's add Java servlet
            }
        }

        return ServletIncludeURL;
    }

    public String encodeUrl(String URL) {
        return encodeURL(URL);
    }

    public void sendRedirect(String location) throws IOException {
        JahiaConsole.println("ResponseWrapper", "location=" + location + "");
        if (redirectLocation != null) {
            JahiaConsole.println("ResponseWrapper", "Multiple calls to sendRedirect, keeping only the first one.");
        } else {
            if ( location.endsWith("/") ){
                redirectLocation = location.substring(0,location.length()-1);
            } else {
                redirectLocation = location;
            }
        }
        if (isPassThrough) {
            JahiaConsole.println("ResponseWrapper", "Pass-through active, sending redirect to wrapped response directly...");
            super.sendRedirect(location);
        } else {
            JahiaConsole.println("ResponseWrapper", "redirectLocation=" + redirectLocation + "");
        }
    }


    public void setContentType(java.lang.String type) {
        JahiaConsole.println("ResponseWrapper", "Content-type set to [" + type + "]");
        if (forceEncoding != null) {
            JahiaConsole.println("ResponseWrapper", "Enforcing charset=[" + forceEncoding + "]");
            int separatorPos = type.indexOf(";");
            if (separatorPos > 0) {
                type = type.substring(0, separatorPos);
            }
            type += ";charset=" + forceEncoding;
        }
        this.contentType = type;
        int charsetPos = type.toLowerCase().indexOf("charset=");
        if (charsetPos > 0) {
            encoding = type.toUpperCase().substring(charsetPos + "charset=".length()).trim();
        }
        super.setContentType(this.contentType);
    }

    /**
     * Returns the stored content type.
     * @return a string containing the set contained type, or null if none
     * was ever set.
     */
    public String getContentType() {
        return this.contentType;

    }

    //--------------------------------------------------------------------------
    /**
     * Return the second id Part ( = the field id ) in the Application ID Str
     *
     * @param 	appUniqueIDStr Application ID Str
     * @return  String The Second ID part or null if not matching
     */
    public static String getFieldIDPart(String appUniqueIDStr){

        if ( appUniqueIDStr == null ){
            return null;
        }

        mRExpFieldID.match(appUniqueIDStr);
        return mRExpFieldID.getParen(1);
    }

    public void addCookie(Cookie cookie) {
        JahiaConsole.println("ResponseWrapper", "Adding cookie name=" + cookie.getName() );
        super.addCookie(cookie);
    }

    private void checkStreams() {
        if ((strOutputStream == null) && (strPrintWriter == null)) {
            try {
                // strPrintWriter = new StringPrintWriter(new StringWriter(), outputStringBuffer);
                if (isPassThrough) {
                    JahiaConsole.println("ResponseWrapper", "Creating output streams for response wrapper using pass-through servlet output stream...");
                    strOutputStream = new StringServletOutputStream(super.getResponse().getOutputStream(), encoding);
                } else {
                    JahiaConsole.println("ResponseWrapper", "Creating output streams for response wrapper using only stringbuffers and no pass-through...");
                    strOutputStream = new StringServletOutputStream(encoding);
                }
                OutputStreamWriter streamWriter;
                if (encoding != null) {
                    JahiaConsole.println("ResponseWrapper", "Using PrintWriter with encoding : " + encoding);
                    streamWriter = new OutputStreamWriter(strOutputStream, encoding);
                } else {
                    streamWriter = new OutputStreamWriter(strOutputStream);
                }
                strPrintWriter = new PrintWriter(streamWriter, true);
            } catch (Exception e) {
                JahiaConsole.printe("Error creating StringPrintWriter object !", e);
            }
        }
    }


}