/**
* Outputs the HTML tags of the given component to the given writer.
*
* @param path the request path. If null, the servlet path is assumed.
* @param out the output (never null).
* @param richlet the richlet to run. If you have only one component to show and no need process
* it under an execution, you could use {@link #render(javax.servlet.ServletContext,
* javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse,
* org.zkoss.zk.ui.Component, String, java.io.Writer)} instead.
* @since 5.0.5
*/
public static final void render(
ServletContext ctx,
HttpServletRequest request,
HttpServletResponse response,
Richlet richlet,
String path,
Writer out)
throws ServletException, IOException {
if (path == null) path = Https.getThisServletPath(request);
WebManager webman = WebManager.getWebManagerIfAny(ctx);
if (webman == null) {
final String ATTR = "org.zkoss.zkplus.embed.updateURI";
String updateURI = Library.getProperty(ATTR);
if (updateURI == null) updateURI = "/zkau";
else updateURI = Utils.checkUpdateURI(updateURI, ATTR);
webman = new WebManager(ctx, updateURI);
}
final Session sess = WebManager.getSession(ctx, request);
final WebApp wapp = sess.getWebApp();
final WebAppCtrl wappc = (WebAppCtrl) wapp;
final Object old =
I18Ns.setup(sess, request, response, wapp.getConfiguration().getResponseCharset());
Execution exec = null;
try {
final Desktop desktop = webman.getDesktop(sess, request, response, path, true);
if (desktop == null) // forward or redirect
return;
final RequestInfo ri =
new RequestInfoImpl(wapp, sess, desktop, request, PageDefinitions.getLocator(wapp, path));
sess.setAttribute(Attributes.GAE_FIX, new Integer(0));
((SessionCtrl) sess).notifyClientRequest(true);
final UiFactory uf = wappc.getUiFactory();
final Page page = WebManager.newPage(uf, ri, richlet, response, path);
exec = new ExecutionImpl(ctx, request, response, desktop, page);
exec.setAttribute(Attributes.PAGE_REDRAW_CONTROL, "page");
exec.setAttribute(Attributes.PAGE_RENDERER, new PageRenderer(exec));
wappc.getUiEngine().execNewPage(exec, richlet, page, out);
// no need to set device type here, since UiEngine will do it later
} finally {
I18Ns.cleanup(request, old);
if (exec != null) {
exec.removeAttribute(Attributes.PAGE_REDRAW_CONTROL);
exec.removeAttribute(Attributes.PAGE_RENDERER);
}
}
}
// -- super --//
protected long getLastModified(HttpServletRequest request) {
final String pi = Https.getThisPathInfo(request);
if (pi != null
&& pi.startsWith(ClassWebResource.PATH_PREFIX)
&& pi.indexOf('*') < 0 // language independent
&& !Servlets.isIncluded(request)) {
// If a resource extension is registered for the extension,
// we assume the content is dynamic
final String ext = Servlets.getExtension(pi, false);
if (ext == null || getClassWebResource().getExtendlet(ext) == null) {
if (_lastModified == 0) _lastModified = new Date().getTime();
// Hard to know when it is modified, so cheat it..
return _lastModified;
}
}
return -1;
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
final String pi = Https.getThisPathInfo(request);
// if (log.finerable()) log.finer("Path info: "+pi);
final ServletContext ctx = getServletContext();
final boolean withpi = pi != null && pi.length() != 0;
if (withpi && pi.startsWith(ClassWebResource.PATH_PREFIX)) {
// use HttpSession to avoid loading SerializableSession in GAE
// and don't retrieve session if possible
final ClassWebResource cwr = getClassWebResource();
final HttpSession hsess = shallSession(cwr, pi) ? request.getSession(false) : null;
Object oldsess = null;
if (hsess == null) {
oldsess = SessionsCtrl.getRawCurrent();
SessionsCtrl.setCurrent(new SessionResolverImpl(ctx, request));
// it might be created later
}
WebApp wapp;
Session sess;
final Object old =
hsess != null
? (wapp = WebManager.getWebAppIfAny(ctx)) != null
&& (sess = SessionsCtrl.getSession(wapp, hsess)) != null
? I18Ns.setup(sess, request, response, "UTF-8")
: I18Ns.setup(hsess, request, response, "UTF-8")
: Charsets.setup(null, request, response, "UTF-8");
try {
cwr.service(request, response, pi.substring(ClassWebResource.PATH_PREFIX.length()));
} finally {
if (hsess != null) I18Ns.cleanup(request, old);
else {
Charsets.cleanup(request, old);
SessionsCtrl.setRawCurrent(oldsess);
}
}
return; // done
}
final Session sess = WebManager.getSession(ctx, request, false);
if (withpi) {
final AuExtension aue = getAuExtensionByPath(pi);
if (aue == null) {
response.sendError(response.SC_NOT_FOUND);
log.debug("Unknown path info: " + pi);
return;
}
Object oldsess = null;
if (sess == null) {
oldsess = SessionsCtrl.getRawCurrent();
SessionsCtrl.setCurrent(new SessionResolverImpl(ctx, request));
// it might be created later
}
final Object old =
sess != null
? I18Ns.setup(sess, request, response, "UTF-8")
: Charsets.setup(null, request, response, "UTF-8");
try {
aue.service(request, response, pi);
} finally {
if (sess != null) I18Ns.cleanup(request, old);
else {
Charsets.cleanup(request, old);
SessionsCtrl.setRawCurrent(oldsess);
}
}
return; // done
}
// AU
if (sess == null) {
response.setIntHeader("ZK-Error", response.SC_GONE); // denote timeout
// Bug 1849088: rmDesktop might be sent after invalidate
// Bug 1859776: need send response to client for redirect or others
final WebApp wapp = WebManager.getWebAppIfAny(ctx);
final String dtid = getAuDecoder(wapp).getDesktopId(request);
if (dtid != null) sessionTimeout(request, response, wapp, dtid);
return;
}
// Feature 3285074 add no-cache for security risk.
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Cache-Control", "no-store");
response.setHeader("Expires", "-1");
final Object old = I18Ns.setup(sess, request, response, "UTF-8");
try {
process(sess, request, response);
} finally {
I18Ns.cleanup(request, old);
}
}