|
1
18
19 package org.objectweb.jac.aspects.gui.web;
20
21 import java.io.IOException  ;
22 import java.io.Writer ;
23 import java.util.EmptyStackException ;
24 import java.util.HashMap ;
25 import java.util.Hashtable ;
26 import java.util.Map ;
27 import javax.servlet.ServletException ;
28 import javax.servlet.ServletException ;
29 import javax.servlet.http.HttpServlet ;
30 import javax.servlet.http.HttpServletRequest ;
31 import javax.servlet.http.HttpServletResponse ;
32 import javax.servlet.http.HttpSession ;
33 import org.apache.log4j.LogManager;
34 import org.apache.log4j.Logger;
35 import org.mortbay.util.MultiMap;
36 import org.mortbay.util.UrlEncoded;
37 import org.objectweb.jac.aspects.gui.CustomizedGUI;
38 import org.objectweb.jac.aspects.gui.DisplayContext;
39 import org.objectweb.jac.aspects.gui.EventHandler;
40 import org.objectweb.jac.aspects.gui.GuiAC;
41 import org.objectweb.jac.aspects.gui.InvokeEvent;
42 import org.objectweb.jac.aspects.gui.PanelContent;
43 import org.objectweb.jac.aspects.gui.TableCellViewer;
44 import org.objectweb.jac.aspects.gui.View;
45 import org.objectweb.jac.aspects.session.SessionAC;
46 import org.objectweb.jac.core.Collaboration;
47 import org.objectweb.jac.core.NameRepository;
48 import org.objectweb.jac.core.rtti.ClassRepository;
49 import org.objectweb.jac.core.rtti.MethodItem;
50 import org.objectweb.jac.util.ExtArrays;
51 import org.objectweb.jac.util.Strings;
52 import org.objectweb.jac.util.WrappedThrowableException;
53
54
59
60 public class JacLocalServlet extends HttpServlet {
61 static final Logger logger = Logger.getLogger("web.servlet");
62 static final Logger loggerEvents = Logger.getLogger("gui.events");
63 static final Logger loggerPerf = Logger.getLogger("perf");
64 static final Logger loggerThreads = Logger.getLogger("threads");
65
66 Hashtable displays = new Hashtable ();
68
69 static Hashtable eventList = new Hashtable ();
71 static {
72 eventList.put("onDirectInvoke", new Integer (1));
73 eventList.put("onView", new Integer (2));
74 eventList.put("onTableInvoke", new Integer (3));
75 eventList.put("onSelect", new Integer (4));
76 eventList.put("onInvoke", new Integer (5));
77 eventList.put("onSelection", new Integer (6));
78 eventList.put("onCellSelection", new Integer (7));
79 eventList.put("onHeaderClick", new Integer (8));
80 eventList.put("onClose", new Integer (9));
81 eventList.put("onValidate", new Integer (10));
82 eventList.put("onOK", new Integer (11));
83 eventList.put("onCancel", new Integer (12));
84 eventList.put("onAddToCollection", new Integer (13));
85 eventList.put("onRemoveFromCollection", new Integer (14));
86 eventList.put("onNext", new Integer (15));
87 eventList.put("onPrevious", new Integer (16));
88 eventList.put("onSelectNode", new Integer (17));
89 eventList.put("onExpandNode", new Integer (18));
90 eventList.put("onCollapseNode", new Integer (19));
91 eventList.put("onMenuClick", new Integer (20));
92 eventList.put("onCreateObject", new Integer (21));
93 eventList.put("onLoadAttachment", new Integer (22));
94 eventList.put("onPreviousInCollection", new Integer (23));
95 eventList.put("onNextInCollection", new Integer (24));
96 eventList.put("onBackToCollection", new Integer (25));
97 eventList.put("onRemoveInCollection", new Integer (26));
98 eventList.put("onRemove", new Integer (27));
99 eventList.put("onFirst", new Integer (28));
100 eventList.put("onLast", new Integer (29));
101 eventList.put("onAddEmbedded", new Integer (30));
102 eventList.put("onAddExistingToCollection", new Integer (31));
103 eventList.put("onSetDefaults", new Integer (32));
104 eventList.put("onViewObject", new Integer (33));
105 eventList.put("onRefresh", new Integer (34));
106 eventList.put("onRefreshCollection", new Integer (35));
107 }
108
109 public JacLocalServlet() {
110 }
111
112 public void doPost(
113 HttpServletRequest request,
114 HttpServletResponse response)
115 throws IOException , ServletException
116 {
117 doGet(request, response);
118 }
119
120 public void doGet(HttpServletRequest request, HttpServletResponse response)
121 throws IOException , ServletException
122 {
123
125 logger.info("query -> "
126 + request.getQueryString() + " -> " + Strings.hex(response));
127 logger.debug("request -> " + request);
128
129 long start = System.currentTimeMillis();
130
131 Collaboration.get().reset();
132 HttpSession session = request.getSession(true);
133 String sid = session.getId();
134
135 String encoding = GuiAC.getEncoding();
136 if (request.getCharacterEncoding()==null) {
137 logger.info("Setting character encoding to "+encoding);
138 request.setCharacterEncoding(encoding);
139 }
140
141 response.setContentType("text/html; charset="+encoding);
142 response.setHeader("Cache-Control", "no-cache");
143
144 String contentType = request.getHeader("Content-type");
145 JacRequest jacRequest;
146 if (contentType != null
147 && contentType.startsWith("multipart/form-data")) {
148 MultiPartRequest parts = new MultiPartRequest(request,encoding);
149 jacRequest = new MultiPartJacRequest(parts, request);
150 } else {
151 jacRequest = new MultiMapJacRequest(request);
152 }
153
154 String guiID = request.getServletPath().substring(1);
155
156 WebDisplay display = (WebDisplay) displays.get(sid+":"+guiID);
157 if (display == null) {
158 logger.info("new Display for session " + sid);
159 display = new WebDisplay(GuiAC.getViewFactory("web"), sid);
160 display.setServletName(guiID);
161 displays.put(sid+":"+guiID, display);
162 }
163 logger.info(sid + " -> " + display);
164 WebDisplay.setResponse(response);
165 WebDisplay.setRequest(jacRequest);
166
167 String event = (String ) jacRequest.getParameter("event");
168 String eventAndAction =
169 (String ) jacRequest.getParameter("eventAndAction");
170 if (eventAndAction != null) {
171 MultiMap params = new MultiMap();
172 logger.debug("eventAndAction = " + eventAndAction);
173 UrlEncoded.decodeTo(eventAndAction, params);
174 logger.debug("params = " + params);
175
176 String source = (String ) jacRequest.getParameter("source");
177 View dest = null;
178 if (source == null) {
179 source = (String )params.get("source");
180 dest = display.getView(source);
181 if (dest == null) {
182 error(display, jacRequest, "ERROR: no such view "+source);
183 return;
184 }
185 Object window = dest.getContext().getWindow();
186 if (!(window instanceof WindowListener)) {
187 logger.warn("Window of "+source+" is not a WindowListener ("+window+")");
188 dest = null;
189 } else {
190 dest = (View)window;
191 }
192 } else {
193 if (source.equals(params.get("source"))) {
194 logger.debug("Skipping onValidate for "+source);
196 } else {
197 dest = display.getView(source);
198 if (dest == null) {
199 error(display, jacRequest, "ERROR: no such view "+source);
200 return;
201 }
202 }
203 }
204
205 if (dest != null) {
206 logger.info("event = onValidate -> " + dest + "(" + source + ")");
207 try {
208 loggerEvents.debug(dest+".onCancel");
209 ((WindowListener)dest).onValidate(jacRequest);
210 } catch(Exception e) {
211 logger.error("Dialog validation failed for "+dest,e);
212 }
213 } else {
214 logger.info("No source for eventAndAction");
215 }
216 jacRequest = new MultiMapJacRequest(params, request, jacRequest);
217 WebDisplay.setRequest(jacRequest);
218 handleEvent(
219 jacRequest,
220 response,
221 display,
222 sid,
223 guiID,
224 GuiAC.getCustomized(guiID));
225 } else {
226 CustomizedGUI cgui = GuiAC.getCustomized(guiID);
227 if (event == null) {
228 logger.info("No event, looking for generic action");
229 logger.info(" request="+jacRequest);
230 if (jacRequest.contains("showObject")) {
231 logger.info(" showObject");
232 String name = (String )jacRequest.getParameter("object");
234 if (name == null) {
235 error(display, jacRequest,
236 "PROTOCOL ERROR: missing object argument for showObject");
237 } else {
238 Object object = NameRepository.get().getObject(name);
239 String viewName = (String )jacRequest.getParameter("viewName");
240 if (viewName!=null) {
241 display.show(object,"Object",new Object []{viewName});
242 } else {
243 display.show(object);
244 }
245 jacRequest.waitForResponse();
246 }
247 } else {
248 HashMap panels = null;
249 for (int i = 0; i < 3; i++) {
250 String panel =
251 (String ) jacRequest.getParameter("panel[" + i + "]");
252 if (panel != null) {
253 if (panels == null)
254 panels = new HashMap ();
255 panels.put(
256 Integer.toString(i),
257 new PanelContent("Object", new String [] { panel }));
258 }
259 }
260 if (cgui == null) {
261 error(
262 display,
263 jacRequest,
264 "No such customized GUI: " + guiID);
265 } else {
266 new ShowThread(
267 display,
268 sid,
269 guiID,
270 cgui,
271 panels,
272 jacRequest,
273 response)
274 .start();
275 if (!jacRequest.waitForResponse()) {
276 showTimeout(response);
277 }
278 }
279 }
280 } else {
281 handleEvent(jacRequest, response, display, sid, guiID, cgui);
282 }
283 }
284
285
287 logger.info(
288 "request completed " + request.getQueryString()
289 + " -> " + Strings.hex(response));
290 loggerPerf.info("page generated in " + (System.currentTimeMillis() - start) + "ms");
291 }
292
293 void showTimeout(HttpServletResponse response) throws IOException {
294 Writer output = response.getWriter();
295 output.write("A timeout occurred.");
296 }
297
298 void handleEvent(
299 JacRequest jacRequest,
300 HttpServletResponse response,
301 WebDisplay display,
302 String sid,
303 String guiID,
304 CustomizedGUI cgui) throws IOException
305 {
306 String event = (String ) jacRequest.getParameter("event");
307 logger.info("handleEvent "+event);
308
309 DisplayContext context = new DisplayContext(display, null);
310 Collaboration.get().addAttribute(GuiAC.DISPLAY_CONTEXT,context);
311 Collaboration.get().addAttribute(SessionAC.SESSION_ID, sid);
312
313 Integer eventID = (Integer ) eventList.get(event);
315
316 if (eventID == null) {
317 error(
318 display,
319 jacRequest,
320 "PROTOCOL ERROR: unknown event " + event);
321 return;
322 }
323
324 if (eventID.intValue() == 1) {
328 String jid = (String ) jacRequest.getParameter("jid");
329 String methodName = (String ) jacRequest.getParameter("method");
330 String strParam = (String ) jacRequest.getParameter("param");
331 if (jid == null) {
332 error(
333 display,
334 jacRequest,
335 "PROTOCOL ERROR: missing jid argument for event " + event);
336 return;
337 }
338 if (methodName == null) {
339 error(
340 display,
341 jacRequest,
342 "PROTOCOL ERROR: missing method argument for event "
343 + event);
344 return;
345 }
346 Object object = NameRepository.get().getObject(jid);
347 if (object == null) {
348 error(
349 display,
350 jacRequest,
351 "PROTOCOL ERROR: jid " + jid + " does not exist");
352 return;
353 } else {
354 MethodItem method =
355 ClassRepository.get().getClass(object).getMethod(methodName);
356 if (strParam == null) {
357 EventHandler.get().onInvoke(
358 context,
359 new InvokeEvent(null, object, method));
360 } else {
361 EventHandler.get().onInvoke(
362 context,
363 new InvokeEvent(null, object, method, new Object [] { strParam }),
364 false,
365 null, null);
366 }
367 jacRequest.waitForResponse();
368 return;
369 }
370 }
371
372 String source = (String ) jacRequest.getParameter("source");
373 if (source == null) {
374 error(
375 display,
376 jacRequest,
377 "PROTOCOL ERROR: missing source argument for event " + event);
378 return;
379 }
380 logger.info(" source="+source);
381
382 if (display.isTimedout(source)) {
383 display.closeWindow(display.getView(source),false);
384 error(display, jacRequest, "ERROR: dialog time out");
385 return;
386 }
387 View dest = display.getView(source);
388 if (dest == null) {
389 error(display, jacRequest, "ERROR: no such view " + source);
390 return;
391 }
392 logger.info(" dest="+dest);
393 logger.info("event = " + event + " -> " + dest + "(" + source + ")");
394
395 try {
396 String tableEventSource =
397 (String ) jacRequest.getParameter("tableEventSource");
398 if (tableEventSource != null) {
399 View tableDest = display.getView(tableEventSource);
400 if (tableDest == null) {
401 error(
402 display,
403 jacRequest,
404 "ERROR: no such view " + tableEventSource);
405 return;
406 }
407 logger.info("tableEvent = " + tableEventSource + " -> " + tableDest);
408 String row = (String ) jacRequest.getParameter("row");
409 if (row == null) {
410 error(
411 display,
412 jacRequest,
413 "PROTOCOL ERROR: missing row argument for tableEvent");
414 return;
415 }
416 String col = (String ) jacRequest.getParameter("col");
417 if (col == null) {
418 error(
419 display,
420 jacRequest,
421 "PROTOCOL ERROR: missing col argument for tableEvent");
422 return;
423 }
424 if (dest instanceof TableCellViewer) {
425 dest =
426 ((TableListener) tableDest).onRowEvent(
427 new Integer (row).intValue(),
428 new Integer (col).intValue());
429 }
430 }
431
432 new ActionThread(
433 display,
434 sid,
435 guiID,
436 cgui,
437 jacRequest,
438 response,
439 event,
440 dest)
441 .start();
442 if (!jacRequest.waitForResponse()) {
443 showTimeout(response);
444 }
445
446 } catch (WrappedThrowableException wrapped) {
447 Throwable e = wrapped.getWrappedThrowable();
448 if (e instanceof EmptyStackException ) {
449 new ShowThread(
450 display,
451 sid,
452 guiID,
453 cgui,
454 null,
455 jacRequest,
456 response)
457 .start();
458 if (!jacRequest.waitForResponse()) {
459 showTimeout(response);
460 }
461 } else {
462 display.showError("Exception", "Caught exception: " + e);
463 if (!jacRequest.waitForResponse()) {
464 showTimeout(response);
465 }
466 logger.error("handleEvent("+jacRequest+")",e);
467 }
468 } catch (Throwable e) {
469 display.showError("Exception", "Caught exception: " + e);
470 if (!jacRequest.waitForResponse()) {
471 showTimeout(response);
472 }
473 logger.error("handleEvent("+jacRequest+")",e);
474 }
475
476 }
477
478 class ShowThread extends Thread {
479 WebDisplay display;
480 String guiID;
481 CustomizedGUI cgui;
482 String sid;
483 JacRequest request;
484 HttpServletResponse response;
485 Map panels;
486
487 public ShowThread(
488 WebDisplay display,
489 String sid,
490 String guiID,
491 CustomizedGUI cgui,
492 Map panels,
493 JacRequest request,
494 HttpServletResponse response) {
495 this.display = display;
496 this.guiID = guiID;
497 this.cgui = cgui;
498 this.sid = sid;
499 this.request = request;
500 this.response = response;
501 this.panels = panels;
502 }
503
504 public void run() {
505 loggerThreads.debug("starting ShowThread " + this);
506 try {
507 Collaboration.get().addAttribute(
508 GuiAC.DISPLAY_CONTEXT,
509 new DisplayContext(display, null));
510 Collaboration.get().addAttribute(SessionAC.SESSION_ID, sid);
511 WebDisplay.setRequest(request);
512 WebDisplay.setResponse(response);
513 try {
514 display.showCustomized(guiID, cgui, panels);
515 } catch (Exception e) {
516 logger.error("showThread "+guiID,e);
517 display.showError("Error", e.getMessage());
518 if (!request.waitForResponse()) {
519 showTimeout(response);
520 }
521 }
522 } catch (IOException e) {
523 logger.error("Caught exception in ShowThread",e);
524 } finally {
525 loggerThreads.debug("ShowThread " + this +" terminated");
526 }
527 }
528 }
529
530 public class ActionThread extends Thread {
531 WebDisplay display;
532 String guiID;
533 CustomizedGUI cgui;
534 String sid;
535 JacRequest jacRequest;
536 HttpServletResponse response;
537 String event;
538 int eventID;
539 View dest;
540
541 public ActionThread(
542 WebDisplay display,
543 String sid,
544 String guiID,
545 CustomizedGUI cgui,
546 JacRequest request,
547 HttpServletResponse response,
548 String event,
549 View dest)
550 {
551 this.display = display;
552 this.guiID = guiID;
553 this.cgui = cgui;
554 this.sid = sid;
555 this.jacRequest = request;
556 this.response = response;
557 this.event = event;
558 this.eventID = ((Integer ) eventList.get(event)).intValue();
559 this.dest = dest;
560 }
561
562 public void run() {
563 loggerThreads.debug("starting ActionThread " + this +" eventID=" + eventID);
564 try {
565 Collaboration collab = Collaboration.get();
566 collab.addAttribute(
567 GuiAC.DISPLAY_CONTEXT,
568 new DisplayContext(display, null));
569 collab.addAttribute(SessionAC.SESSION_ID, sid);
570 WebDisplay.setRequest(jacRequest);
571 WebDisplay.setResponse(response);
572 View root = dest.getRootView();
573 if (root instanceof DialogListener)
574 ((DialogListener) root).restoreContext();
575 handleAction();
576 } finally {
577 cleanup();
578 loggerThreads.debug("ActionThread " + this +" terminated");
579 }
580 }
581
582
585 public void cleanup() {
586 dest = null;
587 display = null;
588 jacRequest = null;
589 response = null;
590 guiID = null;
591 cgui = null;
592 sid = null;
593 event = null;
594 }
595
596 public void handleAction() {
597
598 try {
599 switch (eventID) {
600 case 2 :
601 { String index =
603 (String ) jacRequest.getParameter("index");
604 if (index == null) {
605 index =
606 (String )jacRequest.getParameter(
607 "index_" + display.getViewID(dest));
608 if (index == null) {
609 error(display,jacRequest,
610 "PROTOCOL ERROR: missing index argument for event "+event);
611 }
612 }
613 if (index != null) {
614 ((CollectionListener)dest).onView(
615 Integer.parseInt(index));
616 }
617 }
618 break;
619 case 33 :
620 { String name =
622 (String )jacRequest.getParameter("object");
623 if (name == null) {
624 error(display, jacRequest,
625 "PROTOCOL ERROR: missing object argument for event "+event);
626 } else {
627 logger.info(dest+".onViewObject("+name+")");
628 ((CollectionListener)dest).onViewObject(name);
629 }
630 }
631 break;
632 case 27 :
633 { String index =
635 (String )jacRequest.getParameter("index");
636 if (index == null) {
637 error(display, jacRequest,
638 "PROTOCOL ERROR: missing index argument for event "+event);
639 } else {
640 ((CollectionListener) dest).onRemove(
641 Integer.parseInt(index));
642 }
643 }
644 break;
645 case 3 :
646 { String index =
648 (String ) jacRequest.getParameter("index");
649 String method =
650 (String ) jacRequest.getParameter("method");
651 if (index == null) {
652 error(display,jacRequest,
653 "PROTOCOL ERROR: missing index argument for event "+event);
654 } else if (method == null) {
655 error(display,jacRequest,
656 "PROTOCOL ERROR: missing method argument for event "+event);
657 } else {
658 ((CollectionListener) dest).onTableInvoke(
659 Integer.parseInt(index),
660 method);
661 }
662 }
663 break;
664 case 4 :
665 { String index =
667 (String ) jacRequest.getParameter("index");
668 if (index == null) {
669 error(display,jacRequest,
670 "PROTOCOL ERROR: missing index argument for event "+event);
671 } else {
672 logger.info("TabsListener.onSelect(" + index + ")");
673 ((TabsListener) dest).onSelect(
674 Integer.parseInt(index));
675 }
676 }
677 break;
678 case 5 : loggerEvents.debug(dest+".onInvoke");
680 ((MethodListener) dest).onInvoke();
681 break;
682 case 6 : ((SelectionListener) dest).onSelection();
684 break;
685 case 7 : String row = (String ) jacRequest.getParameter("row");
687 if (row == null) {
688 error(display, jacRequest,
689 "PROTOCOL ERROR: missing row argument for event "+event);
690 } else {
691 String col =
692 (String ) jacRequest.getParameter("col");
693 if (row == null) {
694 error(display,jacRequest,
695 "PROTOCOL ERROR: missing row argument for event "+event);
696 } else {
697 ((TableListener) dest).onCellSelection(
698 Integer.parseInt(row),
699 Integer.parseInt(col));
700 }
701 }
702
703 break;
704 case 8 : String col = (String ) jacRequest.getParameter("col");
706 if (col == null) {
707 error(display,jacRequest,
708 "PROTOCOL ERROR: missing col argument for event "+event);
709 } else {
710 ((TableListener) dest).onHeaderClick(
711 Integer.parseInt(col));
712 }
713 break;
714 case 9 : if ((String )jacRequest.getParameter("onOK") != null) {
716 loggerEvents.debug(dest+".onOK");
717 ((WindowListener)dest).onOK(jacRequest);
718 } else if ((String )jacRequest.getParameter("onCancel") != null) {
719 loggerEvents.debug(dest+".onCancel");
720 ((WindowListener)dest).onCancel();
721 } else {
722 loggerEvents.debug(dest+".onOK");
723 ((WindowListener)dest).onOK(jacRequest);
724 }
725 break;
726 case 10 : if ((String ) jacRequest.getParameter("onOK") != null) {
728 loggerEvents.debug(dest+".onOK");
729 ((DialogListener) dest).onOK(jacRequest);
730 } else if ((String )jacRequest.getParameter("onCancel") != null) {
731 loggerEvents.debug(dest+".onCancel");
732 ((DialogListener) dest).onCancel();
733 }
734 break;
735 case 11 : ((WindowListener) dest).onOK(jacRequest);
737 break;
738 case 12 : ((WindowListener) dest).onCancel();
740 break;
741 case 34 : loggerEvents.debug(dest+".onRefresh");
743 ((WindowListener)dest).onRefresh(jacRequest);
744 break;
745 case 13 : ((CollectionListener)dest).onAddToCollection();
747 break;
748 case 31 : ((CollectionListener)dest).onAddExistingToCollection();
750 break;
751 case 14 : ((CollectionListener)dest).onRemoveFromCollection();
753 break;
754 case 15 : ((CollectionListener)dest).onNext();
756 break;
757 case 29 : ((CollectionListener)dest).onLast();
759 break;
760 case 16 : ((CollectionListener)dest).onPrevious();
762 break;
763 case 28 : ((CollectionListener)dest).onFirst();
765 break;
766 case 35: ((CollectionListener)dest).onRefreshCollection();
768 break;
769 case 17 : loggerEvents.debug(dest+".onSelectNode");
771 ((TreeListener) dest).onSelectNode(
772 (String ) jacRequest.getParameter("nodePath"));
773 break;
774 case 18 : loggerEvents.debug(dest+".onExpandNode");
776 ((TreeListener) dest).onExpandNode(
777 (String ) jacRequest.getParameter("nodePath"));
778 break;
779 case 19 : loggerEvents.debug(dest+".onCollapseNode");
781 ((TreeListener) dest).onCollapseNode(
782 (String ) jacRequest.getParameter("nodePath"));
783 break;
784 case 20 : loggerEvents.debug(dest+".onMenuClick");
786 ((MenuListener) dest).onMenuClick(
787 (String ) jacRequest.getParameter("item"));
788 break;
789 case 21 : ((ChoiceListener) dest).onCreateObject();
791 break;
792 case 22 : ((AttachmentListener) dest).onLoadAttachment();
794 break;
795 case 23 : ((CollectionItemViewListener) dest)
797 .onPreviousInCollection();
798 break;
799 case 24 : ((CollectionItemViewListener) dest)
801 .onNextInCollection();
802 break;
803 case 25 : ((CollectionItemViewListener) dest)
805 .onBackToCollection();
806 break;
807 case 26 : ((CollectionItemViewListener) dest)
809 .onRemoveInCollection();
810 break;
811 case 30 : ((TableListener) dest).onEmbeddedAddToCollection();
813 break;
814 case 32 : ((TableListener) dest).onSetDefaults();
816 break;
817 default :
818 throw new Exception (
819 "Unknown event " + event + "(" + eventID + ")");
820 }
821
822 } catch (Throwable e) {
823 logger.error("handleAction(eventID="+eventID+",event="+event+
824 ",sid="+sid+") failed",e);
825 display.show(e);
826 }
827 }
828
829 }
830
831 protected void error(
832 WebDisplay display,
833 JacRequest jacRequest,
834 String message)
835 {
836 logger.error("message",new Exception ());
837 display.showError("Servlet error", message);
838 jacRequest.waitForResponse();
839 }
840
841 }
842 |
Popular Tags |
Java API By Example, From Geeks To Geeks.