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  • QR Code encoding and decoding using zxing

    - by helixed
    Okay, so I'm going to take the off chance that someone here has used zxing before. I'm developing a Java application, and one of the things it needs to do is encode a byte array of data into a QR Code and then decode it at a later time. Here's an example of what my encoder looks like: byte[] b = {0x48, 0x45, 0x4C, 0x4C, 0x4F}; //convert the byte array into a UTF-8 string String data; try { data = new String(b, "UTF8"); } catch (UnsupportedEncodingException e) { //the program shouldn't be able to get here return; } //get a byte matrix for the data ByteMatrix matrix; com.google.zxing.Writer writer = new QRCodeWriter(); try { matrix = writer.encode(data, com.google.zxing.BarcodeFormat.QR_CODE, width, height); } catch (com.google.zxing.WriterException e) { //exit the method return; } //generate an image from the byte matrix int width = matrix.getWidth(); int height = matrix.getHeight(); byte[][] array = matrix.getArray(); //create buffered image to draw to BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); //iterate through the matrix and draw the pixels to the image for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { int grayValue = array[y][x] & 0xff; image.setRGB(x, y, (grayValue == 0 ? 0 : 0xFFFFFF)); } } //write the image to the output stream ImageIO.write(image, "png", outputStream); The beginning byte array in this code is just used to test it. The actual byte data will be varied. Here's what my decoder looks like: //get the data from the input stream BufferedImage image = ImageIO.read(inputStream); //convert the image to a binary bitmap source LuminanceSource source = new BufferedImageLuminanceSource(image); BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source)); //decode the barcode QRCodeReader reader = new QRCodeReader(); Result result; try { result = reader.decode(bitmap, hints); } catch (ReaderException e) { //the data is improperly formatted throw new MCCDatabaseMismatchException(); } byte[] b = result.getRawBytes(); System.out.println(ByteHelper.convertUnsignedBytesToHexString(result.getText().getBytes("UTF8"))); System.out.println(ByteHelper.convertUnsignedBytesToHexString(b)); convertUnsignedBytesToHexString(byte) is a method which converts an array of bytes in a string of hexadecimal characters. When I try to run these two blocks of code together, this is the output: 48454c4c4f 202b0b78cc00ec11ec11ec11ec11ec11ec11ec Clearly the text is being encoded, but the actual bytes of data are completely off. Any help would be appreciated here. Thanks, helixed

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  • NSInvalidArgumentException: *** -[NSPlaceholderString initWithFormat:locale:arguments:]: nil argumen

    - by BU
    I have no idea where in my code is causing this problem. Can someone please take a look and let me know what I am missing? The code is relatively straightforward. +(void)processGetGameOffersByGameWithReply:(NSDictionary *)responseDictionary { GameOffer *gameOffer; @try { SharedResources *s = [SharedResources instance]; GameOffersByGameTableViewController *gameOffersByGameTableViewController = [s gameOffersByGameTableViewController]; NSMutableArray *gameOffersArray = [gameOffersByGameTableViewController gameOffersAsArray]; NSString *dealsCountString = [[responseDictionary valueForKey:@"number_of_deals"] retain]; NSNumber *dealsCount = [[SharedResources convertToNumberFromString:dealsCountString] retain]; int i=0; NSString *keyStringForTitle; NSString *title, *description, *keyStringForDescription; for(int i=0; i < dealsCount; i++) { /*NSString *keyStringForDealID = [NSString stringWithFormat:@"DealID%d", i]; NSString *DealIDString = [responseDictionary valueForKey:keyStringForDealID]; NSNumber *DealID = [[SharedResources convertToNumberFromString:DealIDString] retain];*/ keyStringForTitle = [[NSString alloc] initWithFormat:@"Title%d",i] ; title = [[NSString alloc] initWithFormat:[responseDictionary valueForKey:keyStringForTitle]]; //[[responseDictionary valueForKey:keyStringForTitle] retain]; keyStringForDescription = [[NSString alloc] initWithFormat:@"Description%d", i]; description = [[NSString alloc] initWithFormat:[responseDictionary valueForKey:keyStringForDescription]]; /*NSString *keyStringForGameID = [NSString stringWithFormat:@"GameID%d", i]; NSString *GameIDString = [responseDictionary valueForKey:keyStringForGameID]; NSNumber *GameID = [[SharedResources convertToNumberFromString:GameIDString] retain];*/ gameOffer = [[GameOffer alloc] initWithTitle:title Description:description Image:nil]; //int i =0; SharedResources *s = [SharedResources instance]; [gameOffersArray addObject:[gameOffer retain]]; int j=0; } NSString *temp = nil; int k = 0; //find the navigation controller UINavigationController *myNavigationController = [[s gamesTableViewController] navigationController]; //push the table view controller to the navigation controller; [myNavigationController pushViewController:gameOffersByGameTableViewController animated:YES]; } @catch (NSException *ex) { NSLog(@"Count is %d", [[[[SharedResources instance] gameOffersByGameTableViewController] gameOffersAsArray] count]); NSLog(@"\n%@\n%@", [gameOffer Title], [gameOffer Description] ); [SharedResources LogException:ex]; } } The problem is whenever the program gets done with the for loop, it doesn't execute the "NSString *temp=nil" anymore, it jumps to the catch statement. I tried removing the for loop setting i = 0. The problem doesn't occur anymore. It reaches teh end of the method by adding only one object in the array. The problem only occurs if there's a for loop. In the catch statement, even with the error, I can see that the array is filled properly and the [gameOffer Title] and [gameOffer Description] have the correct values. Thanks so much for your help.

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  • System.ServiceModel.Syndication.SyndicationFeed throws when the RSS document includes a <script> blo

    - by Cheeso
    The code: using (XmlReader xmlr = XmlReader.Create(new StringReader(allXml))) { var items = from item in SyndicationFeed.Load(xmlr).Items select item; } The exception: Exception: System.Xml.XmlException: Unexpected node type Element. ReadElementString method can only be called on elements with simple or empty content. Line 11, position 25. at System.Xml.XmlReader.ReadElementString() at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadXml(XmlReader reader, SyndicationFeed result) at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadFeed(XmlReader reader) at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadFrom(XmlReader reader) at System.ServiceModel.Syndication.SyndicationFeed.Load[TSyndicationFeed](XmlReader reader) at System.ServiceModel.Syndication.SyndicationFeed.Load(XmlReader reader) at Ionic.ToolsAndTests.ReadRss.Run() in c:\dev\dotnet\ReadRss.cs:line 90 The XML content: <?xml version="1.0" encoding="utf-8"?> <?xml-stylesheet type="text/xsl" href="https://www.ibm.com/developerworks/mydeveloperworks/blogs/roller-ui/styles/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" > <channel> <title>Software architecture, software engineering, and Renaissance Jazz</title> <link>https://www.ibm.com/developerworks/mydeveloperworks/blogs/gradybooch</link> <atom:link rel="self" type="application/rss+xml" href="https://www.ibm.com/developerworks/mydeveloperworks/blogs/gradybooch/feed/entries/rss?lang=en" /> <description>Software architecture, software engineering, and Renaissance Jazz</description> <language>en-us</language> <copyright>Copyright <script type='text/javascript'> document.write(blogsDate.date.localize (1273534889181));</script></copyright> <lastBuildDate>Mon, 10 May 2010 19:41:29 -0400</lastBuildDate> As you can see, on line 11, at position 25, there's a script block inside the <copyright> element. Other people have reported similar errors with other XML documents. The way I worked around this was to do a StreamReader.ReadToEnd, then do Regex.Replace on the result of that to yank out the script block, before passing the modified string to XmlReader.Create(). Feels like a hack. Has anyone got a better approach? I don't like this because I have to read in a 125k string into memory. Is it valid rss to include "complex content" like that - a script block inside an element?

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  • Flash Player 10.1 crash on shared object access

    - by Simon
    Hi all, since updating my Flash Player plugin from 10 to 10.1, I'm seeing a weird crash when accessing shared objects. Flex Builder's debugger pops up and prints a stack trace like this: undefined at flash.net::SharedObject$/getLocal() at my.code::MyClass$/load()[/my/path/to/my/MyClass.as:27] (...) This happens when calling SharedObject.getLocal("someString") for the second time for the same string, though it doesn't always crash. When using another browser on the same machine (not configured as the preferred debugging browser in Flex Builder), Flash Player remains silent. The code is wrapped in a try/catch(Error) block which does not catch this error. I'm using Flex SDK 3.5 and Flex Builder 3 on Mac OS X 10.6.3. Has anyone else seen this? Thanks, Simon

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  • JQuery > XSLT Plugin > Component returned failure code: 0x80600011 [nsIXSLTProcessorObsolete.transfo

    - by Sean Ochoa
    So, I'm using the XSLT plugin for JQuery, and here's my code: function AddPlotcardEventHandlers(){ // some code } function reportError(exception){ alert(exception.constructor.name + " Exception: " + ((exception.name) ? exception.name : "[unknown name]") + " - " + exception.message); } function GetPlotcards(){ $("#content").xslt("../xml/plotcards.xml","../xslt/plotcards.xsl", AddPlotcardEventHandlers,reportError); } Here's the modified jquery plugin. I say that its modified because I've added callbacks for success and error handling. /* * jquery.xslt.js * * Copyright (c) 2005-2008 Johann Burkard (<mailto:[email protected]>) * <http://eaio.com> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * */ /** * jQuery client-side XSLT plugins. * * @author <a href="mailto:[email protected]">Johann Burkard</a> * @version $Id: jquery.xslt.js,v 1.10 2008/08/29 21:34:24 Johann Exp $ */ (function($) { $.fn.xslt = function() { return this; } var str = /^\s*</; if (document.recalc) { // IE 5+ $.fn.xslt = function(xml, xslt, onSuccess, onError) { try{ var target = $(this); var change = function() { try{ var c = 'complete'; if (xm.readyState == c && xs.readyState == c) { window.setTimeout(function() { target.html(xm.transformNode(xs.XMLDocument)); if (onSuccess) onSuccess(); }, 50); } }catch(exception){ if (onError) onError(exception); } }; var xm = document.createElement('xml'); xm.onreadystatechange = change; xm[str.test(xml) ? "innerHTML" : "src"] = xml; var xs = document.createElement('xml'); xs.onreadystatechange = change; xs[str.test(xslt) ? "innerHTML" : "src"] = xslt; $('body').append(xm).append(xs); return this; }catch(exception){ if (onError) onError(exception); } }; } else if (window.DOMParser != undefined && window.XMLHttpRequest != undefined && window.XSLTProcessor != undefined) { // Mozilla 0.9.4+, Opera 9+ var processor = new XSLTProcessor(); var support = false; if ($.isFunction(processor.transformDocument)) { support = window.XMLSerializer != undefined; } else { support = true; } if (support) { $.fn.xslt = function(xml, xslt, onSuccess, onError) { try{ var target = $(this); var transformed = false; var xm = { readyState: 4 }; var xs = { readyState: 4 }; var change = function() { try{ if (xm.readyState == 4 && xs.readyState == 4 && !transformed) { var processor = new XSLTProcessor(); if ($.isFunction(processor.transformDocument)) { // obsolete Mozilla interface resultDoc = document.implementation.createDocument("", "", null); processor.transformDocument(xm.responseXML, xs.responseXML, resultDoc, null); target.html(new XMLSerializer().serializeToString(resultDoc)); } else { processor.importStylesheet(xs.responseXML); resultDoc = processor.transformToFragment(xm.responseXML, document); target.empty().append(resultDoc); } transformed = true; if (onSuccess) onSuccess(); } }catch(exception){ if (onError) onError(exception); } }; if (str.test(xml)) { xm.responseXML = new DOMParser().parseFromString(xml, "text/xml"); } else { xm = $.ajax({ dataType: "xml", url: xml}); xm.onreadystatechange = change; } if (str.test(xslt)) { xs.responseXML = new DOMParser().parseFromString(xslt, "text/xml"); change(); } else { xs = $.ajax({ dataType: "xml", url: xslt}); xs.onreadystatechange = change; } }catch(exception){ if (onError) onError(exception); }finally{ return this; } }; } } })(jQuery); And, here's my error msg: Object Exception: [unknown name] - Component returned failure code: 0x80600011 [nsIXSLTProcessorObsolete.transformDocument] Here's the info on the browser that I'm using for testing (with firebug v1.5.4 add-on installed): Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 I'm really not sure what to do about this.... any thoughts?

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  • Android: OutofMemoryError: bitmap size exceeds VM budget with no reason I can see.

    - by Meymann
    Hi. I am having an OutOfMemory exception with a gallery over 600x800 pixels JPEG's. The environment I've been using Gallery with JPG images around 600x800 pixels. Since my content may be a bit more complex than just images, I have set each view to be a RelativeLayout that wraps ImageView with the JPG. In order to "speed up" the user experience I have a simple cache of 4 slots that prefetches (in a looper) about 1 image left and 1 image right to the displayed image and keeps them in a 4 slot HashMap. The platform I am using AVD of 256 RAM and 128 Heap Size, with a 600x800 screen. It also happens on an Entourage Edge target, except that with the device it's harder to debug. The problem I have been getting an exception: OutofMemoryError: bitmap size exceeds VM budget And it happens when fetching the fifth image. I have tried to change the size of my image cache, and it is still the same. The strange thing: There should not be a memory problem In order to make sure the heap limit is very far away from what I need, I have defined a dummy 8MB array in the beginning, and left it unreferenced so it's immediately dispatched. It is a member of the activity thread and is defined as following static { @SuppressWarnings("unused") byte dummy[] = new byte[ 8*1024*1024 ]; } The result is that the heap size is nearly 11MB and it's all free. Note I have added that trick after it began to crash. It makes OutOfMemory less frequent. Now, I am using DDMS. Just before the crash (does not change much after the crash), DDMS shows: ID Heap Size Allocated Free %Used #Objects 1 11.195 MB 2.428 MB 8.767 MB 21.69% 47,156 And in the detail table it shows: Type Count Total Size Smallest Largest Median Average free 1,536 8.739MB 16B 7.750MB 24B 5.825KB The largest block is 7.7MB. And yet the LogCat says: ERROR/dalvikvm-heap(1923): 925200-byte external allocation too large for this process. If you mind the relation of the median and the average, it is plausible to assume that most of the available blocks are very small. However, there is a block large enough for the bitmap, it's 7.7M. How come it is still not enough? Note: I recorded a heap trace. When looking at the amount of data allocated, it does not feel like more than 2M is allocated. It does match the free memory report by DDMS. Could it be that I experience some problem like heap-fragmentation? How do I solve/workaround the problem? Is the heap shared to all threads? Could it be that I interpret the DDMS readout in a wrong way, and there is really no 900K block to allocate? If so, can anybody please tell me where I can see that? Thanks a lot Meymann

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  • java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4Connection cannot be cast to org.postgresql.jdbc4.Jdbc4Connection

    - by ???????? ??????
    I want to get PGConnection from posgresql connection in JBOSS AS7 (Data source postgresql-9.0-801.jdbc4.jar) I've got cast exception when used (WrappedConnection)connection So now I use reflection(JDK 1.7): private static PGConnection getPGConnection(Connection connection) throws SQLException { if(connection instanceof PGConnection) { return (PGConnection)connection; } try { Class[] parms = null; Method method =(connection.getClass()).getMethod("getUnderlyingConnection", parms); return (PGConnection) jdbc4Conn; } catch ... and catch exception java.lang.ClassCastException: org.postgresql.jdbc4.Jdbc4Connection cannot be cast to org.postgresql.jdbc4.Jdbc4Connection It is the same class!!! Haw could it be?

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  • Problems with transitionWithView and animateWithDuration

    - by MusicMathTech
    I have problems with transitionWithView and animateWithDuration. One of my animateWithDuration blocks doesn't transition, it is a sudden change, and transitionWithView does not temporarily disable user interaction. I have checked the docs and believe I am doing everything correctly, but obviously something is wrong. Here are the two blocks of code: This is in my main View Controller ViewController which has three container views/child view controllers. This block moves one of the container views, but does not block the user from other interactions in ViewController while the transition is occurring. [UIView transitionWithView:self.view duration:0.5 options:UIViewAnimationOptionCurveEaseOut animations:^ { CGRect frame = _containerView.frame; frame.origin.y = self.view.frame.size.height - _containerView.frame.size.height; _containerView.frame = frame; }completion:^(BOOL finished) { // do something }]; This is in one of my container view controllers. The animation seems to have no effect as the text of the productTitleLabel and productDescriptionTextView changes suddenly as if the animation block does not exist. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [self.viewController toggleFlavoredOliveOilsTableView]; if (indexPath.row > 0) { NSDictionary *selectedCellDict = [[_flavoredOliveOilsDict objectForKey:@"Unflavored Olive Oils"] objectAtIndex:indexPath.row - 1]; [UIView animateWithDuration:0.5 delay:0 options:UIViewAnimationOptionTransitionCrossDissolve animations:^ { self.viewController.productTitleLabel.text = [_flavoredOliveOilsTableView cellForRowAtIndexPath:indexPath].textLabel.text; self.viewController.productDescriptionTextView.text = [selectedCellDict objectForKey:@"Description"]; }completion:nil]; if (indexPath.row == 1) { [self.viewController setProductDescriptionTextViewFrameForInformationTab]; } else { [self.viewController setProductDescriptionTextViewFrameForNonInformationTab]; //self.viewController.productImageView.image = [UIImage imageNamed:[selectedCellDict objectForKey:@"Image"]]; } } } I think the problems are somewhat related as most of my animation and transition blocks don't work completely as expected. Thanks for any help. Edit What I am trying to accomplish is moving a container view in ViewController and set the text and image properties of a label, text view, and image view; all of which are in the main view. The details of these properties are sent via the child view controller. The transitionWithView is in a method called toggleFlavoredOiveOilsTableView which is called in didSelectRowAtIndexPath. I think the problem is that I am trying to call two different animation/transition blocks at the same time.

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  • Quartz scheduler is failing to start the cron job

    - by Amit
    Hi I am using Quartz scheduler to trigger a cron which needs to perform a host of activities. My Code for the same is as follow: In the init() method of my InitServlet class, I am defining my TimerServer public class InitServlet extends HttpServlet { public void init(ServletConfig config) throws ServletException { try { System.out.println("Starting the CRON"); //Set the DSO Handler CRON TimerServer task = TimerServer.getInstance(); task.setTask(); } catch (Exception ex) { System.out.println("Failed to start the cron"); ex.printStackTrace(); } } In my TimerServer class I have the following methods public void setTask() { try{ this.setSubscriptionDailyJob(); } catch(SchedulerException ex) { log.error("SchedulerException: "+ex.getMessage(), ex); } private void setSubscriptionDailyJob() throws SchedulerException { log.info("Step 1 "); Scheduler scheduler = schedulerFactory.getScheduler(); log.info("Step 2 "); JobDetail subscriptionJob = new JobDetail("subscription", "subscriptiongroup", SubscriptionDaily.class); log.info("Step 3 "); // Initiate CronTrigger with its name and group name CronTrigger subscriptionCronTrigger = new CronTrigger("subscriptionCronTrigger", "subscriptionTriggerGroup"); try { log.info("Subscription cron: "+Constants.SUBSCRIPTION_CRON); // setup CronExpression CronExpression cexp = new CronExpression(Constants.SUBSCRIPTION_CRON); // Assign the CronExpression to CronTrigger subscriptionCronTrigger.setCronExpression(cexp); } catch (Exception ex) { log.warn("Exception: "+ex.getMessage(), ex); } scheduler.scheduleJob(subscriptionJob, subscriptionCronTrigger); scheduler.start(); } In my SubscriptionDaily class : public class SubscriptionDaily implements Job { public void execute(JobExecutionContext arg0) throws JobExecutionException { //Actions to be performed } } Now checking my logs, I am getting Step 1, Step 2 but not further. My code is getting stucked at the TimerServer class itself. Logs wrt to Scheduler are : 17:24:43 INFO [TimerServer]: Step 1 17:24:43 INFO [SimpleThreadPool]: Job execution threads will use class loader of thread: http-8080-1 17:24:43 INFO [SchedulerSignalerImpl]: Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignalerImpl 17:24:43 INFO [QuartzScheduler]: Quartz Scheduler v.1.6.5 created. 17:24:43 INFO [RAMJobStore]: RAMJobStore initialized. 17:24:43 INFO [StdSchedulerFactory]: Quartz scheduler 'DefaultQuartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties' 17:24:43 INFO [StdSchedulerFactory]: Quartz scheduler version: 1.6.5 17:24:43 INFO [TimerServer]: Step 2 I think a log entry is missing : [QuartzScheduler]: Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED started. Please help.

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  • Django templates crashes with no sense

    - by user233323
    Hello I'm trying to use google visualization API along with django templates system. I got an error that don't know how to fix. The error is the following: invalid_block_tag raise self.error(token, "Invalid block tag: '%s'" % command) django.template.TemplateSyntaxError: Invalid block tag: 'endfor' The code is: function drawChart() { var data = new google.visualization.DataTable(); data.addColumn('date', 'time'); data.addColumn('number', 'x'); data.addColumn('number', 'y'); data.addColumn('number', 'z'); data.addRows([ {% for d in datos &} [new Date({{d.instante|date:"Y, m, d, H, i, s"}}), {{d.x}}, {{d.y}}, {{d.z}}] {% if not forloop.last %},{% endif %} ]); {% endfor %} var chart = new google.visualization.AnnotatedTimeLine(document.getElementById('chart_div')); chart.draw(data, {displayAnnotations: true}); } Thanks you all!

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  • Android:How to display images from the in a ListView?

    - by Maxood
    Android:How to display images from the web in a ListView?I have the following code to display image from a URL in an ImageView: import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import android.app.ListActivity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.widget.ImageView; public class HttpImgDownload extends ListActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Bitmap bitmap = // DownloadImage( // "http://www.streetcar.org/mim/cable/images/cable-01.jpg"); DownloadImage( "http://s.twimg.com/a/1258674567/images/default_profile_3_normal.png"); ImageView img = (ImageView) findViewById(R.id.img); img.setImageBitmap(bitmap); } private InputStream OpenHttpConnection(String urlString) throws IOException { InputStream in = null; int response = -1; URL url = new URL(urlString); URLConnection conn = url.openConnection(); if (!(conn instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection"); try{ HttpURLConnection httpConn = (HttpURLConnection) conn; httpConn.setAllowUserInteraction(false); httpConn.setInstanceFollowRedirects(true); httpConn.setRequestMethod("GET"); httpConn.connect(); response = httpConn.getResponseCode(); if (response == HttpURLConnection.HTTP_OK) { in = httpConn.getInputStream(); } } catch (Exception ex) { throw new IOException("Error connecting"); } return in; } private Bitmap DownloadImage(String URL) { Bitmap bitmap = null; InputStream in = null; try { in = OpenHttpConnection(URL); bitmap = BitmapFactory.decodeStream(in); in.close(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } return bitmap; } } Now how can i display images in an array in a listview? Here's how i want to display the images: http://sites.google.com/site/androideyecontact/_/rsrc/1238086823282/Home/android-eye-contact-lite/eye_contact-list_view_3.png?height=420&width=279

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  • can you customize adobe acrobat reader "security warning"

    - by akaphenom
    We need to insert a web beacon (i know taboo) in to adobe PDFs to know when they are opened, as one of our clients is moving to a model of "giving" their documents away and following up repeat viewers for subscriptions. Its not enough to be able to provide a download, they want to attach the PDF to an email and "blast" to directed recipients (double-opt-in etc). Adding the javascript to the pdf is easy enough: (iText) and the "openAction" event. However the security box pops up and displays: "Security Warning" "Document is trying to connect to 'xxxx.yyy.com' if you trusty the site choose Allow. If do not trust the site choose Block" [help] [allow] [block] I don't think we need to completley overhaul the dialogue box, I just think we need to change the middle text to be more descriptive of why we are doing it. Of course our client would love us to remove this completely... Thank you in advance for any feed back you can provide, Todd

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  • how to parse a Date string to java.Date

    - by hguser
    Hi: I have a date string and I wang to parse it to normal date use the java Date API,the following is my code: public static void main(String[] args) { String date="2010-10-02T12:23:23Z"; String pattern="yyyy-MM-ddThh:mm:ssZ"; SimpleDateFormat sdf=new SimpleDateFormat(pattern); try { Date d=sdf.parse(date); System.out.println(d.getYear()); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } } However I got a exception:java.lang.IllegalArgumentException: Illegal pattern character 'T' So I wonder if i have to split the string and parse it manually? BTW, I have tried to add a single quote character on either side of the T: String pattern="yyyy-MM-dd'T'hh:mm:ssZ"; It also does not work.

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  • Handle Arbitrary Exception, Print Default Exception Message

    - by inspectorG4dget
    I have a program, a part of which executes a loop. During the execution of this loop, there are exceptions. Obviously, I would like my program to run without errors, but for the sake of progress, I would like the program to execute over the entire input and not stop when an exception is thrown. The easiest way to do this would be by implementing and except block. However, when I do this, it excepts all exceptions and continues with the program and I never get to see the exception message (which I need in order to debug). Is there a way to except any arbitrary exception and be able to print out the exception message in the except block?

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  • StAX - Setting the version and encoding using XMLStreamWriter

    - by Anurag
    Hi, I am using StAX for creating XML files and then validating the file with and XSD. I am getting an error while creating the XML file: javax.xml.stream.XMLStreamException: Underlying stream encoding 'Cp1252' and input paramter for writeStartDocument() method 'UTF-8' do not match. at com.sun.xml.internal.stream.writers.XMLStreamWriterImpl.writeStartDocument(XMLStreamWriterImpl.java:1182) Here is the code snippet: XMLOutputFactory xof = XMLOutputFactory.newInstance(); try{ XMLStreamWriter xtw = xof.createXMLStreamWriter(new FileWriter(fileName)); xtw.writeStartDocument("UTF-8","1.0");} catch(XMLStreamException e) { e.printStackTrace(); } catch(IOException ie) { ie.printStackTrace(); } I am running this code on unix. Does anybody know how to set the version and encoding style.

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  • WCF ValidationFault

    - by RandomNoob
    I'm using Validation Application Block - Enterprise Library to validate parameters sent to my WCF Service operations. For instance, a certain operation requires the parameter to either be a 1 or 6, like so: [OperationContract(Name="GetEmployeesByRegion")] [FaultContract(typeof(ValidationFault))] List<Employees> GetEmployeesByRegion([DomainValidator(1,6)]int regionId); This works just fine i.e the validation fault occurs however, when the service is invoked by the client, a generic System.ServiceModel.FaultException is thrown. An the message indicates: "The creator of this fault did not specify a reason." Now, I could check the parameters myself before the service cal and throw a custom fault but that seems to defeat the purpose of attribute based validation of parameters using the Validation Application Block. Is there anyway to customize the error returned by the validation Fault? It is also possible I'm doing something completely wrong. I just want the caller to know that he/she should have passed in a 1 or 6 in the exception message. Is this possible?

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  • How do HttpOnly cookies work with AJAX requests?

    - by Shawn Simon
    JavaScript needs access to cookies if AJAX is used on a site with access restrictions based on cookies. Will HttpOnly cookies work on an AJAX site? Edit: Microsoft created a way to prevent XSS attacks by disallowing JavaScript access to cookies if HttpOnly is specified. FireFox later adopted this. So my question is: If you are using AJAX on a site, like StackOverflow, are Http-Only cookies an option? Edit 2: Question 2. If the purpose of HttpOnly is to prevent JavaScript access to cookies, and you can still retrieve the cookies via JavaScript through the XmlHttpRequest Object, what is the point of HttpOnly? Edit 3: Here is a quote from Wikipedia: When the browser receives such a cookie, it is supposed to use it as usual in the following HTTP exchanges, but not to make it visible to client-side scripts.[32] The HttpOnly flag is not part of any standard, and is not implemented in all browsers. Note that there is currently no prevention of reading or writing the session cookie via a XMLHTTPRequest. [33]. I understand that document.cookie is blocked when you use HttpOnly. But it seems that you can still read cookie values in the XMLHttpRequest object, allowing for XSS. How does HttpOnly make you any safer than? By making cookies essentially read only? In your example, I cannot write to your document.cookie, but I can still steal your cookie and post it to my domain using the XMLHttpRequest object. <script type="text/javascript"> var req = null; try { req = new XMLHttpRequest(); } catch(e) {} if (!req) try { req = new ActiveXObject("Msxml2.XMLHTTP"); } catch(e) {} if (!req) try { req = new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} req.open('GET', 'http://beta.stackoverflow.com/', false); req.send(null); alert(req.getAllResponseHeaders()); </script> Edit 4: Sorry, I meant that you could send the XMLHttpRequest to the StackOverflow domain, and then save the result of getAllResponseHeaders() to a string, regex out the cookie, and then post that to an external domain. It appears that Wikipedia and ha.ckers concur with me on this one, but I would love be re-educated... Final Edit: Ahh, apparently both sites are wrong, this is actually a bug in FireFox. IE6 & 7 are actually the only browsers that currently fully support HttpOnly. To reiterate everything I've learned: HttpOnly restricts all access to document.cookie in IE7 & and FireFox (not sure about other browsers) HttpOnly removes cookie information from the response headers in XMLHttpObject.getAllResponseHeaders() in IE7. XMLHttpObjects may only be submitted to the domain they originated from, so there is no cross-domain posting of the cookies. edit: This information is likely no longer up to date.

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  • Where to stop/destroy threads in Android Service class?

    - by niko
    Hi, I have created a threaded service the following way: public class TCPClientService extends Service{ ... @Override public void onCreate() { ... Measurements = new LinkedList<String>(); enableDataSending(); } @Override public IBinder onBind(Intent intent) { //TODO: Replace with service binding implementation return null; } @Override public void onLowMemory() { Measurements.clear(); super.onLowMemory(); }; @Override public void onDestroy() { Measurements.clear(); super.onDestroy(); try { SendDataThread.stop(); } catch(Exception e) { } }; private Runnable backgrounSendData = new Runnable() { public void run() { doSendData(); } }; private void enableDataSending() { SendDataThread = new Thread(null, backgrounSendData, "send_data"); SendDataThread.start(); } private void addMeasurementToQueue() { if(Measurements.size() <= 100) { String measurement = packData(); Measurements.add(measurement); } } private void doSendData() { while(true) { try { if(Measurements.isEmpty()) { Thread.sleep(1000); continue; } //Log.d("TCP", "C: Connecting..."); Socket socket = new Socket(); socket.setTcpNoDelay(true); socket.connect(new InetSocketAddress(serverAddress, portNumber), 3000); //socket.connect(new InetSocketAddress(serverAddress, portNumber)); if(!socket.isConnected()) { throw new Exception("Server Unavailable!"); } try { //Log.d("TCP", "C: Sending: '" + message + "'"); PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true); String message = Measurements.remove(); out.println(message); Thread.sleep(200); Log.d("TCP", "C: Sent."); Log.d("TCP", "C: Done."); connectionAvailable = true; } catch(Exception e) { Log.e("TCP", "S: Error", e); connectionAvailable = false; } finally { socket.close(); announceNetworkAvailability(connectionAvailable); } } catch (Exception e) { Log.e("TCP", "C: Error", e); connectionAvailable = false; announceNetworkAvailability(connectionAvailable); } } } } After I close the application the phone works really slow and I guess it is due to thread termination failure. Does anyone know what is the best way to terminate all threads before terminating the application?

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  • UIView removeFromSuperView animation delay

    - by Mike
    I have a method which animates one of the subviews of UIWindow and then removes it from UIWindow using removeFromSuperview. But when I put removeFromSuperview after animation block, the animation never shows, because removeFromSuperview removes the UIView from UIWindow before the animation plays :-( How can I delay removeFromSuperview so the animation plays first, and then subview is removed? I tried [NSThread sleepForTimeInterval:1]; after animation block but that didn't have desired effect, because animation sleeps too for some reason. My code for this method: - (void) animateAndRemove { NSObject *mainWindow = [[UIApplication sharedApplication] keyWindow]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:0.8]; UIView *theView = nil; for (UIView *currentView in [mainWindow subviews]) { if (currentView.tag == 666) { currentView.backgroundColor = [UIColor colorWithRed:0.8 green:0.8 blue:0.8 alpha:0.0]; theView = currentView; } } [UIView setAnimationTransition: UIViewAnimationTransitionNone forView:theView cache:YES]; [UIView commitAnimations]; //[NSThread sleepForTimeInterval:1]; [theView removeFromSuperview]; }

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  • Injecting jms resource in servlet & best practice for MDB

    - by kislo_metal
    using ejb 3.1, servlet 3.0 (glassfish server v3) Scenario: I have MDB that listen to jms messages and give processing to some other session bean (Stateless). Servelet injecting jms resource. Question 1: Why servlet can`t inject jms resources when they use static declaration ? @Resource(mappedName = "jms/Tarturus") private static ConnectionFactory connectionFactory; @Resource(mappedName = "jms/StyxMDB") private static Queue queue; private Connection connection; and @PostConstruct public void postConstruct() { try { connection = connectionFactory.createConnection(); } catch (JMSException e) { e.printStackTrace(); } } @PreDestroy public void preDestroy() { try { connection.close(); } catch (JMSException e) { e.printStackTrace(); } } The error that I get is : [#|2010-05-03T15:18:17.118+0300|WARNING|glassfish3.0|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=35;_ThreadName=Thread-1;|StandardWrapperValve[WorkerServlet]: PWC1382: Allocate exception for servlet WorkerServlet com.sun.enterprise.container.common.spi.util.InjectionException: Error creating managed object for class ua.co.rufous.server.services.WorkerServiceImpl at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.createManagedObject(InjectionManagerImpl.java:312) at com.sun.enterprise.web.WebContainer.createServletInstance(WebContainer.java:709) at com.sun.enterprise.web.WebModule.createServletInstance(WebModule.java:1937) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1252) Caused by: com.sun.enterprise.container.common.spi.util.InjectionException: Exception attempting to inject Unresolved Message-Destination-Ref ua.co.rufous.server.services.WorkerServiceImpl/[email protected]@null into class ua.co.rufous.server.services.WorkerServiceImpl at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:614) at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.inject(InjectionManagerImpl.java:384) at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.injectInstance(InjectionManagerImpl.java:141) at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.injectInstance(InjectionManagerImpl.java:127) at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.createManagedObject(InjectionManagerImpl.java:306) ... 27 more Caused by: com.sun.enterprise.container.common.spi.util.InjectionException: Illegal use of static field private static javax.jms.Queue ua.co.rufous.server.services.WorkerServiceImpl.queue on class that only supports instance-based injection at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:532) ... 31 more |#] my MDB : /** * asadmin commands * asadmin create-jms-resource --restype javax.jms.ConnectionFactory jms/Tarturus * asadmin create-jms-resource --restype javax.jms.Queue jms/StyxMDB * asadmin list-jms-resources */ @MessageDriven(mappedName = "jms/StyxMDB", activationConfig = { @ActivationConfigProperty(propertyName = "connectionFactoryJndiName", propertyValue = "jms/Tarturus"), @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"), @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue") }) public class StyxMDB implements MessageListener { @EJB private ActivationProcessingLocal aProcessing; public StyxMDB() { } public void onMessage(Message message) { try { TextMessage msg = (TextMessage) message; String hash = msg.getText(); GluttonyLogger.getInstance().writeInfoLog("geted jms message hash = " + hash); } catch (JMSException e) { } } } everything work good without static declaration: @Resource(mappedName = "jms/Tarturus") private ConnectionFactory connectionFactory; @Resource(mappedName = "jms/StyxMDB") private Queue queue; private Connection connection; Question 2: what is the best practice for working with MDB : processing full request in onMessage() or calling another bean(Stateless bean in my case) in onMessage() method that would process it. Processing including few calls to soap services, so the full processing time could be for a 3 seconds. Thank you.

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  • System.Data.SQLite parameter issue

    - by CasperT
    I have the following code: try { //Create connection SQLiteConnection conn = DBConnection.OpenDB(); //Verify user input, normally you give dbType a size, but Text is an exception var uNavnParam = new SQLiteParameter("@uNavnParam", SqlDbType.Text) { Value = uNavn }; var bNavnParam = new SQLiteParameter("@bNavnParam", SqlDbType.Text) { Value = bNavn }; var passwdParam = new SQLiteParameter("@passwdParam", SqlDbType.Text) {Value = passwd}; var pc_idParam = new SQLiteParameter("@pc_idParam", SqlDbType.TinyInt) { Value = pc_id }; var noterParam = new SQLiteParameter("@noterParam", SqlDbType.Text) { Value = noter }; var licens_idParam = new SQLiteParameter("@licens_idParam", SqlDbType.TinyInt) { Value = licens_id }; var insertSQL = new SQLiteCommand("INSERT INTO Brugere (navn, brugernavn, password, pc_id, noter, licens_id)" + "VALUES ('@uNameParam', '@bNavnParam', '@passwdParam', '@pc_idParam', '@noterParam', '@licens_idParam')", conn); insertSQL.Parameters.Add(uNavnParam); //replace paramenter with verified userinput insertSQL.Parameters.Add(bNavnParam); insertSQL.Parameters.Add(passwdParam); insertSQL.Parameters.Add(pc_idParam); insertSQL.Parameters.Add(noterParam); insertSQL.Parameters.Add(licens_idParam); insertSQL.ExecuteNonQuery(); //Execute query //Close connection DBConnection.CloseDB(conn); //Let the user know that it was changed succesfully this.Text = "Succes! Changed!"; } catch(SQLiteException e) { //Catch error MessageBox.Show(e.ToString(), "ALARM"); } It executes perfectly, but when I view my "brugere" table, it has inserted the values: '@uNameParam', '@bNavnParam', '@passwdParam', '@pc_idParam', '@noterParam', '@licens_idParam' literally. Instead of replacing them. I have tried making a breakpoint and checked the parameters, they do have the correct assigned values. So that is not the issue either. I have been tinkering with this a lot now, with no luck, can anyone help? Oh and for reference, here is the OpenDB method from the DBConnection class: public static SQLiteConnection OpenDB() { try { //Gets connectionstring from app.config const string myConnectString = "data source=data;"; var conn = new SQLiteConnection(myConnectString); conn.Open(); return conn; } catch (SQLiteException e) { MessageBox.Show(e.ToString(), "ALARM"); return null; } }

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  • UITableView: Juxtaposing row, header, and footer insertions/deletions

    - by jdandrea
    Consider a very simple UITableView with one of two states. First state: One (overall) table footer One section containing two rows, a section header, and a section footer Second state: No table footer One section containing four rows and no section header/footer In both cases, each row is essentially one of four possible UITableViewCell objects, each containing its own UITextField. We don't even bother with reuse or caching, since we're only dealing with four known cells in this case. They've been created in an accompanying XIB, so we already have them all wired up and ready to go. Now consider we want to toggle between the two states. Sounds easy enough. Let's suppose our view controller's right bar button item provides the toggling support. We'll also track the current state with an ivar and enumeration. To be explicit for a sec, here's how one might go from state 1 to 2. (Presume we handle the bar button item's title as well.) In short, we want to clear out our table's footer view, then insert the third and fourth rows. We batch this inside an update block like so: // Brute forced references to the third and fourth rows in section 0 NSUInteger row02[] = {0, 2}; NSUInteger row03[] = {0, 3}; [self.tableView beginUpdates]; state = tableStateTwo; // 'internal' iVar, not a property self.tableView.tableFooterView = nil; [self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObjects: [NSIndexPath indexPathWithIndexes:row02 length:2], [NSIndexPath indexPathWithIndexes:row03 length:2], nil] withRowAnimation:UITableViewRowAnimationFade]; [self.tableView endUpdates]; For the reverse, we want to reassign the table footer view (which, like the cells, is in the XIB ready and waiting), and remove the last two rows: // Use row02 and row03 from earlier snippet [self.tableView beginUpdates]; state = tableStateOne; self.tableView.tableFooterView = theTableFooterView; [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObjects: [NSIndexPath indexPathWithIndexes:row02 length:2], [NSIndexPath indexPathWithIndexes:row03 length:2], nil] withRowAnimation:UITableViewRowAnimationFade]; [self.tableView endUpdates]; Now, when the table asks for rows, it's very cut and dry. The first two cells are the same in both cases. Only the last two appear/disappear depending on the state. The state ivar is consulted when the Table View asks for things like number of rows in a section, height for header/footer in a section, or view for header/footer in a section. This last bit is also where I'm running into trouble. Using the above logic, section 0's header/footer does not disappear. Specifically, the footer stays below the inserted rows, but the header now overlays the topmost row. If we switch back to state one, the section footer is removed, but the section header remains. How about using [self.tableView reloadData] then? Sure, why not. We take care not to use it inside the update block, per Apple's advisement, and simply add it after endUpdates. This time, good news! The section 0 header/footer disappears. :) However ... Toggling back to state one results in a most exquisite mess! The section 0 header returns, only to overlay the first row once again (instead of appear above it). The section 0 footer is placed below the last row just fine, but the overall table footer - now reinstated - overlays the section footer. Waaaaaah … now what? Just to be sure, let's toggle back to state two again. Yep, that looks fine. Coming back to state one? Yecccch. I also tried sprinkling in a few other stunts like using reloadSections:withRowAnimation:, but that only serves to make things worse. NSRange range = {0, 1}; NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:range]; ... [self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationFade]; Case in point: If we invoke reloadSections... just before the end of the update block, changing to state two hides the first two rows from view, even though the space they would otherwise occupy remains. Switching back to state one returns section 0's header/footer to normal, but those first two rows remain invisible. Case two: Moving reloadSections... to just after the update block but before reloadData results in all rows becoming invisible! (I refer to the row as being invisible because, during tracing, tableView:cellForRowAtIndexPath: is returning bona-fide cell objects for those rows.) Case three: Moving reloadSections... after tableView:cellForRowAtIndexPath: brings us a bit closer, but the section 0 header/footer never returns when switching back to state one. Hmm. Perhaps it's a faux pas using both reloadSections... and reloadData, based on what I'm seeing at trace-time, which brings us to: Case four: Replacing reloadData with reloadSections... outright. All cells in state two disappear. All cells in state one remain missing as well (though the space is kept). So much for that theory. :) Tracing through the code, the cell and view objects, as well as the section heights, are all where they should be at the opportune times. They just aren't rendering sanely. So, how to crack this case? Clues welcome/appreciated!

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  • javax.servlet.ServletException - how could i get to the cause?

    - by Michal
    Hi, i'm getting a very strange error while opening one of the pages in my web app. The application is built on Seam 2.2 and is using JSF (RichFaces) as a view technology. I run it on Tomcat 6. The error i'm describing doesn't occur on my machine (Mac OS X), but it does on my client's dev machines (Windows) and on the server (Linux Debian). I'm sure i'm running the same version on each system and i have tried connecting to the same database... In logs everything looks fine - each next JSF Phase executes normally, and after the last one, there is this moment when the request starts processing for the SEAM debug page... And this is the stack trace i see on the debug page (nothing is logged): Exception during request processing: Caused by javax.servlet.ServletException with message: "Servlet execution threw an exception" org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:313) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178) org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53) org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) pl.mgibowski.alterium.util.LoggingFilter.doFilter(LoggingFilter.java:18) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:465) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) java.lang.Thread.run(Thread.java:619) Exception without any cause... I was trying to catch the exception with my custom Filter (LoggingFilter.java that you can see on the strack trace), using this code: try { filterChain.doFilter(servletRequest, servletResponse); } catch (Throwable e) { e.printStackTrace(); System.out.println("Stack trace:"); System.out.println(e.getStackTrace()); System.out.println("Cause:"); System.out.println(e.getCause()); } But it doesn't catch anything, the line 18 from the stack trace is this one: filterChain.doFilter(servletRequest, servletResponse); nothing gets caught by the try block. Anybody has any ideas about how could i get closer to the real cause?

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  • How to Avoid Duplicate Key Exception

    - by LifeH2O
    I am using TableAdapter to insert records in table within a loop. foreach(....) { .... .... teamsTableAdapter.Insert(_teamid, _teamname); .... } Where TeamID is the primary key in the table After first run of this loop, Insert throws Duplicate Primary Key found Exception. To handle this, i have done this foreach(....) { .... .... try { _teamsTableAdapter.Insert(_teamid, _teamname); } catch (System.Data.SqlClient.SqlException e) { if (e.Number != 2627) MessageBox.Show(e.Message); } .... .... } But using try catch statement is costly, how to avoid this exception. I am working in VS2010 and INSERT ... ON DUPLICATE KEY UPDATE does not work.

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  • how to handle exceptions in ejb 3 based soap webservice

    - by Alexandre GUIDET
    Hi, I am currently developing an EJB3 based SOAP webservice and I wonder what are the best practices to handles uncatched exceptions and return a well formated SOAP response to the client. example: @WebMethod public SomeResponse processSomeService( @WebParam(name = "someParameters") SomeParameters someParameters) { // the EJB do something with the parameters // and retrieve a response fot the client SomeResponse theResponse = this.doSomething(someParameters); return theResponse; } Do I have to catch generic exception like: @WebMethod public SomeResponse processSomeService( @WebParam(name = "someParameters") SomeParameters someParameters) { // the EJB do something with the parameters // and retrieve a response to return to the client try { SomeResponse theResponse = this.doSomething(someParameters); } catch (Exception ex) { // log the exception logger.log(Level.SEVERE, "something is going wrong {0}", ex.getMessage()); // get a generic error response not to let the // technical reason going to the client SomeResponse theResponse = SomeResponse.createError(); } return theResponse; } Is there some kind of "best practice" in order to achieve this ? Thank you

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