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  • Eclipse vs Netbeans Web Service Tooling

    - by Zenzen
    Some time ago (~4-5months ago) I attented a lecture about JEE and at some point the lecturer started talking about webservices and how hard it is to create a good one because all the IDEs make them in a bit different way (or something like that) and that in general it's better to use Netbeans to create them as Eclipse has some issues, the thing is he didn't really say why Eclipse is bad. Now I'm wondering is what he said true and why, is it really better to use Netbeans for webservices and why?

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  • How to use Bouncy Castle lightweight API with AES and PBE

    - by Adrian
    I have a block of ciphertext that was created using the JCE algorithim "PBEWithSHA256And256BitAES-CBC-BC". The provider is BouncyCastle. What I'd like to do it decrypt this ciphertext using the BouncyCastle lightweight API. I don't want to use JCE because that requires installing the Unlimited Strength Jurisdiction Policy Files. Documentation seems to be thin on the ground when it comes to using BC with PBE and AES. Here's what I have so far. The decryption code runs without exception but returns rubbish. The encryption code, String password = "qwerty"; String plainText = "hello world"; byte[] salt = generateSalt(); byte[] cipherText = encrypt(plainText, password.toCharArray(), salt); private static byte[] generateSalt() throws NoSuchAlgorithmException { byte salt[] = new byte[8]; SecureRandom saltGen = SecureRandom.getInstance("SHA1PRNG"); saltGen.nextBytes(salt); return salt; } private static byte[] encrypt(String plainText, char[] password, byte[] salt) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException { Security.addProvider(new BouncyCastleProvider()); PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20); PBEKeySpec pbeKeySpec = new PBEKeySpec(password); SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithSHA256And256BitAES-CBC-BC"); SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec); Cipher encryptionCipher = Cipher.getInstance("PBEWithSHA256And256BitAES-CBC-BC"); encryptionCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec); return encryptionCipher.doFinal(plainText.getBytes()); } The decryption code, byte[] decryptedText = decrypt(cipherText, password.getBytes(), salt); private static byte[] decrypt(byte[] cipherText, byte[] password, byte[] salt) throws DataLengthException, IllegalStateException, InvalidCipherTextException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException { BlockCipher engine = new AESEngine(); CBCBlockCipher cipher = new CBCBlockCipher(engine); PKCS5S1ParametersGenerator keyGenerator = new PKCS5S1ParametersGenerator(new SHA256Digest()); keyGenerator.init(password, salt, 20); CipherParameters keyParams = keyGenerator.generateDerivedParameters(256); cipher.init(false, keyParams); byte[] decryptedBytes = new byte[cipherText.length]; int numBytesCopied = cipher.processBlock(cipherText, 0, decryptedBytes, 0); return decryptedBytes; }

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  • Android Update Layout Content

    - by GuyNoir
    I'm looking for a way to update a layout's content with a new view. Is there any way to easily do this. It would be similar to how tabs work, but I don't want to have to get into extending the current tab structure if I don't have to. The final result would be a few buttons that would switch the content in a specific linearlayout for each button. Any help?

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  • AWT Textfield behaves weird with MicroSoft JVM

    - by AKh
    Hi, I am facing a weird problem when using MicroSoft JVM to run my Applet. I have an AWT panel with 4 textfields which is added to a dialog box. Everything goes fine until I enter a decimal value into the textfield and close the dialog box. When i reopen the dialog box the textfield inside the panel with all the decimal digits (entered in the previous step) behaves weird. The decimal values along with the WHITE area inside the textfield moves to the left and hides the digits. When I click inside the textfield it becomes normal. The Panel earlier had gridlayout and I even tried changing it to gridbaylayout and still the problem persist. NOTE: All Development are pertained to JRE1.1 to compatibility with MS JVM If any can help me with this it would be a great help. Thanks in advance. . . . . public MyPanel(Dialog myDialog) { Panel panel = new Panel(); this.dialog = myDialog; //Previous code with grid layout /* panel.setLayout(new GridLayout2(4,2,2,2)); panel.add(new Label("Symbol:")); panel.add(symbolField = new TextField("",20)); panel.add(new Label("Quantity:")); panel.add( qtyField = new TextField()); panel.add(new Label("Price per Share:")); panel.add( costField = new TextField()); panel.add(new Label("Date Acquired:")); panel.add( purchaseDate = new TextField() );*/ GridBagLayout gridbag = new GridBagLayout(); System.out.println("######## Created New GridBagLayout"); GridBagConstraints constraints = new GridBagConstraints(); panel.setLayout( gridbag ); constraints = buildConstraints( constraints, 0, 0, 1, 1, 1.5, 1 ); constraints.anchor = GridBagConstraints.WEST; constraints.fill = GridBagConstraints.HORIZONTAL; panel.add( new Label("Symbol:"), constraints); constraints = buildConstraints( constraints, 1, 0, 1, 1, 1.5, 1 ); constraints.anchor = GridBagConstraints.WEST; constraints.fill = GridBagConstraints.HORIZONTAL; panel.add( symbolField = new TextField("",20), constraints); constraints = buildConstraints( constraints, 0, 1, 1, 1, 1.5, 1 ); constraints.anchor = GridBagConstraints.WEST; constraints.fill = GridBagConstraints.HORIZONTAL; panel.add( new Label("Quantity:"), constraints); constraints = buildConstraints( constraints, 1, 1, 1, 1, 1.5, 1 ); constraints.anchor = GridBagConstraints.WEST; constraints.fill = GridBagConstraints.HORIZONTAL; panel.add( qtyField = new TextField(), constraints); constraints = buildConstraints( constraints, 0, 2, 1, 1, 1.5, 1 ); constraints.anchor = GridBagConstraints.WEST; constraints.fill = GridBagConstraints.HORIZONTAL; panel.add( new Label("Price per Share:"), constraints); constraints = buildConstraints( constraints, 1, 2, 1, 1, 1.5, 1 ); constraints.anchor = GridBagConstraints.WEST; constraints.fill = GridBagConstraints.HORIZONTAL; panel.add( costField = new TextField(), constraints); constraints = buildConstraints( constraints, 0, 3, 1, 1, 1.5, 1 ); constraints.anchor = GridBagConstraints.WEST; constraints.fill = GridBagConstraints.HORIZONTAL; panel.add( new Label("Date Acquired:"), constraints); constraints = buildConstraints( constraints, 1, 3, 1, 1, 1.5, 1 ); constraints.anchor = GridBagConstraints.WEST; constraints.fill = GridBagConstraints.HORIZONTAL; panel.add( purchaseDate = new TextField(), constraints); .............. ......... }

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  • Drools flow architecture, Drools flow events with AND join nodes

    - by Shoukry K
    I have been evaluating a number of frameworks including jBPM and Drools flow for my application requirements. Lots of the opinions seem to be inclined towards Drools flow as its more flexible, knowledge oriented, easier to integrate with business rules, etc.. The application is some sort of an Email Campaign manager , where different customers can sign in, prepare (design) and launch email campaigns. The application should be able to do the following : 1- Receive a list of email addresses, send emails to each of these addresses starting from a certain date and during a certain time interval of the day , do some custom actions, and then wait for reply emails. 2- If a reply email is received and depending on the response text of the email , and depending on the time the email was received certain actions need to happen, web service calls need to take place, and error handling for these calls. 3- The application will manage and run many and different campaigns (different customers and different flows for each customer) at any point of time. The first question is : Is Drools flow the way to go about this? My main concerns are scalability, suspending, resuming flows, and long wait, and flows management. As you see from the requirements : There is a scheduling part : Certain flows need to be run at a certain point in time, they need to get suspended and then resumed. For example start sending emails starting on Dec 1st 2010 and send emails only in the time interval between 08:00 and 17:00 GMT. By then it might be that all subscribers have been sent emails, but it might not be the case, the process needs to (resume) on Dec 2nd and send a second batch, however certain (users) already received emails and they should be able to (continue at different stages of the flow) There are long wait states : Days or even weeks , i need to persist, suspend / resume and terminate flows (manage flows) External Events : This is where i got stuck first, i tried to put together a simple flow (see attached screenshot) See image http://img46.imageshack.us/img46/9620/workflowwithevents.png , there is a start node , connected to an action node, connected to a join. An event node is connected to a second action node, which is connected to the join. The join is an AND join , after the join there is an action and the end node. Here is the sample code i am using to launch the flow : KnowledgeBuilder builder = KnowledgeBuilderFactory .newKnowledgeBuilder(); builder.add(ResourceFactory.newClassPathResource("campaign.rf", CampaignsDroolsPoc.class), ResourceType.DRF); if (builder.hasErrors()) { KnowledgeBuilderErrors errors = builder.getErrors(); Iterator<KnowledgeBuilderError> iterator = errors.iterator(); while (iterator.hasNext()) { System.out.println(iterator.next().toString()); } } KnowledgeBase base = KnowledgeBaseFactory.newKnowledgeBase(); base.addKnowledgePackages(builder.getKnowledgePackages()); final StatefulKnowledgeSession ksession = base .newStatefulKnowledgeSession(); // KnowledgeRuntimeLoggerFactory.newConsoleLogger(ksession); ksession.getWorkItemManager().registerWorkItemHandler("Log", new SendSMSWorkItemHandler()); ProcessInstance startProcess = ksession.startProcess("flow"); System.out.println("Signaling event"); startProcess.signalEvent("ev1", "ev1"); System.out.println("Signaled"); ksession.fireUntilHalt(); I am noticing that the event get triggered, the action node connected to the event gets triggered, however things seem to get stuck at the join. The flow does not continue past the AND join and the flow seems to get stuck. The action following the node does not get triggered. I also went through the drools flow documentation , and all the example codes, however i didn't find anything there. In addition any hints about the way to go about architecting the solution, and implementing it would be great.

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  • Dependency Injection Constructor Madness

    - by JP
    I find that my constructors are starting to look like this: public MyClass(Container con, SomeClass1 obj1, SomeClass2, obj2.... ) with ever increasing parameter list. Since "Container" is my dependency injection container, why can't I just do this: public MyClass(Container con) for every class? What are the downsides? If I do this, it feels like I'm using a glorified static. Please share your thoughts on IoC and Dependency Injection madness. Thanks in advance. -JP

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  • how to prevent jsp tags from being reused after being classloaded

    - by mkoryak
    I have a problem where certain attributes in tag files stick around for the next time the tag is used. I think this is because the Tag class is being classloaded, and then that same instance is reused for every invocation. So attributes that i do not set in later invocations are not null like i would expect them to be, and contain stale values! I want this to not happen any more. Does anyone know what setting controls that in tomcat 6?

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  • How to build AndEngine in Android Studio?

    - by marcu
    I wanted to build AndEngine and andEnginePhysicsBox2DExtension from Anchor Center branch, but build failed. FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':andEngine:compileReleaseNdk'. > com.android.ide.common.internal.LoggedErrorException: Failed to run command: /home/mariusz/android/android-ndk/ndk-build NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/home/mariusz/Downloads/AndEngineApp/andEngine/build/intermediates/ndk/release/Android.mk APP_PLATFORM=android-17 NDK_OUT=/home/mariusz/Downloads/AndEngineApp/andEngine/build/intermediates/ndk/release/obj NDK_LIBS_OUT=/home/mariusz/Downloads/AndEngineApp/andEngine/build/intermediates/ndk/release/lib APP_ABI=all Error Code: 2 Output: /home/mariusz/android/android-ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/mariusz/Downloads/AndEngineApp/andEngine/build/intermediates/ndk/release/obj/local/armeabi-v7a/objs/andengine_shared//home/mariusz/Downloads/AndEngineApp/andEngine/src/main/jni/src/GLES20Fix.o: in function Java_org_andengine_opengl_GLES20Fix_glVertexAttribPointer:/home/mariusz/Downloads/AndEngineApp/andEngine/src/main/jni/src/GLES20Fix.c:9: error: undefined reference to 'glVertexAttribPointer' /home/mariusz/android/android-ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/mariusz/Downloads/AndEngineApp/andEngine/build/intermediates/ndk/release/obj/local/armeabi-v7a/objs/andengine_shared//home/mariusz/Downloads/AndEngineApp/andEngine/src/main/jni/src/GLES20Fix.o: in function Java_org_andengine_opengl_GLES20Fix_glDrawElements:/home/mariusz/Downloads/AndEngineApp/andEngine/src/main/jni/src/GLES20Fix.c:13: error: undefined reference to 'glDrawElements' collect2: ld returned 1 exit status make: *** [/home/mariusz/Downloads/AndEngineApp/andEngine/build/intermediates/ndk/release/obj/local/armeabi-v7a/libandengine_shared.so] Error 1 I'm using Android Studio version 0.86.

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  • Overlay only draws line between first 2 GPS points in Android

    - by LordSnoutimus
    Hi, I am experiencing an unusual error using ItemizedOverlay in Android. I am creating a GPS tracking device that plots a route between waypoints stored in a database. When I provide the first two sets of longitude and latitude points through the emulator in Eclipse, it draws a red line just how I want it, but if I send another GPS point, it animates to the point, but does not draw a line from the last point. public class MyOverlay extends ItemizedOverlay { // private Projection projection; private Paint linePaint; private Vector points; public MyOverlay(Drawable defaultMarker) { super(defaultMarker); points = new Vector<GeoPoint>(); //set colour, stroke width etc. linePaint = new Paint(); linePaint.setARGB(255, 255, 0, 0); linePaint.setStrokeWidth(3); linePaint.setDither(true); linePaint.setStyle(Style.FILL); linePaint.setAntiAlias(true); linePaint.setStrokeJoin(Paint.Join.ROUND); linePaint.setStrokeCap(Paint.Cap.ROUND); } public void addPoint(GeoPoint point) { points.addElement(point); } public void draw(Canvas canvas, MapView view, boolean shadow) { int size = points.size(); Point lastPoint = new Point(); if(size == 0) return; view.getProjection().toPixels(points.get(0), lastPoint); Point point = new Point(); for(int i = 1; i<size; i++){ view.getProjection().toPixels(points.get(i), point); canvas.drawLine(lastPoint.x, lastPoint.y, point.x, point.y, linePaint); lastPoint = point; } } @Override protected OverlayItem createItem(int arg0) { // TODO Auto-generated method stub return null; } @Override public int size() { // TODO Auto-generated method stub return 0; } }

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  • eclipse tomcat debug mode slow - pegs cpu

    - by andersonbd1
    Running Tomcat through eclipse works fine in non-debug mode, but not in debug mode. When I try to start the Tomcat server in debug mode, the console output looks fine for a while, but then starts slowing down and eventually just stops, pegging the cpu at 100%. I don't think it's relevant, but just in case - here's the console output right about when it starts slowing down and eventually stopping (by stopping I mean no more console output, but still 100% cpu). 2009-09-02 14:35:30,859 INFO NONE org.springframework.context.weaving.DefaultContextLoadTimeWeaver:72 - Found Spring's JVM agent for instrumentation 2009-09-02 14:35:49,562 INFO NONE org.springframework.beans.factory.support.DefaultListableBeanFactory:414 - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@ed889d: defining beans [... 2009-09-02 14:37:31,031 INFO NONE org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean:221 - Building JPA container EntityManagerFactory for persistence unit ... I tried everything I could think of to fix it: cleanesd tomcat working directory restarted eclipse restarted Windows refreshed/cleaned all projects I first had this problem last week using eclipse ganymede. I had been running fine in debug-mode for several months prior to this issue. I didn't make any significant changes to our project that would cause this. Eventually, I upgraded to eclipse galileo which solved my problem. Now 2 days later, I'm having the same problem in galileo. Like I said it works fine in non-debug mode. Any help is much appreciated. I should add that other things work in debug mode - for instance junit tests, so it is something specific to tomcat.

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  • Accessing Request object from custom JSP tags

    - by Byron
    I'm trying to make a set of custom tags that encapsulate form elements (markup and validation). There's a method given to retrieve the "Out" object easily: JspWriter out = getJspContext().getOut(); However I can't figure out how to get the request object. I want to be able to directly access the submitted form values from within the Tag class so that I can validate each field. The documentation is quite sparse, so I thought maybe I could use the JspContext object to somehow get the request attributes. But I don't understand the different scopes. System.out.println(getJspContext().findAttribute("field1")); always prints "null". Enumeration e = getJspContext().getAttributeNamesInScope(1); Looping through and printing out the enumeration just gives me a list of classes that don't exist: javax.servlet.jsp.jspOut javax.servlet.jsp.jspPage javax.servlet.jsp.jspSession javax.servlet.jsp.jspApplication javax.servlet.jsp.jspPageContext javax.servlet.jsp.jspConfig javax.servlet.jsp.jspResponse javax.servlet.jsp.jspRequest So is this even possible? If not, could anyone point me to a tag library that deals with form display and validation? I searched the internet for a couple hours and it seemed every single one was discontinued and I couldn't download them. Either that or suggest a better alternative for handling forms.

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  • How to get Cookies using HttpClient

    - by Sunil
    Hello I am using HttpClient to get Cookies but I am unable find any cookies.My Code is given below public class LoginTab { private Cookie[] cookies; HttpClient httpClient; HttpState httpState; HashMap postData; public LoginTab() { httpClient = new HttpClient(); httpState = new HttpState(); httpClient.getHttpConnectionManager(). getParams().setConnectionTimeout(300000); httpClient.setState(httpState); // RFC 2101 cookie management spec is used per default // to parse, validate, format & match cookies httpClient.getParams().setCookiePolicy(CookiePolicy.RFC_2109); postData= new HashMap(); } public String getMethod(String url) { GetMethod getMethod = new GetMethod(url); String pageSoure=""; try{ httpClient.executeMethod(getMethod); pageSoure=getMethod.getResponseBodyAsString(); extractUsefulPostData(pageSoure, postData); getMethod.releaseConnection(); }catch(Exception ex) { ex.printStackTrace(); } return pageSoure; } public static void main(String[]arg) { LoginTab loginTab= new LoginTab(); System.out.println(loginTab.getMethod("http://tab.com.au/")); Cookie [] cookies=loginTab.httpState.getCookies(); System.out.println(cookies.length); for(int i=0;i<cookies.length;i++) System.out.println(cookies[i]); } } Please suggest me where is the mistake. Thanks in advance

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  • How to get Cookies using HttpClient

    - by Sunil
    Hello I am using HttpClient to get Cookies but I am unable find any cookies.My Code is given below public class LoginTab { private Cookie[] cookies; HttpClient httpClient; HttpState httpState; HashMap postData; public LoginTab() { httpClient = new HttpClient(); httpState = new HttpState(); httpClient.getHttpConnectionManager(). getParams().setConnectionTimeout(300000); httpClient.setState(httpState); // RFC 2101 cookie management spec is used per default // to parse, validate, format & match cookies httpClient.getParams().setCookiePolicy(CookiePolicy.RFC_2109); postData= new HashMap(); } public String getMethod(String url) { GetMethod getMethod = new GetMethod(url); String pageSoure=""; try{ httpClient.executeMethod(getMethod); pageSoure=getMethod.getResponseBodyAsString(); extractUsefulPostData(pageSoure, postData); getMethod.releaseConnection(); }catch(Exception ex) { ex.printStackTrace(); } return pageSoure; } public static void main(String[]arg) { LoginTab loginTab= new LoginTab(); System.out.println(loginTab.getMethod("http://tab.com.au/")); Cookie [] cookies=loginTab.httpState.getCookies(); System.out.println(cookies.length); for(int i=0;i<cookies.length;i++) System.out.println(cookies[i]); } } Please suggest me where is the mistake. Thanks in advance

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  • Not getting a response when using Android Async HTTP (from loopj)

    - by conor
    I am using the Async Http library from loopj.com and also the sample code from the site. The problem is that when the request is made I don't get a response. I have even overridden the onFinish() function which isn't getting fire either. I am using the sample code from their site which is as follows: import com.loopj.android.http.AsyncHttpClient; import com.loopj.android.http.AsyncHttpResponseHandler; Log.v("bopzy_debug", "Testing HTTP Connectivity"); System.out.println("123"); AsyncHttpClient client = new AsyncHttpClient(); client.get("http://www.google.com", new AsyncHttpResponseHandler() { @Override public void onSuccess(String response) { Log.v("bopzy_debug", response); } @Override public void onFinish() { Log.v("bopzy_debug", "Finished.."); } }); Any ideas on how to solve would be greatly appreciated, not really sure what is going on here.

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  • Multi-file, simultaneous, drag-and-drop file uploads in the browser without ActiveX?

    - by qiq
    I like how Windows Skydrive lets you drag files into Internet Explorer where an ActiveX component uploads those files to your Skydrive account in a queue. This avoids the cumbersome traditional HTML approach where you present multiple "Browse" buttons and the user has to select individual files one by one, click Upload and then select more files after the first batch completes. What I'm not sure is how the same effect could be achieved in a web app without ActiveX. Any suggestions?

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  • Code assist in (jsp /jstl) view for Spring MVC model objects in Eclipse

    - by Bjorn Thor Jonsson
    In Spring MVC when placing an object in the view model like so: public String getUser( Model model ) { //...fetch user... model.addAttribute( "user", user ); return "viewName"; } and accessing it's values in the JSP / JSTL view like this: ... <p> ${user.name} </p> ... I'm wondering if it is possible to have code assist for the user object in the view? The IDE I'm using is MyEclipse but it would be interesting to know if this is possible in other editors as well. Thanks.

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  • Performance of if statement versus switch statement

    - by behrk2
    Hi Everyone, I have an if statement with 16 cases (I am checking the state of four boolean variables). Would there be any value in trying to implement this differently, with nested switch statements perhaps? What is the actual performance gain of a switch statement over an if statement? Thanks!

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  • How to enable HTTP response caching in Spring Boot

    - by Samuli Kärkkäinen
    I have implemented a REST server using Spring Boot 1.0.2. I'm having trouble preventing Spring from setting HTTP headers that disable HTTP caching. My controller is as following: @Controller public class MyRestController { @RequestMapping(value = "/someUrl", method = RequestMethod.GET) public @ResponseBody ResponseEntity<String> myMethod( HttpServletResponse httpResponse) throws SQLException { return new ResponseEntity<String>("{}", HttpStatus.OK); } } All HTTP responses contain the following headers: Cache-Control: no-cache, no-store, max-age=0, must-revalidate Expires: 0 Pragma: no-cache I've tried the following to remove or change those headers: Call setCacheSeconds(-1) in the controller. Call httpResponse.setHeader("Cache-Control", "max-age=123") in the controller. Define @Bean that returns WebContentInterceptor for which I've called setCacheSeconds(-1). Set property spring.resources.cache-period to -1 or a positive value in application.properties. None of the above have had any effect. How do I disable or change these headers for all or individual requests in Spring Boot?

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  • in x64 Windows is there a way to run a Runtime.exec() process avoiding 'Registry redirection'

    - by raticulin
    Our app runs in jvm 32 bit, even when in windows x64. Now, at some point, I need to access some registry values, for example HKEY_LOCAL_MACHINE/SOFTWARE/mycomp. I do this by executing cmd /C reg query HKEY_LOCAL_MACHINE\SOFTWARE\mycop from Runtime.exec() and parsing the output. This works fine when running on windows 32b, the problem is when on x64, I cannot find the key, as the shell I run is a 32 bit process, and due to Registry Redirection I would get the key if it was on HKEY_LOCAL_MACHINE/SOFTWARE/wow6432Node/mycop Any idea?

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  • Drag and drop with an image

    - by DJClayworth
    I need to create a drag and drop system in swing where an image of the thing being dragged is attached to the cursor during the drag. In theory this is achieveable with public Icon getVisualRepresentation(Transferable t) but there appears to be a long standing bug (here) that means this method is never called. I know I can do it by implementing my own DnD system with DragSource etc., but does anyone know of an easier workround that will get me what I need?

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  • How to express loops in Communication Diagrams?

    - by devoured elysium
    I'd like to know how to express in a Communication Diagram something like: foreach (User user in UsersCatalog) { list.add(user.getId()); } I actually have something like the following (Utilizador = User) but as you'll notice it does not represent well the fact that I am doing something like a loop. How can I accomplish this?

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  • Calling next value of a sequence in jpa

    - by Javi
    Hello, I have a class mapped as an Entity to persist it in a database. I have an id field as the primary key so every time the object is persisted the value of the id is retrieved from the sequence "myClass_pk_seq", a code like the following one. @Entity @Table(name="myObjects") public class MyClass { @Id @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="sequence") @SequenceGenerator(name="sequence", sequenceName="myClass_pk_seq", allocationSize=1) @Column(name="myClassId") private Integer id; ... } I need to get the next value of the sequence myClass_pk_seq to reserve that value (get the next value of the sequence and the current value is incremented), but without saving the object. How can I call the next value of a sequence when it's defined like this? Thanks.

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  • mysql query using jdbc

    - by S.PRATHIBA
    Hi all, I have the following table: Service_ID feedback 31 1 32 1 33 1 1 I have the sample code to find the sum: ResultSet res = st.executeQuery("SELECT Service_ID,SUM(consumer_feedback) FROM consumer5 group by Service_ID"); while (res.next()) { int data=res.getInt(1); System.out.println(data); System.out.println("\n\n"); int c1 = res.getInt(2); e[m]=res.getInt(2); System.out.println("\n \n m is "+m+" e[m] is "+e[m]); if(e[m]<0) e[m]=0; m++; System.out.print(c1); System.out.println("\t\t"); } i have to get the output as 31 1 32 1 33 1 I am getting it.But for my project i have 34,35 also.I should get theoutput as 31 1 32 1 33 1 34 0 35 0

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