exception

问题 I'm getting the DbUpdateConcurrencyException error even though I am passing the OrderID to the OrderItem form. It works on Create and Delete , but it keeps kicking me out for Edit . Can anyone please suggest a fix or let me know if I'm doing something wrong? I get this Concurrency Exception Error : System.Data.Entity.Infrastructure.DbUpdateConcurrencyException was unhandled by user code HResult=-2146233087 Message=Store update, insert, or delete statement affected an unexpected number of rows

问题 I am trying to decrypt the data using RSA Algorithm. While doing the decryption, I am getting an exception.That is, java.security.NoSuchAlgorithmException: Cannot find any provider supporting RSA/ECB/PKCS5Padding at javax.crypto.Cipher.getInstance(DashoA13*..) How to solve this exception? Currently, I am using java version "1.6.0_26" . 回答1: It's a typo. The correct name for RSA with PKCS #1 v1.5 padding is "RSA/ECB/PKCS1Padding". Generally, it is a good idea to compare with a list of

问题 I have a Custom class, InvalidCodeException in Project A public class InvalidCodeException : Exception { public InvalidCodeException () { } public InvalidCodeException (string message) : base(message) { } public InvalidCodeException (string message, Exception innerException) : base(message, innerException) { } } a WCF service in Project B. And a client in Project C. Project A is referenced in Project B and C. I am throwing InvalidCodeException from Project B and catching in Project C. Problem

问题 I want to make a connection to the remote database ssh, in my java program, so I write a java code for this, I can ssh to the database server from my code but I can't access to the database, this is my out put which contains the error : identity added session created. session connected..... shell channel connected.... db Method... try-catch java.lang.ClassNotFoundException: com.mysql.jdbc.Driver at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass

问题 I've started getting the following exception while debugging a 32bit MFC C++ app under VS2010 SP1, Windows 7 64. While I can easily ignore it, I'm just wondering what it is. First-chance exception at 0x751eb9bc in SCCW.exe: 0x80010108: The object invoked has disconnected from its clients. A similar question and a google search suggest its automation related, and while my app supports automation, it isn't doing anything automation related at the time. The stack frame for the active thread does

问题 Hi there I am learning OOP by writing a dummy Library management project in Java. In serachBook(), if book is found in ArrayList, it returns book object, if not found it throws custom exception BookNotFound. Question 1: Should it just return null and check the returned value at calling code for null or throw custom exception BookNotFound. Currently I believe BookNotFound is appropriate and am currently doing it. However I am finding one more difficulty: In addbook(), I first call searchBook()

问题 I was updating my project from laravel 4.2 to laravel 5.0. But, after I am facing this error and have been trying to solve it for the past 4 hours. I didn't face any error like this on the 4.2 version. I have tried composer dump-autoload with no effect. As stated in the guide to update, I have shifted all the controllers as it is, and made the namespace property in app/Providers/RouteServiceProvider.php to null . So, I guess all my controllers are in global namespace, so don't need to add the

问题 I am having an issue with a user where my application just throws and unhandled exception for no particular reason. I am not sure what is causing this as the application itself does not check nor handle anything remotely related to and Input Language change event. The exception is pretty vague as it stands with no inner exception or any other information that tells what is going on as it seems to be an arithmetic overflow exception. Here is the exception message and stack trace: Type: System

问题 I have wrote my first java applet. It basically loads some images from my Django webserver and then the user can modify them. I developed it in Eclipse, and I had no problems at all. When I tried it with a test page, on the java console come out this error: java.security.AccessControlException: access denied (java.net.SocketPermission www.hyros.net resolve) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:374) at java.security.AccessController.checkPermission

问题 I have wrote my first java applet. It basically loads some images from my Django webserver and then the user can modify them. I developed it in Eclipse, and I had no problems at all. When I tried it with a test page, on the java console come out this error: java.security.AccessControlException: access denied (java.net.SocketPermission www.hyros.net resolve) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:374) at java.security.AccessController.checkPermission