exception

问题 When i click to deploy the application on google app engine in netbeans ,these are the error messages produced. Let me tell you that initially, probably i entered the wrong password and the application failed to deploy. But now when i click to deploy the application it doesn't ask me the email or the password. Anyway how can i resolve these errors ? Reading application configuration data... Bad configuration: appengine-web.xml does not contain a <threadsafe> element. See http://code.google

问题 When i click to deploy the application on google app engine in netbeans ,these are the error messages produced. Let me tell you that initially, probably i entered the wrong password and the application failed to deploy. But now when i click to deploy the application it doesn't ask me the email or the password. Anyway how can i resolve these errors ? Reading application configuration data... Bad configuration: appengine-web.xml does not contain a <threadsafe> element. See http://code.google

问题 I've update Entity Framework to 6.0 and now I'm getting an exception that I can't figure out. An error occurred creating the configuration section handler for entityFramework: The provider for invariant name 'System.Data.SqlClient' is specified multiple times in the application configuration. The invariant name must be unique for each configured provider. (C:\inetpub\wwwroot\scrape\Scrape\web.config line 106) The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception.

问题 Should exception classes be part of the class which may throw them or should they exist on a higher level? For example : class Test { public: class FooException: public ExceptionBase { }; void functionThrowingFooException(); }; or class FooException: public ExceptionBase { }; class Test { public: void functionThrowingFooException(); }; ( functionThrowingFooException() is the only function to ever throw a FooException ) 回答1: Exceptions really model error conditions. Are those specific to each

问题 Can someone please explain the difference between the behavior in ghci of the following to lines: catch (return $ head []) $ \(e :: SomeException) -> return "good message" returns "*** Exception: Prelude.head: empty list but catch (print $ head []) $ \(e :: SomeException) -> print "good message" returns "good message" Why isn't the first case catching the exception? Why are they different? And why does the first case put a double quote before the exception message? Thanks. 回答1: Let's examine

问题 I have installed the sfErrorNotifierPlugin . When both options reportErrors/reportPHPErrors reportPHPWarnings/reportWarnings are set to false, everything is ok. But I want to catch PHP exceptions and warnings to receive E-mails, but then all my tasks fail, including clear-cache. After few hours of tests I'm 100% sure that the problem is with set_exception_handler/set_error_handler. There's a similar question: sfErrorNotifierPlugin on symfony task but the author there is having problems with a

问题 This question already has answers here : How to handle exception raised in linq (2 answers) Closed 3 years ago . I'm testing the method below and I realized that when I enter wrong file name, the error gets caught but when I don't have an element on the position specified, the error of IndexOutOfBounds crashes the program. The latter goes also for converting errors. private static IEnumerable<Thing> Initialize() { try { string[] things = System.IO.File.ReadAllLines("things.txt"); return

问题 when declaring a methods with "IllegalAccessException" eclipse forces me to declare the method as throwing an exception public void a() throws IllegalAccessException { if(x == 1){ throw new IllegalAccessException("TEST); } } and in method b that uses "IllegalStateException" i dont need to declare the method as throw an exception public void b() { if(x == 1){ throw new IllegalStateException("TEST); } } what is the different between thous exception that one forces me tho declare the method that

问题 I was reading a couple of articles a while back which I think described a behaviour where you can, in a .net application (specifically VB.net), allow an exception to occur, and then handle it in some kind of application-level exception handler, as opposed to within a Try/Catch block. My google-fu is weak at the moment, so I'm not having much luck guessing what this feature is called in order to find information about it. If this rings a bell for any of you, can you point me in the right

问题 I posted a question about using Messages versus Fault Exceptions to communicate business rules between services. I was under the impression it carried overhead to throw this exception over the wire, but considering it's just a message that get serialized and deserialized, they were in fact one and the same. But this got me thinking about throwing exceptions in general or more specifically throwing FaultExceptions. Now within my service, if i use throw new FaultException to communicate a