exception-handling

问题 Question: I catch generally unhandled exceptions with AddHandler System.AppDomain.CurrentDomain.UnhandledException, AddressOf OnUnhandledException The problem now is, with this exception handler Public Sub OnUnhandledException(ByVal sender As Object, ByVal e As UnhandledExceptionEventArgs) Console.WriteLine(e.ExceptionObject.ToString()) Console.WriteLine("Press Enter to continue") Console.ReadLine() 'Environment.Exit(1) End Sub program execution still throws the exception if I don't exit the

问题 I have implemented 2 payment gateways in my app (paypal and datatrans). In both gateways payment happens on gateway site i.e. user is redirected to payment gateway site where he pays and then redirected back to our site. I have identified some scenarios where there is some issue in entire payment flow. E.g. lost internet connection after payment and so order is not placed but money got debited from user's account PayPal sent response but application got exception and so user did not get

问题 I'm a Beginner in Android Development. I just released an app but found some glitches, so I thought of correcting those glitches by creating a new Android project with the same package name as that of the released app. But once I finished with the update app, This app is not running on phone(debugging). Says "Unfortunately thisApp has Stopped." And also im trying to incorporate adMob this time. Please help me because I have to publish this asap. Here's the Logcat once the app crashes : 08-11

问题 This is my mule flow: HTTP => Logger => SOAP (CXF) => Until Successful [ JAVA ] => LOGGER Spring : <spring:beans> <spring:bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <spring:property name="locations"> <spring:list> <spring:value>test.properties</spring:value> </spring:list> </spring:property> </spring:bean> <spring:bean id="testIntegration" class="x.x.x.IntegrationClass" init-method="init"> <spring:property name="url" value="$

问题 I'm trying to handle all application exceptions within global.asax for an MVC 3 project and whilst everything is working correctly within Cassini, as soon as I deploy to IIS 7.5, IIS starts taking control away from my application and handles many exceptions itself. This has the consequences of bypassing my custom logging and also returning ugly views. I have a similar approach to Darin's answer to this question. Here's what I'm using at the moment. protected void Application_Error(object

问题 I'm using JSF 2 and I'm getting some exception while I'm using some web service and I want to catch that exception and display the message on my .xhtml page. How can I do that? 回答1: You can use the try-catch block to catch and handle the exception. You can use FacesContext#addMessage() to add a faces message to the faces context. You can use <h:messages> to display faces messages. So, something like this in the bean: try { data = yourWebService.retrieve(); } catch (YourWebServiceException e)

问题 According to GOTW #56, there is a potential classic memory leak and exception safety issues in the following code: // In some header file: void f( T1*, T2* ); // In some implementation file: f( new T1, new T2 ); The reason is that when we new T1 , or new T2 , there might be exceptions thrown from the classes' constructors. Meanwhile, according to the explanation: Brief recap: An expression like "new T1" is called, simply enough, a new-expression. Recall what a new-expression really does (I'll

问题 I'm getting into troubles to capture and retrieve the MySQL Error codes and messages using Laravel 5.2 through the DB Facade with the select method. What I want to do is to select/call a MySQL function that inserts a simple row in a table with a parameter. However what if the parameter in empty for a column that can't be null? MySQL throws an error ( Error Code: 1048 ). The problem is that I'm not getting any error/exception in Laravel in those situations and I can't know if the insert

问题 What is active_record doing to the signal processes under windows (I don't see this with the same versions on the mac) that causes it to behave so strangely? For instance: require 'rubygems' trap("INT"){puts "interrupted"} puts __LINE__ sleep 5 require 'active_record' trap("INT"){puts "interrupted again"} puts __LINE__ sleep 5 When I run the above code (ruby 1.8.6, gem 1.3.1, activerecord 2.2.2,) I can hit ^C as many times as I like during the first sleep, but the first interrupt after the

问题 I have been looking for a facility to exchange two items with a strong exception guarantee. That is; to have the exchange proceed totally, or leave the target in the initial state in the face of exceptions. Is there anything included in the current standard that allows this, I have not been able to find anything, although it appears easy to write. What I have below is a version I put together to try out what I am looking for, however it is noexcept, which is more than my requirement of "the