exception

问题 I have a collection called dbUsers of type IQueryable These are pulled from a linqtosql database context i.e. IQueryable<Data.LinqToSQL.User> dbUsers = DBContext.Users Calling ToList on this object: IList<Data.LinqToSQL.User> users = dbUsers.ToList(); Results in an exception: ExecuteReader requires an open and available Connection. The connection's current state is connecting. What am I doing wrong here? Cheers 回答1: see if this works for you: IList<Data.LinqToSQL.User> users = (from u in

问题 I have some experience with Python console applications and now trying to start with Qt for Python (Qt 5.12, PySide2). Actually I'm trying some basic tutorials to understand how it should work. So, I created very simple view.qml : import QtQuick 2.0 import QtQuick.Controls 2.13 ApplicationWindow { visible: true Button { id: button text: qsTr("ClickOnMe") } Connections { target: button onClicked: con.say_hello() } } and have following python code to work with it: from PySide2.QtCore import

问题 This is odd, the class works fine until after logging out of the game but when logging back in it sends the exception. Here's the child class package com.rs.game.player.quests.impl; import java.io.Serializable; import com.rs.game.player.Player; import com.rs.game.player.dialogues.Dialogue; import com.rs.game.player.quests.Quest; /** * Handles the cooks assistant quest. * * @author Thomas Le Godais <thomaslegodais@live.com> * */ @SuppressWarnings("serial") public class CooksAssistant extends

问题 How can I hide sensitive details in a java exception? Is it only possible to do by wrapping the exception with another? If so, how exactly does this hide the exception because if I put a watch on the exception @ debug time, I'd be able to see all information on the old exception and the one I am wrapping it with, no? BTW, this is not like ASP.NET where I can call Response.Write("") to write a friendly string to the webpage/response stream. This is a java plugin, in a java web-based app (the

问题 I am using Loki SingletonHolder in combination with Loki Factory in my project. The following example basically consists of two lines of code in the try-block to 1.) use the factory 2.) then throw an exception. #include <iostream> #include <loki/Singleton.h> #include <loki/Factory.h> class AbstractBase {}; class ConcreteChild : public AbstractBase {}; class TestFactory: public Loki::SingletonHolder< Loki::Factory<AbstractBase, std::string> > {}; template <class T> T* createNew() { return new

问题 For webservices we usually generate java beans with the maven-jaxb2-plugin and use JAXB2 marshalling in Spring. I am wondering how to handle (SOAP-)faults that are declared in the WSDL/XSD best. In the application I would like to use Java exceptions that are marshalled to the faults. Is this possible? I haven't found a way to generate exceptions with the sourcecode generation of the maven-jaxb2-plugin. Thanks! Update: I'd like to use spring-ws. But I guess the main problem is how to generate

问题 I have simple aspx code. When I run the aspx page with local server(Visual Studio Development Server) all works fine. But when I run it on my domain I get the following exception. Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine. Details: To enable the details

问题 I have simple aspx code. When I run the aspx page with local server(Visual Studio Development Server) all works fine. But when I run it on my domain I get the following exception. Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine. Details: To enable the details

问题 So, I've gone to open eclipse like I normally do (clicking the icon in my taskbar) after about a month of not working, and... nothing. There is a bit of hard drive activity but no processes actually stay alive, if they start at all. After investigating further I found that the splash screen would come up if I ran the executable as Administrator (I'm running Windows 7 by the way), but before the progress bar appeared it crashed generating a file named hs_err_pid2620.txt containing the

问题 This question already has answers here : how to throw an IOException? (7 answers) Closed 6 years ago . Code: catch (IOException e) { LOGGER.error("IOException exception happened"); //now need throw again the same exception to be //catched in the upper method } But when I try simply: catch (IOException e) { LOGGER.error("IOException exception happened"); //now need throw again the same exception to be //catched in the upper method throw e; } Eclipse supposes to me put "throw e" in try catch