dispatcher

CGLIB介绍与原理(部分节选自网络) 一、什么是CGLIB? CGLIB是一个功能强大，高性能的代码生成包。它为没有实现接口的类提供代理，为JDK的动态代理提供了很好的补充。通常可以使用Java的动态代理创建代理，但当要代理的类没有实现接口或者为了更好的性能，CGLIB是一个好的选择。 二、CGLIB原理 CGLIB原理：动态生成一个要代理类的子类，子类重写要代理的类的所有不是final的方法。在子类中采用方法拦截的技术拦截所有父类方法的调用，顺势织入横切逻辑。它比使用java反射的JDK动态代理要快。 CGLIB底层：使用字节码处理框架ASM，来转换字节码并生成新的类。不鼓励直接使用ASM，因为它要求你必须对JVM内部结构包括class文件的格式和指令集都很熟悉。 CGLIB缺点 ：对于final方法，无法进行代理。 三、CGLIB的应用 广泛的被许多AOP的框架使用，例如Spring AOP和dynaop。Hibernate使用CGLIB来代理单端single-ended(多对一和一对一)关联。 四、CGLIB的API 1、Jar包 ： cglib-nodep-2.2.jar：使用nodep包不需要关联asm的jar包,jar包内部包含asm的类. cglib-2.2.jar：使用此jar包需要关联asm的jar包,否则运行时报错. 2、CGLIB类库： 由于基本代码很少

In a WPF 4.5 application, I don't understand why the UI is blocked when I used await + a task : private async void Button_Click(object sender, RoutedEventArgs e) { // Task.Delay works great //await Task.Delay(5000); double value = await JobAsync(25.0); MessageBox.Show("finished : " + value.ToString()); } private async Task<double> JobAsync(double value) { for (int i = 0; i < 30000000; i++) value += Math.Log(Math.Sqrt(Math.Pow(value, 0.75))); return value; } The await Task.Delay works great, but the await JobAsync blocks the UI. Why ? Thank you. Try this: private Task<double> JobAsync(double

I need to generate a print preview (a long one) using wpf UI elements like FixedDocument, FlowDocument, PageContent, BlockUIContainer and all those. To keep my UI responsive i'm doing this part on a separate Thread class thread (BackgroundWorker won't work since i need an STA thread). Everything is OK upto this point. But after displaying the print preview now i need to print, and clicking Print icon on the generated preview throws the infamous "The calling thread cannot access this object because a different thread owns it." exception. So, is there any way around? EDIT (CODE): Dispatcher

spring就是一个依赖注入框架，所有的内容都是关于bean的定义及其依赖关系 定义Spring Beans的第一步是使用正确的注解@Component或@Service或 @Repository 但是，Spring不知道你定义了某个bean除非它知道从哪里可以找到这个bean ComponentScan做的事情就是告诉Spring从哪里找到bean 由你来定义哪些包需要被扫描。一旦你指定了，Spring将会将在被指定的包及其下级包(sub packages)中寻找bean -- 扫描一个包 定义@CoponentScan(“com.demo”) 这么做扫描的范围扩大到整个父包com.demo -- 扫描两个包 定义分别扫描两个包 @ComponentScan({“com.demo.springboot”,”com.demo.somethingelse”}) 有的时候你回遇到这样的错误 WARNING: No mapping found for HTTP request with URI [/spring-mvc/login] in DispatcherServlet with name ‘dispatcher’ WARNING: No mapping found for HTTP request with URI [/list-todos] in

Why does this not work? What I am trying to do: I need a way to run specific methods in a specific thread that lives on till the end of the program. My other possible options: As I understand a possible way to do it would be to implement a queue. Into which I could push in methods I want to be run in the specific thread. In the specific thread, I would be spinning and sleeping / monitor.pulse to see if there are delegates waiting to be run in the queue. My objective: Is to avoid all the hardwork to create the delegate queue, maintain lock etc. It appears that a ready made solution exists in

First a bit of background: I have a WPF application, which is a GUI-front-end to a legacy Win32-application. The legacy app runs as DLL in a separate thread. The commands the user chooses in the UI are invoked on that "legacy thread". If the "legacy thread" finishes, the GUI-front-end cannot do anything useful anymore, so I need to shutdown the WPF-application. Therefore, at the end of the thread's method, I call Application.Current.Shutdown() . Since I am not on the main thread, I need to invoke this command. However, then I noticed that the Dispatcher also has BeginInvokeShutdown() to

I wrote code in WPF. Firstly, I wrote a separate project to test work with a COM port device, and it worked well. Next I decided to integrate it in another project, but I get an error. I didn't change the code; I am just copied it into a new code file. This code works well: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation;