Programming VIP

catalogue Reasons for using AOP (Introduction to AOP) Use of AOP Enable AOP support Writing facet classes and test methods Write slice method @Before @After @AfterThrowing @AfterReturning @Around Reasons for using AOP (Introduction to AOP) We know that spring has two cores, IOC (inversion of contro ...

The first 3 chapter AOP Aspect oriented programming AOP brief introduction AOP ( Aspect Orient Programming ), aspect oriented programming. Aspect oriented programming is considered from a dynamic point of view Sequence operation process. AOP The bottom layer is realized by using dynamic agent mode ...

In fact, AOP_ The biggest difference between AspectJ programming and traditional AOP programming is that writing an Aspect supports multiple Advice and multiple pointcuts. And we write AOP_Aspctj does not need to inherit any interfaces, unlike traditional AOP.Pre notification is performed before running our proxy method.Advance notice ha ...

catalogue 1, Agent mode 2, Static proxy (1) Static proxy (2) Simple implementation of static agent 3, Dynamic agent (1) Dynamic agent (2) Simple implementation of dynamic agent 4, Principle analysis of dynamic agent 5, InvocationHandler interface and Proxy class 6, Comparison and summary of JDK dynamic agent ...

The framework brings a lot of convenience to our development, and the use of many previously learned knowledge will be slightly different in the framework. This article mainly describes the use of filters and interceptors in the framework, and analyzes the relationship and differences between filters, interceptors and AOP filter The function ...

Class 1 loading, connection and initialization Class 1.1 loading process When a program uses a class, if the song class has not been loaded into memory, the system will initialize the class through the steps of loading, connecting and initialization. Generally, the class loader does not need to wait until the first use to load objects. Th ...

background In the project, the method provided by a third-party jar package cannot meet the requirements, and the jar package method needs to be enhanced. Spring's custom facet is used to enhance the method. The code is as follows: @Aspect @Component public class SendMessageAspect{ public SendMessageAspect(){ System.out.println(" ...

Java agents are divided into static agents and dynamic agents. Dynamic agent is divided into JDK dynamic agent and cglib dynamic agent. In terms of various performance tests, JDK is better than cglib. It is strongly recommended to master the agent mode, interview high-frequency questions, and use the concept of aspect oriented programming (A ...

If there is no aop, when doing log processing, we will add log processing in each method, such as But the processing code is the same in most days. In order to realize code reuse, we may separate log processing into a new method. However, we still have to insert these methods manually. But these two methods are strongly coupled. If we don ...

Let's talk about the background first. Recently, the focus of work is on the hospital, making the hospital system. Because our company is a platform, one system is single sign on, which needs to synchronize all accounts of other systems in the hospital. If the single sign on system account changes, the corresponding account information will be ...