Programmer Think

I Implementation mode of scheduled task Implementation method of scheduled task: Java comes with Java util. Timer class, which allows you to schedule a Java util. TimerTask task. In this way, you can make your program execute at a certain frequency, but it can't run at a specified time. Generally used less, this article will not be introduced ...

prefaceYou may have seen the spring transaction failure scenario in many articles, so let's take a look at the water today to see if you can harvest something different. Go straight to the topicspring transaction failure scenarios and reasons1. Scenario 1: the service is not hosted to springpublic class TranInvalidCaseWithoutInjectSpring { ...

1, Role inheritance Generally speaking, there are relationships between roles, such as ROLE_admin generally has the authority of admin and user. So how to configure this role inheritance relationship? In Spring Security, developers only need to provide a role hierarchy. for example SpringBoot_ Management (II) As an example, assume ROLE_dba ...

Function construction and sorting 1. Import jar package 2. Add file parser 3. Successfully set up the login success interface 4. Jump to the add interface through the "add Avatar" function of the interface 5 add the necessary Ajax file upload JS component 6. Realize the upload function and deploy the local gallery to the Tom ...

prefaceSpring, just as its name, brings spring to developers. Spring is a framework designed to solve the complexity of enterprise application development. Its design concept is to simplify development.The core idea of Spring framework is:IOC (inversion of control): that is, transfer the control of creating objects, and transfer the control of ...

SpringMVC Interceptor Interceptor for Spring MVC is similar to Filter for Servlet. It is mainly used to intercept user's requests and handle them accordingly. It is often used for privilege validation, logging request information, determining whether user is logged in, etc. Differences between interceptors and filters Interceptor SpringMVC c ...

01spring MVC brief introduction and use 1. What is MVC? MVC is the abbreviation of model, view and controller. It is a software design specification. It is to organize code by separating business logic, data and display. The main function of MVC is to reduce the two-way coupling between view and business logic. MVC is not a design pattern, MV ...

In the previous article Analysis of the whole process of using hystrix from feign In, the workflow of springboot startup is explained in detail through a figure. I haven't enjoyed it yet. Today, I will analyze the instantiation process of beans and how spring solves circular dependency in detail. The following figure related to bean instantiati ...

Spring Transaction learning II. Spring Transaction management Record the learning of Spring and database things. The learning of Spring things here is in the form of full annotation Mind map: 1. Configure transaction manager In the configuration of Spring annotation starting things, if you want to enable things, you need to co ...

Condition true is returned if the condition is met, and false is returned if the condition is not met @FunctionalInterface public interface Condition { boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata); } Several sub interfaces and classes Condition has several sub interfaces and classes, and its functions are exte ...