Programming VIP

1, Introduction to MDC MDC (Mapped Diagnostic Context) is a function provided by log4j, logback and log4j2 to facilitate logging under multi-threaded conditions. MDC can be regarded as a hash table bound to the current thread, and key value pairs can be added to it. The content contained in MDC can be accessed by code executed in the same thre ...

introduce Official website Introduction of Thymeleaf is a modern server-side Java template engine for both web and standalone environments. Thymeleaf's main goal is to bring elegant natural templates to your development workflow — HTML that can be correctly displayed in browsers and also work as static prototypes, allowing for stronger ...

Spring framework learning notes Note download: power node official website Video viewing address https://www.bilibili.com/video/BV1nz4y1d7uy 1, IOC control reversal 1.1 general IoC (Inversion of Control) is a concept and an idea. It refers to handing over the call right of the object directly controlled by the program code to the container, and ...

Spring transaction management Spring transactions are divided into two types: programmatic transactions and declarative transactions. 1. Programming services Program the transaction, obtain the TransactionTemplate object, and then control the transaction submission and rollback DAO @Component public interface DemoDao { @Insert("inse ...

catalogue 1, spring environment modification 2, Bean object underlying implementation (rough) 1, spring environment modification 1. Modify the version number and delete redundant services 2. Add dependency <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> ...

What is circular dependency? Very simply, object A depends on object B, and object B depends on object A. For example: //A relies on B class A{   public B b; } //B relies on A class B{   public A a; } If Spring is not considered, circular dependency is not a problem, because it is normal for objects to depend on each other. For example: A  ...

scene Take over an old project: Start with POM xml ...slightly <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.2.4.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> ...

1, Spring Boot and tasks 1.1 asynchronous tasks In Java applications, in most cases, interactive processing is realized through synchronization; However, when dealing with interaction with third-party systems, it is easy to cause slow response. Before, most of them used multithreading to complete such tasks. In fact, in spring 3 After X, ...

Written earlier, this blog is a transcript of reading Inside spring Technology. Combination Chapter 2 2.2 Design and implementation of IoC container series: BeanFactory and ApplicationContext IoC Container Series for 2.2.1 Spring As an IoC container, the functional specification is designed as an excuse class, BeanFactory, which reflect ...

4.1 writing of yml and properties As mentioned above, there are two commonly used configuration files in spring: yml and properties. Both are named after application and are usually placed in the resources folder. yml uses indentation to reflect hierarchical management, while properties uses indentation In the form of. There is no difference b ...