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1. Important core interfaces 1.1 resource interface Inheritance system The Resource interface represents a Resource class, which is essentially an InputStream. It is used to read a configuration file and encapsulate it into a Resource. 1.2BeanDefinition interface BeanDefinition inheritance system According to the English meaning, bean def ...

preface advantage It can make the operation of real characters more pure! Don't pay attention to some public businessThe public business is handed over to the agent, which realizes the division of businessWhen the public business is expanded, it is convenient for centralized management Disadvantages: A real role will produce an agent, doubl ...

Three notes @Cacheable can be marked on a method or a class. When marked on a method, it means that the method supports caching. When marked on a class, it means that all methods of the class support caching. For a method that supports caching, spring will cache its return value after it is called to ensure that the next time the method is ...

maven dependency <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.6</version> </dependency> use SqlSessionFactoryBean can create sqlSessionFactory. dataSource is the bean of its own data source. The @ mapperscan annotation can help us regi ...

For the function of loading bean s, the calling methods in Spring are: MyTestBean bean = (MyTestBean)bf.getBean("myTestBean"); What function does this code realize? Let's see what's written in AbstractBeanFactory getBean public Object getBean(String name) throws BeansException { return doGetBean(name, null, null, false); } protected & ...

1. Environmental construction 1.1 architecture analysis Registry: NacosGateway: GatewayBackend infrastructure: ssmFront end: Vue + SPAAxios(request.js) 1.2 database environment 1.2. 1 student database #Student database CREATE DATABASE nacos_ssm_student; USE nacos_ssm_student; CREATE TABLE tb_city( c_id VARCHAR(32) PRIMARY KEY COMMENT ...

MultipartFile is a tool class provided by spring MVC to simplify upload operations. Before the framework is not used, the native HttpServletRequest is used to receive the uploaded data. The File is passed to the back end as a binary stream, and then we need to convert it into a File class, In the Spring framework, the support for file upload a ...

Spring boot in this article is 2.3 Version 4 1. Spring boot features, understand the principle of automatic configuration 1.1. Dependency management Dependency management for parent project: <!-- Dependency management --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-s ...

This article is excerpted from Spring 5 core principles1. Idea integrated Lombok plug-in1.1 installing plug-insIntelliJ IDEA is an excellent integrated development tool with powerful functions and many plug-ins. Lombok is an open source code generation library and a very practical gadget. When editing entity classes, we can use Lombok annotatio ...

Spring is the most popular and powerful lightweight framework in Java. The life cycle of Spring Bean is also a high-frequency interview question. Understanding the Spring Bean cycle can also better help us solve problems in daily development. Programmers should know that the basic container of spring is ApplicationContext. At the strong suggest ...