Programmer Think

What is SpringBoot It is a micro service scaffold, which can quickly build a micro service. Viewpoint: agreement is greater than configuration!!! SpringBoot is currently the mainstream. Create a SpringBoot microservice project Spring officially provides a very convenient tool for us to quickly build applications Spring Initializr: https:// ...

preface spring source code is compiled locally. According to the operation steps of online blog references, there will always be all kinds of inexplicable errors. Find a solution according to the error information, but you can't compile it in your own environment. Combined with the training and learning methods provided by teacher Jack, I trie ...

This article is to understand the Spring startup process step by step by reading the configuration class through the AnnotationConfigApplicationContext. Before looking at the source code, we need to know the role of some classes, which is more convenient for subsequent understanding. 1,BeanDefinition BeanDefinition is the definition of a bea ...

1. Comments on @RequestMapping Add the @RequestMapping annotation before the method to process the request to configure the mapping relationship between the request path and the method to process the request! In this note it is declared that: @AliasFor("path") String[] value() default {}; And: @AliasFor("value") String[] path() defaul ...

catalogue Introduction to Spring: 1. Basic concepts of Spring: 2. Advantages of Spring: 3. Spring architecture Spring quick start Spring configuration file 1. Bean tag basic configuration 2. Bean tag range configuration 3. Bean lifecycle configuration: 4. There are three ways to instantiate a Bean 5. Introduction to Bean dependency i ...

preparation: 1. Import the open source demo of springboot integrated graphql spring-boot-graphql: spring-boot-graphql demo 2. Download postman Next, you can learn graphql The first step is to change the data source in springboot into its own test database Step 2 pay attention to the package framed in the figure below   First, how t ...

Annotation and reflection - Annotation What is annotation Explain a meaning to a computerCan be read by other programs //What is annotation? public class dom1 extends Object{ //Rewrite annotation @Override public String toString() { return super.toString(); } } Format: @ comment name, and some parameter values can b ...

1, Foreword Last time we were Teach you how to solve circular dependency step by step, and explore the mystery of L3 cache step by step The way Spring solves circular dependency is analyzed in. In Section 6, doCreateBean (AbstractAutowireCapableBeanFactory class) has vaguely seen several stages of the Bean's life cycle. protected Object d ...

1, Transaction operation 1. Transaction concept 2. Build a business environment 1. Create database tables and add records 2. Create a service, build a dao, and complete the object creation and injection relationship (1) service is injected into dao, JdbcTemplate is injected into dao, and DataSource is injected into JdbcTemplate @S ...

🎆 Knife4j API management 1. Foreword Recently, we have developed a background management system of Neo4j+elasticsearch+mysql as the database. The main function is to use the characteristics of the graph database to store the knowledge point data in different disciplines. At present, the first version of the system has been developed. Wi ...