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Some projects are old, and the view technology used is still JSP. Now it is required to turn these old projects into Spring Boot projects, so that they can be packaged into Docker images and then deployed to containers for management. For convenience of explanation and verification. We created a new Spring Boot project. Then integrate JSP ...

1. What is micro service 1.1 origin of microservices: Microservices were first proposed by Martin Fowler and James Lewis in 2014. Microservice architecture style is a way to use a set of small services to develop a single application. Each service runs in its own process and uses lightweight mechanisms to communicate, usually HTTP API s. These ...

Underlying schematic flow chart of dependency injection: https://www.processon.com/view/link/5f899fa5f346fb06e1d8f570 1, How many dependency injection methods are there in Spring? First, there are two types: 1. Manual injection 2. Automatic injection 1. Manual injection When defining beans in XML, it is manual injection, because progr ...

preface Through the previous article, we completed the initialization of the bean container, but we can observe that the steps of completing one container initialization are very cumbersome. It's better to inject only a few beans. Once there is a scenario where dozens or hundreds of beans need to be injected, so that users need to add bean ...

After understanding the service registration and de registration, it's time to go to the service invocation phase. Before calling the service, you need to assemble the request header and request body, build the client object, and call the remote service through the url address of the service provider. Although this method can realize remote ca ...

What is SpringBoot auto assemblyHow does SpringBoot implement automatic assembly Note: the source code analysis part is based on spring 5.0.4, and the springboot version is 2.0.0.RELEASE What is SpringBoot auto assembly     When using SpringBoot to develop applications, we can build a smooth running engineering code very quick ...

spring security Learning Notes 1. Introduction to spring security The core functions of spring security mainly include Certification (who are you)Authorization (what can you do)Attack protection (against identity forgery) Its core is a set of filter chains, which will be automatically configured after the project is started. The core is the ...

@Configuration+@Bean Front Create User and Pet classes public class User { private String name; private Integer age; public User(){ } public User(String name, Integer age) { this.name = name; this.age = age; } public String getName() { return name; } public void setName(String n ...

Scanner: get different types of variables from the keyboard Specific implementation steps ① Guide Package import java.util.Scanner; ② Instantiation of Scanner: Scanner scan = new Scanner(System.in)； ③ Call the relevant methods of the Scanner class to obtain the specified type int age = scan.nextInt(); System.out.println(age); ...

Welcome to my GitHub https://github.com/zq2599/blog_demos Content: classification and summary of all original articles and supporting source code, involving Java, Docker, Kubernetes, DevOPS, etc; Overview of this article Learn more about the circuit breaker function of Spring Cloud Gateway: Let's talk about theory first Then dete ...