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Environment Setup Database Schema Create a MySQL database named springboot and a table t_user to hold user records. CREATE DATABASE `springboot`; USE `springboot`; DROP TABLE IF EXISTS `t_user`; CREATE TABLE `t_user` ( `id` INT(11) NOT NULL AUTO_INCREMENT COMMENT 'Primary Key', `name` VARCHAR(10) DEFAULT NULL COMMENT 'User name', `age` ...

In modern distributed systems and microservice architectures, the separation of frontend and backend is common. The overall system architecture is typically structured as follows: Note: This article focuses on API interface design. Other components like gateways, caches, and message queues are omitted for clarity. Interface Interaction The fr ...

1. Project Dependencies Add the following coordinates to your pom.xml to enable Swagger 2 and the enhanced Bootstrap UI theme: <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.9.2</version> </dependency> <dependency> <grou ...

Setting Up the HTTP Client A customized RestTemplate bean provides fine-graineed control over connection behavior. The configuration below binds a request factory with a timeout setting. import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.client.SimpleC ...

User Count Retrieval Endpoint POST /api/users/count Parameters Name Type Required Description query string No Search by username or phone active string No Filter: all, true, false Response { "status": 200, "result": { "totalUsers": 150 } } User List Retrieval Endpoint POST /api/users Parame ...

Understanding HTTP Before diving into REST, you should have a solid understanding of the Hypertext Transfer Protocol (HTTP). HTTP was created in 1989 by Tim Berners-Lee at CERN, the European Organization for Nuclear Rseearch. In the early days of computing, researchers would publish their findings in physical journals, which meant lengthy turna ...

@Controller Applied at the class level, @Controller marks a class as a Spring MVC controller and registers it as a Spring bean. The DispatcherServlet automatically detects such classes and routes incoming HTTP requests to methods annotated with @RequestMapping. This annotation is specifically intended for web controllers—use @Component or other ...

API Design HttpClient provides a cleaner, more intuitive API compared to WebRequest. The framework encapsulates HTTP request components—methods, URLs, headers, and body content—into dedicated objects, streamlining development. Sending a GET request with HttpClient requires a single call to GetAsync(url), while POST requests use PostAsync(url, c ...