This article demonstrates how to programmatically register and unregister Spring Boot controller methods, covering simple examples, adding request constraints, custom matching conditions, and endpoint removal, with complete code snippets and a test result illustration.
This article explains the Model Context Protocol (MCP), why it simplifies AI tool integration, and provides a step‑by‑step guide to create a Spring AI 1.0.0‑M7 Maven project, configure the MCP server with HTTP SSE, implement weather and Maoyan movie services, run the server, and test it with the MCP Inspector and Cherry Studio client.
This article introduces APIJSON, a zero‑code JSON‑based ORM for APIs, outlines its key features, and provides a step‑by‑step Spring Boot 3 demo—including cloning the repository, configuring the database, and performing full CRUD operations via Postman with code examples.
This article provides a step‑by‑step tutorial on installing, configuring, and using the open‑source XXL‑Job distributed scheduling framework with Spring Boot, covering server and executor deployment, task creation via annotations, API and sharding, execution, logging, and the underlying Netty‑based communication design.
This article explains why Spring Boot 3.4's new automatic HTTP header binding can corrupt DTO fields like version used for optimistic locking, and provides a global ControllerAdvice solution plus alternative strategies to prevent such conflicts in microservice environments.
This article explains how Spring Boot controllers can return up to 17 different response types—including @ResponseBody, HttpEntity, ResponseEntity, HttpHeaders, ErrorResponse, ProblemDetail, String views, ModelAndView, @ModelAttribute, DeferredResult, Callable, CompletableFuture, ResponseBodyEmitter, SseEmitter, StreamingResponseBody, Flux and Mono—providing code examples, usage notes, and sample output images for each.
This article explains how to design and implement a plugin mechanism in Java and Spring Boot, covering the benefits of modular decoupling, common implementation patterns such as ServiceLoader and custom configuration files, and practical code examples for building extensible backend services.
This article provides a step‑by‑step guide for integrating Alipay sandbox payment into a Spring Boot backend, covering sandbox configuration, network tunneling, Maven SDK dependency, application properties, payment request creation, callback processing, and common troubleshooting.
This article demonstrates how to enable conversation memory and history in Spring Boot 3 applications using Spring AI's Advisor API, covering environment setup, Maven dependencies, configuration, code examples for advisors, unique chat IDs, history retrieval, and optional database persistence.
This article explains a low‑intrusion data‑permission design for backend micro‑services, detailing resource and value‑rule definitions, RBAC modeling, MyBatis SQL interception implementation, Redis‑based permission retrieval, and Spring Boot auto‑configuration for easy enablement in production.
This guide walks through converting a traditional Spring Boot book‑management API into a Model Context Protocol (MCP) service that can be invoked via natural‑language prompts, covering dependency setup, proxy configuration, @Tool annotations, MCP server registration, chat client wiring, data initialization, and end‑to‑end testing.
This tutorial walks through integrating Spring Cloud Sleuth and Zipkin to achieve distributed service tracing in a microservice architecture, covering the underlying concepts, step‑by‑step implementation, log analysis, and optional asynchronous log collection via RabbitMQ.
This comprehensive guide walks you through Spring Boot 3 AOP fundamentals, showing how to declare aspects with @Aspect, define pointcuts using @Pointcut, apply various advice types, manage ordering, bind method parameters, and leverage inter‑type declarations with clear code examples and diagrams.
This article explains how to implement asynchronous request handling in Spring Boot using Callable, WebAsyncTask, and DeferredResult, detailing their processing flow, configuration of thread pools, and scenarios where async requests improve throughput while outlining potential trade‑offs.
This guide walks through initializing a Spring Boot project, handling IDE setup challenges, managing version compatibility between Spring Cloud, Spring Boot, and Kafka, and provides practical code examples for global exception handling, logging, CORS configuration, Swagger integration, and useful development tools.
This article demonstrates how to solve Spring Boot API timeout issues by creating a custom @Timeout annotation combined with an AOP aspect, covering annotation definition, aspect implementation, executor handling, fallback logic, configuration, and practical test results.
This article walks through installing a local Apache Pulsar cluster with Docker Compose, using Pulsar Manager for administration, demonstrates native Java producer and consumer code, and introduces the Easy Spring Pulsar annotation library for concise Spring Boot integration.
This guide explains how Spring Boot applications can dynamically load and unload JAR files at runtime—covering the underlying concepts, benefits such as modularity and hot‑plugging, and step‑by‑step implementations using SpringBootClassLoader as well as the OSGi resource‑locator library.
This article walks through a complete solution for protecting data in Spring Boot applications, covering symmetric, asymmetric, and hybrid encryption schemes, utility classes for AES and RSA, a custom HttpServletRequestWrapper to enable multiple reads of the request body, a filter that transparently decrypts incoming parameters, and an AOP‑based response‑encryption mechanism triggered by a custom annotation.
Upgrading to Spring Boot 2.7.1 (Spring Framework 5.3.21) alters the execution order of @Around, @Before, @After, @AfterReturning, and @AfterThrowing advice within the same @Aspect, causing ThreadLocal data loss and prompting a recommendation to consolidate logic into a single @Around advice.
Learn how to boost Spring Boot 3 application performance by implementing a multi‑level cache that combines local and Redis storage, using custom @MultiLevelCache annotations and AOP aspects, complete with cache clearing mechanisms, code examples, and testing instructions.
The article presents a Spring Boot experiment measuring per‑request heap memory usage for HTTP and RPC calls, details the JMeter test setup, analyzes GC logs, reports findings such as ~34KB per HTTP request and 0.5‑1MB per RPC request, offers optimization recommendations, and also includes promotional material for AI‑related products.
This article introduces Spring 6's new HTTP Interface feature with a step‑by‑step demo, explains the GetExchange annotation and service creation, and then shifts to promote AI‑related products and community offers, including code snippets and deployment instructions.
This guide walks through creating a Retrieval‑Augmented Generation (RAG) system using Spring Boot 3.4.2, Milvus vector database, and the bge‑m3 embedding model via Ollama, covering environment setup, dependency configuration, vector store operations, and integration with a large language model to deliver refined, similarity‑based answers.
This article explains how to merge concurrent user requests into a single batch SQL query using Java's LinkedBlockingQueue, ScheduledThreadPoolExecutor and CompletableFuture in a Spring Boot application, thereby saving database connections and improving performance under high concurrency.
This article presents eight practical Spring Boot 3 examples—including Resilience4j protection, custom Actuator endpoints, distributed transactions, caching, asynchronous programming, API gateway, OAuth2/JWT security, and scheduled tasks—each with code snippets and configuration guidance to help developers build robust backend services.
This guide shows how to convert a traditional Spring Boot book‑management service into a Model Context Protocol (MCP) server that lets large language models interact with the service via natural‑language commands, covering dependency setup, MCP configuration, tool annotations, chat client integration, and end‑to‑end testing.
This article introduces the Liteflow rule engine, explains its architecture and components, demonstrates how to configure and use it with Spring Boot, shows EL rule file examples and a real e‑commerce workflow, and summarizes its performance benefits for backend development.
This article introduces ten common Spring AOP pointcut expressions, explains their syntax and usage with both annotation‑based and XML configurations, provides concrete code examples, and shows how to combine them for flexible aspect weaving in Spring Boot 3.4.2.
This article walks through creating a Spring Boot project that uses Spring 6's new HTTP Interface feature, defines a @GetExchange‑annotated API, generates a client proxy with WebClient, demonstrates request handling, explains related annotations, and discusses why the Reactive Web dependency is required.
This article demonstrates how to convert a traditional Spring Boot book‑management service into an AI‑enabled MCP server, covering dependency setup, entity definition, tool annotations, MCP configuration, chat client integration, data initialization, and testing, with complete code examples.
This article explains how to use Jackson's @JsonView annotation in Spring Boot 3 to flexibly control JSON output for different REST scenarios, covering basic usage, programmatic view selection, view‑based MVC responses, deserialization restrictions, and default‑inclusion configuration with practical code examples.
This article compares six WebSocket integration approaches—Javax, WebMVC, WebFlux, Java-WebSocket, SocketIO, and Netty—showing how to configure both server and client sides in Spring Boot, with step‑by‑step code examples, key annotations, and practical tips for each method.
This article provides a comprehensive guide to integrating WebSocket in Spring Boot, covering the native Javax API, Spring WebMVC and WebFlux approaches, as well as popular third‑party libraries such as Java‑WebSocket, SocketIO and Netty, with detailed configuration steps, code examples, and practical tips.
This article introduces the Lock4j distributed lock library, explains its features, shows how to add Maven dependencies, configure Redis, use the @Lock4j annotation for simple and advanced locking scenarios, and provides custom executor, key builder, and failure‑strategy examples for Spring Boot applications.
This article explains how to decouple business logic using Spring Boot transaction event listeners, demonstrates both manual TransactionSynchronization and @TransactionalEventListener implementations with full code examples, and shows a practical user‑registration scenario that avoids common pitfalls.
This article compiles essential Java backend interview topics, covering Redis cache pitfalls and solutions, Spring Boot initialization steps, common Spring annotations, MyBatis advantages, Git workflow commands, Java exception hierarchy, Java 8 enhancements, HashMap internals, Docker isolation mechanisms, and Jenkins CI/CD pipelines, providing a comprehensive technical reference for developers.
This article walks through essential Spring Boot 3 JPA entity design techniques—including inheritance, primary‑key mapping, relationship handling, cascade operations, validation, auditing, DTO projection, and index creation—providing clear code examples and configuration tips for building robust, maintainable backend services.
This guide demonstrates how to create a Spring Boot backend that integrates DeepSeek's large language model via the Spring AI OpenAI starter, covering project setup, dependency configuration, API key management, and a sample controller that provides AI-powered chat responses such as weather forecasts.
This article introduces the lightweight Easy Rules Java rule engine, explains why traditional if‑else logic is problematic, demonstrates core concepts such as rule, condition, action, and facts, provides step‑by‑step code examples, showcases six practical use‑cases, and shows how to integrate it with Spring Boot and Maven.
This tutorial walks through creating a Model Context Protocol (MCP) server and client using Spring Boot 3, covering dependencies, configuration, tool implementation, registration, and sample code to enable AI models to access external services like weather and IP information.
This article introduces the Liteflow rule engine, detailing its architecture, component types, Maven and YAML configuration, example XML rule definitions, and a real‑world e‑commerce workflow, while also promoting related AI tools and services.
This article explains how to build a Spring Boot service that uses OpenCV for image preprocessing and Tesseract OCR to extract ID numbers and business license information from photos, providing step‑by‑step guidance, required dependencies, and complete Java code examples.
This article explains how Spring AI's tool‑calling feature extends large language models by integrating custom Java tools for information retrieval and operations, and provides step‑by‑step Spring Boot 3 examples—including date‑time and weather tools—complete with configuration, code snippets, and execution results.
This article compares Spring Boot and Quarkus by outlining their architectures, running a reactive‑API benchmark with JMeter and VisualVM, presenting startup, build‑time, memory, CPU and response‑time results for JVM and native images, and offering a step‑by‑step guide for migrating Spring developers to Quarkus with code examples.
This article explains how Spring Boot replaces extensive XML configuration with annotation‑driven setup, detailing the purpose and usage of core annotations such as @SpringBootApplication and @EnableAutoConfiguration, as well as conditional annotations like @ConditionalOnClass, @ConditionalOnBean, @ConditionalOnProperty, @Profile, and provides best‑practice recommendations.
This article explains the fundamentals of OAuth2.0, outlines its roles and grant types, and provides a step‑by‑step Spring Boot implementation—including authorization server, security configuration, resource server, and a test controller—followed by detailed testing procedures and results.
Spring Boot 3.5 introduces major enhancements such as dynamic environment‑variable configuration, enriched distributed tracing, intelligent task‑context propagation, Quartz job triggering, SSL certificate lifecycle monitoring, flexible Redis read strategies, and improved Liquibase support, all aimed at boosting enterprise‑grade application development.
This article compares Spring Boot and Quarkus by describing their architectures, presenting a reactive test application that uses PostgreSQL, detailing a JMeter performance test plan, and analyzing results such as startup time, build size, CPU, memory, and response latency to help developers decide when to migrate from Spring Boot to Quarkus.
This article provides a comprehensive Spring Boot tutorial covering user account activation, email verification, password recovery, and advanced mailing features such as attachments and inline resources, complete with QQ mail configuration, Maven dependencies, JavaMailSender setup, asynchronous sending, and full code snippets for practical implementation.
This article introduces a free Spring Boot 3 ebook with 110 practical cases and explains the configuration file loading order, then demonstrates how to use @Value, @ConfigurationProperties, @PropertySource, EnvironmentPostProcessor and other techniques with clear code examples.
This article walks through a complete sharding implementation that splits a user table across four MySQL databases and sixteen tables, discusses challenges such as distributed IDs, transactions, data migration and pagination, and provides full Spring Boot, Sharding‑JDBC, Elasticsearch and Redis configurations with code examples.
This article demonstrates how to use the Adapter pattern in a Spring Boot microservice to abstract multiple OSS providers such as Minio and Aliyun, including code implementations, configuration with Nacos, and a complete upload workflow with a FileService and controller.
Learn how to implement efficient large‑file uploads by splitting files into chunks, uploading them via a Vue 3 front‑end, and handling the chunked data with Spring Boot 3 back‑end APIs, including code examples for both client‑side upload logic and server‑side chunk storage and merging.
This article explains the concept, advantages, design choices, and step‑by‑step implementation of a multi‑tenant architecture using Spring Boot and Spring Cloud, covering database design, tenant isolation, dynamic routing, and deployment scenarios for SaaS and enterprise applications.
This article demonstrates how to leverage Spring Boot 3's data binding capabilities by converting primitive types to objects, creating custom converters, handling hierarchical object binding, and implementing custom argument resolvers, complete with code examples and execution results.
The article introduces DeepSeek4j 1.4, a Java‑centric framework that overcomes Spring AI’s limitations by preserving DeepSeek’s chain‑of‑thought, supporting streaming output, and offering a simple Spring Boot starter with reactive, configurable, and ready‑to‑use APIs for AI developers.
This article explains how to replace Spring Boot's default embedded Tomcat with the Undertow container, details the configuration steps, and presents benchmark results showing Undertow's superior throughput and lower memory usage under high‑concurrency workloads, making it a better choice for performance‑critical applications.
This article explains how Spring Framework's ResponseBodyEmitter enables real‑time, chunked HTTP responses for use cases such as log streaming, progress updates, chat, and AI output, detailing its advantages over SSE, usage scenarios, core methods, a complete controller example, and best‑practice considerations.
This article explains multiple ways to load JSON configuration into Spring Boot 3 applications, covering command‑line arguments, @PropertySource with custom factories, ApplicationContextInitializer, nested JSON handling, and direct @Bean approaches, complete with code examples and troubleshooting tips.
This article introduces Spring AI, a Spring ecosystem module that simplifies building, training, and deploying AI applications for Java developers, covering its background, goals, core components such as data processing, model training, deployment, practical code examples, use cases, advantages, challenges, and future outlook.
This article presents nine practical techniques—including the Strategy pattern, lambda maps, Optional chaining, ternary operators, enums, early returns, condition merging, and rule engines—to replace cumbersome if‑else chains in Java, offering cleaner, more maintainable and performant code for Spring Boot developers.
This article explains the Facade design pattern, illustrating its purpose of simplifying complex systems with a real‑world TV remote analogy, detailing its benefits, UML structure, and a comprehensive Spring Boot example that integrates flight, hotel, and package services through a BookingFacade to streamline travel booking logic.
This article investigates MySQL's recommendation against using UUID or random Snowflake IDs as primary keys by creating three tables with different key strategies, running Spring Boot/JDBC performance tests, analyzing index structures, and concluding that auto‑increment keys offer superior insertion efficiency and fewer drawbacks.
This article explains how to merge multiple user‑detail requests into a single database query using a blocking queue, scheduled thread pool, and CompletableFuture in Spring Boot, providing code examples, a high‑concurrency test, and discussion of trade‑offs such as added latency and timeout handling.
This guide explains how to use JSR‑303 and Hibernate Validator in Java Spring Boot to perform comprehensive parameter validation, covering basic annotations, global exception handling, group validation, nested object checks, fast‑fail configuration, and custom validation rules, with practical code examples and testing procedures.
This article walks through the complete lifecycle of an HTTP API call initiated with Postman, covering DNS resolution, TCP/IP connection, Nginx reverse proxy and load balancing, Spring Boot request handling, service layer processing, JSON serialization, and the final response delivery back to Postman.
This article introduces a Spring Boot 3 case collection and provides a comprehensive guide to Java enums, covering their definition, type safety, custom values, interface implementation, abstract methods, generics, pattern matching, functional programming, collection usage, and sealed‑class integration with clear code examples.
This article explains the Facade design pattern, illustrating its purpose, benefits, and UML structure, then demonstrates a practical implementation in a Spring Boot travel‑booking system with complete code examples for services, a facade class, and a controller, highlighting how it simplifies complex subsystem interactions.
Explore a rich Spring Boot 3 case collection while learning step‑by‑step how to use REST‑assured for API testing, covering dependency setup, GET/POST/PUT/DELETE requests, authentication, XML validation, file upload/download, and advanced features, with full code examples and a promise of ongoing updates.
This article explains why a centralized configuration center is needed for many microservices, introduces Spring Cloud Config, and provides a step‑by‑step tutorial that creates a Git‑backed config server, a client application, and demonstrates dynamic refresh using Spring Boot Actuator.
This article introduces a continuously updated Spring Boot 3 case collection and provides a step‑by‑step tutorial on implementing Server‑Sent Events using both the native EventSource API and the fetch‑event‑source library, covering backend controller code, frontend Vue integration, and practical code examples.
This article provides a comprehensive guide to speeding up Spring Boot application startup by explaining configuration principles, code‑level interventions, lazy loading, dependency reduction, auto‑configuration exclusion, logging adjustments, compile‑time optimizations, and caching strategies, all illustrated with practical Java examples.
This article introduces Spring Boot 3’s StreamingResponseBody, explains its benefits for high‑concurrency scenarios, and provides three hands‑on examples—large file download, real‑time data streaming, and dynamic CSV export—complete with full Java code and practical tips for efficient backend development.
This article introduces OAuth 2.0 fundamentals, explains its roles and four grant types, and provides a step‑by‑step Spring Boot implementation with configuration classes, code snippets, and testing procedures, while also containing promotional material for AI‑related products and services.
This article explains how to integrate Gitee's Model Control Protocol (MCP) with Java using LangChain4j, covering download, Maven setup, configuration, both stdio and SSE transport modes, sample code, output examples, and a comparison of the two modes to create an AI‑powered repository assistant.
This article demonstrates how to use Spring AI with a large language model to automatically generate and execute SELECT SQL statements in a Spring Boot 3 application, covering dependency setup, configuration files, prompt templates, controller implementation, and testing with example scripts.
This article explains Apache Tika's core features, architecture, and multiple application scenarios, then provides a step‑by‑step guide to embed Tika in a Spring Boot project to extract file content, detect personal data such as ID numbers, credit cards and phone numbers using regular expressions, and protect against data leakage.
This article provides a detailed Java backend interview guide covering Redis cache problems and solutions, Spring Boot startup process, common annotations, Git workflow commands, Java exception hierarchy, Java 8 enhancements, HashMap implementation, Docker containerization, and Jenkins CI/CD practices, along with practical examples and code snippets.
This tutorial explains how to set up a complete CI/CD pipeline on CentOS 7 by installing Docker and Jenkins, configuring Maven, creating Jenkins jobs, building a Spring Boot application into a Docker image, and running the container, with detailed commands and screenshots for each step.
This article introduces annotation‑based parameter validation in Spring Boot 3, explains built‑in constraints, shows how to use @Valid and @Validated in controllers, and provides multiple practical code snippets—including record types, error handling, collection validation, and return‑value checks—along with screenshots of validation errors.
The article compares Spring Boot and Quarkus for cloud‑native Java apps, showing Quarkus’s faster startup, smaller builds and lower memory usage (especially in native mode) while Spring Boot slightly leads latency, and outlines migration paths leveraging Quarkus’s Spring‑compatible extensions and native‑image advantages.
DeepSeek4j 1.4 introduces a Java‑centric, Spring Boot‑compatible framework that fully preserves DeepSeek's chain‑of‑thought capabilities, adds reactive streaming, and provides simple one‑line API integration, addressing previous limitations in mainstream frameworks and offering ready‑to‑use configuration and code examples.
Explore the newly released Spring Boot 3 case collection and dive into a practical guide on implementing API version control in Spring 7.0.0‑M3, featuring step‑by‑step configuration, Maven setup, custom version resolver, and annotated controller examples, plus a promise of ongoing updates.
This article compares Spring Boot and Quarkus across architecture, startup speed, memory usage, and native image support, presents a JMeter‑based performance test suite, shares migration tips for Spring developers, and provides concrete Java code examples for building reactive microservices on both frameworks.
This article introduces Aviator, a lightweight JVM‑based expression engine, explains its features and limitations, and demonstrates how to integrate it with Spring Boot and AOP to replace traditional if‑else validation logic using custom annotations and script files.
This article explains the CRaC (Coordinated Restore at Checkpoint) technology for Java applications, describing its principles, supported environments, practical steps for enabling it with Spring Boot, and use‑case scenarios that dramatically reduce JVM startup time.
Facing the need to query multiple databases in a Spring Boot application, this guide walks through building a custom dynamic datasource solution using ThreadLocal and AbstractRoutingDataSource, covering core implementations, annotation‑based switching, dynamic datasource addition, configuration, and comprehensive test results.
The open‑source DeepSeek‑Flow‑AI platform combines Spring Boot 3.4 back‑end APIs with a Vue 3 front‑end to deliver an enterprise‑grade knowledge base and intelligent multi‑turn dialogue system, supporting private deployment, role‑based access, analytics, CRM/ERP integration, and easy installation via Maven and Yarn.
Discover ten validated Spring Boot 3 performance optimization techniques—including lazy initialization, JVM tuning, connection pooling, caching, async processing, virtual threads, and Actuator monitoring—complete with configuration snippets and code examples, to accelerate startup, reduce memory usage, and improve response times for Java backend services.
This article introduces Magic‑API, a Java‑based rapid API development framework, outlines its extensive feature set, and provides step‑by‑step instructions—including Maven integration, configuration, and visual UI usage—to help developers create HTTP endpoints without writing traditional controller or DAO code.
This article introduces AviatorScript, a lightweight high‑performance JVM‑based scripting language, outlines its core features and limitations, demonstrates how to add it to a Maven project, shows expression evaluation, variable handling, custom functions, script files, and provides a practical Spring Boot AOP validation example with full code snippets.
This article explains how Spring Boot 3's new @BindParam annotation lets developers map mismatched path and query parameters to constructor arguments, supports @ModelAttribute, and shows how to create custom name resolvers for advanced parameter binding scenarios.
This article demonstrates how to integrate Apache Tika into a Spring Boot application to automatically extract file content, detect sensitive data such as ID numbers, credit cards, and phone numbers using regex, and implement data leakage protection through RESTful file upload endpoints and optional front‑end UI.
This article explains what Deflate compression is, why it improves performance, when to use it, and provides a step‑by‑step Spring Boot 3 implementation—including a custom filter, response wrapper, registration, testing, and optional GZIP configuration—to reduce response size and enhance user experience.
This article examines common pitfalls in Spring Boot controller implementations—such as excessive try‑catch blocks, inline validation, and business logic—then demonstrates cleaner alternatives using @Valid, validation annotations, and global exception handling to produce concise, maintainable controllers.
This article explains how to design and implement a flexible plugin mechanism for Java applications, covering the benefits of decoupling, common implementation strategies such as ServiceLoader (SPI), custom configuration loading, and Spring Boot integration via spring.factories, with complete code examples and a real‑world case study.
This tutorial walks through setting up a Spring Boot 2.7.5 project with Flowable 6.6.0 and MySQL8, covering environment setup, Maven dependencies, application properties, core Java classes, REST endpoints, process diagram generation, BPMN definition, database tables, and demo screenshots for a complete leave‑approval workflow.
This article introduces deepseek4j, a Java SDK for DeepSeek AI models, walks through Maven setup, Spring Boot configuration, basic and advanced usage examples—including streaming, synchronous, SSE debugging, and web‑search integration—while detailing key configuration options and best‑practice notes.
This tutorial demonstrates how to create an AI-driven Spring Boot application by integrating DeepSeek's large language model, covering project setup, dependency configuration, API key management, and implementing a REST controller that provides weather forecasts via a conversational interface.
