This article explains why migrating a Spring Boot app from Java 8 to Java 11 is necessary, compares OpenJDK and commercial licenses, outlines Spring's Java‑11 support, and provides detailed migration steps, dependency updates, and Maven/Gradle configuration changes.
This tutorial walks you through creating Maven custom archetype templates, developing and using custom plugins, and configuring build profiles for environment‑specific packaging, providing step‑by‑step commands, code snippets, and visual guides for Java backend projects.
This article details how to build an automated testing framework for algorithm interfaces with TestNG, Maven, Allure Report, Excel data-driven inputs, and Jenkins integration, covering project setup, plugin configuration, test execution, and report generation to streamline repetitive testing tasks.
This article presents a curated list of fundamental and advanced tools—including JIRA, Git, Jenkins, Selenium, Groovy, Spock, Maven, Gradle, Docker, and Linux—that Java developers with any experience level should master to improve productivity, testing, build automation, and deployment.
This article explains how to implement Java Instrumentation using a custom Java agent to achieve AOP‑style method timing without Spring, covering Instrument concepts, Maven manifest configuration, Agent entry points, JDK Attach API loading, class file transformers, annotation processing, and integration with QTrace for full‑stack tracing.
This article details the design of a reusable Java backend framework called lyyzoo, covering coding standards, Maven module hierarchy, dependency management, core utility classes, and Spring configuration for web, JPA, and transaction support, providing a comprehensive guide for building enterprise applications.
This article walks through the complete backend development of a gas purchase‑sale‑stock management system, covering entity and database design, Maven multi‑module project setup, Spring and web.xml configuration, environment‑specific property handling with a portable‑config Maven plugin, and a sample login controller implementation using Java, Spring MVC, and ExtJS.
This article presents a detailed case study of a mid‑size development team’s front‑end and back‑end technology stack, server environment, project workflow, and management practices, aiming to share practical solutions and lessons learned for building and maintaining enterprise‑grade Java applications.
This article explains how to dynamically modify a Java project's properties at runtime without restarting the JVM by attaching a custom Java agent, configuring Maven dependencies, and using JConsole or Telnet for property updates.
This tutorial walks through creating a lightweight Java web project using Maven, Spring, SpringMVC, MyBatis, and SpringBoot in IntelliJ IDEA, covering project setup, datasource configuration, Spring annotations, MyBatis integration, deployment settings, and optional Redis and Druid components.
This article introduces a lightweight Java wrapper around Alibaba's EasyExcel library that enables one‑line Excel import and export, explains required Maven dependencies, essential utility classes, and provides complete code examples for reading, writing single‑sheet and multi‑sheet workbooks with custom model mappings.
This article provides a comprehensive, question‑driven guide to Spring Boot, covering its differences from Spring and Spring MVC, auto‑configuration, starter projects, embedded servers, Maven plugins, DevTools, static resources, Spring Data, REST support, request mapping nuances, and profile‑based configuration for building production‑ready Java backend applications.
This article systematically outlines the essential steps and considerations for creating a classic Java web application, covering environment preparation, Maven scaffolding, logging and database dependencies, DAO design with MyBatis, Spring integration, service-layer best practices, and RESTful controller implementation.
This article introduces a modular Java web crawler framework built with Maven, explains its package structure (db, model, util, parse, main), details the data flow from URL fetching to HTML parsing using HttpClient and Jsoup, and provides a complete example that extracts book information from JD.com and stores it in MySQL.
This guide shows how to change a Spring Boot project’s packaging to WAR, remove the embedded Tomcat, add the servlet‑api dependency, create a servlet initializer, build the WAR with Maven, and deploy it to an external Tomcat server for verification.
This article explains how to download, configure, and compile the Nexus repository manager from source, then details the structure and strategy of its local storage directories, providing insights into its blob, cache, database, and other components.
This article introduces Spring Boot, explains its key features, walks through creating a Maven project with a complete pom.xml, adds essential dependencies and plugins, shows how to write a basic @RestController application, and demonstrates various ways to run and hot‑reload the service.
This article provides a comprehensive guide to Maven, covering its installation, the structure and purpose of local and remote repositories, step‑by‑step project creation, detailed explanation of the pom.xml file, essential Maven commands, and best‑practice tips for Java developers.
This article explains the shortcomings of traditional distributed microservice testing, introduces consumer‑driven contract testing, outlines the evolution of a distributed R&D model, and provides a step‑by‑step guide with code samples for implementing Spring Cloud Contract in both provider and consumer services.
This article provides an in-depth explanation of Maven's settings.xml file, covering its purpose, default locations, top‑level elements, single‑level configurations such as localRepository and offline mode, plugin groups, servers, mirrors, proxies, profile activation, properties, repositories, and active profiles, helping readers configure Maven effectively.
This guide walks through troubleshooting Ubuntu 14.04 network manager incompatibility, configuring campus network access, setting up an SSH server, adjusting Vim tabs, installing Java JDK, Maven, Zsh, and various utilities, plus tips for grub configuration, system monitoring, and software enhancements on an old machine.
This step‑by‑step guide shows how to create a simple Spring Boot application, configure Gradle or Maven builds, write MockMvc tests, and use Spring REST Docs to automatically generate up‑to‑date API documentation snippets that can be included in Asciidoctor‑based docs.
This article explains how to correctly configure Maven dependencies for Spring 3 (and briefly for Spring 4), detailing the framework’s five module groups, their individual jars, dependency relationships, and providing ready‑to‑use XML snippets for both core and web projects.
This comprehensive guide explains Maven's core concepts, project structure, repository types, installation steps, common commands, lifecycle phases, creating new Maven projects, POM file details, dependency management, and various Maven project types, providing developers with a complete reference for effective build automation.
This guide walks through extracting Java source files from a deployed WAR package, decompiling the bytecode with free tools, and reorganizing the output into a Maven‑compatible web project structure so the application can be maintained and extended.
This tutorial provides a step‑by‑step walkthrough for setting up Apache RocketMQ 4.2 on a 64‑bit Linux system, covering environment prerequisites, downloading source, building binaries, starting NameServer and Broker, sending and receiving messages, and shutting down the services.
This article demonstrates how to use Google's ZXing Core library in a Java Maven project to generate QR code images, create random verification codes, and decode QR codes from files, providing complete code examples and step-by-step instructions.
This guide explains how to use Swagger2Markup to convert Swagger JSON from a Spring Boot project into AsciiDoc and then into static HTML, covering Maven dependencies, a JUnit test for document generation, and the Asciidoctor plugin configuration for final deployment.
This tutorial walks through creating a Maven project in IntelliJ IDEA, configuring Maven settings, adding required dependencies, setting up Spring, MyBatis, FreeMarker, Log4j, and web.xml, and integrating Spring MVC to build a complete SSM framework application.
This guide explains how to break down a 5‑million‑line Maven codebase into modules, configure SonarQube scanning, and integrate it into a Jenkins CI/CD pipeline for fast, automated code‑quality analysis.
This guide walks through cloning the LanguageTool repository, building it with Maven, extracting the required JARs, creating a servlet that uses JLanguageTool to check English text, handling language‑code issues by packaging META‑INF resources, and finally testing the service with curl.
This guide walks you through configuring Jenkins to build a SpringBoot Maven project, automating post‑build steps, managing the workspace, and securely transferring the resulting JAR to another server using SSH keys or an Expect script.
Alibaba’s Dubbo framework has launched its first version after resuming maintenance, addressing critical issues such as graceful shutdown, monitoring blockages, dynamic configuration bugs, routing errors, async leaks, and concurrency limits, while also upgrading core Maven dependencies like Spring, Zookeeper, Hessian, and more.
This article explains the layered server‑side architecture model, the role of each layer, the MVC pattern and its communication flows, Maven‑based project modularization, and an overview of Service‑Oriented Architecture, providing a practical guide for designing flexible backend systems.
This tutorial walks through setting up Drools 7, configuring Maven dependencies, kmodule.xml, and writing a simple Hello World rule test that demonstrates product discount calculation using the new KIE API.
This article introduces Apache Maven as a vital Java build tool, explaining its standard project layout, automatic and transitive dependency management, installation, IDE integration, pom.xml configuration, common commands, and a brief comparison with Gradle, providing essential knowledge for Java developers.
This comprehensive guide walks you through MapReduce fundamentals, the complete execution flow, and seven hands‑on Hadoop projects—including WordCount, custom serialization, custom partitioning, grouping comparators, file merging, multiple outputs, join operations, and friend‑graph analysis—while providing environment setup steps, Maven commands, and Hadoop CLI examples.
This tutorial explains how to configure Jenkins with the Generic Webhook Trigger plugin to automatically start builds whenever code is pushed to the develop branch of a Gitee (Git@OSC) repository, covering preparation, job setup, security settings, and webhook configuration.
Learn step‑by‑step how to install Jenkins on Windows, configure the service port, create a Maven job with Subversion source control, set up build triggers, post‑build actions, and email notifications, then run and monitor builds through the Jenkins web UI.
This tutorial walks readers through setting up the development environment, generating a Jenkins plugin skeleton with Maven, understanding the project structure and Jelly view files, writing the plugin code, debugging, and finally packaging and deploying the custom plugin to a Jenkins server.
This guide explains how to set up Jenkins to run Maven builds for different environments (dev, beta, prod), including commands to skip tests, deploy to Nexus, and specify profile parameters, with screenshots illustrating the correct configuration to avoid common errors.
This article explains the common pitfalls of manual Java deployment, introduces the concept of a closed‑loop Java application, and provides step‑by‑step Maven‑assembly and Spring Boot configurations, scripts, and code examples for both non‑web and web projects to achieve automated, reproducible deployments.
This guide walks you through adding a Maven proxy repository, setting its remote URL and identifiers, and updating its index, providing clear step‑by‑step instructions with screenshots to help Java backend developers configure their build environment quickly.
This guide explains Nexus repository types—Hosted, Proxy, and Group—and provides step‑by‑step instructions with screenshots for adding a JBoss public proxy repository to Nexus so Maven can retrieve JBoss artifacts efficiently.
The article recounts how a developer observed repetitive Ant build scripts across projects, identified common build steps and path inconsistencies, proposed standardized directory conventions and XML‑based dependency declarations, leading to the creation of Maven and a shift toward convention‑over‑configuration in Java backend development.
Based on an analysis of 47,251 dependency declarations from 3,862 popular GitHub Java projects, this article presents the 100 most widely used Java libraries, highlights the top 20, examines the rise of Spring components, and discusses notable JSON and other standout libraries.
This guide walks through setting up a Jenkins CI server—including environment preparation, installation, essential plugins, system and project configuration, security hardening, and a custom shell script for automated deployment—providing a practical roadmap for reliable continuous integration and delivery in Java projects.
This article walks through the evolution from Ant to Maven to Gradle for Android projects, explains Gradle's project structure, key concepts like repositories, source sets, properties, tasks, shows how to publish artifacts, create and use plugins, and offers tips to speed up Gradle builds.
This tutorial walks you through creating a Docker‑based backend for a WeChat public account, covering project structure, Nginx and Tomcat configuration, Maven build, Dockerfile creation, and deployment on DaoCloud with continuous integration.
