Focused on Java technologies: SSM, the Spring ecosystem, microservices, MySQL, MyCat, clustering, distributed systems, middleware, Linux, networking, multithreading; occasionally covers DevOps tools like Jenkins, Nexus, Docker, ELK; shares practical tech insights and is dedicated to full‑stack Java development.
This guide introduces Multipass, a lightweight cross‑platform VM manager, and walks through installing it, launching Ubuntu instances, checking status, accessing shells, and automating setup with cloud‑init, while also covering pause, restart, and deletion commands.
This guide explains how to use @PathVariable to capture URL segments, configure static resource mapping for local files, and centralize path values in Spring Boot applications, providing code examples for request mapping, resource handler registration, and property injection.
This article explains WeChat’s hidden “recover” feature, detailing its official purpose, technical limits, step‑by‑step recovery methods, effectiveness, backup strategies, and the risks of third‑party tools, helping users safely restore lost chat records.
The article critiques overly large and tangled Spring MVC controllers, demonstrates ugly examples filled with try‑catch blocks, field validations, and business logic, then presents streamlined, elegant alternatives using @Valid, @Autowired, proper exception handling, and best‑practice guidelines to dramatically reduce code size and improve readability.
This guide explains why Spring Boot 3 is incompatible with Swagger 2, shows how to downgrade or replace dependencies, updates servlet imports, adjusts Maven and application settings, and provides a complete Swagger configuration to get the API docs running again.
This tutorial explains how to automate Excel data extraction in Java using the free Free Spire.XLS library, covering installation, core classes and methods, and detailed code examples for reading a single cell, a cell range, and an entire worksheet, enabling efficient batch processing and integration with other systems.
This guide shows how to generate Excel dropdown lists programmatically in Java using the free Spire.XLS library, covering two approaches—direct string arrays and cell‑range data sources—complete with sample code and screenshots.
This comprehensive 2025 guide walks users through identifying restriction types, preparing evidence, using WeChat's self‑service unlocking tools or web‑based appeal, completing assisted verification, handling enterprise account checks, and applying best‑practice safeguards to maximize the chance of successful account restoration.
This tutorial shows how to set up the Spire.OCR library in Java, configure dependencies, and write code that scans images to extract their text, complete with Maven setup, project configuration, and sample output.
This tutorial explains how to programmatically add headers and footers—including text, images, page numbers, and separator lines—to every page of a PDF using Java and the free Spire.PDF library, with complete code examples and visual results.
