How do 700+ nationwide projects deliver quality service? What inspiring stories lie behind dozens of product lines? Where is the efficient solution for tens of thousands of customer needs each year? This is Zhengtong Digital's technical practice sharing—a bridge connecting engineers and customers!
This article details the complete design and implementation process of a mobile signature component using HTML5 Canvas, covering requirements, architecture, event handling for touch and mouse, landscape mode handling, drawing optimization, and file export techniques for both base64 and File formats.
This article discusses the evolution of multimedia storage systems and the development of a high-performance HTTP file server using Netty to address issues like lack of support for file download breakpoints and low performance.
The article explains how automated testing—using Python‑based UI and API frameworks, configurable test‑data generation, Linux headless execution, and Jenkins continuous integration—addresses the growing complexity of software releases by reducing manual regression effort and improving defect detection speed.
This article explains how to employ Burp Suite to conduct comprehensive penetration testing on the ZhiXin mobile app, covering setup, proxy configuration, detection of sensitive data leaks, privilege escalation, XSS, and SQL injection vulnerabilities, and provides remediation recommendations.
This article outlines how to design and implement a comprehensive mobile data collection and analysis system using the open‑source Countly platform, covering background requirements, solution selection, architecture, customizations for client, server and dashboard, SDK integration for Android and H5, and practical data mining insights.
This article explores the core principles of frontend testing, comparing Test-Driven Development and Behavior-Driven Development methodologies while providing a step-by-step tutorial on configuring the Jest framework and utilizing its essential matchers to write robust, maintainable unit tests for modern web applications.
This article presents ZTFace, an end‑to‑end face recognition solution that integrates face detection, alignment, feature embedding, verification, anti‑spoofing and attribute recognition using deep learning, details its backbone networks, loss functions, training datasets, experimental results on WIDER FACE and LFW, and demonstrates acceleration with TensorRT.
This article reviews the evolution of voice assistants, compares commercial and open‑source solutions, explains why Rasa was chosen for a city‑governance AI assistant, and details its architecture, data processing, NLU/Core workflow, code implementation, and practical demonstration.
This article describes a technical solution that combines a custom Android handwritten signature component with blockchain storage to ensure electronic document authenticity, prevent tampering, support multi‑level approval, and enable seamless signing across mobile and web platforms.
This article outlines the challenges of scaling parking services to cloud SaaS—including network latency, real‑time processing, and data integrity—and presents a comprehensive stability strategy using MQTT, dual‑network backup, Go‑based process supervision, and edge‑cloud collaboration to achieve high‑availability unattended parking operations.
