Coder Trainee

Feb 5, 2026 · Backend Development

How to Retrieve the access_token for a WeChat Mini Program

This article explains why a WeChat Mini Program needs an access_token, describes the token's 7200‑second validity, and provides a step‑by‑step Java implementation that builds the request URL, sends an HTTPS GET, parses the JSON response, and outlines a simple caching strategy.